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What a bitcoin fork actually is
What a bitcoin fork actually is
Published: 2017/11/02
Channel: Money Insider
What is a Bitcoin hard fork? Simply Explained!
What is a Bitcoin hard fork? Simply Explained!
Published: 2017/12/04
Channel: Simply Explained - Savjee
How Bitcoin and Ethereum get updated | Programmer explains soft and hard forks
How Bitcoin and Ethereum get updated | Programmer explains soft and hard forks
Published: 2017/05/08
Channel: Ivan on Tech
Bitcoin Q&A: What happens to our bitcoins during a hard fork?
Bitcoin Q&A: What happens to our bitcoins during a hard fork?
Published: 2017/05/23
Channel: aantonop
Bitcoin, Blockchain Forks & Lightning - Computerphile
Bitcoin, Blockchain Forks & Lightning - Computerphile
Published: 2017/11/17
Channel: Computerphile
What’s The Difference Between A Hard Fork & A Soft Fork?
What’s The Difference Between A Hard Fork & A Soft Fork?
Published: 2017/05/11
Channel: B21 Block: Cryptocurrency & Blockchain Tutorials
Cos
Cos'è il Fork di Bitcoin ? (1/2)
Published: 2017/07/21
Channel: BlockChain Caffè
Forkology: A Study of Forks for Newbies
Forkology: A Study of Forks for Newbies
Published: 2017/06/24
Channel: aantonop
Electroneum Blockchain Update -
Electroneum Blockchain Update - 'Understanding the fork'
Published: 2018/06/29
Channel: Electroneum
Bitcoin Origin - The Fork Review | World
Bitcoin Origin - The Fork Review | World's first Multi-Fork meets serverless Blockchain
Published: 2018/06/07
Channel: The Crypto Crew
The Difference Between a Blockchain Fork and Code Fork
The Difference Between a Blockchain Fork and Code Fork
Published: 2018/06/12
Channel: Loki Network
Kin TO THE MOON?! With Fork XLM Stellar Blockchain To Create TWO Chain System With Ethereum ETH
Kin TO THE MOON?! With Fork XLM Stellar Blockchain To Create TWO Chain System With Ethereum ETH
Published: 2018/05/15
Channel: Altcoin Buzz Ladies
BITCOIN ORIGIN Review- World
BITCOIN ORIGIN Review- World's first Multi-Fork meets serverless Blockchain
Published: 2018/07/01
Channel: KielasBelieberBoy
BITCOIN ORIGIN Review- World
BITCOIN ORIGIN Review- World's first Multi-Fork meets serverless Blockchain
Published: 2018/07/01
Channel: KielasBelieberBoy
What the Fork?! (Blockchain Forks; Bitcoin v. Bitcoin Cash]
What the Fork?! (Blockchain Forks; Bitcoin v. Bitcoin Cash]
Published: 2018/01/30
Channel: Talk Blockchain to Me
Soft Fork vs Hard Fork [Blockchain & Cryptocurrency (Bitcoin, Ethereum)]
Soft Fork vs Hard Fork [Blockchain & Cryptocurrency (Bitcoin, Ethereum)]
Published: 2018/05/18
Channel: Sonar Systems
Blockchain and Farm-to-fork Solutions for the Food Life Cycle
Blockchain and Farm-to-fork Solutions for the Food Life Cycle
Published: 2017/10/17
Channel: Local Producer
In a nutshell: What are blockchain, a cryptocurrency, consensus and a fork?
In a nutshell: What are blockchain, a cryptocurrency, consensus and a fork?
Published: 2018/01/18
Channel: TenX
NEXT: BLOCKCHAIN Official Trailer 3 [2018] Episode 2 "Fork"
NEXT: BLOCKCHAIN Official Trailer 3 [2018] Episode 2 "Fork"
Published: 2018/07/13
Channel: ox3production
Electroneum Blockchain Update vs Electronero Fork
Electroneum Blockchain Update vs Electronero Fork
Published: 2018/04/25
Channel: Crypto Explorer
ELECTRONEUM FORK DAY!!! IT HAPPENED. WE HAVE A CUSTOM BLOCKCHAIN BABY!
ELECTRONEUM FORK DAY!!! IT HAPPENED. WE HAVE A CUSTOM BLOCKCHAIN BABY!
Published: 2018/05/30
Channel: Crypto For The People
Cómo funciona bitcoin. Wallets, mineros, forks, blockchain. Explicación sencilla y completa español.
Cómo funciona bitcoin. Wallets, mineros, forks, blockchain. Explicación sencilla y completa español.
Published: 2017/11/20
Channel: Crypto Español
Hard & Soft Forking Explained (Litecoin/Bitcoin)
Hard & Soft Forking Explained (Litecoin/Bitcoin)
Published: 2016/08/23
Channel: Franklyn [Litecoin]
Bitcoin Blockchain Hard Fork on August 1st! Where should you store your bitcoin?
Bitcoin Blockchain Hard Fork on August 1st! Where should you store your bitcoin?
Published: 2017/07/31
Channel: MunkeySpaz
Bitcoin Blockchain Hard Fork Split on 1st August
Bitcoin Blockchain Hard Fork Split on 1st August
Published: 2017/07/29
Channel: EEVblog2
Electroneum Fork? - Richard Ells Explains Blockchain Updates Coming in May 2018 - Full Video Here
Electroneum Fork? - Richard Ells Explains Blockchain Updates Coming in May 2018 - Full Video Here
Published: 2018/04/27
Channel: CryptoHobby
KIN is gonna fork it’s new blockchain off of Stellar!
KIN is gonna fork it’s new blockchain off of Stellar!
Published: 2018/05/09
Channel: TripJammer
The KAPU Project - First Archaeological Blockchain - ARK Fork - Dpos
The KAPU Project - First Archaeological Blockchain - ARK Fork - Dpos
Published: 2017/10/01
Channel: Delegate Doom
Blockchain programming - how to fork a coin
Blockchain programming - how to fork a coin
Published: 2018/06/20
Channel: Sammy Bitcoin
Smart Contracts, Hard Forks, and Blockchain Immutability - With David Moskowitz
Smart Contracts, Hard Forks, and Blockchain Immutability - With David Moskowitz
Published: 2016/09/26
Channel: BTC Sessions
👀 Achain Blockchain - Watch Now Free Coins to be Had!
👀 Achain Blockchain - Watch Now Free Coins to be Had!
Published: 2018/01/12
Channel: Keith Wareing
Hard Fork - Episode 1: The Blockchain You Don
Hard Fork - Episode 1: The Blockchain You Don't Know (with Roger Ver)
Published: 2018/02/26
Channel: Hard Fork
SegWit vs BTU- How to Prepare for A Bitcoin Hardfork
SegWit vs BTU- How to Prepare for A Bitcoin Hardfork
Published: 2017/04/11
Channel: Crypto Tips
ZCash fork incoming, Facebook exploring blockchain and first lightning exchange
ZCash fork incoming, Facebook exploring blockchain and first lightning exchange
Published: 2018/05/09
Channel: DevilsBitcoins
Blockchain Know Your Coin (KYC) Series - ETC Hardfork how to get Callisto Airdrop
Blockchain Know Your Coin (KYC) Series - ETC Hardfork how to get Callisto Airdrop
Published: 2018/03/01
Channel: What is on Internet
BitCoinOrigin.io - World
BitCoinOrigin.io - World's first Multi-Fork meets serverless Blockchain!
Published: 2018/07/01
Channel: Crypto Alekso
Ethereum Forks But Blockchain Attacks Keep On Coming (The Cryptoverse #126)
Ethereum Forks But Blockchain Attacks Keep On Coming (The Cryptoverse #126)
Published: 2016/10/20
Channel: The Cryptoverse
3 Reasons Why You Should Invest In Bitcoin Cash In 2018
3 Reasons Why You Should Invest In Bitcoin Cash In 2018
Published: 2018/04/30
Channel: Crypto Traders Pro
Taller Fork, Blockchain & Bitcoin
Taller Fork, Blockchain & Bitcoin
Published: 2017/10/25
Channel: Córdoba Bitcoin
Episode - 4: What is Blockchain Hardfork?
Episode - 4: What is Blockchain Hardfork?
Published: 2017/11/30
Channel: Blockchain Council
Kin to Fork Stellar, Launch a Proprietary Blockchain
Kin to Fork Stellar, Launch a Proprietary Blockchain
Published: 2018/05/08
Channel: CoinKorea
SegWit2x Hard Fork, Blockchain And Music Crypto
SegWit2x Hard Fork, Blockchain And Music Crypto
Published: 2017/11/06
Channel: Dave Y
Will Bitcoin Fork? UASF Summary (Jimmy Song Interview)
Will Bitcoin Fork? UASF Summary (Jimmy Song Interview)
Published: 2017/06/15
Channel: Ameer Rosic
Bitcoin i Blockchain #1 - Włamanie na Bitfinex, fork ethereum i inteligentne miasta
Bitcoin i Blockchain #1 - Włamanie na Bitfinex, fork ethereum i inteligentne miasta
Published: 2016/09/01
Channel: CyfrowaEkonomia
Konsep Dasar Bitcoin: P2P, Blockchain, Konsensus, Fork
Konsep Dasar Bitcoin: P2P, Blockchain, Konsensus, Fork
Published: 2017/11/21
Channel: Anditto Heristyo
Achain $ACT | Interview | Blockchain As A Service Forking Network | Eric Wang | Crypto Coin
Achain $ACT | Interview | Blockchain As A Service Forking Network | Eric Wang | Crypto Coin
Published: 2018/03/24
Channel: Crypto Zombie
Blockchain Announces Service Plans Bitcoin Segwit2x Fork
Blockchain Announces Service Plans Bitcoin Segwit2x Fork
Published: 2017/11/04
Channel: CryptoLand
Bitcoin Hard Fork Segwit2x Nov 16th 2017 ការបំបែកBitcoin Blockchain (CAMBODIA)
Bitcoin Hard Fork Segwit2x Nov 16th 2017 ការបំបែកBitcoin Blockchain (CAMBODIA)
Published: 2017/11/12
Channel: Kimheng SOK
Get lightning bitcoin (LBTC) to your Blockchain wallet
Get lightning bitcoin (LBTC) to your Blockchain wallet
Published: 2018/04/03
Channel: bitcoin fork
Bitcoin Cash (BCH) Hard Fork und Preisfall? Blockchain ETF von Brian Kelly, Mt. Gox Alarm
Bitcoin Cash (BCH) Hard Fork und Preisfall? Blockchain ETF von Brian Kelly, Mt. Gox Alarm
Published: 2018/05/16
Channel: Blue Alpine Research DE
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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In cryptocurrencies, a fork is defined variously as

  • "what happens when a blockchain diverges into two potential paths forward"[1]
  • "a change in protocol"[2] or
  • a situation that "occurs when two or more blocks have the same block height"[3][a]

Forks are related to the fact that different parties need to use common rules to maintain the history of the blockchain.[1] Forks (in the sense of protocol changes) have been used in order to add new features to a blockchain, to reverse the effects of hacking or catastrophic bugs on a blockchain as was the case with the bitcoin fork on 6 August 2010[5] or the fork between Ethereum and Ethereum Classic. Notably, blockchain forks have been widely discussed in the context of the bitcoin scalability problem.

Types of forks[edit]

Forks are further classified as accidental or intentional. Accidental fork happens when two or more miners find a block at nearly the same time. The fork is resolved when subsequent block(s) are added and one of the chains becomes longer than the alternative(s). The network abandons the blocks that are not in the longest chain (they are called orphaned blocks).

Intentional forks that modify the rules of a blockchain can be classified as follows:[1]

Hard fork[edit]

A hard fork is a rule change such that the software validating according to the old rules will see the blocks produced according to the new rules as invalid. In case of a hard fork, all nodes meant to work in accordance with the new rules need to upgrade their software.[1]

If one group of nodes continues to use the old software while the other nodes use the new software, a split can occur. For example, Ethereum has hard-forked to "make whole" the investors in The DAO, which had been hacked by exploiting a vulnerability in its code.[6] In this case, the fork resulted in a split creating Ethereum and Ethereum Classic chains. In 2014 the Nxt community was asked to consider a hard fork that would have led to a rollback of the blockchain records to mitigate the effects of a theft of 50 million NXT from a major cryptocurrency exchange. The hard fork proposal was rejected, and some of the funds were recovered after negotiations and ransom payment.[7]

Alternatively, to prevent a permanent split, a majority of nodes using the new software may return to the old rules, as was the case of bitcoin split on 12 March 2013.[8]

Soft fork[edit]

In contrast to a hard fork, a soft fork is a change of rules that creates blocks recognized as valid by the old software, i.e. it is backwards-compatible.[1] As for a hard fork, a soft fork can also split the blockchain when non-upgraded software creates blocks not considered valid by the new rules.[1]

User activated[edit]

A user activated soft fork (UASF) is a contentious concept of enforcing a soft fork rule change without the majority support of miners.[1]

See also[edit]

Notes[edit]

  1. ^ Alternatively, this situation is called a blockchain split[4] or a blockchain divergence. If permanent, it is also referred to as a cryptocurrency split.

References[edit]

  1. ^ a b c d e f g Amy Castor (27 March 2017). "A Short Guide to Bitcoin Forks". CoinDesk. Retrieved 1 July 2017. 
  2. ^ Tarr, Andrew (July 19, 2017). "UASF vs. UAHF, Explained". CoinTelegraph. Retrieved 22 March 2018. 
  3. ^ Antonopoulos, Andreas (2017). Mastering Bitcoin: Programming the Open Blockchain (2 ed.). USA: O' Reilly media, inc. p. Glossary. ISBN 978-1491954386. 
  4. ^ Thieme, Nick (4 August 2017). "Bitcoin Has Split Into Two Cryptocurrencies. What, Exactly, Does That Mean?". Slate. Retrieved 8 March 2018. 
  5. ^ Sawyer, Matt (26 February 2013). "The Beginners Guide To Bitcoin – Everything You Need To Know". Monetarism. Archived from the original on 2014-04-09. 
  6. ^ Coppola, Frances (21 July 2016). "A Painful Lesson For The Ethereum Community". Forbes. 
  7. ^ Gillespie, Clay Michael (15 August 2014). "Official NXT Decision: No Blockchain Rollback". Cryptocoin News. Retrieved 13 November 2016. 
  8. ^ Lee, Timothy (12 March 2013). "Major glitch in Bitcoin network sparks sell-off; price temporarily falls 23%". Arstechnica. Archived from the original on 2013-04-22. 

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