Description
The complete v0.01 Alpha source with commentary embedded in the listing — context anchored to the lines it explains, not siloed in a separate appendix.
On January 3, 2009, Satoshi Nakamoto launched Bitcoin with a single executable and these 2,300 lines of C++.
This volume walks that first public release file by file. Explanations appear inline: annotation blocks break the code flow where they belong, so you read the original source and the commentary as one continuous thread — data structures, algorithms, and design choices spelled out without leaving the program in front of you.
Source code copyright © 2009 Satoshi Nakamoto · MIT/X11 License
Annotations by Claude Opus 4,5 (Revised Sonnet 4.6)





