Other retro-computing enthusiasts are fascinated with the computing of the era, including the Apollo Guidance Computer (AGC), with one team working to restore an AGC that was never flown. Discarded by NASA after vacuum testing of the lunar module (LTA-8) ahead of crewed flights, this computer is now the worlds only working Apollo Guidance Computer.
Of course, once you have a working Apollo Guidance Computer, obviously the next thing you need to do is getting it mining Bitcoin?
“The Apollo Guidance Computer took 5.15 seconds for one SHA-256 hash. Since Bitcoin uses a double-hash, this results in a hash rate of 10.3 seconds per Bitcoin hash. Currently, the Bitcoin network is performing about 65 EH/s (65 quintillion hashes per second). At this difficulty, it would take the AGC 4×10²³ seconds on average to find a block. Since the universe is only 4.3×10¹⁷ seconds old, it would take the AGC about a billion times the age of the universe to successfully mine a block.”—Ken Shirriff
It’s also not the team’s first experiment with ‘absurd’ Bitcoin mining, with Shirriff having mined Bitcoin by hand using pencil and paper with a hash rate of 0.67 hashes per day.
Now only a couple of weeks away on July 20th , the 50th anniversary of Apollo 11 landing is surrounded by any number of special events. However with the date fast approaching it’s really great to see other work, including the creation of a virtual Apollo Guidance Computer, that’s been done around the programme over the last decade or more starting to get a lot more publicity.