Renowned Cryptographer Says His Patent Was an Obstacle for Hal Finney

Cointelegraph

Published Jul 04, 2020 03:00PM ET

Updated Jul 05, 2020 05:00PM ET

Tatsuaki Okamoto explains why his “electronic cash” patent might have presented an obstacle to Hal Finney in his ambition to create his own electronic currency.

Sometime before Dec. 6, 2004, Hal Finney did a search in a patent database on “blind-signature based cash systems”. On his site he posted a list of six such patents:

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