Wiki / Forks / BitcoinX (BCX)

BitcoinX (BCX)BCX

From the Bitcoin Takeover Wiki · ✓ 6 sources · 0 podcast anchors · built 2026-11-13

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.

◆ Takeover vieweditorial · opinion, labelled

The wiki's angle: BitcoinX shows how cheaply a fork could be minted in December 2017. The same block, 498,888, served as the snapshot for two different forks, and BCX moved the decimal point so that every holder suddenly owned ten thousand coins per bitcoin.[3][4]

Contents

  1. Split
  2. Units and premine
  3. Claims
  4. References

Split

The BitcoinX client sets BCXHeight to 498,889, the first block with BitcoinX rules[1]. Block 498,888 on Bitcoin, the last shared block, has a header time of 10:29:53 UTC on 12 December 2017[2]. OKEx announced that both SBTC and BCX had completed their forks at that height, 18:29 Beijing time, and opened claims and trading the same evening[3]. See Super Bitcoin for the other fork at the same height.

Units and premine

BitcoinX redefines the unit so that one BTC corresponds to 10,000 BCX, and caps supply at 21 million times that rate[4]. At the fork block the client allows a premine of 1.05 million BTC-equivalent, which at that rate is 10.5 billion BCX, and requires it to be paid to a 4-of-6 multisig script built from six listed public keys[1]. Gate.io's listing notice described the premine as 5% “for maintenance and management” and warned that premined coins could be sold into the market[5].

Claims

Gate.io credited users “on a 1BTC:10000BCX rate around block height 498888” and let users trade BCX before the official wallet existed by locking BTC[5]. The project's README is a stock Bitcoin Core template that points to bcx.org[6]. Whether the chain is still producing blocks is unknown in this wiki[6].

References

  1. primaryBitcoinX src/chainparams.cpp (BCXHeight 498889, premine parameters) [archived]
  2. primarymempool.space, Bitcoin block 498,888 (header time 2017-12-12 10:29:53 UTC) [archived]
  3. primaryOKEx, notice on opening SBTC and BCX claims and trading, 12 Dec 2017 (ChainWhy archive, Chinese) [archived]
  4. primaryBitcoinX src/amount.h (BTC_2_BCX_RATE = 10000) [archived]
  5. primaryGate.io, “BCX is listed on gate.io” exchange notice, 9 Dec 2017 (ChainWhy archive) [archived]
  6. primaryBitcoinX Core README, GitHub bitcoinx-project/bitcoinx [archived]

Related

Super Bitcoin
A December 2017 fork marketed with smart contracts and 8 MB blocks, listed by a long roster of exchanges at la
United Bitcoin (UBTC)
A December 2017 fork with 8 MB blocks and smart contracts, linked in the press to Jeff Garzik, that distribute
Bitcoin God (GOD)
Chandler Guo's “Christmas” fork of Bitcoin: announced for 25 December 2017 at block 501,225, it actually split
Lightning Bitcoin (LBTC)
A December 2017 fork at block 499,999 that replaced proof of work with delegated proof of stake, unrelated to
Categories: Forks · Fork lineage
Ask about this article: >_ terminal · Onion mirror: http://btctkvroa6xsq25wmpvvlpkcgss7724zk6fm765fvtuunfgxw74j2pyd.onion/wiki/bitcoinx/
>_ ask the wiki