Mining Bitcoin with pencil and paper

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Mining Bitcoin with pencil and paper

by Ken Shirriff

If you think those mining-rigs are to expencive, let alone the loud bitmain antminers, then you should consider to geek all out and start mining SHA-256 blocks with pencil and paper. It can’t get cheaper.

Bitcoins are mined using a cryptographic algorithm called SHA-256. This algorithm is simple enough to be done with pencil and paper, as I show in this video. Not surprisingly, this is a thoroughly impractical way to mine. One round of the algorithm takes 16 minutes, 45 seconds which works out to a hash rate of 0.67 hashes per day.