Today, 16 years ago, Satoshi released the first public version of the #Bitcoin software, 5 days after mining the Genesis Block.
As soon as the P2P network had at least one peer, proof-of-work block production began. Block 1 was only found on the 9th!
👆v.0.1
Here is the "original" repository, which was started by Satoshi... It migrated to github in 2015 because it was a better platform, with more network effect, and that's where they created the concept of "Bitcoin Core" (supposedly to encourage other implementations)
Since then, all new versions have been documented on this platform, with thousands of forks and eyes on probably the most audited open source that has ever existed.