Okamoto explains why his “electronic cash” patent may have presented obstacles to Hal Finney’s plans to make his own electronic currency.
Source: https://cointelegraph.com/news/renowned-cryptographer-says-his-patent-was-an-obstacle-for-hal-finney
Renowned Cryptographer Says His Patent Was an Obstacle for Hal Finney
July 4, 2020
CoinTelegraph