Too Long; Didn't Read
In 2009, the paper released by Satoshi Nakamoto in 2008 became an actual project. The very first bitcoin client was released on the 9th of January and SourceForge hosted it. On the 12th of January, Hal Finney, one of the first adopters took part in the world’s first peer-to-peer transaction. He received 10 bitcoins from Nakamoto.