ABC vs BCHN split
The November 2020 split in which Bitcoin ABC, insisting on an 8% coinbase funding rule, left Bitcoin Cash; its chain became BCHA, later eCash.
The wiki's angle: the only Bitcoin Cash split fought over money for developers rather than block size, and the episode in which the original client lost the ticker it created.[1][4]
The rule
Bitcoin Cash's November 2020 upgrade split the chain at block 661,648 over the 8% coinbase rule, and the ABC chain traded as BCHA[1]. Wikipedia describes it as a second contested hard fork in which the leading node implementation, Bitcoin ABC, created BCHA[2]. The rule is documented in eCash's Infrastructure Funding Plan[3].
ABC's side
On S17 E19, Amaury Séchet said “the core of the split was really around the funding”: other implementations had more funding than ABC, which was “constantly running out of money”, so it needed a self-funding mechanism[4].
BCHN's side
On S17 E26, Calin Culianu summarised it as “Bitcoin ABC until Amaury decided to charge tax, and then we kicked them out”, with the remaining code renamed Bitcoin Cash Node[5].
Afterwards
BCHA was renamed eCash (XEC) on 1 July 2021, at 1 BCHA to 1,000,000 XEC[1].
Heard on Bitcoin Takeover
Marc De Mesel described his side of the 2020 split on S17 E44 (September 2026): “I really did not agree with what Amaury was planning for Bitcoin Cash. He planned to introduce a, they call it dev tax.”[6]
References
- btkeCash (XEC): The Fork That Taxed Itself (BTCTKVR: Forks!) [archived]
- secondaryWikipedia, “Bitcoin Cash” [archived]
- primaryeCash, Infrastructure Funding Plan [archived]
- episodeS17 E19: Amaury Séchet — the funding dispute at the core of the 2020 split▶ listen at 2:26:25timestamp transcript-derived, pending a listen [archived]
- episodeS17 E26: Calin Culianu — from Bitcoin ABC to Bitcoin Cash Node▶ listen at 2:25:03timestamp transcript-derived, pending a listen [archived]
- episodeS17 E44: Marc De Mesel on opposing the ABC dev tax▶ listen at 8:16timestamp transcript-derived, pending a listen [archived]