Bitcoin InterestBCI
A January 2018 Equihash fork that added one coin per block to an “interest pool” for holders who parked their coins.
The wiki's angle: the fork that sold interest on a proof-of-work chain. Its own timing estimate was two days off, a reminder that height, not a calendar date, defines a fork.[1][2]
Contents
Launch
The README announced a fork “at block height 505083, at roughly 23:59:59 UTC Jan 22, 2018”[1]. Bitcoin block 505,083 actually carries a header time of 20 January 2018, 02:04:45 UTC[2].
Design
Bitcoin Interest used Equihash with 10-minute blocks and difficulty recalculated every block[1]. Each block paid 12.5 BCI to the miner and 1 BCI to an interest pool, from which holders who “park” coins collect interest[1]. The supply was raised to 22 million coins, which the README attributes to listing and development costs[1].
References
- primaryBitcoinInterestOfficial/BitcoinInterest README (GitHub) [archived]
- primarymempool.space, Bitcoin block 505,083 (header time 2018-01-20 02:04:45 UTC) [archived]