List of bitcoin forks
Bitcoin forks are defined variantly as changes in the protocol or as the situations that occur "when two or more blocks have the same block height". A fork influences the validity of the network rules. Forks are typically conducted in order to add new features to a blockchain, to reverse the effects of hacking or catastrophic bugs. Forks require consensus to be resolved or else a permanent split emerges.
Forks of the client software
All four software clients attempt to increase transaction capacity of the network. The majority hash power did not begin to use these clients. Therefore there was no consensus to change the rules.
Hard forks splitting the cryptocurrency
Hard forks splitting bitcoin are created via changes of the blockchain rules, sharing a transaction history with bitcoin up to a certain time and date. The first hard fork splitting bitcoin happened on 1 August 2017, resulting in the creation of Bitcoin Cash. A list of hard forks splitting bitcoin by date and/or block follows:
- Bitcoin Cash: Forked at block 478558, 1 August 2017, for each bitcoin (BTC), an owner got 1 Bitcoin Cash (BCH)
- Bitcoin Gold: Forked at block 491407, 24 October 2017, for each BTC, an owner got 1 Bitcoin Gold (BTG)
- Bitcoin Private: Forked at block 511346, 28 February 2018, for each Bitcoin (BTC) or ZClassic (ZCL), an owner got 1 Bitcoin Private (BTCP).
Proposed (but canceled) forks
- SegWit2x: This was a planned fork which was later canceled before the split could take place.
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