Hal Finney comes from Series 5, a set in Cardsmiths Currency, a premium collector line tracing the history of money from ancient coinage to cryptocurrency. The illustration is credited to CARDSMITHS. It is numbered 33 out of 167. The card comes in 25 variants, and Onyx is the tightest of them at 1.
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Hal Finney was a computer scientist, cryptographer, and software developer who developed the first reusable proof-of-work system, which became a cornerstone of Bitcoin. In January 2009, he received the first-ever Bitcoin transaction from Satoshi Nakamoto, the pseudonym for the unknown creator of Bitcoin.
