Bitcoin v0.0 (BTC)

Bitcoin v0.0 refers to the pre-release, unreleased source code developed by Satoshi Nakamoto around September 2008, featuring a discarded genesis block, according to a Medium article. It likely used a different hash and, in early analysis, indicated a potential, much higher, maximum coin supply, say early Bitcoin analysts. This preliminary version set the stage for the official v0.1 release in January 2009.