hashcash and bitcoin

"'Bitcoin is Hashcash extended with inflation control.' ...[is] sort of like saying, 'a Tesla is just a battery on wheels.'" -- Blockstream's Adam Back #R3KT by Princeton researchers in new Bitcoin book

submitted by crackthecore to btc [link] [comments]

02-21 16:33 - 'Valuation Of HCX Is Heading For An Upswing As HashCash Consultants Takes Up New Projects' (cryptoninjas.net) by /u/Hashcashconsultants removed from /r/Bitcoin within 123-133min

Valuation Of HCX Is Heading For An Upswing As HashCash Consultants Takes Up New Projects
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Author: Hashcashconsultants
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"'Bitcoin is Hashcash extended with inflation control.' ...[is] sort of like saying, 'a Tesla is just a battery on wheels.'" -- Blockstream's Adam Back #R3KT by Princeton researchers in new Bitcoin book

submitted by BitcoinAllBot to BitcoinAll [link] [comments]

RESEARCH REPORT ABOUT ARYACOIN

RESEARCH REPORT ABOUT ARYACOIN
Author: Gamals Ahmed, CoinEx Business Ambassador

https://preview.redd.it/a7jv4azk86u51.jpg?width=1600&format=pjpg&auto=webp&s=e4a4dbb5afacd5747076beaa59e6343b805c3392

ABSTRACT

Aryacoin is a new cryptocurrency, which allows for decentralized, peer to peer transactions of electronic cash. It is like Bitcoin and Litecoin, but the trading of the coin occurs on sales platforms that have no restriction to use. Further, it was created with the goal of addressing the double spend issues of Bitcoin and does so using a timestamp server to verify transactions. It works by taking the hash of a block of items to be timestamped and widely publishing the hash. The timestamp proves that the data must have existed at the time in order to get the hash. Each timestamp then includes the previous timestamp in its hash, forming a chain.
The Aryacoin team is continuously developing new use cases for the coin, including exchanges where users can exchange the coins without any fees or restrictions, and offline options where the coins can be bought and sold for cash. The coins can also be used on the company’s other platform, mrdigicoin.io. Along with the coin, there is a digital wallet that can be created and controlled by the user entirely, with no control being retained by the Aryacoin team.

1.INTRODUCTION

The concept of Blockchain first came to fame in October 2008, as part of a proposal for Bitcoin, with the aim to create P2P money without banks. Bitcoin introduced a novel solution to the age-old human problem of trust. The underlying blockchain technology allows us to trust the outputs of the system without trusting any actor within it. People and institutions who do not know or trust each other, reside in different countries, are subject to different jurisdictions, and who have no legally binding agreements with each other, can now interact over the Internet without the need for trusted third parties like banks, Internet platforms, or other types of clearing institutions.
When bitcoin was launched it was revolutionary allowing people to transfer money to anytime and anywhere with very low transaction fees . It was decentralized and their is no third party involved in the transaction , only the sender and receiver were involved.
This paper provide a solution to the double-spending problem using a peer-to-peer distributed timestamp server to generate computational proof of the chronological order of transactions.The system is secure as long as honest nodes collectively control more CPU power than any cooperating group of attacker nodes. Bitcoin was made so that it would not be controlled or regulated but now exchanges and governments are regulating bitcoin and other cryptocurrencies at every step. Aryacoin was developed to overcome these restrictions on a free currency.
Aryacoin is a new age cryptocurrency, which withholds the original principle on which the concept of cryptocurrency was established. Combining the best in blockchain technology since the time of its creation, Aryacoin strives to deliver the highest trading and mining standards for its community.

1.1 OVERVIEW ABOUT ARYACOIN

Aryacoin is a new age cryptocurrency, which withholds the original principle on which the concept of cryptocurrency was established. Combining the best in blockchain technology since the time of its creation, Aryacoin strives to deliver the highest trading and mining standards for its community.
Aryacoin is a blockchain based project that allows users to access their wallet on the web and mobile browsers, using their login details.
Aryacoin can be mined; it also can be exchanged by other digital currencies in several world-famous exchanges such as Hitbtc, CoinEx, P2pb2b, WhiteBit, Changelly and is also listed in reputable wallets such as Coinomi and Guarda.
Aryacoin is a coin, which can be used by anyone looking to use cryptocurrency which allows them to keep their privacy even when buying/selling the coin along with while using the coin during transactions. Proof of work and cryptographic hashes allows transactions to verified.
Stable Fee Per AYA is a unique feature of Aryacoin, so by increasing the amount or volume of the transaction, there is no change in the fee within the network, which means that the fee for sending an amount less than 1 AYA is equal to several hundred million AYA. Another unique feature of Aryacoin is the undetectability of transactions in Explorer, such as the DASH and Monero, of course, this operation is unique to Aryacoin.
Using Aryacoin digital currency, like other currencies, international transactions can be done very quickly and there are no limitations in this area as the creators claim.
Aryacoin aims to allow users to access the Aryacoin wallet via the web and mobile browsers using their login details.
Aryacoin is a peer-to-peer electronic cash system that enables users to send and receive payments directly from one party to another, and allow them to transfer funds across borders with no restriction or third party involvement. The blockchain-based system embraces the digital signature, which prevents double spending and low transfer fees, which enables users to transfer huge amounts with very low fees. The proof-of-work consensus mechanism allows each transaction to be verified and confirmed, while anonymity enables users to use the coin anywhere at any time.
According to the website of the operation, each wallet is divided into 2 or more AYA wallet addresses for each transaction, and depending on the volume of the transaction block, the origin, and destination of transactions in the network can not be traced and displayed to the public.
In fact, each wallet in Aryacoin consists of a total of several wallets. The number of these wallets increases per transaction to increase both security and privacy. Aryacoin also uses the dPoW protocol. In the dPoW protocol, a second layer is added to the network to verify transactions, which makes “51% attack” impossible even with more than half of the network hash, and blocks whose Blockchain uses this second layer of security never run the risk of 51% attacks.
AYA has been listed on a number of crypto exchanges, unlike other main cryptocurrencies, it cannot be directly purchased with fiats money. However, You can still easily buy this coin by
first buying Bitcoin from any large exchanges and then transfer to the exchange that offers to trade this coin.

1.1.1 ARYACOIN HISTORY

Aryacoin (AYA) is a new cryptocurrency, which has been created by a group of Iranian developers, is an altcoin which allows for decentralised, peer to peer transactions of electronic cash without any fees whatsoever. Along with the coin, there is a digital wallet that can be created and managed by the user entirely, with no control being retained by the Aryacoin team.
Aryacoin’s founder, Kiumars Parsa, has been a fan of alternative currencies and particularly Bitcoin.
We see people from all around the world using Blockchain technology and the great benefits that came with it and it then that I decided to solve this puzzle for find a way of bringing the last missing piece to the jigsaw. The idea for Aryacoin was born.” Parsa said.
Parsa and his team of Iranian ex-pats not only persevered but expedited the project and just a year later, in the summer of 2019, the first version of Aryacoin was released. In 2020, Aryacoin is the first and only Iranian coin listed on CMC.
Parsa goes on to state that it is now the strength of the community that has invested in the coin that will ultimately drive its success, alongside its robust technology and appealing 0% network fees.
We have thousands of voices behind Aryacoin. People for the people make this coin. It is a massive shout out for democracy. This had made us base the whole team strategy on the benefits for both our users and our traders.
One key example is that the network fee on AYA Blockchain is 0%. Yes, absolutely nothing, which which differentiates us from other networks. What also differentiates us from other coins is that we have AYAPAY which is the first cryptocurrency Gateway in the world which does not save funds on third party storage with all funds being forwarded directly to any wallet address that the Gateway owner requests”.
So for the first time ever, and unlike other gateways, incoming funds will be saved on the users account with submitted withdrawal requests then made on the Gateway host website. In AYAPAY which has also been developed by the Aryacoin team, all funds without extra fees or extra costs will directly forwarded to users wallets. We have named this technology as CloudWithdrawal.
We are continuously challenging ourselves as it is a crowded marketplace. We are striving to have a safer Blockchain against 51% attacks, faster confirmations speeds of transactions, cheaper network fee, growing the market by cooperation with Top tier Exchangers.

1.1.2 ARYACOIN’S MAIN GOAL

Aryacoin’s main goal is to educate people and give them the freedom to use cryptocurrency in any way they want. Aryacoin empowers the users to transfer, pay, trade cryptocurrency from any country around the globe.
Platforms that have been created by Aryacoin Team, as well as those that will go live in future, operate on the same principle and exclude absolutely no one.

1.1.3 PROBLEM ARYACOIN SEEKS TO SOLVE

Aryacoin aims to provide a long-term solution to the problem of double spending, which is still common in the crypto market. The developers of the system have created a peer-to-peer distributed timestamp server that generates computational proof of the transactions as they occur.
Besides, the system remains secure provided honest nodes control more CPU power than any cooperating group of attacker nodes. While Bitcoin was designed not to be regulated or controlled, many exchanges and governments have put regulatory measures on the pioneer cryptocurrency at every step. Aryacoin aims to overcome these restrictions as a free digital currency.

1.1.4 BENEFITS OF USING ARYACOIN

Aryacoin solution offers the following benefits:
  • Real-time update: whether you’re going on a holiday or a business trip, no problem. You can access your coins all over the world.
  • Instant operations: Aryacoin makes it quite easy for you to use your digital wallet and perform various operations with it.
  • Safe and secure: all your data is stored encrypted and can only be decrypted with your private key, seed, or password.
  • Strong security: The system has no control over your wallet. You are 100% in charge of your wallet and funds.

1.1.5 ARYACOIN FEATURES

1. Anonymity
The coin provides decent level of anonymity for all its users. The users can send their transactions to any of the public nodes to be broadcasted , the transaction sent to the nodes should be signed by the private key of the sender address . This allows the users to use the coin anywhere any time , sending transactions directly to the node allows users from any place and country .
2. Real Life Usage
aryacoin’s team is continuously developing new and innovative ways to use the coins , they are currently developing exchanges where the users can exchange the coins without any fees and any restrictions . They also are currently developing other innovative technologies, which would allow users to spend our coins everywhere and anywhere.
3. Offline Exchanges
They are also working with different offline vendors which would enable them to buy and sell the coins directly to our users on a fixed/variable price this would allow easy buy/sell directly using cash . This would allow the coins to be accessible to users without any restrictions which most of the online exchanges have, also increase the value and number of users along with new ways to spend the coin. This would increase anonymity level of the
coin. In addition, introduce new users into the cryptomarket and technology. Creating a revolution, which educates people about crypto and introduce them to the crypto world, which introduces a completely new group of people into crypto and a move towards a Decentralized future!
4. Transactions
When it comes to transactions, Aryacoin embraces a chain of digital signatures, where each owner simply transfers the coin to the next person by digitally signing a hash of the previous transaction and the public key of the next owner. The recipient can then verify the signatures to confirm the chain of ownership. Importantly, Aryacoin comes with a trusted central authority that checks every transaction for double spending.
5. Business Partner with Simplex
Aryacoin is the first and only Iranian digital currency that managed to obtain a trading license in other countries.
In collaboration with the foundation and financial giant Simplex, a major cryptocurrency company that has large companies such as Binance, P2P, Changelly, etc. Aryacoin has been licensed to enter the world’s major exchanges, as well as the possibility of purchasing AYA through Credit Cards, which will begin in the second half of 2020.
Also, the possibility of purchasing Aryacoin through Visa and MasterCard credit cards will be activated simultaneously inside the Aryacoin site. plus, in less than a year, AYA will be placed next to big names such as CoinCapMarket, Coinomi, P2P, Coinpayments and many other world-class brands today.

1.1.6 WHY CHOOSE ARYACOIN?

If you want to use a cryptocurrency that allows you to keep your privacy online even when buying and selling the coins, the Aryacoin team claims that AYA is the way to go. Aryacoin is putting in the work: with more ways to buy and sell, and fixing the issues that were present in the original Bitcoin, plus pushing the boundaries with innovative solutions in cryptocurrencies. You can get started using Aryacoin (AYA) payments simply by having a CoinPayments account!

1.1.7 ARYANA CENTRALIZED EXCHANGE

Aryana, the first Iranian exchange is a unique platform with the following features:
  • The first real international Persian exchange that obtains international licenses and is listed in CoinMarketCap.
  • The first Iranian exchange that has been cooperating with a legal and European exchange for 3 years.
  • The possibility of trading in Tomans (available currency in Iran) at the user’s desired price and getting rid of the transaction prices imposed by domestic sites inside Iran.
  • There is an internal fee payment plan by Iranian domestic banks for depositing and withdrawing Tomans for Aryacoin holders in Aryana Exchange.
  • The number that you see on the monitor and in your account will be equal to the number that is transferred to your bank account without a difference of one Rial.
  • The last but not least, noting the fact that there is a trading in Tomans possibility in Aryana exchange.
Aryana Exchange is using the most powerful, fastest, and most expensive server in the world, Google Cloud Platform (GCP), which is currently the highest quality server for an Iranian site, so that professional traders do not lag behind the market even for a second.
The feature of Smart Trading Robots is one of the most powerful features for digital currency traders. Digital cryptocurrency traders are well aware of how much they will benefit from smart trading robots. In the Aryana exchange, it is possible to connect exchange user accounts to intelligent trading bots and trade even when they are offline.
The injection of $ 1 million a day in liquidity by the WhiteBite exchange to maintain and support the price of Tether and eliminate the Tether fluctuations with Bitcoin instabilities used by profiteers to become a matter of course.

1.1.8 HOW DOES ARYACOIN WORK?

Aryacoin (AYA) tries to ensure a high level of security and privacy. The team has made sure to eliminate any trading restrictions for the network users: no verification is required to carry out transactions on AYA, making the project truly anonymous, decentralized, and giving it a real use in day-to-day life. The Delayed-Proof-of-Work (dPoW) algorithm makes the Aryacoin blockchain immune to any attempts of a 51% attack. AYA defines a coin as a chain of digital signatures — each owner transfers the coin to the next owner by digitally signing the hash of the previous transaction and the public key of the next owner, and the receiver verifies the signatures and the chain of ownership.

2. ARYACOIN TECHNOLOGY

2.1 PROOF-OF-WORK

They use a proof-of-work system similar to Adam Back’s Hashcash to implement a distributed timestamp server on a peer-to-peer basis, rather than newspaper or Usenet publications. The proof-of-work involves scanning for a value that when hashed, such as with SHA-256, the hash begins with a number of zero bits. The average work required is exponential in the number of zero bits required and can be verified by executing a single hash.
For their timestamp network, they implement the proof-of-work by incrementing a nonce in the block until a value is found that gives the block’s hash the required zero bits. Once the CPU effort has been expended to make it satisfy the proof-of-work, the block cannot be changed without redoing the work. As later blocks are chained after it, the work to change the block would include redoing all the blocks after it.
The proof-of-work also solves the problem of determining representation in majority decision making. If the majority were based on one-IP-address-one-vote, it could be subverted by anyone able to allocate many IPs. Proof-of-work is essentially one-CPU-one-vote. The majority decision is represented by the longest chain, which has the greatest proof-of-work effort invested in it. If honest nodes control a majority of CPU power, the honest chain will grow the fastest and outpace any competing chains. To modify a past
block, an attacker would have to redo the proof-of-work of the block and all blocks after it, then catch up with, and surpass the work of the honest nodes.

2.2 NETWORK

The steps to run the network are as follows:
  • New transactions are broadcast to all nodes.
  • Each node collects new transactions into a block.
  • Each node works on finding a difficult proof-of-work for its block.
  • When a node finds a proof-of-work, it broadcasts the block to all nodes.
  • Nodes accept the block only if all transactions in it are valid and not already spent.
This is a very simple system that makes the network fast and scalable, while also providing a decent level of anonymity for all users. Users can send their transactions to any of the public nodes to be broadcast, and the private key of the sender’s address should sign any transaction sent to the nodes. This way, all transaction info remains strictly confidential. It also allows users to send transactions directly to the node from any place at any time and allows the transferring of huge amounts with very low fees.

2.3 AYAPAY PAYMENT SERVICES GATEWAY:

According to creators Aryacoin, the development team has succeeded in inventing a new blockchain technology for the first time in the world, which is undoubtedly a big step and great news for all digital currency enthusiasts around the world.
This new technology has been implemented on the Aryacoin AYAPAY platform and was unveiled on October 2. AYAPAY payment platform is the only payment gateway in the world that does not save money in users’ accounts and transfers incoming coins directly to any wallet address requested by the gateway owner without any additional transaction or fee.
In other similar systems or even systems such as PayPal, money is stored in the user account.

2.4 CONSENSUS ALGORITHM IN ARYACOIN

The devs introduced the Delayed-Proof-of-Work (dPoW) algorithm, which represents a hybrid consensus method that allows one blockchain to take advantage of the security provided by the hashing power of another blockchain. The AYA blockchain works on dPoW and can use such consensus methods as Proof-of-Work (PoW) or Proof-of-Stake (PoS) and join to any desired PoW blockchain. The main purpose of this is to allow the blockchain to continue operating without notary nodes on the basis of its original consensus method. In this situation, additional security will no longer be provided through the attached blockchain, but this is not a particularly significant problem. dPoW can improve the security level and reduce energy consumption for any blockchain.

2.5 DOUBLE-SPEND PROBLEM AND SOLUTION

One of the main problems in the blockchain world is that a receiver is unable to verify whether or not one of the senders did not double-spend. Aryacoin provides the solution, and has established a trusted central authority, or mint, that checks every transaction for double-spending. Only the mint can issue a new coin and all the coins issued directly from the mint are trusted and cannot be double-spent. However, such a system cannot therefore
be fully decentralized because it depends on the company running the mint, similar to a bank. Aryacoin implements a scheme where the receiver knows that the previous owners did not sign any earlier transactions. The mint is aware of all transactions including which of them arrived first. The developers used an interesting solution called the Timestamp Server, which works by taking a hash of a block of items to be ‘timestamped’ and publishing the hash. Each timestamp includes the previous timestamp in its hash, forming a chain. To modify a block, an attacker would have to redo the proof-of-work of all previous blocks, then catch up with, and surpass the work of the honest nodes. This is almost impossible, and makes the network processes more secure. The proof-of-work difficulty varies according to circumstances. Such an approach ensures reliability and high throughput.

3. ARYACOIN ROADMAP

April 2019: The launch of Aryacoin; AYA ICO, resulting in over 30BTC collected
December 2019: The launch of AYA Pay
April 2020: The successful Hamedan Hardfork, supported by all AYA exchanges, aimed at integrating the dPoW algorithm, improving the security of the AYA blockchain.
June 2020: Aryana Exchange goes live, opening more trading opportunities globally
July 2020: The enabling of our Coin Exchanger
November 2020: The implementation of Smart Contracts into the Aryacoin Ecosystem
Q1 2021: Alef B goes live (more details coming soon)

4. THE NUCYBER NETWORK COMMUNITY & SOCIAL

Website: https://aryacoin.io/
Explorer: https://explorer.aryacoin.io/
Github: https://github.com/Aryacoin/Aryacoin
Twitter: 1.1k followers https://twitter.com/AryacoinAYA
Reddit: 442 members https://github.com/nucypher
Instagram: 3.8k followers https://www.instagram.com/mrdigicoin/ Telegram: 5.9k subscribers https://t.me/AYA_Global

5. SUMMARY

Aryacoin (AYA) is a new age cryptocurrency that combines the best of the blockchain technology and strives to deliver high trading and mining standards, enabling users to make peer-to-peer decentralized transactions of electronic cash. Aryacoin is part of an ecosystem that includes payment gateway Ayapay and the Ayabank. AYA has a partnership with the Microsoft Azure cloud platform, which provides the ability to develop applications and store data on servers located in distributed data centers. The network fee for the AYA Blockchain is 0%. In Ayapay service, which has been developed by the Aryacoin team, all funds without extra fees or costs are directly forwarded to users’ wallets with technology called CloudWithdrawal. The devs team is introducing new use cases including exchanges where users will exchange AYA without any restrictions. You can buy AYA on an exchange of your choice, create an Aryacoin wallet, and store it in Guarda.

6. REFERENCES

1) https://coincodex.com/crypto/aryacoin/
2) https://www.icosandstos.com/coin/Aryacoin%20AYA/YuXO60UPF3
3) https://www.publish0x.com/iran-and-cryptocurrency/a-brief-introduction-of-aryacoin-first-ever-iranian-cryptocu-xoldlom
4) https://techround.co.uk/cryptocurrency/aryacoin-the-digital-currency-created-by-iranians/
5) https://bitcoinexchangeguide.com/aryacoin/
6) https://blog.coinpayments.net/coin-spotlight/aryacoin
7) https://guarda.com/aryacoin-wallet
submitted by CoinEx_Institution to Coinex [link] [comments]

I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. Help greatly appreciated!

I posted this on /cryptotechnology . It attracted quite a bit of upvotes but not many potential contributors. Someone mentioned I should try this sub. I read the rules and it seems to fit within them. Hope this kind of post is alright here...
EDIT: My mother language is french (I'm from Montreal/Canada). Please excuse any blatant grammatical errors.
TLDR: I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. If you're interested, send me an email to discuss: [email protected] . Thanks in advance!
Hi guys,
For the last few years, I've been working on a decentralized legal-binding contract system. Basically, I created a PoW blockchain software that can receive a hash as an address, and another hash as a bucket, in each transaction.
The address hash is used to tell a specific entity (application/contract/company/person, etc) that uses the blockchain that this transaction might be addressed to them. The bucket hash simply tells the nodes which hashtree of files they need to download in order to execute that contract.
The buckets are shared within the network of nodes. Someone could, for example, write a contract with a series of nodes in order to host their data for them. Buckets can hold any kind of data, and can be of any size... including encrypted data.
The blockchain's blocks are chained together using a mining system similar to bitcoin (hashcash algorithm). Each block contains transactions. The requested difficulty increases when the amount of transactions in a block increases, linearly. Then, when a block is mined properly, another smaller mining effort is requested to link the block to the network's head block.
To replace a block, you need to create another block with more transactions than the amount that were transacted in and after the mined block.
I expect current payment processors to begin accepting transactions and mine them for their customers and make money with fees, in parallel. Using such a mechanism, miners will need to have a lot of bandwidth available in order to keep downloading the blocks of other miners, just like the current payment processors.
The contracts is code written in our custom programming language. Their code is pushed using a transaction, and hosted in buckets. Like you can see, the contract's data are off-chain, only its bucket hash is on-chain. The contract can be used to listen to events that occurs on the blockchain, in any buckets hosted by nodes or on any website that can be crawled and parsed in the contract.
There is also an identity system and a vouching system...which enable the creation of soft-money (promise of future payment in hard money (our cryptocurrency) if a series of events arrive).
The contracts can also be compiled to a legal-binding framework and be potentially be used in court. The contracts currently compile to english and french only.
I also built a browser that contains a 3D viewport, using OpenGL. The browser contains a domain name system (DNS) in form of contracts. Anyone can buy a new domain by creating a transaction with a bucket that contains code to reserve a specific name. When a user request a domain name, it discovers the bucket that is attached to the domain, download that bucket and executes its scripts... which renders in the 3D viewport.
When people interact with an application, the application can create contracts on behalf of the user and send them to the blockchain via a transaction. This enables normal users (non-developers) to interact with others using legal contracts, by using a GUI software.
The hard money (cryptocurrency) is all pre-mined and will be sold to entities (people/company) that want to use the network. The hard money can be re-sold using the contract proposition system, for payment in cash or a bank transfer. The fiat funds will go to my company in order to create services that use this specific network of contracts. The goal is to use the funds to make the network grow and increase its demand in hard money. For now, we plan to create:
A logistic and transportation company
A delivery company
A company that buy and sell real estate options
A company that manage real estate
A software development company
A world-wide fiat money transfer company
A payment processor company
We chose these niche because our team has a lot of experience in these areas: we currently run companies in these fields. These niche also generate a lot of revenue and expenses, making the value of exchanges high. We expect this to drive volume in contracts, soft-money and hard-money exchanges.
We also plan to use the funds to create a venture capital fund that invests in startups that wants to create contracts on our network to execute a specific service in a specific niche.
I'm about to release the software open source very soon and begin executing our commercial activities on the network. Before launching, I'd like to open a discussion with the community regarding the details of how this software works and how it is explained in the whitepaper.
If you'd like to read the whitepaper and open a discussion with me regarding how things work, please send me an email at [email protected] .
If you have any comment, please comment below and Ill try to answer every question. Please note that before peer-reviewing the software and the whitepaper, I'd like to keep the specific details of the software private, but can discuss the general details. A release date will be given once my work has been peer reviewed.
Thanks all in advance!
P.S: This project is not a competition to bitcoin. My goal with this project is to enable companies to write contracts together, easily follow events that are executed in their contracts, understand what to expect from their partnership and what they need to give in order to receive their share of deals... and sell their contracts that they no longer need to other community members.
Bitcoin already has a network of people that uses it. It has its own value. In fact, I plan to create contracts on our network to exchange value from our network for bitcoin and vice-versa. Same for any commodity and currency that currently exits in this world.
submitted by steve-rodrigue to compsci [link] [comments]

I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. Help greatly appreciated!

I originally posted this on /cryptocurrency. I just thought you guys might be able to help as well so I posted it as well. I didn't link to the original post because the bot here keeps deleting my post, even if I use the np link. Hope that's ok...
EDIT: My mother language is french (I'm from Montreal/Canada). Please excuse any blatant grammatical errors.
TLDR: I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. If you're interested, send me an email to discuss: [[email protected]](mailto:[email protected]) . Thanks in advance!
Hi guys,
For the last few years, I've been working on a decentralized legal-binding contract system. Basically, I created a PoW blockchain software that can receive a hash as an address, and another hash as a bucket, in each transaction.
The address hash is used to tell a specific entity (application/contract/company/person, etc) that uses the blockchain that this transaction might be addressed to them. The bucket hash simply tells the nodes which hashtree of files they need to download in order to execute that contract.
The buckets are shared within the network of nodes. Someone could, for example, write a contract with a series of nodes in order to host their data for them. Buckets can hold any kind of data, and can be of any size... including encrypted data.
The blockchain's blocks are chained together using a mining system similar to bitcoin (hashcash algorithm). Each block contains transactions. The requested difficulty increases when the amount of transactions in a block increases, linearly. Then, when a block is mined properly, another smaller mining effort is requested to link the block to the network's head block.
To replace a block, you need to create another block with more transactions than the amount that were transacted in and after the mined block.
I expect current payment processors to begin accepting transactions and mine them for their customers and make money with fees, in parallel. Using such a mechanism, miners will need to have a lot of bandwidth available in order to keep downloading the blocks of other miners, just like the current payment processors.
The contracts is code written in our custom programming language. Their code is pushed using a transaction, and hosted in buckets. Like you can see, the contract's data are off-chain, only its bucket hash is on-chain. The contract can be used to listen to events that occurs on the blockchain, in any buckets hosted by nodes or on any website that can be crawled and parsed in the contract.
There is also an identity system and a vouching system...which enable the creation of soft-money (promise of future payment in hard money (our cryptocurrency) if a series of events arrive).
The contracts can also be compiled to a legal-binding framework and be potentially be used in court. The contracts currently compile to english and french only.
I also built a browser that contains a 3D viewport, using OpenGL. The browser contains a domain name system (DNS) in form of contracts. Anyone can buy a new domain by creating a transaction with a bucket that contains code to reserve a specific name. When a user request a domain name, it discovers the bucket that is attached to the domain, download that bucket and executes its scripts... which renders in the 3D viewport.
When people interact with an application, the application can create contracts on behalf of the user and send them to the blockchain via a transaction. This enables normal users (non-developers) to interact with others using legal contracts, by using a GUI software.
The hard money (cryptocurrency) is all pre-mined and will be sold to entities (people/company) that want to use the network. The hard money can be re-sold using the contract proposition system, for payment in cash or a bank transfer. The fiat funds will go to my company in order to create services that use this specific network of contracts. The goal is to use the funds to make the network grow and increase its demand in hard money. For now, we plan to create:
  1. A logistic and transportation company
  2. A delivery company
  3. A company that buy and sell real estate options
  4. A company that manage real estate
  5. A software development company
  6. A world-wide fiat money transfer company
  7. A payment processor company
We chose these niche because our team has a lot of experience in these areas: we currently run companies in these fields. These niche also generate a lot of revenue and expenses, making the value of exchanges high. We expect this to drive volume in contracts, soft-money and hard-money.
We also plan to use the funds to create a venture capital fund that invests in startups that wants to create contracts on our network to execute a specific service in a specific niche.
I'm about to release the software open source very soon and begin executing our commercial activities on the network. Before launching, I'd like to open a discussion with the community regarding the details of how this software works and how it is explained in the whitepaper.
If you'd like to read the whitepaper and open a discussion with me regarding how things work, please send me an email at [[email protected]](mailto:[email protected]) .
If you have any comment, please comment below and Ill try to answer every question. Please note that before peer-reviewing the software and the whitepaper, I'd like to keep the specific details of the software private, but can discuss the general details. A release date will be given once my work has been peer reviewed.
Thanks all in advance!
P.S: This project is not a competition to bitcoin. My goal with this project is to enable companies to write contracts together, easily follow events that are executed in their contracts, understand what to expect from their partnership and what they need to give in order to receive their share of deals... and sell their contracts that they no longer need to other community members.
Bitcoin already has a network of people that uses it. It has its own value. In fact, I plan to create contracts on our network to exchange value from our network for bitcoin and vice-versa. Same for any commodity and currency that currently exits in this world.
submitted by steve-rodrigue to CryptoTechnology [link] [comments]

The history of cryptocurrency

The history of cryptocurrency
The history of cryptocurrency is interesting and exciting. Its creation, inception and development, has in fact lasted for several decades, and not from 2009 as many believe.
📷 In general, the history of cryptocurrency should be clear to any novice miner, trader or investor — thus, anyone who works or plans to work with cryptocurrencies can say: «I understand its history»
Thus 1️⃣. The first who proposed the use of electronic money and even described their concept were Stefan brands and David Chaum. This happened in 1983. This Information at that time was revolutionary.
2️⃣. The next significant contribution to the formation of the concept of digital currencies was made by Adam Bakov in 1997. He suggested the using of the HashCash system, which was meant to cope with DoS attacks and counteract the sending of spam. What does this have to do with cryptocurrencies? This system became the basis for creating blocks in the blockchain, which means that it enabled the first cryptocurrency in the world to work.
3️⃣. Another brilliant idea proposed by Nick Szabo (and Wei Dai in parallel) was successfully implemented in the cryptocurrency network in 1998. Wei Dai, a graduate of the University of Washington, developed the concept of electronic money B-money. In his opinion, such a financial system could free people from taxes and remove the influence of the state. But the project never got out of the state of conception, and the baton was taken by programmer Nick Szabo, who was working on the idea of «Bit-gold» at the time. He sought to create a virtual currency that required some work to be done to get it.
4️⃣. An additional prerequisite for creating a cryptocurrency was attained by Hal Finney. He created hash block chains for Hashcash. By the way, an interesting fact is that Finney was the second to enter the bitcoin network.
5️⃣. DigiCash system must also be mentioned. In 1990, it started working with cryptography in order to ensure the maximum possible confidentiality of payments. This system differed from most modern cryptocurrencies in its centralization. The company went bankrupt in 1998.
6️⃣. In 2008, the mysterious Satoshi Nakamoto introduced the technology of decentralized networks (blockchain) to the world, and then a visual project of a virtual currency that could perfectly exist on the basis of this technology. This innovation was the last frontier in the development of cryptographic payment system concepts and the beginning of a new era of financial security and payment independence.
📷We will continue our crypto story in the following posts :)

https://preview.redd.it/rdsh2va44kd51.jpg?width=1200&format=pjpg&auto=webp&s=e17e324fadd296731380ba32e66b56a19e74bab2
#cryptocurrency #CryptoNeuroNews #bitcoin #crypto #NeuronChain #blockchain #Finance #NeuronInteresting
submitted by neuronchain to NeuronChain [link] [comments]

I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. Help greatly appreciated!

EDIT: My mother language is french (I'm from Montreal/Canada). Please excuse any blatant grammatical errors.
TLDR: I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. If you're interested, send me an email to discuss: [[email protected]](mailto:[email protected]) . Thanks in advance!
Hi guys,
For the last few years, I've been working on a decentralized legal-binding contract system. Basically, I created a PoW blockchain software that can receive a hash as an address, and another hash as a bucket, in each transaction.
The address hash is used to tell a specific entity (application/contract/company/person, etc) that uses the blockchain that this transaction might be addressed to them. The bucket hash simply tells the nodes which hashtree of files they need to download in order to execute that contract.
The buckets are shared within the network of nodes. Someone could, for example, write a contract with a series of nodes in order to host their data for them. Buckets can hold any kind of data, and can be of any size... including encrypted data.
The blockchain's blocks are chained together using a mining system similar to bitcoin (hashcash algorithm). Each block contains transactions. The requested difficulty increases when the amount of transactions in a block increases, linearly. Then, when a block is mined properly, another smaller mining effort is requested to link the block to the network's head block.
To replace a block, you need to create another block with more transactions than the amount that were transacted in and after the mined block.
I expect current payment processors to begin accepting transactions and mine them for their customers and make money with fees, in parallel. Using such a mechanism, miners will need to have a lot of bandwidth available in order to keep downloading the blocks of other miners, just like the current payment processors.
The contracts is code written in our custom programming language. Their code is pushed using a transaction, and hosted in buckets. Like you can see, the contract's data are off-chain, only its bucket hash is on-chain. The contract can be used to listen to events that occurs on the blockchain, in any buckets hosted by nodes or on any website that can be crawled and parsed in the contract.
There is also an identity system and a vouching system...which enable the creation of soft-money (promise of future payment in hard money (our cryptocurrency) if a series of events arrive).
The contracts can also be compiled to a legal-binding framework and be potentially be used in court. The contracts currently compile to english and french only.
I also built a browser that contains a 3D viewport, using OpenGL. The browser contains a domain name system (DNS) in form of contracts. Anyone can buy a new domain by creating a transaction with a bucket that contains code to reserve a specific name. When a user request a domain name, it discovers the bucket that is attached to the domain, download that bucket and executes its scripts... which renders in the 3D viewport.
When people interact with an application, the application can create contracts on behalf of the user and send them to the blockchain via a transaction. This enables normal users (non-developers) to interact with others using legal contracts, by using a GUI software.
The hard money (cryptocurrency) is all pre-mined and will be sold to entities (people/company) that want to use the network. The hard money can be re-sold using the contract proposition system, for payment in cash or a bank transfer. The fiat funds will go to my company in order to create services that use this specific network of contracts. The goal is to use the funds to make the network grow and increase its demand in hard money. For now, we plan to create:
  1. A logistic and transportation company
  2. A delivery company
  3. A company that buy and sell real estate options
  4. A company that manage real estate
  5. A software development company
  6. A world-wide fiat money transfer company
  7. A payment processor company
We chose these niche because our team has a lot of experience in these areas: we currently run companies in these fields. These niche also generate a lot of revenue and expenses, making the value of exchanges high. We expect this to drive volume in contracts, soft-money and hard-money.
We also plan to use the funds to create a venture capital fund that invests in startups that wants to create contracts on our network to execute a specific service in a specific niche.
I'm about to release the software open source very soon and begin executing our commercial activities on the network. Before launching, I'd like to open a discussion with the community regarding the details of how this software works and how it is explained in the whitepaper.
If you'd like to read the whitepaper and open a discussion with me regarding how things work, please send me an email at [[email protected]](mailto:[email protected]) .
If you have any comment, please comment below and Ill try to answer every question. Please note that before peer-reviewing the software and the whitepaper, I'd like to keep the specific details of the software private, but can discuss the general details. A release date will be given once my work has been peer reviewed.
Thanks all in advance!
P.S: This project is not a competition to bitcoin. My goal with this project is to enable companies to write contracts together, easily follow events that are executed in their contracts, understand what to expect from their partnership and what they need to give in order to receive their share of deals... and sell their contracts that they no longer need to other community members.
Bitcoin already has a network of people that uses it. It has its own value. In fact, I plan to create contracts on our network to exchange value from our network for bitcoin and vice-versa. Same for any commodity and currency that currently exits in this world.
submitted by steve-rodrigue to CryptoCurrency [link] [comments]

I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. Help greatly appreciated!

I originally posted this on cryptocurrency. I just thought you guys might be able to help as well so I posted it as well. I didn't link to the original post because the bot here keeps deleting my post, even if I use the np link. Hope that's ok...
EDIT: My mother language is french (I'm from Montreal/Canada). Please excuse any blatant grammatical errors.
TLDR: I built a decentralized legal-binding smart contract system. I need peer reviewers and whitepaper proof readers. If you're interested, send me an email to discuss: [[email protected]](mailto:[email protected]) . Thanks in advance!
Hi guys,
For the last few years, I've been working on a decentralized legal-binding contract system. Basically, I created a PoW blockchain software that can receive a hash as an address, and another hash as a bucket, in each transaction.
The address hash is used to tell a specific entity (application/contract/company/person, etc) that uses the blockchain that this transaction might be addressed to them. The bucket hash simply tells the nodes which hashtree of files they need to download in order to execute that contract.
The buckets are shared within the network of nodes. Someone could, for example, write a contract with a series of nodes in order to host their data for them. Buckets can hold any kind of data, and can be of any size... including encrypted data.
The blockchain's blocks are chained together using a mining system similar to bitcoin (hashcash algorithm). Each block contains transactions. The requested difficulty increases when the amount of transactions in a block increases, linearly. Then, when a block is mined properly, another smaller mining effort is requested to link the block to the network's head block.
To replace a block, you need to create another block with more transactions than the amount that were transacted in and after the mined block.
I expect current payment processors to begin accepting transactions and mine them for their customers and make money with fees, in parallel. Using such a mechanism, miners will need to have a lot of bandwidth available in order to keep downloading the blocks of other miners, just like the current payment processors.
The contracts is code written in our custom programming language. Their code is pushed using a transaction, and hosted in buckets. Like you can see, the contract's data are off-chain, only its bucket hash is on-chain. The contract can be used to listen to events that occurs on the blockchain, in any buckets hosted by nodes or on any website that can be crawled and parsed in the contract.
There is also an identity system and a vouching system...which enable the creation of soft-money (promise of future payment in hard money (our cryptocurrency) if a series of events arrive).
The contracts can also be compiled to a legal-binding framework and be potentially be used in court. The contracts currently compile to english and french only.
I also built a browser that contains a 3D viewport, using OpenGL. The browser contains a domain name system (DNS) in form of contracts. Anyone can buy a new domain by creating a transaction with a bucket that contains code to reserve a specific name. When a user request a domain name, it discovers the bucket that is attached to the domain, download that bucket and executes its scripts... which renders in the 3D viewport.
When people interact with an application, the application can create contracts on behalf of the user and send them to the blockchain via a transaction. This enables normal users (non-developers) to interact with others using legal contracts, by using a GUI software.
The hard money (cryptocurrency) is all pre-mined and will be sold to entities (people/company) that want to use the network. The hard money can be re-sold using the contract proposition system, for payment in cash or a bank transfer. The fiat funds will go to my company in order to create services that use this specific network of contracts. The goal is to use the funds to make the network grow and increase its demand in hard money. For now, we plan to create:
  1. A logistic and transportation company
  2. A delivery company
  3. A company that buy and sell real estate options
  4. A company that manage real estate
  5. A software development company
  6. A world-wide fiat money transfer company
  7. A payment processor company
We chose these niche because our team has a lot of experience in these areas: we currently run companies in these fields. These niche also generate a lot of revenue and expenses, making the value of exchanges high. We expect this to drive volume in contracts, soft-money and hard-money.
We also plan to use the funds to create a venture capital fund that invests in startups that wants to create contracts on our network to execute a specific service in a specific niche.
I'm about to release the software open source very soon and begin executing our commercial activities on the network. Before launching, I'd like to open a discussion with the community regarding the details of how this software works and how it is explained in the whitepaper.
If you'd like to read the whitepaper and open a discussion with me regarding how things work, please send me an email at [[email protected]](mailto:[email protected]) .
If you have any comment, please comment below and Ill try to answer every question. Please note that before peer-reviewing the software and the whitepaper, I'd like to keep the specific details of the software private, but can discuss the general details. A release date will be given once my work has been peer reviewed.
Thanks all in advance!
P.S: This project is not a competition to bitcoin. My goal with this project is to enable companies to write contracts together, easily follow events that are executed in their contracts, understand what to expect from their partnership and what they need to give in order to receive their share of deals... and sell their contracts that they no longer need to other community members.
Bitcoin already has a network of people that uses it. It has its own value. In fact, I plan to create contracts on our network to exchange value from our network for bitcoin and vice-versa. Same for any commodity and currency that currently exits in this world.
submitted by steve-rodrigue to cryptodevs [link] [comments]

Fifty Years of Cypherpunk: History, Personalities, And Spread of its ideas

In this review, we tell how the ideas of cypherpunk were born, how they influenced cryptocurrencies, and modern technologies, who formed the basis and why its popularity these days has grown again.

From the early days to today: the chronology of key events of the cypherpunk

In the early 1970s, James Ellis of the UK Government Communications Center put forward the concept of public-key cryptography. In the early 1980s, small groups of hackers, mathematicians and cryptographers began working on the realization of this idea. One of them was an American cryptographer, Ph.D. David Chaum, who is sometimes called the godfather of cypherpunk. This new culture has proclaimed computer technology as a means of destroying state power and centralized management systems.Key figure among the cypherpunk of the 80s — Intel specialist Timothy C. May. His dream was to create a global system that allows anonymous exchange of information. He created the concept of the BlackNet system. In September 1988, May wrote The Crypto-Anarchist Manifesto: people themselves, without politicians, manage their lives, use cryptography, use digital currencies, and other decentralized tools.In 1989, David Chaum founded DigiCash an eCash digital money system with its CyberBucks and with the blind digital signature technology.Since 1992, Timothy May, John Gilmore (Electronic Frontier Foundation), and Eric Hughes (University of California) have begun holding secret meetings and regular PGP-encrypted mailing through anonymous remailer servers. And finally, in 1993 Eric Hughes published a fundamental document of the movement — А Cypherpunk's Manifesto. The importance of confidentiality, anonymous transactions, cryptographic protection — all these ideas were subsequently implemented in cryptocurrencies.The term "cypherpunk" was first used by hacker and programmer Jude Milhon to a group of crypto-anarchists.In 1995, Julian Assange, the creator of WikiLeaks, published his first post in cypherpunk mailing.In 1996, John Young and Deborah Natsios created the Cryptome, which published data related to security, privacy, freedom, cryptography. It is here that subsequently will be published data from the famous Edward Snowden.In 1997, cryptographer Dr. Adam Back (you know him as CEO of Blockstream) created Hashcash, a distributed anti-spam mechanism.In 1998, computer engineer Wei Dai published two concepts for creating a b-money digital payment system:
In April 2001, Bram Cohen developed the BitTorrent protocol and application.In 2002, Paul Syverson, Roger Dingledine and Nick Mathewson presented the alpha version of the anonymity network named TOR Project.In 2004, cypherpunk Hal Finney created the Reusable Proof of Work (RPoW) algorithm. It was based on Adam Back's Hashcash but its drawback was centralization.In 2005, cryptographer Nick Szabo, who developed the concept of smart contracts in the 1990s, announced the creation of Bit Gold — a digital collectible and investment item.In October 2008, legendary Satoshi Nakamoto created the manifesto “Bitcoin: A Peer-to-Peer Electronic Cash System”, which refers to the works of the cypherpunk classics Adam Back and Wei Dai.In 2011, Ross William Ulbricht aka Dread Pirate Roberts created the Silk Road, the first major market for illegal goods and services on the darknet.In 2016, Julian Assange released the book "Cypherpunks: Freedom and the future of the Internet."At the beginning of 2018, Pavel Durov, the creator of Telegram, announced the launch of the TON multi-blockchain platform and mentioned his plans to launch TON ICO.In 2019, the Tor Project‌ introduced an open anti-censorship group.

Cypherpunk 2020

Plenty of services, products, and technologies were inspired by cypherpunk: Cryptocurrencies, HD (Hierarchical Deterministic) crypto wallets, Coin Mixers, ECDHM addresses, Privacy Coins. The ideas of distribution and anonymity were also implemented in the torrents and VPN. You can see the embodiment of cybersecurity ideas in the electronic signatures and protected messengers (Telegram, Signal, and many others).Why there were so many talks about cypherpunk this spring? In April 2020, Reddit users suggested that the letter from the famous cypherpunks mailing dated September 19, 1999, was written by Satoshi Nakamoto himself (or someone close to him). This letter is about the functioning of ecash. Anonymous (supposed Satoshi) talks about the "public double-spending database" and Wei Dai's b-money as a possible foundation for ecash.In addition, researchers of the mystery "Who is Satoshi Nakamoto?" periodically make some noise and discover the next "secret" about one or another legendary cypherpunks. So, in May 2020, Adam Back wrote in response to videos and new hype discussions that, despite some coincidences, he is not Satoshi.Other heroes of the scene are not idle too: in April 2020, David Chaum received $9.7 million during the presale of the confidential coin xx, created to encourage venture investors.

Conclusion

As you can see from the Satoshi Nakamoto's mentions and from the stories of DigiCash, Hashcash, RPoW, Bit Gold, the movement of cypherpunk influenced a lot the emergence of cryptocurrencies. As governments and corporations restrict freedom and interfere with confidentiality, cypherpunk ideas will periodically rise in popularity. And this confrontation will not end in the coming decades.
submitted by CoinjoyAssistant to bitcoin_uncensored [link] [comments]

What is Blockchain Technology?

What is Blockchain Technology?
The original article appeared here: https://www.securities.io/what-is-blockchain-technology/
Its been almost ten years since Satoshi Nakamoto first introduced Blockchain technology to the world in his 2008 Bitcoin Whitepaper. Since that time, these revolutionary networks have gained popularity in both the corporate and governmental sectors. This growth is easily explained when you consider that blockchain technology provides the world with some unique advantages that were previously unimaginable. Consequently, today, you can find blockchain technology in nearly every sector of the global economy.

What is Blockchain Technology?

A blockchain is a network of computers that share a distributed ledger across all network participants (nodes). This strategy is far different than say, fiat currencies that originate from a centralized authority figure. Importantly, this ledger keeps an unbroken chain of transactions since the birth of the network. This “chain” of transactions grows larger as new “blocks” of transactions are approved and added to it.
Bitcoin Whitepaper
In order to approve new transactions, each node works together with others to validate new blocks. Additionally, the nodes also validate the current state of the entire blockchain. In order for a new block of transactions to be added to the blockchain, they must receive approval from 51% of the network’s nodes. Nodes are also referred to as miners. In this manner, blockchain networks are decentralized networks that provide unmatched security to the world of digital assets.

Security via Decentralization

Decentralization is an important aspect of blockchain technology because it makes these revolutionary ledgers immutable and unalterable. In fact, since there is no centralized attack vector, hacking a blockchain is nearly impossible. The larger the blockchain network, the more secure the data on it remains.
For example, let’s look at the world’s largest blockchain, Bitcoin. Currently, the Bitcoin blockchain has over 10,000 active nodes located across the globe. This distribution means that in order for an attacker to alter even just one tiny piece of information on the blockchain, they would need to successfully hack 5,000+ computers at once.
While this task may not be impossible for the quantum computers of the future, it’s so unprofitable that it makes no sense to even attempt such a monumental task. Additionally, on top of successfully hacking 5000+ computers at once, an attacker would also need a supercomputer to recalculate the new blockchain transactions in time to introduce them into the network. It would literally be more affordable to create a new cryptocurrency from scratch.

Consensus Mechanisms

One of the reasons why blockchain networks are so secure is the integration of consensus mechanisms. Consensus mechanisms are cryptographic protocols that leverage the participants of a blockchain network in securing its data. In the case of Bitcoin, the Proof-of-Work (PoW) consensus mechanism is used.

Proof-of-Work (PoW)

The Proof-of-Work consensus mechanism was revolutionary to the world of cryptography when it was first introduced years prior by Adam Back in his Hashcash whitepaper. In the concept, Back describes the integration of a mathematical equation to the network’s security protocols. In this way, every computer can show “proof” of their work securing the network.

Miner Rewards

It’s important to understand that nodes receive a reward for their mining efforts. These rewards adjust automatically depending on the network’s difficulty and value. In the case of Bitcoin, miners originally received 50 Bitcoin for their efforts. Today, this seems like fortune, but back in 2009, Bitcoin was only worth pennies. As the value of the token rises and the network goes, the mining rewards shrink. Today, Bitcoin miners receive 6.5 BTC if they add the next block to the chain.

SHA-256

Notably, every node validates and secures the blockchain, but only one gets to add the next block of transactions to the network. To determine who the next miner is that gets to add this block, every computer competes in a mathematical race to figure out the PoW equation. In the case of Bitcoin, the equation is known as SHA-256. Importantly, the first SHA algorithm dates back to Hashcash. This early version of the equation was known as SHA-1.
Notably, the SHA-256 equation is so difficult that it’s easier and more efficient for your computer to just make random guesses rather than attempting to figure out the equation directly. The answer to the equation must begin with a predetermined amount of 0s. In the Bitcoin blockchain, the equation’s answer must start with four zeros. However, if the network’s congestion rises, so does the difficulty of these equations. This difficulty adjusts by the addition of another zero at the beginning of the required SHA-256 answer.
Similarly to traditional commodities such as gold, there are costs that are associated with the creation and introduction of these digital assets into the market. These random guesses utilize intense computational power. This power equates to real-world costs such as electricity bills. Studies have shown that securing the Bitcoin network can use more electricity than required by entire countries. Luckily, over 80% of Bitcoin’s power consumption comes from renewable sources such as solar or hydroelectric. This cost of mining also adds measurable value to each Bitcoin.

Miners

As Bitcoin began to gain in profitability, its network’s computing power expanded significantly. In the beginning, nodes, also known as miners, could mine for Bitcoin using nothing more than your home PC. Eventually, miners realized that graphic cards were far better at the repetitive guessing required to figure out the SHA-256 algorithm. This led to a computational race in the market.

ASIC

Eventually, large blockchain firms such as Bitmain introduced Application Specific Integrated Circuit (ASIC) miners into the equation. These purpose-built miners were thousands of times more efficient at guessing the SHA-256 algorithm than the GPUs and CPUs before them. Consequently, their introduction created a scenario in which the average miner now needed to invest thousands in mining equipment to stay relevant.

Mining Pools

Luckily, some creative minds in the field began to think of ways to level the playing field out again. They developed “mining pools.” A mining pool is a network of miners that all share computational power for the common goal of mining blockchain transactions. Importantly, mining pool participants receive a percentage of the reward based on their contributions to the network’s overall hash (computational power).
Importantly, over the last three years, there has been a push to move away from power-hungry consensus mechanisms such as PoW. This desire to secure blockchains in a more efficient manner has led to the development of some truly unique consensus mechanisms in the sector.

Proof-of-Stake (PoS)

The Proof-of-Stake mechanism does away with the difficult mathematical algorithms and instead utilizes a more psychological approach to securing the network. In a PoS blockchain, users don’t need to compete mathematically to add the next block to the blockchain. Instead, PoS users “stake” their coins via network wallets to secure the network. The way staking works is simple.
Keeping a certain amount of coins in your wallet allows you to participate in transaction validations. The more coins you stake, the more likely the chances are you get to add the next block of transactions to the network. In most PoS systems, a miner from those with the most tokens staked at the time receives the chance to add the blocks.
The advantages of a PoS consensus mechanism are immediately evident. For one, you don’t need to pour tons of resources into your network to keep it safe. Additionally, since nodes are chosen based on their amount of staked coins, there is never a scenario in which a node gains anything from validating incorrect transactions. Basically, a hacker would have to fully invest in the cryptocurrency prior to attacking the network. In this way, PoS systems create a huge deterrent to attackers.

The Future of Blockchain Technology

Blockchain technology has come a long way from its early days as a means to secure cryptocurrency networks. Today, blockchain technology has numerous uses across every type of industry imaginable. Specifically, blockchain programs have impacted the logistical, financial, and data security sectors in a major way.

Blockchain Technology Logistics

Blockchain logistical systems are more efficient and cost-effective to operate than traditional paper-based models. In fact, the immutable and unalterable nature of blockchain tech makes it ideally suited to logistical tasks. Soon, you may be able to ascertain much more information regarding the creation and delivery of your products thanks to these new-age systems emerging.

Fundraising

Blockchain technology has also altered the way in which businesses raise funds. In a traditional corporate crowdfunding strategy such as an IPO, companies must balance between cost-effectiveness and participation. The inability to process smaller transactions meant that for the longest time, companies had to turn away potential investors. Nowadays, blockchain technology enables businesses to easily automate these procedures via smart contracts.

Smart Contracts

Smart Contracts feature preprogrammed protocols that execute when they receive a certain amount of cryptocurrency sent to their address. These contracts live on the blockchain and enable remarkable functionality. For example, in the case of fundraising, a smart contract can automate processes such as the approval of investors and the distribution of funds.

Blockchain Technology Today

You can expect to see further expansion of the blockchain sector in the coming months as more governments and institutions explore its benefits. For now, the blockchain revolution is well underway.
submitted by BlockDotCo to u/BlockDotCo [link] [comments]

What Is Proof of Work (PoW)?

What Is Proof of Work (PoW)?
Contents
https://preview.redd.it/6xrtu2r56v151.png?width=1920&format=png&auto=webp&s=21a0175a00217614738e88b6c9d47fd07e0ae305
Introduction
Proof of Work (commonly abbreviated to PoW) is a mechanism for preventing double-spends. Most major cryptocurrencies use this as their consensus algorithm. That’s just what we call a method for securing the cryptocurrency’s ledger.
Proof of Work was the first consensus algorithm to surface, and, to date, remains the dominant one. It was introduced by Satoshi Nakamoto in the 2008 Bitcoin white paper, but the technology itself was conceived long before then.
Adam Back’s HashCash is an early example of a Proof of Work algorithm in the pre-cryptocurrency days. By requiring senders to perform a small amount of computing before sending an email, receivers could mitigate spam. This computation would cost virtually nothing to a legitimate sender, but quickly add up for someone sending emails en masse.

What is a double-spend?

A double-spend occurs when the same funds are spent more than once. The term is used almost exclusively in the context of digital money — after all, you’d have a hard time spending the same physical cash twice. When you pay for a coffee today, you hand cash over to a cashier who probably locks it in a register. You can’t go to the coffee shop across the road and pay for another coffee with the same bill.
In digital cash schemes, there’s the possibility that you could. You’ve surely duplicated a computer file before — you just copy and paste it. You can email the same file to ten, twenty, fifty people.
Since digital money is just data, you need to prevent people from copying and spending the same units in different places. Otherwise, your currency will collapse in no time.
For a more in-depth look at double-spending, check out Double Spending Explained.

Why is Proof of Work necessary?

If you’ve read our guide to blockchain technology, you’ll know that users broadcast transactions to the network. Those transactions aren’t immediately considered valid, though. That only happens when they get added to the blockchain.
The blockchain is a big database that every user can see, so they can check if funds have been spent before. Picture it like this: you and three friends have a notepad. Anytime one of you wants to make a transfer of whatever units you’re using, you write it down — Alice pays Bob five units, Bob pays Carol two units, etc.
There’s another intricacy here — each time you make a transaction, you refer to the transaction where the funds came from. So, if Bob was paying Carol with two units, the entry would actually look like the following: Bob pays Carol two units from this earlier transaction with Alice.
Now, we have a way to track the units. If Bob tries to make another transaction using the same units he just sent to Carol, everyone will know immediately. The group won’t allow the transaction to be added to the notepad.
Now, this might work well in a small group. Everyone knows each other, so they’ll probably agree on which of the friends should add transactions to the notepad. What if we want a group of 10,000 participants? The notepad idea doesn’t scale well, because nobody wants to trust a stranger to manage it.
This is where Proof of Work comes in. It ensures that users aren’t spending money that they don’t have the right to spend. By using a combination of game theory and cryptography, a PoW algorithm enables anyone to update the blockchain according to the rules of the system.

How does PoW work?

Our notepad above is the blockchain. But we don’t add transactions one by one — instead, we lump them into blocks. We announce the transactions to the network, then users creating a block will include them in a candidate block. The transactions will only be considered valid once their candidate block becomes a confirmed block, meaning that it has been added to the blockchain.
Appending a block isn’t cheap, however. Proof of Work requires that a miner (the user creating the block) uses up some of their own resources for the privilege. That resource is computing power, which is used to hash the block’s data until a solution to a puzzle is found.
Hashing the block’s data means that you pass it through a hashing function to generate a block hash. The block hash works like a “fingerprint” — it’s an identity for your input data and is unique to each block.
It’s virtually impossible to reverse a block hash to get the input data. Knowing an input, however, it’s trivial for you to confirm that the hash is correct. You just have to submit the input through the function and check if the output is the same.
In Proof of Work, you must provide data whose hash matches certain conditions. But you don’t know how to get there. Your only option is to pass your data through a hash function and to check if it matches the conditions. If it doesn’t, you’ll have to change your data slightly to get a different hash. Changing even one character in your data will result in a totally different result, so there’s no way of predicting what an output might be.
As a result, if you want to create a block, you’re playing a guessing game. You typically take information on all of the transactions that you want to add and some other important data, then hash it all together. But since your dataset won’t change, you need to add a piece of information that is variable. Otherwise, you would always get the same hash as output. This variable data is what we call a nonce. It’s a number that you’ll change with every attempt, so you’re getting a different hash every time. And this is what we call mining.
Summing up, mining is the process of gathering blockchain data and hashing it along with a nonce until you find a particular hash. If you find a hash that satisfies the conditions set out by the protocol, you get the right to broadcast the new block to the network. At this point, the other participants of the network update their blockchains to include the new block.
For major cryptocurrencies today, the conditions are incredibly challenging to satisfy. The higher the hash rate on the network, the more difficult it is to find a valid hash. This is done to ensure that blocks aren’t found too quickly.
As you can imagine, trying to guess massive amounts of hashes can be costly on your computer. You’re wasting computational cycles and electricity. But the protocol will reward you with cryptocurrency if you find a valid hash.
Let’s recap what we know so far:
  • It’s expensive for you to mine.
  • You’re rewarded if you produce a valid block.
  • Knowing an input, a user can easily check its hash — non-mining users can verify that a block is valid without expending much computational power.
So far, so good. But what if you try to cheat? What’s to stop you from putting a bunch of fraudulent transactions into the block and producing a valid hash?
That’s where public-key cryptography comes in. We won’t go into depth in this article, but check out What is Public-Key Cryptography? for a comprehensive look at it. In short, we use some neat cryptographic tricks that allow any user to verify whether someone has a right to move the funds they’re attempting to spend.
When you create a transaction, you sign it. Anyone on the network can compare your signature with your public key, and check whether they match. They’ll also check if you can actually spend your funds and that the sum of your inputs is higher than the sum of your outputs (i.e., that you’re not spending more than you have).
Any block that includes an invalid transaction will be automatically rejected by the network. It’s expensive for you to even attempt to cheat. You’ll waste your own resources without any reward.
Therein lies the beauty of Proof of Work: it makes it expensive to cheat, but profitable to act honestly. Any rational miner will be seeking ROI, so they can be expected to behave in a way that guarantees revenue.

Proof of Work vs. Proof of Stake

There are many consensus algorithms, but one of the most highly-anticipated ones is Proof of Stake (PoS). The concept dates back to 2011, and has been implemented in some smaller protocols. But it has yet to see adoption in any of the big blockchains.
In Proof of Stake systems, miners are replaced with validators. There’s no mining involved and no race to guess hashes. Instead, users are randomly selected — if they’re picked, they must propose (or “forge”) a block. If the block is valid, they’ll receive a reward made up of the fees from the block’s transactions.
Not just any user can be selected, though — the protocol chooses them based on a number of factors. To be eligible, participants must lock up a stake, which is a predetermined amount of the blockchain’s native currency. The stake works like bail: just as defendants put up a large sum of money to disincentivize them from skipping trial, validators lock up a stake to disincentivize cheating. If they act dishonestly, their stake (or a portion of it) will be taken.
Proof of Stake does have some benefits over Proof of Work. The most notable one is the smaller carbon footprint — since there’s no need for high-powered mining farms in PoS, the electricity consumed is only a fraction of that consumed in PoW.
That said, it has nowhere near the track record of PoW. Although it could be perceived as wasteful, mining is the only consensus algorithm that’s proven itself at scale. In just over a decade, it has secured trillions of dollars worth of transactions. To say with certainty whether PoS can rival its security, staking needs to be properly tested in the wild.

Closing thoughts

Proof of Work was the original solution to the double-spend problem and has proven to be reliable and secure. Bitcoin proved that we don’t need centralized entities to prevent the same funds from being spent twice. With clever use of cryptography, hash functions, and game theory, participants in a decentralized environment can agree on the state of a financial database.
submitted by D-platform to u/D-platform [link] [comments]

Proof Of Work Explained

Proof Of Work Explained
https://preview.redd.it/hl80wdx61j451.png?width=1200&format=png&auto=webp&s=c80b21c53ae45c6f7d618f097bc705a1d8aaa88f
A proof-of-work (PoW) system (or protocol, or function) is a consensus mechanism that was first invented by Cynthia Dwork and Moni Naor as presented in a 1993 journal article. In 1999, it was officially adopted in a paper by Markus Jakobsson and Ari Juels and they named it as "proof of work".
It was developed as a way to prevent denial of service attacks and other service abuse (such as spam on a network). This is the most widely used consensus algorithm being used by many cryptocurrencies such as Bitcoin and Ethereum.
How does it work?
In this method, a group of users competes against each other to find the solution to a complex mathematical puzzle. Any user who successfully finds the solution would then broadcast the block to the network for verifications. Once the users verified the solution, the block then moves to confirm the state.
The blockchain network consists of numerous sets of decentralized nodes. These nodes act as admin or miners which are responsible for adding new blocks into the blockchain. The miner instantly and randomly selects a number which is combined with the data present in the block. To find a correct solution, the miners need to select a valid random number so that the newly generated block can be added to the main chain. It pays a reward to the miner node for finding the solution.
The block then passed through a hash function to generate output which matches all input/output criteria. Once the result is found, other nodes in the network verify and validate the outcome. Every new block holds the hash of the preceding block. This forms a chain of blocks. Together, they store information within the network. Changing a block requires a new block containing the same predecessor. It is almost impossible to regenerate all successors and change their data. This protects the blockchain from tampering.
What is Hash Function?
A hash function is a function that is used to map data of any length to some fixed-size values. The result or outcome of a hash function is known as hash values, hash codes, digests, or simply hashes.
https://preview.redd.it/011tfl8c1j451.png?width=851&format=png&auto=webp&s=ca9c2adecbc0b14129a9b2eea3c2f0fd596edd29
The hash method is quite secure, any slight change in input will result in a different output, which further results in discarded by network participants. The hash function generates the same length of output data to that of input data. It is a one-way function i.e the function cannot be reversed to get the original data back. One can only perform checks to validate the output data with the original data.
Implementations
Nowadays, Proof-of-Work is been used in a lot of cryptocurrencies. But it was first implemented in Bitcoin after which it becomes so popular that it was adopted by several other cryptocurrencies. Bitcoin uses the puzzle Hashcash, the complexity of a puzzle is based upon the total power of the network. On average, it took approximately 10 min to block formation. Litecoin, a Bitcoin-based cryptocurrency is having a similar system. Ethereum also implemented this same protocol.
Types of PoW
Proof-of-work protocols can be categorized into two parts:-
· Challenge-response
This protocol creates a direct link between the requester (client) and the provider (server).
In this method, the requester needs to find the solution to a challenge that the server has given. The solution is then validated by the provider for authentication.
The provider chooses the challenge on the spot. Hence, its difficulty can be adapted to its current load. If the challenge-response protocol has a known solution or is known to exist within a bounded search space, then the work on the requester side may be bounded.
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Source-wiki
· Solution–verification
These protocols do not have any such prior link between the sender and the receiver. The client, self-imposed a problem and solve it. It then sends the solution to the server to check both the problem choice and the outcome. Like Hashcash these schemes are also based on unbounded probabilistic iterative procedures.
https://preview.redd.it/gfobj9xg1j451.png?width=740&format=png&auto=webp&s=2291fd6b87e84395f8a4364267f16f577b5f1832
Source-wiki
These two methods generally based on the following three techniques:-
CPU-bound
This technique depends upon the speed of the processor. The higher the processor power greater will be the computation.
Memory-bound
This technique utilizes the main memory accesses (either latency or bandwidth) in computation speed.
Network-bound
In this technique, the client must perform a few computations and wait to receive some tokens from remote servers.
List of proof-of-work functions
Here is a list of known proof-of-work functions:-
o Integer square root modulo a large prime
o Weaken Fiat–Shamir signatures`2
o Ong–Schnorr–Shamir signature is broken by Pollard
o Partial hash inversion
o Hash sequences
o Puzzles
o Diffie–Hellman–based puzzle
o Moderate
o Mbound
o Hokkaido
o Cuckoo Cycle
o Merkle tree-based
o Guided tour puzzle protocol
A successful attack on a blockchain network requires a lot of computational power and a lot of time to do the calculations. Proof of Work makes hacks inefficient since the cost incurred would be greater than the potential rewards for attacking the network. Miners are also incentivized not to cheat.
It is still considered as one of the most popular methods of reaching consensus in blockchains. Though it may not be the most efficient solution due to high energy extensive usage. But this is why it guarantees the security of the network.
Due to Proof of work, it is quite impossible to alter any aspect of the blockchain, since any such changes would require re-mining all those subsequent blocks. It is also difficult for a user to take control over the network computing power since the process requires high energy thus making these hash functions expensive.
submitted by RumaDas to u/RumaDas [link] [comments]

PoW & PoS...

A Proof-of-Work (PoW) is a piece of data which is costly to produce, so as to satisfy certain requirements, but is trivial to verify. Bitcoin uses the Hashcash PoW. Mining, the process of producing PoW, plays a central role in creating, distributing, and securing Bitcoin and many of its variants. The most common criticism of PoW mining is its massive waste of energy. At the time of writing, the total daily revenue of mining Bitcoin is around $1.8 milion USD. Depending on the aggregate profit margin and the fraction of overall cost that electricity accounts for, we estimate the daily total electricity cost between $200k and $500k USD. In addition to this wastefulness, there are several more reasons why mining remains a very controversial aspect of PoW cryptocurrencies.
Proof-of-Stake is an alternative to Pow, where based on connectivity to the network and random chance, you can receive new coins to assist in the decentralization of the network. One useful feature of Proof-of-Stake is the significant savings in energy consumption in that it requires no dedicated hardware and negligible amounts of electricity to reward miners, and in many cases is far more resilient to a 51% attack on the network. (Blackcoin Core Team 2016)
submitted by KahshCoin to u/KahshCoin [link] [comments]

IOTA and Tangle discussion/info, scam or not?

In the past weeks I heard a lot pros and cons about IOTA, many of them I believe were not true (I'll explain better). I would like to start a serious discussion about IOTA and help people to get into it. Before that I'll contribute with what I know, most things that I will say will have a source link providing some base content.
 
The pros and cons that I heard a lot is listed below, I'll discuss the items marked with *.
Pros
Cons
 

Scalability

Many users claim that the network infinitely scales, that with more transactions on the network the faster it gets. This is not entirely true, that's why we are seeing the network getting congested (pending transactions) at the moment (12/2017).
The network is composed by full-nodes (stores all transactions), each full-node is capable of sending transactions direct to the tangle. An arbitrary user can set a light-node (do not store all transactions, therefore a reduced size), but as it does not stores all transactions and can't decide if there are conflicting transactions (and other stuff) it needs to connect to a full-node (bitifinex node for example) and then request for the full-node to send a transaction to the tangle. The full-node acts like a bridge for a light-node user, the quantity of transactions at the same time that a full-node can push to the tangle is limited by its brandwidth.
What happens at the moment is that there are few full-nodes, but more important than that is: the majority of users are connected to the same full-node basically. The full-node which is being used can't handle all the requested transactions by the light-nodes because of its brandwidth. If you are a light-node user and is experiencing slow transactions you need to manually select other node to get a better performance. Also, you need to verify that the minimum weight magnitude (difficulty of the Hashcash Proof of Work) is set to 14 at least.
The network seems to be fine and it scales, but the steps an user has to make/know are not friendly-user at all. It's necessary to understand that the technology envolved is relative new and still in early development. Do not buy iota if you haven't read about the technology, there is a high chance of you losing your tokens because of various reasons and it will be your own fault. You can learn more about how IOTA works here.
There are some upcoming solutions that will bring the user-experience to a new level, The UCL Wallet (expected to be released at this month, will talk about that soon and how it will help the network) and the Nelson CarrIOTA (this week) besides the official implementations to come in december.
 

Centralization

We all know that currently (2017) IOTA depends on the coordinator because the network is still in its infancy and because of that it is considered centralized by the majority of users.
The coordinator are several full-nodes scattered across the world run by the IOTA foundation. It creates periodic Milestones (zero value transactions which reference valid transactions) which are validated by the entire network. The coordinator sets the general direction for the tangle growth. Every node verifies that the coordinator is not breaking consensus rules by creating iotas out of thin air or approving double-spendings, nodes only tells other nodes about transactions that are valid, if the Coordinator starts issuing bad Milestones, nodes will reject them.
The coordinator is optional since summer 2017, you can choose not implement it in your full-node, any talented programmer could replace Coo logic in IRI with Random Walk Monte Carlo logic and go without its milestones right now. A new kind of distributed coordinator is about to come and then, for the last, its completely removal. You can read more about the coordinator here and here.

Mining-Blockchain-based Cryptocurrencies

These are blockchain-based cryptocurrencies (Bitcoin) that has miners to guarantee its security. Satoshi Nakamoto states several times in the Bitcoin whitepaper that "The system is secure as long as honest nodes collectively control more CPU power than any cooperating group of attacker nodes". We can see in Blockchain.info that nowadays half of the total hashpower in Bitcoin is controlled by 3 companies (maybe only 1 in the future?). Users must trust that these companies will behave honestly and will not use its 50%> hashpower to attack the network eventually. With all that said it's reasonable to consider the IOTA network more decentralized (even with the coordinator) than any mining-blockchain-based cryptocurrency
You can see a comparison between DAG cryptocurrencies here
 

IOTA partnerships

Some partnerships of IOTA foundation with big companies were well known even when they were not officialy published. Some few examples of confirmed partnerships are listed below, others cofirmed partnerships can be seem in the link Partnerships with big companies at the pros section.
So what's up with all alarming in social media about IOTA Foundation faking partnerships with big companies like Microsoft and Cisco?
At Nov. 28th IOTA Foundation announced the Data Marketplace with 30+ companies participating. Basically it's a place for any entity sell data (huge applications, therefore many companies interested), at time of writing (11/12/2017) there is no API for common users, only companies in touch with IOTA Foundation can test it.
A quote from Omkar Naik (Microsoft worker) depicted on the Data Marketplace blog post gave an idea that Microsoft was in a direct partnership with IOTA. Several news websites started writing headlines "Microsoft and IOTA launches" (The same news site claimed latter that IOTA lied about partnership with Microsoft) when instead Microsoft was just one of the many participants of the Data Marketplace. Even though it's not a direct partnership, IOTA and Microsoft are in close touch as seen in IOTA Microsoft and Bosch meetup december 12th, Microsoft IOTA meetup in Paris 14th and Microsoft Azure adds 5 new Blockchain partners (may 2016). If you join the IOTA Slack channel you'll find out that there are many others big companies in close touch with IOTA like BMW, Tesla and other companies. This means that right now there are devs of IOTA working directly with scientists of these companies to help them integrate IOTA on their developments even though there is no direct partnership published, I'll talk more about the use cases soon.
We are excited to partner with IOTA foundation and proud to be associated with its new data marketplace initiative... - Omkar Naik
 

IOTA's use cases

Every cryptocurrency is capable of being a way to exchange goods, you pay for something using the coin token and receive the product. Some of them are more popular or have faster transactions or anonymity while others offers better scalablity or user-friendness. But none of them (except IOTA) are capable of transactioning information with no costs (fee-less transactions), in an securely form (MAM) and being sure that the network will not be harmed when it gets more adopted (scales). These characteristics open the gates for several real world applications, you probably might have heard of Big Data and how data is so important nowadays.
Data sets grow rapidly - in part because they are increasingly gathered by cheap and numerous information-sensing Internet of things devices such as mobile devices, aerial (remote sensing), software logs, cameras, microphones, radio-frequency identification (RFID) readers and wireless sensor networks.
 
It’s just the beginning of the data period. Data is going to be so important for human life in the future. So we are now just starting. We are a big data company, but compared to tomorrow, we are nothing. - Jack Ma (Alibaba)
There are enormous quantities of wasted data, often over 99% is lost to the void, that could potentially contain extremely valuable information if allowed to flow freely in data streams that create an open and decentralized data lake that is accessible to any compensating party. Some of the biggest corporations of the world are purely digital like Google, Facebook and Amazon. Data/information market will be huge in the future and that's why there so many companies interested in what IOTA can offer.
There are several real world use cases being developed at the moment, many of them if successful will revolutionize the world. You can check below a list of some of them.
Extra
These are just few examples, there are a lot more ongoing and to explore.
 

IOTA Wallet (v2.5.4 below)

For those who have read a lot about IOTA and know how it works the wallet is fine, but that's not the case for most users. Issues an user might face if decide to use the current wallet:
Problems that could be easily avoided with a better understand of the network/wallet or with a better wallet that could handle these issues. As I explained before, some problems during the "congestion" of the network could be simply resolved if stuff were more user-friendly, this causes many users storing their iotas on exchanges which is not safe either.
The upcoming (dec 2017) UCL Wallet will solve most of these problems. It will switch between nodes automatically and auto-reattach transactions for example (besides other things). You can have full a overview of it here and here. Also, the upcoming Nelson CarrIOTA will help on automatic peer discovery for users setup their nodes more easily.
 

IOTA Vulnerability issue

On sept 7th 2017 a team from MIT reported a cryptographic issue on the hash function Curl. You can see the full response of IOTA members below.
Funds were never in danger as such scenarios depicted on the Neha's blogpost were not pratically possible and the arguments used on the blogpost had'nt fundamentals, all the history you can check by yourself on the responses. Later it was discovered that the whole Neha Narula's team were envolved in other concurrent cryptocurrency projects
Currently IOTA uses the relatively hardware intensive NIST standard SHA-3/Keccak for crucial operations for maximal security. Curl is continuously being audited by more cryptographers and security experts. Recenlty IOTA Foundation hired Cybercrypt, the world leading lightweight cryptography and security company from Denmark to take the Curl cryptography to its next maturation phase.
 
It took me a couple of days to gather the informations presented, I wanted it to make easier for people who want to get into it. It might probably have some mistakes so please correct me if I said something wrong. Here are some useful links for the community.
This is my IOTA donation address, in case someone wants to donate I will be very thankful. I truly believe in this project's potential.
I9YGQVMWDYZBLHGKMTLBTAFBIQHGLYGSAGLJEZIV9OKWZSHIYRDSDPQQLTIEQEUSYZWUGGFHGQJLVYKOBWAYPTTGCX
 
This is a donation address, if you want to do the same you might pay attention to some important details:
  • Create a seed for only donation purposes.
  • Generate a address and publish it for everyone.
  • If you spend any iota you must attach a new address to the tangle and refresh your donation address published before to everyone.
  • If someone sends iota to your previous donation address after you have spent from it you will probably lose the funds that were sent to that specific address.
  • You can visualize how addresses work in IOTA here and here.
This happens because IOTA uses Winternitz one-time signature to become quantum resistent. Every time you spend iota from a address, part of the private key of that specific address is revealed. This makes easier for attackers to steal that address balance. Attackers can search if an address has been reused on the tangle explorer and try to brute force the private key since they already know part of it.
submitted by mvictordbz to CryptoCurrency [link] [comments]

Nuvmining | Bitcoin Mining

In easy terms we can define Bitcoin mining as the process of including deals to your ledger. The procedure help in confirming that sufficient computational initiative is devoted to a block. The process additionally produces brand-new Bitcoins in each block.
nuv mining
To extract you must take a look at the deals in a block and afterwards validate their validity. You must then pick one of the most current transactions in the header of the most recent block as well as put them into the brand-new block as a hash
Before a new block is added to the regional blockchain, you need to address the evidence of work issue. This is a problem that is made to guarantee that the new block to be developed is tough and the data utilized in making the block pleases the put down requirements.
nuvmining
Bitcoin utilizes the Hashcash proof of work; for that reason, for you to fix the trouble you need to develop a hash.
Exactly how to create a hash.
If you know exactly how to do it it's really easy to produce a hash from a collection of Bitcoin blocks. The unfavorable point is that you can not exercise the information by merely looking at the hash-you requirement to examine different blocks.
Hashes are located at the blocks and also you have to integrate them to prove that your information is legit. There are some miners who attempt to take the very easy course by attempting to fake a deal by transforming a currently saved block.
You ought to note that each hash is one-of-a-kind as well as details to an offered block; consequently, when you manipulate a provided block, you alter the hash. When a provided miner runs a hashtag feature on the adjusted block, the block is located to be phony, as well as you will not obtain any type of incentives.
Mining incentive
When you efficiently resolve a proof of work, you get a mining reward. The number of Bitcoins in the reward depends on a number of variables such as intricacy of the trouble. For you to make more money you need to resolve many troubles. You additionally require to have broadband computers to enable you to resolve as many troubles as possible.
Currently, mining swimming pools have emerged as well as are found on an extremely basic principle. Below a team of miners integrated as well as deal with a number of blocks. When the trouble is fixed, the miners share the incentives.
Verdict
With the appropriate information and also tools Bitcoin mining is not only rewarding, it's additionally an enjoyable and safe method to move cash throughout the web. To make as much money as possible you need to have the appropriate software application and also powerful computer hardware.
submitted by Nuvmining to u/Nuvmining [link] [comments]

Jewish Intelligence 029: AJM Taiwan Salon will be held smoothly!

Jewish Intelligence 029: AJM Taiwan Salon will be held smoothly!


https://preview.redd.it/ph48j6on4sv31.png?width=315&format=png&auto=webp&s=6a261ba4424f4bf265d624255b7c03b430e1eb77
News internal reference:
1. AJM Taiwan Salon will be held smoothly!
According to official sources, the AJM Taiwan Salon, hosted by the WBCC Global Blockchain Alliance, was successfully held in Taiwan on October 20. Guests attending the event included the gold medal instructor in the blockchain industry in Malaysia, the KOL in the blockchain industry, the entrepreneurs of quality projects, the media and core users of the AJM Southeast Asia community. The salon theme revolves around AJM's fourth-generation blockchain technology, smart contract development, and landing ecological applications. It aims to explore and seek to promote the sustainable development of the blockchain digital economy.
2. Facebook said that Libra plans to use cryptocurrencies based on its own currency, such as the US dollar, rather than the initial package of currencies. Calibra CEO David Marcus said that in addition to a stable currency based on a basket of currencies, a series of single currency stable coins can be created.
3. French Finance Minister Bruno Le Maire said that Libra may bring financial risks to the EU.
4. The CEO of Calibra stated that Libra will not be controlled by a company and the Libra Association welcomes competition.
5. Blockchain company HashCash is working with the UAE based global bank to launch a blockchain-based commercial loan solution.
6. Decentralized game platform sandbox launches Japanese version, allowing users to create NFT assets
7, Bitcoin core developers: French currency is not a real property
8. Vice Governor of Hebei Province: Xiong'an New District will build technical applications such as personal and institutional credit accounts based on blockchain technology in the future.
Market analysis:

https://preview.redd.it/0fleebxo4sv31.png?width=556&format=png&auto=webp&s=010bb0f33c9b27fa670fe57bcd40a9338989d996
AJM rebounded to ease the volatility trend and continue to be bullish in the medium and long term
Judging from the data of a lot of coins, AJM has been oscillating, and the amplitude is getting smaller and smaller, and there is an upward trend in the short term.
From a technical point of view, AJM has full support at the bottom. Brin has signs of small opening. Although the volume can be reduced, the market has not changed. The price in the general direction has gradually strengthened. For medium and long-term investors, as long as The price has not fallen below the trend line below, and it is still dominated by the currency.

https://preview.redd.it/cfw060wp4sv31.png?width=494&format=png&auto=webp&s=0f4c4cc05ff78b71179aa5af6346f39350469082
BTC has been slightly affected by the news, and the volume is still shrinking. The longer the sideways time here, the worse it is for the market, because it will form a certain set of plates, and then think again. It is difficult to pass this interval, or to maintain the previous point of view. At present, it is still a range of volatility. The 5-week line has been basically completed. Now I don’t see any tendency to stand back to the 5-week line. I personally think that no matter which one. In terms of the target, the target does not have the expectation of a sharp rebound. It is still oscillating near the lower shadow line. The long and short sides have not yet won the match, but they have already tested the support of $7,700 four times. If this time, the point will be lowered again. If it is, it is likely to fall below the support of this point. Personally, the next support is expected to be around $6,800-6,900. If the target regains its 5-week line and the 5-week line turns upwards, the conclusion is not valid.
End of the article:
There are mountains that can't go to the top
Only people who can't find a way
The trend is right for everything. I believe that we need to persist and persist in gaining. The strategy of trading is not static, people who understand do not need to explain, and those who need explanation should be patient.
Ajm telegraph group address:
Https://t.me/ajmofficial_global

https://preview.redd.it/na4r0a9r4sv31.png?width=625&format=png&auto=webp&s=56ca065a504bae142aa96aa31dc709542677c787
submitted by gswt to u/gswt [link] [comments]

CRYPTOCURRENCY BITCOIN

CRYPTOCURRENCY BITCOIN
Bitcoin Table of contents expand: 1. What is Bitcoin? 2. Understanding Bitcoin 3. How Bitcoin Works 4. What's a Bitcoin Worth? 5. How Bitcoin Began 6. Who Invented Bitcoin? 7. Before Satoshi 8. Why Is Satoshi Anonymous? 9. The Suspects 10. Can Satoshi's Identity Be Proven? 11. Receiving Bitcoins As Payment 12. Working For Bitcoins 13. Bitcoin From Interest Payments 14. Bitcoins From Gambling 15. Investing in Bitcoins 16. Risks of Bitcoin Investing 17. Bitcoin Regulatory Risk 18. Security Risk of Bitcoins 19. Insurance Risk 20. Risk of Bitcoin Fraud 21. Market Risk 22. Bitcoin's Tax Risk What is Bitcoin?
Bitcoin is a digital currency created in January 2009. It follows the ideas set out in a white paper by the mysterious Satoshi Nakamoto, whose true identity is yet to be verified. Bitcoin offers the promise of lower transaction fees than traditional online payment mechanisms and is operated by a decentralized authority, unlike government-issued currencies.
There are no physical bitcoins, only balances kept on a public ledger in the cloud, that – along with all Bitcoin transactions – is verified by a massive amount of computing power. Bitcoins are not issued or backed by any banks or governments, nor are individual bitcoins valuable as a commodity. Despite it not being legal tender, Bitcoin charts high on popularity, and has triggered the launch of other virtual currencies collectively referred to as Altcoins.
Understanding Bitcoin Bitcoin is a type of cryptocurrency: Balances are kept using public and private "keys," which are long strings of numbers and letters linked through the mathematical encryption algorithm that was used to create them. The public key (comparable to a bank account number) serves as the address which is published to the world and to which others may send bitcoins. The private key (comparable to an ATM PIN) is meant to be a guarded secret and only used to authorize Bitcoin transmissions. Style notes: According to the official Bitcoin Foundation, the word "Bitcoin" is capitalized in the context of referring to the entity or concept, whereas "bitcoin" is written in the lower case when referring to a quantity of the currency (e.g. "I traded 20 bitcoin") or the units themselves. The plural form can be either "bitcoin" or "bitcoins."
How Bitcoin Works Bitcoin is one of the first digital currencies to use peer-to-peer technology to facilitate instant payments. The independent individuals and companies who own the governing computing power and participate in the Bitcoin network, also known as "miners," are motivated by rewards (the release of new bitcoin) and transaction fees paid in bitcoin. These miners can be thought of as the decentralized authority enforcing the credibility of the Bitcoin network. New bitcoin is being released to the miners at a fixed, but periodically declining rate, such that the total supply of bitcoins approaches 21 million. One bitcoin is divisible to eight decimal places (100 millionths of one bitcoin), and this smallest unit is referred to as a Satoshi. If necessary, and if the participating miners accept the change, Bitcoin could eventually be made divisible to even more decimal places. Bitcoin mining is the process through which bitcoins are released to come into circulation. Basically, it involves solving a computationally difficult puzzle to discover a new block, which is added to the blockchain and receiving a reward in the form of a few bitcoins. The block reward was 50 new bitcoins in 2009; it decreases every four years. As more and more bitcoins are created, the difficulty of the mining process – that is, the amount of computing power involved – increases. The mining difficulty began at 1.0 with Bitcoin's debut back in 2009; at the end of the year, it was only 1.18. As of February 2019, the mining difficulty is over 6.06 billion. Once, an ordinary desktop computer sufficed for the mining process; now, to combat the difficulty level, miners must use faster hardware like Application-Specific Integrated Circuits (ASIC), more advanced processing units like Graphic Processing Units (GPUs), etc.
What's a Bitcoin Worth? In 2017 alone, the price of Bitcoin rose from a little under $1,000 at the beginning of the year to close to $19,000, ending the year more than 1,400% higher. Bitcoin's price is also quite dependent on the size of its mining network since the larger the network is, the more difficult – and thus more costly – it is to produce new bitcoins. As a result, the price of bitcoin has to increase as its cost of production also rises. The Bitcoin mining network's aggregate power has more than tripled over the past twelve months.
How Bitcoin Began
Aug. 18, 2008: The domain name bitcoin.org is registered. Today, at least, this domain is "WhoisGuard Protected," meaning the identity of the person who registered it is not public information.
Oct. 31, 2008: Someone using the name Satoshi Nakamoto makes an announcement on The Cryptography Mailing list at metzdowd.com: "I've been working on a new electronic cash system that's fully peer-to-peer, with no trusted third party. The paper is available at http://www.bitcoin.org/bitcoin.pdf." This link leads to the now-famous white paper published on bitcoin.org entitled "Bitcoin: A Peer-to-Peer Electronic Cash System." This paper would become the Magna Carta for how Bitcoin operates today.
Jan. 3, 2009: The first Bitcoin block is mined, Block 0. This is also known as the "genesis block" and contains the text: "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks," perhaps as proof that the block was mined on or after that date, and perhaps also as relevant political commentary.
Jan. 8, 2009: The first version of the Bitcoin software is announced on The Cryptography Mailing list.
Jan. 9, 2009: Block 1 is mined, and Bitcoin mining commences in earnest.
Who Invented Bitcoin?
No one knows. Not conclusively, at any rate. Satoshi Nakamoto is the name associated with the person or group of people who released the original Bitcoin white paper in 2008 and worked on the original Bitcoin software that was released in 2009. The Bitcoin protocol requires users to enter a birthday upon signup, and we know that an individual named Satoshi Nakamoto registered and put down April 5 as a birth date. And that's about it.
Before Satoshi
Though it is tempting to believe the media's spin that Satoshi Nakamoto is a solitary, quixotic genius who created Bitcoin out of thin air, such innovations do not happen in a vacuum. All major scientific discoveries, no matter how original-seeming, were built on previously existing research. There are precursors to Bitcoin: Adam Back’s Hashcash, invented in 1997, and subsequently Wei Dai’s b-money, Nick Szabo’s bit gold and Hal Finney’s Reusable Proof of Work. The Bitcoin white paper itself cites Hashcash and b-money, as well as various other works spanning several research fields.
Why Is Satoshi Anonymous?
There are two primary motivations for keeping Bitcoin's inventor keeping his or her or their identity secret. One is privacy. As Bitcoin has gained in popularity – becoming something of a worldwide phenomenon – Satoshi Nakamoto would likely garner a lot of attention from the media and from governments.
The other reason is safety. Looking at 2009 alone, 32,489 blocks were mined; at the then-reward rate of 50 BTC per block, the total payout in 2009 was 1,624,500 BTC, which at today’s prices is over $900 million. One may conclude that only Satoshi and perhaps a few other people were mining through 2009 and that they possess a majority of that $900 million worth of BTC. Someone in possession of that much BTC could become a target of criminals, especially since bitcoins are less like stocks and more like cash, where the private keys needed to authorize spending could be printed out and literally kept under a mattress. While it's likely the inventor of Bitcoin would take precautions to make any extortion-induced transfers traceable, remaining anonymous is a good way for Satoshi to limit exposure.
The Suspects
Numerous people have been suggested as possible Satoshi Nakamoto by major media outlets. Oct. 10, 2011, The New Yorker published an article speculating that Nakamoto might be Irish cryptography student Michael Clear or economic sociologist Vili Lehdonvirta. A day later, Fast Company suggested that Nakamoto could be a group of three people – Neal King, Vladimir Oksman and Charles Bry – who together appear on a patent related to secure communications that were filed two months before bitcoin.org was registered. A Vice article published in May 2013 added more suspects to the list, including Gavin Andresen, the Bitcoin project’s lead developer; Jed McCaleb, co-founder of now-defunct Bitcoin exchange Mt. Gox; and famed Japanese mathematician Shinichi Mochizuki.
In December 2013, Techcrunch published an interview with researcher Skye Grey who claimed textual analysis of published writings shows a link between Satoshi and bit-gold creator Nick Szabo. And perhaps most famously, in March 2014, Newsweek ran a cover article claiming that Satoshi is actually an individual named Satoshi Nakamoto – a 64-year-old Japanese-American engineer living in California. The list of suspects is long, and all the individuals deny being Satoshi.
Can Satoshi's Identity Be Proven?
It would seem even early collaborators on the project don’t have verifiable proof of Satoshi’s identity. To reveal conclusively who Satoshi Nakamoto is, a definitive link would need to be made between his/her activity with Bitcoin and his/her identity. That could come in the form of linking the party behind the domain registration of bitcoin.org, email and forum accounts used by Satoshi Nakamoto, or ownership of some portion of the earliest mined bitcoins. Even though the bitcoins Satoshi likely possesses are traceable on the blockchain, it seems he/she has yet to cash them out in a way that reveals his/her identity. If Satoshi were to move his/her bitcoins to an exchange today, this might attract attention, but it seems unlikely that a well-funded and successful exchange would betray a customer's privacy.
Receiving Bitcoins As Payment
Bitcoins can be accepted as a means of payment for products sold or services provided. If you have a brick and mortar store, just display a sign saying “Bitcoin Accepted Here” and many of your customers may well take you up on it; the transactions can be handled with the requisite hardware terminal or wallet address through QR codes and touch screen apps. An online business can easily accept bitcoins by just adding this payment option to the others it offers, like credit cards, PayPal, etc. Online payments will require a Bitcoin merchant tool (an external processor like Coinbase or BitPay).
Working For Bitcoins
Those who are self-employed can get paid for a job in bitcoins. There are several websites/job boards which are dedicated to the digital currency:
Work For Bitcoin brings together work seekers and prospective employers through its websiteCoinality features jobs – freelance, part-time and full-time – that offer payment in bitcoins, as well as Dogecoin and LitecoinJobs4Bitcoins, part of reddit.comBitGigs
Bitcoin From Interest Payments
Another interesting way (literally) to earn bitcoins is by lending them out and being repaid in the currency. Lending can take three forms – direct lending to someone you know; through a website which facilitates peer-to-peer transactions, pairing borrowers and lenders; or depositing bitcoins in a virtual bank that offers a certain interest rate for Bitcoin accounts. Some such sites are Bitbond, BitLendingClub, and BTCjam. Obviously, you should do due diligence on any third-party site.
Bitcoins From Gambling
It’s possible to play at casinos that cater to Bitcoin aficionados, with options like online lotteries, jackpots, spread betting, and other games. Of course, the pros and cons and risks that apply to any sort of gambling and betting endeavors are in force here too.
Investing in Bitcoins
There are many Bitcoin supporters who believe that digital currency is the future. Those who endorse it are of the view that it facilitates a much faster, no-fee payment system for transactions across the globe. Although it is not itself any backed by any government or central bank, bitcoin can be exchanged for traditional currencies; in fact, its exchange rate against the dollar attracts potential investors and traders interested in currency plays. Indeed, one of the primary reasons for the growth of digital currencies like Bitcoin is that they can act as an alternative to national fiat money and traditional commodities like gold.
In March 2014, the IRS stated that all virtual currencies, including bitcoins, would be taxed as property rather than currency. Gains or losses from bitcoins held as capital will be realized as capital gains or losses, while bitcoins held as inventory will incur ordinary gains or losses.
Like any other asset, the principle of buying low and selling high applies to bitcoins. The most popular way of amassing the currency is through buying on a Bitcoin exchange, but there are many other ways to earn and own bitcoins. Here are a few options which Bitcoin enthusiasts can explore.
Risks of Bitcoin Investing
Though Bitcoin was not designed as a normal equity investment (no shares have been issued), some speculative investors were drawn to the digital money after it appreciated rapidly in May 2011 and again in November 2013. Thus, many people purchase bitcoin for its investment value rather than as a medium of exchange.
However, their lack of guaranteed value and digital nature means the purchase and use of bitcoins carries several inherent risks. Many investor alerts have been issued by the Securities and Exchange Commission (SEC), the Financial Industry Regulatory Authority (FINRA), the Consumer Financial Protection Bureau (CFPB), and other agencies.
The concept of a virtual currency is still novel and, compared to traditional investments, Bitcoin doesn't have much of a long-term track record or history of credibility to back it. With their increasing use, bitcoins are becoming less experimental every day, of course; still, after eight years, they (like all digital currencies) remain in a development phase, still evolving. "It is pretty much the highest-risk, highest-return investment that you can possibly make,” says Barry Silbert, CEO of Digital Currency Group, which builds and invests in Bitcoin and blockchain companies.
Bitcoin Regulatory Risk
Investing money into Bitcoin in any of its many guises is not for the risk-averse. Bitcoins are a rival to government currency and may be used for black market transactions, money laundering, illegal activities or tax evasion. As a result, governments may seek to regulate, restrict or ban the use and sale of bitcoins, and some already have. Others are coming up with various rules. For example, in 2015, the New York State Department of Financial Services finalized regulations that would require companies dealing with the buy, sell, transfer or storage of bitcoins to record the identity of customers, have a compliance officer and maintain capital reserves. The transactions worth $10,000 or more will have to be recorded and reported.
Although more agencies will follow suit, issuing rules and guidelines, the lack of uniform regulations about bitcoins (and other virtual currency) raises questions over their longevity, liquidity, and universality.
Security Risk of Bitcoins
Bitcoin exchanges are entirely digital and, as with any virtual system, are at risk from hackers, malware and operational glitches. If a thief gains access to a Bitcoin owner's computer hard drive and steals his private encryption key, he could transfer the stolen Bitcoins to another account. (Users can prevent this only if bitcoins are stored on a computer which is not connected to the internet, or else by choosing to use a paper wallet – printing out the Bitcoin private keys and addresses, and not keeping them on a computer at all.) Hackers can also target Bitcoin exchanges, gaining access to thousands of accounts and digital wallets where bitcoins are stored. One especially notorious hacking incident took place in 2014, when Mt. Gox, a Bitcoin exchange in Japan, was forced to close down after millions of dollars worth of bitcoins were stolen.
This is particularly problematic once you remember that all Bitcoin transactions are permanent and irreversible. It's like dealing with cash: Any transaction carried out with bitcoins can only be reversed if the person who has received them refunds them. There is no third party or a payment processor, as in the case of a debit or credit card – hence, no source of protection or appeal if there is a problem.
Insurance Risk
Some investments are insured through the Securities Investor Protection Corporation. Normal bank accounts are insured through the Federal Deposit Insurance Corporation (FDIC) up to a certain amount depending on the jurisdiction. Bitcoin exchanges and Bitcoin accounts are not insured by any type of federal or government program.
Risk of Bitcoin Fraud
While Bitcoin uses private key encryption to verify owners and register transactions, fraudsters and scammers may attempt to sell false bitcoins. For instance, in July 2013, the SEC brought legal action against an operator of a Bitcoin-related Ponzi scheme.
Market Risk
Like with any investment, Bitcoin values can fluctuate. Indeed, the value of the currency has seen wild swings in price over its short existence. Subject to high volume buying and selling on exchanges, it has a high sensitivity to “news." According to the CFPB, the price of bitcoins fell by 61% in a single day in 2013, while the one-day price drop in 2014 has been as big as 80%.
If fewer people begin to accept Bitcoin as a currency, these digital units may lose value and could become worthless. There is already plenty of competition, and though Bitcoin has a huge lead over the other 100-odd digital currencies that have sprung up, thanks to its brand recognition and venture capital money, a technological break-through in the form of a better virtual coin is always a threat.
Bitcoin's Tax Risk
As bitcoin is ineligible to be included in any tax-advantaged retirement accounts, there are no good, legal options to shield investments from taxation.
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Related Terms
Satoshi
The satoshi is the smallest unit of the bitcoin cryptocurrency. It is named after Satoshi Nakamoto, the creator of the protocol used in block chains and the bitcoin cryptocurrency.
Chartalism Chartalism is a non-mainstream theory of money that emphasizes the impact of government policies and activities on the value of money.
Satoshi Nakamoto The name used by the unknown creator of the protocol used in the bitcoin cryptocurrency. Satoshi Nakamoto is closely-associated with blockchain technology.
Bitcoin Mining, Explained Breaking down everything you need to know about Bitcoin Mining, from Blockchain and Block Rewards to Proof-of-Work and Mining Pools.
Understanding Bitcoin Unlimited Bitcoin Unlimited is a proposed upgrade to Bitcoin Core that allows larger block sizes. The upgrade is designed to improve transaction speed through scale.
Blockchain Explained
A guide to help you understand what blockchain is and how it can be used by industries. You've probably encountered a definition like this: “blockchain is a distributed, decentralized, public ledger." But blockchain is easier to understand than it sounds.
Top 6 Books to Learn About Bitcoin About UsAdvertiseContactPrivacy PolicyTerms of UseCareers Investopedia is part of the Dotdash publishing family.The Balance Lifewire TripSavvy The Spruceand more
By Satoshi Nakamoto
Read it once, go read other crypto stuff, read it again… keep doing this until the whole document makes sense. It’ll take a while, but you’ll get there. This is the original whitepaper introducing and explaining Bitcoin, and there’s really nothing better out there to understand on the subject.
“What is needed is an electronic payment system based on cryptographic proof instead of trust, allowing any two willing parties to transact directly with each other without the need for a trusted third party

submitted by adrian_morrison to BlockchainNews [link] [comments]

Stellar Lumens HODL alert: 2017 Round up, Partnerships, Lumens vs. Other Cryptos

Welcome everyone! The future of Stellar Lumens is bright! Today we will look at the accomplishments of Stellar.org in 2017.
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2017 Round Up
IBM / Stellar Partnership
• Kik Messenger’s KIN coin to move from Ethereum to Stellar in 2018
• Stellar ATM introduced in Singapore
• Jed McCaleb confirms IBM/Stellar has 30 banks on board (Youtube Video)
Lightyear.io enables forward thinking financial entities to easily join the Stellar ecosystem.
• IBM adds 8 new validators from 8 different countries onto the Stellar network (article)
Forbes calls Stellar “venmo, but on a global scale - and for larger bodies like banks and corporations.”
• Stellar Lumens Is Up 6,300% Since March and Is Aiming for Big Blockchain Partners (article)
• Many new partnerships (listed below) that will be using the Stellar network in 2018.
Binance and GoPax Exchanges Adds Stellar
Ledger Nano S support is now available for Lumens (XLM)
• The next coin to break into the top 10 cryptos (article)
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2017 Partnerships & Financial Institutions
IBM - is an American multinational technology company headquartered in Armonk, New York, United States, with operations in over 170 countries. IBM partnered with Stellar to help financial institutions address the processes of universal cross-border payments, designed to reduce the settlement time and lower the cost of completing global payments for businesses and consumers.
SatoshiPay - a web payment system that helps online publishers monetize digital assets like news articles, videos, or PDFs in tiny increments without friction.
EXCH.ONE - is a FinTech software company based in Switzerland currently working to integrate its platform and its first technology adopter Euro Exchange Securities UK Ltd. into the Stellar network. This addition to the Stellar network will bring access to currency markets of South and Central America,UK and a number of EU countries.
Novati (ASX:NOV) - is an Australian-based software technology and payment services provider. Novatti is currently working to integrate it’s platform into the Stellar network with the ultimate aim to build a global money transfer solution to provide cross border, cross currency and cross asset payments.
Pundi X - is an Indonesia based fintech company that provides POS device, debit card, multi-currency wallet that empowers individuals to buy and sell cryptocurrency at any physical store in the world. They say "buying cryptocurrency should be as easy as buying a bottled water."
MoneyMatch - is a Malaysia based fintech startup that provides a fully-digital peer-to-peer currency exchange platform for customers to transfer and exchange foreign currencies with complete ease and at great value. The company plans to integrate with the Stellar network and enable pay in and pay out from Malaysia.
Streami - is a Korea based fintech company that offers blockchain enabled cross-border remittance service and recently launched a cryptocurrency exchange. The partnership extends both on the exchange side and remittance operations.
Neoframe - is developing and marketing trading solutions for big brokerage firms in Korea and extends its business to blockchain based applications. Neoframe developed high performance centralized cryptocurrency exchange as well as secure wallet solutions and is working with big financial players. The company is planning to launch a remittance business for ASEAN countries (Thailand, Vietnam, Indonesia, Malaysia, Philippines, Singapore, Myanmar (Burma), Cambodia, Laos, Brunei) using Stellar.
SureRemit($RMT) - is a Nigeria based global non-cash remittances company. SureRemit leverages the Stellar blockchain platform to connect immigrants abroad directly with merchants that provide the services needed by their loved ones back home. With Remit tokens, immigrants all over the world can access digital shopping vouchers that can be spent on goods and services at accepting merchants wherever they are.
Cowrie Integrated Systems - is a Nigerian based Value Added Service Provider. Cowrie provides services at the intersection between telecoms and finance. Cowrie recently joined the Stellar network to bring novel fintech services to the African market.
Smartlands - is a Stellar-based platform designed to create a new class of low-risk tokens, secured by real, profitable assets in the real-world economy. Smartlands is designed to promote investments in the agricultural sector by allowing investment in individual projects, agricultural companies or indexes of groups of projects. These investments will be fully collateralized by agricultural real estate, other productive assets such as fruit or nut trees or, in some cases, the actual crop.
Klick-Ex - is an award winning regional cross-border payments system delivering financial infrastructure for emerging markets. It has been responsible for dramatic uptake in digital financial services in unbanked regions of the world, and lowering costs for banks, central banks and consumers in low liquidity currencies. Its key presence is in the Pacific and Europe, and it is a founding member of www.APFII.org processing more than 775,000 transactions per second, per billion of population (source).
Mobius - Mobius connects any app, device, and data stream to the blockchain ecosystem. Our simple and easy to use bidirectional API allows non-blockchain developers to easily connect resources to smart contracts and more. The Mobius MVP acts like Stripe for Blockchain by introducing innovative standards for cross-blockchain login, payment, smart contract management, and oracles. The Mobius Team includes David Gobaud, Jed McCaleb (Stellar.org founder), Jackson Palmer (creator of Dogecoin), and Chandler Guo (notorious Bitcoin & blockchain investor).
Chaineum - Chaineum, the first French ICO Boutique, will use the Stellar network for upcoming ICOs. “Chaineum is positioned as the first “ICO Boutique” in France, providing a range of end-to-end services to companies and international start-ups wishing to develop with this new funding mechanism. Chaineum is preparing 8 ICOs by the end of 2017, for European, North American and Asian companies, of which cumulative amount could reach € 200 million." (source)
Poseidon Foundation - Poseidon will simplify the carbon credit market with the creation of an ecosystem built on Stellar.org’s blockchain technology. This technology will prevent double counting of carbon and will be consistent across jurisdictions, making it easier for companies to deliver and measure progress towards their climate targets or other goals such as deforestation-free commitments.
Remitr - Remitr is a global platform for cross border payments, licensed in Canada. Remitr uses the Stellar network for international settlements for businesses as well as other payment partners. Remitr’s own payout network of 63 countries, comprising several currencies, is extended onto the Stellar network.
MSewa Software Solution (MSS) - MSewa Software Solution (MSS) Payments provides a one-stop digital payment service available across the Globe. MSS Payments aims at serving the consumers (Banked, Unbanked and Underbanked) with mobile banking facilities on the move from anywhere by transferring funds in their mobile phone.
PesaChoice - PesaChoice is a leader in international bill payment services for the African diaspora. PesaChoice aims at making international bill payment process easy, seamless, secure, with reasonable and competitive service fees, and up to date technological advances.
SendX - Singapore based SendX, in partnership with Stellar, is the better way to move money worldwide. The SendX team believes that the future of transactions is decentralized and distributed, bringing true equity to everyone across the value chain.
VoguePay - VoguePay, with offices in the United Kingdom and Nigeria, is partnering with Stellar to become the cheapest and most efficient way to send money between the United Kingdom and Nigeria. In the coming months, they expect to expand this service to other selected African countries.
HashCash - Hashcash consultants build financial solutions for banks and financial institutions over blockchain. We leverage the Stellar platform to build products that vastly improve the remittance and payments experience for banks and their customers. Transfers happen lightning fast at a fraction of current rates and operational cost is significantly reduced. HashCash is headquartered in India, with operations across South Asia and the Gulf.
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Stellar Lumens vs Other Cryptocurrencies
Lumens vs. Bitcoin: Jed McCaleb spoke at Distributed Markets in 2017 about the advantages, but more importantly, the disadvantages of Bitcoin. Listen to the talk here. Jed said, “Bitcoin is this awesome innovation. The first thing it does is converts a real world resource, electricity, into a digital asset. So it takes something from the real world and puts it into the digital realm. The second thing it does is provides immutable public record. It’s basically a database that everyone can see but no one change arbitrarily… That’s great, Bitcoin solves the double spin problem [ of proving possession and transmitting volume]… [However, to fix the problems of bitcoin] you might think well maybe we’ll just kind of keep adding [software] to Bitcoin until we get there, but that’s not really the way software works. You want to have the design from the beginning and solve these simple issues. Bitcoin was designed to be a new currency, it wasn’t really designed to be this unifying universal payment network. So that’s what Stellar does. It solves these three remaining issues.”
Lumens vs. Bitcoin #2: According to wired.com, "Bitcoin mining guzzles energy - and it's carbon footprint just keeps growing." Wired says "Today, each bitcoin transaction requires the same amount of energy used to power nine homes in the US for one day... The total energy use of this web of hardware is huge—an estimated 31 terawatt-hours per year. More than 150 individual countries in the world consume less energy annually. And that power-hungry network is currently increasing its energy use every day by about 450 gigawatt-hours, roughly the same amount of electricity the entire country of Haiti uses in a year." Because Stellar is based on a consensus algorithm rather than mining, it takes much less energy to run the Stellar network. The Poseidon Foundation decided to build their platform on Stellar rather than Ethereum or Bitcoin because of this (twitter source).
Lumens ICO tokens vs. Ethereum ICO tokens: According to Stellar.org, "traditionally, ICO tokens have been issued on the Ethereum network in the form of ERC20 tokens. ERC20 tokens are easy to issue and are infinitely customizable using Ethereum’s smart contracting language. However, recent events have highlighted and exacerbated some weaknesses of the network, including slow transaction processing times for the network during ICOs and increasingly expensive gas prices (by fiat standards) for transactions and smart contract execution. Moreover, many organizations require only basic tokens; they adopt the risk of Ethereum’s Turing complete programming language without taking advantage of many of its benefits."
"While Ethereum has the most expressive programming capabilities, we believe Stellar is the best choice for ICOs that do not require complex smart contracts. Stellar’s primary goal is to facilitate issuing and trading tokens, especially those tied to legal commitments by known organizations, such as claims on real-world assets or fiat currency."
Stellar vs. Ethereum #2: The median transaction time on Stellar is 5 seconds, compared to approximately 3.5 minutes on Ethereum (source). Stellar has a negligible transaction fee (.00001 XLM ~= $0.0000002) with no gas fee for computation, while depending on the complexity of the computation, the median cost for a transfer on the Ethereum network is $0.094. Security: While both Stellar and Ethereum run on a decentralized network, the Stellar network has fewer security pitfalls. Stellar uses atomic transactions comprised of simple, declarative operations while Ethereum uses turing complete programming capabilities which produces less auditable code and greater risk of exploitable vulnerabilities (source). Recently, a security flaw in the Ethereum network froze millions of dollars. According to Mobius ariticle written by David Gobaud, "On November 6, 2017, Github user deveps199 'accidentally' triggered a bug in Parity, a popular Ethereum mult-sig wallet, that froze more than $152 million in Ether across 151 addresses. The bug impacted several token sales including Polkadot, which has had ~$98 million out of its recent $145 million sale frozen."
"Mobius had none of its ongoing pre-sale Ether frozen because we do not trust Ethereum’s Smart Contract based multi-sig wallets given the vast Turing complete attack surface and did not use one. Security broadly is one of the main reasons the MOBI token that powers the DApp Store is a Stellar Protocol token and not an Ethereum token."
Lumens vs. Ripple: According to Wall Street Bitcoin Exchange, "Many investors like to compare the company [Stellar] to Ripple, and there are a lot of similarities, being that some of the founders worked on the Ripple team. In what can now be looked at as another blockchain development drama that plays out on chat boards and in interviews all across the globe. Stellar declared they fixed Ripple’s problems with their hard fork, however, Ripple has failed to admit to any of the flaws in its design that the Stellar team has pointed out." The article concludes by saying, "We Choose XLM Over XRP For 2018. That is why we are going with Stellar Lumens over Ripple in our portfolio for the rest of 2017 and 2018. After holding Ripple for a long time this year, it just never seems to make the big break like other names with bigger market caps like Bitcoin Cash, Dash, and Litecoin have. While we are holding on most all our larger market caps, we feel that Stellar Lumens will be one of the break out coins for 2018."
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Conclusion
The stellar.org team is doing an amazing job making partnerships and pioneering the use of blockchain technology for various types of transactions. What we are seeing is a new technology that can actually be used to solve real-world problems. As a community, we need to continue supporting Stellar and we will quickly see it power transactions across the world. What are your thoughts about Stellar? What do you see in the future of Stellar? Any important news you want to share? Comment below.
submitted by chargingerman to Stellar [link] [comments]

Bitcoin - Proof of work - YouTube How To Convert Your Bitcoin To Cash If You're In Jamaica ... Hashcash Adam Back's Hashcash Readthrough Part 1 HashCash: The Original Bitcoin (LIVE)

News; Crypto; Hauptmenü . Crypto. Was ist Hashcash? 2020 - Bitcoin on air ... Bitcoin verwendet den Hashcash-Proof of Work Funktion als der Bitcoin-Mining-Core. Alle Bitcoin-Miners, egal ob CPU, GPU, FPGA oder ASICs, arbeiten an der Erstellung von Hashcash-Proofs, die als Votum in der Blockchain-Evolution dienen und das Blockchain-Transaktionslog validieren. Wie viele kryptografische ... The integration between HashCash Consultants and Global Media Company has been designed to cater to all the problems related to fake news circulation using the excellence of blockchain technology. The media firm will record and authenticate the news feeds, visuals, and photographs of the HC Net blockchain ecosystem. With a view to being assured ... News.Bitcoin.com reported on September 1, on how there’s a high chance the BCH blockchain will bifurcate into two networks. At that time, our newsdesk detailed how prominent members of the BCH ... Bitcoin News Good and bad News about Bitcoin Menu Skip to content. Home; Bitcoin Ankauf-Verkauf = Buying-Selling; Bitcoin.name for Sale! Contact us; We hire talents ; Category Archives: Hashcash. Auto Added by WPeMatico. Nigerian Banks, US Tech Firm Tackle Financial Exclusion with Blockchain. Leave a reply. National Nigerian banks have teamed up with US-based software development company ... Decentralization: hashcash-Scrypt vs hashcash-SHA256; Bitcoin uses the hashcash Proof of Work function as the Bitcoin mining core. All bitcoin miners whether CPU, GPU, FPGA or ASICs are expending their effort creating hashcash proofs-of-work which act as a vote in the blockchain evolution and validate the blockchain transaction log.

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Bitcoin - Proof of work - YouTube

♨️ How To Convert Your Bitcoin To Cash If You're In Jamaica🎯 My Bitconnect Loan And signup bonus! https://www.bitcoinswealthclub.com/landing/bitconnect/?user... Source Code for HashCash Generator: https://pastebin.com/n3AshSkh SHA256 Hash Online: http://passwordsgenerator.net/sha256-hash-generator/ More Links: Snapch... BREAKING! JAPAN & USA COLLABORATION to BEAT China's E-Yuan! Ethereum to 10k minimum + SEC Securities - Duration: 29:09. Digital Asset News 29,183 views #Bitcoin #Crypto #Invest #News #Litecoin #Cardano #Ethereum #DigiByte #Litecoin #Invest #Binance #Elastos #PundiX #Tron #IOTA #Ripple #XRP #Starbucks #StellarLumens #Google #Vechain #Bakkt # ... An explanation of cryptographic proof-of-work protocols, which are used in various cryptographic applications and in bitcoin mining. More free lessons at: ht...

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