DID YOU KNOW: Bitcoin's source code is buried in the Arctic World Archive, a vault designed to survive for 1,000 years. In 2020, GitHub archived Bitcoin's entire codebase onto 186 reels of archival film and deposited them in a decommissioned coal mine beneath the permafrost in Svalbard, Norway. The archive holds 21 terabytes of open-source code including Bitcoin, Linux and Python.