Bitcoin Ore (BCO)BCO
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.
The wiki's angle: Bitcoin Ore's first issuance existed only on exchange ledgers, and its team said it might base the coin on United Bitcoin rather than Bitcoin.[1]
Pitch
The archived site, captured on 20 February 2018, calls BCO “A brand new POC mining ecosystem for everyone”, letting users mine with unused hard disk space[1]. Its fork rules give 1 BTC to 1 BCO, a total supply of 21,000,000 and “Proof of Capacity (POC)” mining, with 8MB blocks every 5 minutes marked as to be confirmed[1].
The exchange issuance
A notice dated 2017/12/31 says the team had agreements with zb.com, aex.com, exx.com and lbank.info, and that the main chain would “issue Bitcoin Ore to users of these four exchanges at block height of 501949”[1]. Block 501,949 was mined on 31 December 2017[2]. The same notice says “In addition to classic Bitcoin we are also looking at United Bitcoin (UBTC), which is a strong alternative” as a base, meaning United Bitcoin[1].
Record
The 2019 fork list gives “fork at 501949” and “no source code available”[3].
References
- primaryBitcoin Ore website, bitcoinore.org (Wayback Machine copy, 20 Feb 2018)
- primarymempool.space, Bitcoin block 501,949 (header time 2017-12-31 22:53:08 UTC) [archived]
- secondary“My list of 43(+3) reviewed Bitcoin forks”, Bitcointalk topic 2777849 (last update 26 Feb 2019) [archived]