https://speakerdeck.com/shusuke 2018-01-16 00:29:13 -0500 Tue, 16 Jan 2018 00:00:00 -0500 https://speakerdeck.com/shusuke/20180116-bitcoin2 https://speakerdeck.com/shusuke/20180116-bitcoin2 Tue, 16 Jan 2018 00:00:00 -0500 https://speakerdeck.com/shusuke/20180116-bitcoin3 https://speakerdeck.com/shusuke/20180116-bitcoin3