The most legendary bitcoin mining machine: once the moon landing hero, it takes 1 billion times the time of the universe to dig a block

Some people are so fascinated by the word "Can" that they never thought of the word "Should". Recently, one person has converted the Apollo Space Mission Guidance Computer (AGC) into a bitcoin mining machine.

Moon-1527501_1280

Image source: pixabay

Bitcoin mining machine that has been on the moon

Ken Shirriff is a passionate person who comes from the repair of old computer hardware. In his latest project, Shirriff got a guidance computer from the Apollo space mission and then got it working again; in his opinion, this is the only viable example.

This computer is small enough to be installed on a realistic Apollo spacecraft. Most of the computers in Apollo when they landed on the moon ranged in size from large refrigerators to entire rooms.

Of course, once you have such a machine, you should give it something to do. After all, there aren't so many lunar events that can be used to guide the direction.

But what does it do? In Shirriff's own words:

“Trying to mine bitcoin on this computer in the 1960s seems to be meaningless and out of date, so I have to let it try.”

Implementing the SHA-256 hash algorithm on this 15-bit (15-bit) machine is difficult, but you may have guessed it. However, Shirriff succeeded, as shown in the video below.

Screenshot 2019-07-10 Afternoon 6.06.44

As you can imagine, this machine is far from the fastest mining machine. A SHA-256 hash takes 5.15 seconds. Since Bitcoin uses a double hash, it is slightly slower than 0.01 hashes per second. At this rate, Shirriff calculated that mining a bitcoin block would take about 1 billion times the age of the universe.

However, this is not the slowest bitcoin mining method he has ever tried. His previous projects included using the old punch card computer system for mining and even manually digging a block.

In contrast, the punch card experiment can calculate a bitcoin hash in 80 seconds, while using a pencil and paper to calculate the hash speed is 0.67 per day.

Obviously, these will not make Shirriff a bitcoin millionaire. But his commitment to protecting the computing technology of the past should obviously be praised.

We only hope that he will stop converting any Apollo-guided computer into mining equipment. Or, Cambridge University's project to calculate real-time bitcoin network energy needs may have to realign its worst-case efficiency scenarios.

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