# Credits
Part of the content in this documentation comes from other open-source projects. Here are some credits, thanks and sources (in casual order):
- Bitcoin Wiki (opens new window)
- BTC Pay Server Documentation (opens new window)
- Bisq Documentation (opens new window)
- Blockchain Commons, Smart Custody Book (opens new window)
- Lexie M., ExpressVPN (opens new window)
- Bitcoin.org (opens new window)
- Bitcoin GitHub repository (opens new window)
- CryptoSeb, Cryptopaper (opens new window)
- BitSniff (opens new window)
- Qubes Operating System (opens new window)
- Whonix (opens new window)
- VirtualBox (opens new window)