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Inventor of ecash / DigiCashDigital cash foundations✓ Verified
David Chaum
Pioneered digital cash and blind signatures.
Known as David ChaumActive Jan 1982 →
Why they matter
Chaum proved electronic cash with strong privacy was possible, and its centralized failure mode framed the precise problem Bitcoin set out to solve: digital money with no trusted issuer.
Profile
Cryptographer who in the 1980s invented blind signatures and built DigiCash / ecash, the first serious attempt at private electronic money. DigiCash relied on a central issuer and folded in 1998, but its cryptographic privacy ideas were foundational.