Bitcoin’s culture today emphasizes “don’t trust, verify.”When Satoshi Nakamoto released Bitcoin v0.1.0 on SourceForge in January 2009, the software already included cryptography, networking, a wallet, mining, and even a GUI.My question is:Did Satoshi write all of this from scratch in C++, or did he trust external libraries for certain components?For example: OpenSSL (crypto), Berkeley DB (storage), wxWidgets (GUI), Winsock (networking).If he did rely on external libraries, was that an intentional case of “trust but verify” — using proven code where possible, while implementing consensus rules himself?What risks or trade-offs came from this approach?In short: how much of Bitcoin v0.1 was original Satoshi code, and how much depended on trusted third-party libraries?