Bitcoin mining on a 55 year old IBM 1401 mainframe: 80 seconds per hash

Postat de: Cristian Gherman
Daca vrei poti face si pe masini de pe vremea bunicului… http://www.righto.com/2015/05/bitcoin-mining-on-55-year-old-ibm-1401.html

The photo below shows the card deck I used, along with the output of my SHA-256 hash program as printed by the line printer. (The card on the front of the deck is just for decoration; it was a huge pain to punch.) Note that the second line of output ends with a bunch of zeros; this indicates a succe…

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