David Chaum – Blind Signatures For Untracable Payments http://www.hit.bme.hu/~buttyan/courses/BMEVIHIM219/2009/Chaum.BlindSigForPayment.1982.PDF https://en.wikipedia.org/wiki/David_Chaum btcartgallery2019-01-31T20:44:15+00:00December 12th, 1982|Bitcoin, History, photo|
Bitcoin Prehistory via @AnselLindner btcartgallery2019-02-05T22:15:53+00:00December 30th, 1974|Bitcoin, Charts, History|
