http://understandingbitcoin.us/2014/12/10/version-1-has-been-released/2014-12-10T01:21:20+00:00http://understandingbitcoin.us/2014/12/11/released-1-1-with-typos-and-oversights-fixed/2014-12-11T08:20:22+00:00http://understandingbitcoin.us/2017/12/02/released-version-1-11-with-more-minor-changes/2017-12-02T04:45:26+00:00