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Pre-Bitcoin · 2004

Reusable Proofs of Work

Hal Finney’s RPOW system let proof-of-work tokens be transferred and reused through trusted computing hardware.

Why it matters

RPOW was another major bridge between proof of work and transferable digital value.

Key ideas

Primary and technical sources

Satoshi Nakamoto InstituteSatoshi Nakamoto InstituteBitcoin: A Peer-to-Peer Electronic Cash SystemSatoshi Nakamoto

Related concepts