Category: Forks

A 2018 plan for a five-way multi-fork of BTC, BCH, ETH, LTC and Dash, paying holders by the USD value of their coins; no fork block was set.

A January 2018 Bitcoin fork announcement with no block or date in any source; forkdrop lists a 10:1 ratio.

A 2018 airdrop listing with no known fork block; its GitHub repository is gone and its domain was parked in March 2018.

The original chain. Every UTXO fork in this wiki shares its history up to a split block.

The first fork of Bitcoin's code to run its own network: a naming system for the .bit domain that pioneered merged mining.

Ixcoin (August 2011), a premined Bitcoin code fork with double the block reward, and I0coin, its no-premine copy a week later.

An August 2011 Bitcoin code fork by CoinHunter (RealSolid) with 3-minute blocks and fixed fees, whose incompatible 2.0 chain and hostile posts made it a byword of the early altcoin era.

The first scrypt coin (Tenebrix, September 2011, heavily premined) and its low-premine relaunch by Charlie Lee (Fairbrix, October 2011), days before Litecoin.

Charlie Lee's 2011 code fork of Bitcoin: “silver to Bitcoin's gold”, Scrypt proof of work, 2.5-minute blocks, MWEB privacy since 2022.

The first cryptocurrency to use proof of stake, launched in August 2012 on a Bitcoin-based codebase.

An April 2013 Litecoin-based coin with 60-second blocks and a 336 million supply, later moved to NeoScrypt.

A 2013 Scrypt coin from Litecoin's code with random “super blocks”; Dogecoin's client began as a fork of it.

The 2013 joke coin by Billy Markus and Jackson Palmer, a Scrypt code fork in the Litecoin line, merge-mined via AuxPoW.

A 2014 code fork of Bitcoin built to resist ASIC mining, with 2.5-minute blocks, 84 million coins and a history of 51% attacks.

A multi-algorithm UTXO chain launched in January 2014 with 15-second blocks, five mining algorithms and a 21 billion coin cap.

Evan Duffield's 2014 code fork of Bitcoin, launched as XCoin, renamed Darkcoin, then Dash; masternodes, X11 and an on-chain treasury.

A March 2014 code fork of Bitcoin 0.8.6 that swapped SHA-256 for Grøstl and still tracks Bitcoin Core releases.

A 2014 proof-of-stake coin that gave about 4.6 CLAM to every Bitcoin, Litecoin and Dogecoin address with a balance, to be “dug” with the old private keys.

A fork of the Qeditas formal-mathematics project, carrying its Bitcoin block-350,000 airdrop, and anchoring its blocks into Litecoin by proof of burn.

A 2015 Bitcoin spin-off by Bill White for a library of formalized mathematics, with its distribution taken from a snapshot up to Bitcoin block 350,000.

Mike Hearn's fork of Bitcoin Core that shipped BIP-101 in August 2015 and opened the public, client-versus-client phase of the block size war.

A full-node client that let users and miners choose their own block size limit, governed by a voting federation; later a Bitcoin Cash implementation.

The early-2016 client that proposed a one-time 2 MB hard fork (BIP-109) after Bitcoin XT stalled.

Luke Dashjr's derivative of Bitcoin Core: the long-running alternative client that became the base of the 2025–26 anti-spam movement and of the BIP-110 split.

Not a Bitcoin fork: the original Ethereum chain that kept running when the Ethereum Foundation's July 2016 hard fork reversed the DAO theft, included here as a comparison case for “code is law”.

A DAG ledger announced in September 2016 with no mining, which promised 98% of its coins to Bitcoin holders who linked their addresses; now called Obyte.

The first coin to implement the Zerocoin protocol, launched as Zcoin in September 2016 and renamed Firo in October 2020; its team says it is not a Zcash fork.

The 2016 shielded-payments chain built on the Zerocash research — “the privacy upgrade Bitcoin never accepted”.

A November 2016 fork of the Zcash code that removed the 20% founders' reward and the slow start, later the Zcash-side parent of Bitcoin Private.

A December 2016 coin with 8MB blocks on pre-SegWit Bitcoin code, announced by goku1997 after a rejected pull request.

A new-genesis coin launched in April 2017 that let Bitcoin holders claim BTX against two Bitcoin snapshots, so it is often listed as a Bitcoin fork although it does not share Bitcoin's history.

Amaury Séchet's “Adjustable Blocksize Cap” client, which launched Bitcoin Cash in August 2017 and became eCash's node after the 2020 split.

The big-block fork of 1 August 2017, Bitcoin's first durable chain split.

A 2017 BFT smart-contract platform that forkdrop lists as a registration airdrop keyed to Bitcoin block 480,000.

A late-2017 project listed by forkdrop at block 491,407 whose archived site sold tokens and reused Bitcoin Cash copy.

The October 2017 fork that switched to GPU-mined Equihash, and later suffered repeated 51% attacks.

An October 2017 fork announcement for an Equihash chain with 30-second blocks, whose text was copied from Bitcoin Gold's and which a 2019 review found no longer existed.

An October 2017 fork announcement with Equihash, one-minute blocks and a 450-day halving, pitched as having no premine unlike Gold, Silver or Platinum.

The planned 2 MB hard fork that was meant to follow SegWit under the New York Agreement, suspended a week before its block height.

A fork that copied Bitcoin up to block 491,406 (24 Oct 2017) but only started its own chain on 12 November 2017, with Equihash and replay protection.

A minority chain that kept Bitcoin Cash's original rules when BCH changed its difficulty algorithm in November 2017.

A November 2017 airdrop fork that paid 10 BCD per BTC, changed proof of work and set aside 40 million coins for a rewards pool.

A December 2017 Equihash fork; Cointelegraph reported a Korean-language post calling it a scam, which the team later disowned, and the episode caused an uproar in South Korea.

A snapshot fork keyed to block 498,754 that filtered early coinbase coins and two famous addresses out of its copy of the Bitcoin ledger.

A fork listed by forkdrop at block 498,754 with 28 million coins; no other source was found.

A registration airdrop listing at block 498,888 with a 100:1 ratio and 3 billion supply; no chain, code or announcement was found.

A Chinese-language December 2017 project (比特币荣耀) planning snapshots at block 498,960 and on 1 January 2018, AuxPoW mining and user voting; no source code was found.

A December 2017 chain split at block 498,848 with a new proof of work, later listed with a 1:100 ratio and no published source code, and shelved by a claiming service in 2018.

A December 2017 Bitcoin fork that split at the same height as Super Bitcoin, credited 10,000 BCX per BTC, and reserved a premine in a 4-of-6 multisig address.

A December 2017 proof-of-stake fork at block 498,888 with replay protection and O/A address prefixes; not to be confused with the 2019 Bitcoin Oil (OIL) press-release project.

A December 2017 fork marketed with smart contracts and 8 MB blocks, listed by a long roster of exchanges at launch.

A December 2017 fork with 8 MB blocks and smart contracts, linked in the press to Jeff Garzik, that distributed coins only to addresses that had moved recently and was declared discontinued in early 2019.

A December 2017 fork at block 499,345 whose first balances were snapshotted by two exchanges; no source code was found.

A December 2017 fork at block 499,777 at 1 BTC = 10,000 BTW; by February 2019 the reviewer found no nodes.

A fork listed at block 500,000 by a Canadian Blockchain Community and listed on the Allcoin exchange in January 2018; the sources disagree on its supply.

A fork at block 500,000 with 8 MB blocks and a 1% reserve; a 2019 review found it still running even though its GitHub repository had disappeared.

A fork at block 499,999 that planned a later switch to a PoW+DPoS hybrid; its 2018 comparison chart claimed 21.21 million coins.

A Chinese-language proof-of-stake fork at block 499,999 at 1 BTC = 100 BTCS, with 21 million of 2.121 billion coins premined for a foundation.

A DPoS airdrop of 42 million BCW split between BTC holders (1:1), BDS holders and Ti-value holders, keyed to block 500,000.

A December 2017 fork at block 499,999 that replaced proof of work with delegated proof of stake, unrelated to the Lightning Network despite the name.

A claim-based token for BTC and ETH holders, snapshotted at Bitcoin block 500,283 and Ethereum block 4,766,319, at 3.93946357 BITE per BTC.

A Christmas 2017 fork at block 501,000 with a new proof-of-work and a 2.1 billion supply; different from New Bitcoin (NBTC).

A 1:1 fork announced for block 501,000 with 21 million coins, the same height as Bitcoin New.

A December 2017 fork at block 501,118 with 17 million coins for Bitcoin holders and 4 million for a community pool; still syncing in February 2019.

A fork at block 501,225 at 1 BTC = 1,000 BIFI; the only source this wiki has is the 2019 fork list.

Chandler Guo's “Christmas” fork of Bitcoin: announced for 25 December 2017 at block 501,225, it actually split on 27 December and switched to proof of stake after two super blocks.

A December 2017 fork announced for block 501,300 with 21 million coins and a 0.1 million premine; forkdrop gives block 512,480.

A fork at block 501,225 that replaced UTXOs with an account model and DPoS; the 2019 reviewer noted its code was not based on Bitcoin Core.

A Chinese snapshot fork at block 501,225 with 42 million coins, 8 MB blocks and Equihash; its site claimed replay protection, and a May 2018 tool post warned that one of three newly listed forks lacked it.

A fork claimed at block 501,368 on 28 December 2017 with a 210,000-coin premine and a long feature list; this wiki found no source code.

A November 2017 fork announcement that would invalidate every coin from block 120,001 or earlier, forking at block 501,488.

A snapshot fork of Bitcoin at block 501,888 at 1 BTC = 1,000 BTN, with Equihash, 8 MB blocks and planned EVM side chains; a 2019 review called it abandoned.

A fork listed by forkdrop at block 501,888 with no ratio, supply or links; no other source was found.

A proof-of-capacity fork whose first coins were issued at block 501,949 only to users of four exchanges, while its team weighed basing it on United Bitcoin instead.

A fork at block 501,888 at the end of 2017, announced with a 1:1 airdrop and a planned later swap to a DAG chain at one to one billion.

A planned early-2018 fork that promised Dash-style instant transactions and masternodes; its fork height differs between its own site and the 2019 fork list.

A fork at block 502,233 promising huge blocks, Lua smart contracts and voting, at 100 BCB per BTC by forkdrop's data.

A January 2018 proof-of-stake masternode coin named Bitcoin Lightning, swapped in late 2018 for the Block-Logic BLTG coin.

A January 2018 listing at block 502,999 with a 1000:1 ratio and a 21 billion supply, known only from forkdrop's data and a Facebook link.

A Chinese-team fork (比特币金典) moving to 8MB blocks at a height its own site gives as 499,888; forkdrop gives 498,888.

A January 2018 fork at block 503,888 at 1 BTC = 100 WBTC, with 21 million of its 2.121 billion coins held by a foundation.

An airdrop fork of Bitcoin Cash: split at BCH block 512,666 in January 2018 with 1,000 CDY per BCH, Equihash mining, 2-minute blocks and a 21 billion supply.

A fork at block 505,050 that promised 100 BCS and 100 test tokens per BTC and a built-in token exchange; no source code was found.

A January 2018 fork at block 505,050 that switched to the CryptoNight proof of work, pitched as Satoshi's one-CPU-one-vote.

A January 2018 Equihash fork that added one coin per block to an “interest pool” for holders who parked their coins.

A January 2018 SegWit-enabled fork built around on-chain atomic swaps and hybrid proof of stake.

A January 2018 fork at block 506,066 from a Chinese blockchain-education group whose README copies Bitcoin World's template.

A fork announced for 30 January 2018 whose archived site showed only a countdown and “Coming soon...”; the 2019 list marked it abandoned.

A CryptoNight two-token project (BCP and BCPC) claimable by BTC holders at block 507,000, with a claim rate that shrank over time.

A SHA-256 PoW + PoS coin that gave Bitcoin holders a free distribution as of block 506,984, at 1:10 by its README.

A Komodo asset chain launched in 2018 that imported UTXO balances from HUSH, SUPERNET, DEX and BTC and described itself as a merged airdrop, not a fork.

A proof-of-stake snapshot fork of Bitcoin balances at block 507,850, with masternodes and Zerocoin-based zBTC2 privacy; a 2019 review found it running.

A CryptoNight fork announced for block 507,777 with 21 million forked coins plus a 2.1 million coin presale.

A February 2018 fork listed at block 508,888 and 1 BTC = 10 BBC, for which no source code was found.

A 2018 Equihash fork of Bitcoin, not of Bitcoin Cash despite its name, whose README and a third-party list give different fork heights; it stopped producing blocks in 2018.

A February 2018 fork at block 510,048 with a difficulty reset, replay protection and SegWit; forkdrop still had it as live in 2019.

A fork announced in December 2017 for 21 February 2018, promising anonymity and instant confirmations.

A 1:1 claim project for everyone holding Bitcoin on 28 February 2018, with 45 days to claim; no fork block is known.

A 2018 “fork-merge” that combined a Bitcoin UTXO snapshot with Zclassic's chain, then went offline in October 2020.

A 2018 fork listing whose archived site only promised a website and white paper for the vernal equinox of 2018.

A 1:1 fork announced for block 515,000 by a bounty poster who said he was not its developer.

A self-described pure-speculation SHA-256 fork listed at block 515,350, with strong replay protection and 21 million coins.

A fork listed by forkdrop for 1 April 2018 with no block or supply; its only announcement link is an image on an events site.

An Equihash fork at block 516,095 on 1 April 2018, tied to a BitClassic marketplace; still working in 2019 and releasing a v2 with liquidity mining later.

An April 2018 fork at block 518,800 that promised mining only with renewable energy through a peer-reviewed “proof-of-greenness”.

An April 2018 fork at block 520,000 that pitched DPoS, 3,000 TPS and atomic swaps with EOS; no source code was found.

An April 2018 fork of Bitcoin Cash at BCH height 528,000 with two-minute Equihash blocks and an anti-quantum research plan.

An April 2018 fork at block 520,419 by a company called Z-Magnetars, with 10MB blocks, GPU mining and a 5 million premine.

An April 2018 announcement of a 1:1 Bitcoin hard fork with an online wallet; forkdrop has no fork block for it.

An airdrop listed by forkdrop at block 523,118 with 143 million coins; its site later showed only a coming-soon page.

A May 2018 upgrade of Bitcoin Clashic branded Bitcoin Core (BTCC), later renamed Title Network; unrelated to the Bitcoin Core software project.

An EOS alt-chain project whose ERC-20 XNN tokens went to Ethereum addresses in October 2017, with a BTC-holder airdrop announced later.

A 2018 registration-airdrop listing whose archived site still carried placeholder text; forkdrop files it as reneged.

A 2018 hard fork at a 1 BTC = 10,000 MBC ratio that changed proof of work three times and in 2019 restarted on a new network, burning coins that had not moved.

A 2018 masternode coin with an ERC-20 pre-airdrop, converting 1:1 at mainnet launch at Bitcoin block 531,650, with 1 BTD per BTC.

A 2018 smart fork for retail merchants: a clean chain seeded with a 20 August 2018 UTXO snapshot, with claims open to non-US holders until the end of 2018.

A 2018 Zerocoin privacy coin airdropped to Bitcoin and Hexx holders from a snapshot; its 2024 client is based on Firo.

A 2018 Zerocash-protocol coin bootstrapped from a merge of the Bitcoin and Zclassic UTXO sets, 1:1 for BTC and 2:1 for ZCL, with masternodes.

A C# proof-of-work coin with a 2.1 million cap that called itself Bitcoin Rhodium, said plainly it was not a Bitcoin fork, and renamed itself xRhodium in 2019.

A November 2018 fork of Bitcoin Cash by former BCH developers and community members, built around merge mining; still syncing in February 2019.

The nChain-backed split from Bitcoin Cash in the November 2018 “hash war”.

A Bitcoin + Peercoin merge airdrop with a Thanksgiving 2018 snapshot, hybrid PoS/PoW and a carbon-credit-backed stablecoin side-chain plan.

A December 2018 fork announced at block 555,000 that replaced ECDSA with XMSS hash-based signatures and required holders to move coins with their old keys.

A January 2019 Zerocoin privacy coin built from snapshots of Bitcoin Cash, Bitcoin SV, GravityCoin and BitcoinZero, pitched in the wake of the hash war.

A February 2019 Business Wire announcement of a planned proof-of-stake Bitcoin fork; no fork block was ever set in the sources found.

A 2019 Ethereum ERC-20 staking token airdropped by signed claim to BTC, BCH, BSV, ETH and LTC holders, with a snapshot on 31 May 2019.

A merge-minable SHA-256 coin with masternodes, ZDAG fast payments and an EVM-compatible NEVM layer.

A MimbleWimble coin launched in November 2019 with a 20 million cap, whose airdrop to registered Bitcoin holders closed on 2 January 2020.

Richard Heart's ERC-20 token, offered from December 2019 with airdrops to large Bitcoin holders; the SEC sued in 2023 and the court dismissed the case in 2025.

The Bitcoin Cash full-node client that took over from Bitcoin ABC when ABC's funding rule split off in November 2020.

Amaury Séchet's Bitcoin ABC chain, split from Bitcoin Cash in November 2020 over a developer fund; renamed eCash in 2021. Not to be confused with Paul Sztorc's eCash (ECX).

The 2026 fork that grew out of Luke Dashjr's BIP-110 anti-spam soft fork and replaced SHA-256d with BLAKE2b. Sold as XBT on some venues.

Paul Sztorc's 2026 hard fork of Bitcoin that activates drivechains (BIP-300/301) natively. Not XEC.