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Money2069
Hal Finney

Hal Finney

BuilderCrypto1956–2014· American

Cypherpunk, PGP developer, and the recipient of the first Bitcoin transaction from Satoshi. His RPOW (Reusable Proof-of-Work) was the missing link between Hashcash and Bitcoin. The first person to run a Bitcoin node besides Satoshi.

Key Ideas
Reusable proof-of-workPGPcryptographic cash
Links
Wikipedia