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A comment on Bitcoin: A Peer-to-Peer Electronic Cash System (2008) [pdf]. Parent comment

Re:Bitcoin: A Peer-to-Peer Electronic Cash System (2008) [pdf] by CalChris on Friday December 08, 2017 @08:16PM (#15883583)
Even further. Bitcoin really stems from Merkle Trees which were patented in 1979 [1]. But most of the ideas are present in Szabo's bitgold [2].

[1] https://www.google.com/patents/US4309569

[2] https://en.wikipedia.org/wiki/Nick_Szabo#Bit_gold

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