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Bitcoin Classic
Bitcoin forks are defined variantly as changes in the protocol of the bitcoin network or as the situations that occur "when two or more blocks have the same block height". A fork influences the validity of the Communication protocol, rules. Forks are typically conducted in order to add new software feature, features to a blockchain, to reverse the effects of computer hacking, hacking or catastrophic software bug, bugs. Forks require consensus to be resolved or else a permanent split emerges. Forks of the client software The following are software fork, forks of the software client for the bitcoin network: ; Bitcoin XT: A fork initiated by Mike Hearn. The current reference implementation for bitcoin contains a computational bottleneck (production), bottleneck. The actual fork was preceded by Mike Hearn publishing a ''Bitcoin Improvement Proposal'' (BIP 64) on June 10, 2014, calling for the addition of "a small P2P protocol extension that performs UTXO lookups given a set of outpoi ...
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Bitcoin
Bitcoin (abbreviation: BTC; Currency symbol, sign: ₿) is the first Decentralized application, decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown entity published a white paper under the pseudonym of Satoshi Nakamoto. Use of bitcoin as a currency began in 2009, with the release of its open-source software, open-source implementation. In 2021, Bitcoin in El Salvador, El Salvador adopted it as legal tender. It is mostly seen as an investment and has been described by some scholars as an economic bubble. As bitcoin is pseudonymous, Cryptocurrency and crime, its use by criminals has attracted the attention of regulators, leading to Legality of cryptocurrency by country or territory, its ban by several countries . Bitcoin works through the collaboration of computers, each of which acts as a Node (networking), node in the peer-to-peer bitcoin network. Each node maintains an independent copy of a public distributed ledger of ...
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Adam Back
Adam Back (born July 1970) is a British cryptographer and cypherpunk. He is the CEO of Blockstream, which he co-founded in 2014. He invented Hashcash, which is used in the bitcoin mining process. Life Back was born in London, England, in July 1970. His first computer was a ZX81, Sinclair ZX81. He taught himself BASIC, Basic, and spent his time reverse engineering video games, finding decryption keys in Software suite, software packages. He completed his A-Levels, A levels in advanced mathematics, physics, and economics. He has a computer science Doctor of Philosophy, PhD in distributed systems from the University of Exeter. During his PhD, Back worked with compilers to make use of parallel computers in a semi automated way. He became interested in Pretty Good Privacy, PGP encryption, Electronic cash system, electronic cash and Anonymous remailer, remailers. He spent two thirds of his time working with encryption. After graduation, Back spent his career as a consultant in Start ...
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Bitcoin Clients
Bitcoin (abbreviation: BTC; Currency symbol, sign: ₿) is the first Decentralized application, decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown entity published a white paper under the pseudonym of Satoshi Nakamoto. Use of bitcoin as a currency began in 2009, with the release of its open-source software, open-source implementation. In 2021, Bitcoin in El Salvador, El Salvador adopted it as legal tender. It is mostly seen as an investment and has been described by some scholars as an economic bubble. As bitcoin is pseudonymous, Cryptocurrency and crime, its use by criminals has attracted the attention of regulators, leading to Legality of cryptocurrency by country or territory, its ban by several countries . Bitcoin works through the collaboration of computers, each of which acts as a Node (networking), node in the peer-to-peer bitcoin network. Each node maintains an independent copy of a public distributed ledger of ...
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Lightning Network
The Lightning Network (LN) is a payment protocol built on the bitcoin blockchain. It is intended to enable fast transactions among participating nodes (independently run members of the network) and has been proposed as a solution to the bitcoin scalability problem. History Joseph Poon and Thaddeus Dryja published a Lightning Network white paper in February 2015. Lightning Labs launched the Lightning Network in 2018 with the goal of reducing the cost and time required for cryptocurrency transaction. Specifically, the bitcoin blockchain can only process around 7 transactions per second (compared to Visa Inc., which can process around 24,000 transactions per second). Despite initial enthusiasm for the Lightning Network, reports on social media of failed transactions, security vulnerabilities, and over-complication lead to a decline in interest. On January 19, 2019, pseudonymous Twitter user hodlonaut began a game-like promotional test of the Lightning Network by sending 100,000 Bitco ...
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Smart Contract
A smart contract is a computer program or a Transaction Protocol Data Unit, transaction protocol that is intended to automatically execute, control or document events and actions according to the terms of a contract or an agreement. The objectives of smart contracts are the reduction of need for trusted intermediators, arbitration costs, and fraud losses, as well as the reduction of malicious and accidental exceptions. Smart contracts are commonly associated with cryptocurrency , cryptocurrencies, and the smart contracts introduced by Ethereum are generally considered a fundamental building block for decentralized finance (DeFi) and non-fungible token (NFT) applications. The original Ethereum white paper by Vitalik Buterin in 2014 describes the Bitcoin protocol as a weak version of the smart contract concept as originally defined by Nick Szabo, and proposed a stronger version based on the Solidity language, which is Turing complete. Since then, various cryptocurrencies have suppo ...
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Schnorr Signature
In cryptography, a Schnorr signature is a digital signature produced by the Schnorr signature algorithm that was invented by Claus Schnorr. It is a digital signature scheme known for its simplicity, among the first whose security is based on the intractability of certain discrete logarithm problems. It is efficient and generates short signatures. It was covered by which expired in February 2010. Algorithm Choosing parameters *All users of the signature scheme agree on a group G of prime order q with generator g in which the discrete log problem is assumed to be hard. Typically a Schnorr group is used. *All users agree on a cryptographic hash function H: \^* \rightarrow \mathbb Z/q\mathbb Z. Notation In the following, *Exponentiation stands for repeated application of the group operation *Juxtaposition stands for multiplication on the set of congruence classes or application of the group operation (as applicable) *Subtraction stands for subtraction on the set of congruence c ...
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Bitcoin Gold
Bitcoin Gold (BTG) is a cryptocurrency which was created as a hard fork of bitcoin. The stated purpose of the hard fork is to make mining on commonly available graphics cards economically viable. The cryptocurrency has been hit by two 51% hashing attacks, once in 2018 and once in 2020. History Bitcoin Gold hard forked from the bitcoin blockchain on October 24, 2017. The stated purpose of the hard fork was to change the proof of work algorithm so that ASICs ( Application-Specific Integrated Circuits) which are used to mine bitcoin cannot be used to mine the Bitcoin Gold blockchain in the hopes that enabling mining on commonly available graphics cards would allow mining from a home PC. According to Mashable Mashable is a Online newspaper, news website, digital media platform and entertainment company founded by Pete Cashmore in 2005. History Mashable was founded by Pete Cashmore while living in Aberdeen, Scotland, in July 2004. Early iterations o ... the launch was cri ...
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Bitcoin Satoshi Vision
Bitcoin Satoshi Vision (BSV) is a cryptocurrency that is a hard fork of Bitcoin Cash. Bitcoin Satoshi Vision was created in November 2018 by a group of individuals led by Craig Steven Wright, who has claimed since 2015 to be Satoshi Nakamoto, the creator of the original bitcoin. History 2018 split from Bitcoin Cash On 15 November 2018, a hard fork chain split of Bitcoin Cash occurred between two rival factions called Bitcoin Cash and Bitcoin SV. On 15 November 2018 Bitcoin Cash traded at about $289, and Bitcoin SV traded at about $96.50, down from $425.01 on 14 November for the un-split Bitcoin Cash. The split originated from what was described as a "civil war" in two competing Bitcoin Cash camps. The first camp, supported by entrepreneur Roger Ver and Jihan Wu of Bitmain, promoted the software entitled Bitcoin ABC (short for Adjustable Blocksize Cap), which would maintain the block size at 32  MB. The second camp led by Craig Steven Wright and billionaire Calvin Ayre pu ...
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Bitcoin
Bitcoin (abbreviation: BTC; Currency symbol, sign: ₿) is the first Decentralized application, decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown entity published a white paper under the pseudonym of Satoshi Nakamoto. Use of bitcoin as a currency began in 2009, with the release of its open-source software, open-source implementation. In 2021, Bitcoin in El Salvador, El Salvador adopted it as legal tender. It is mostly seen as an investment and has been described by some scholars as an economic bubble. As bitcoin is pseudonymous, Cryptocurrency and crime, its use by criminals has attracted the attention of regulators, leading to Legality of cryptocurrency by country or territory, its ban by several countries . Bitcoin works through the collaboration of computers, each of which acts as a Node (networking), node in the peer-to-peer bitcoin network. Each node maintains an independent copy of a public distributed ledger of ...
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Bitcoin Unlimited
Bitcoin Unlimited (BU) is a full node implementation for Bitcoin Cash networks. The Bitcoin Core client, from which Bitcoin Unlimited is forked, has a hard coded one megabyte block limit; Bitcoin Unlimited differs by allowing users to signal which block size limit they prefer, find the limit having a majority consensus and automatically track the largest proof-of-work, regardless of block size. However, if a block greater than one megabyte in size is accepted by Bitcoin Unlimited and rejected by nodes with a block size limit, a fork of the network will occur, resulting in two separate blockchains with Bitcoin Unlimited nodes following the chain with the largest proof-of-work. The release of Bitcoin Unlimited follows the release of Bitcoin XT and Bitcoin Classic, alternative proposals which aimed to increase bitcoin's transaction capacity of around 2.5-3 transactions per second by increasing the hard-coded block size limit. As of version 1.1.0.0, Bitcoin Unlimited releases ar ...
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