>When Shamir wrote the first Bitcoin paper over a year ago You mean 'when Ron and Shamir wrote their first Bitcoin paper'? as there were several prior papers a

>When Shamir wrote the first Bitcoin paper over a year ago You mean 'when Ron and Shamir wrote their first Bitcoin paper'? as there were several prior papers about Bitcoin; including one myself and a co-author wrote on a similar topic in 2011. We obtained our data directly from the blockchain, using a modified version of Gavin Andresen's bitcointools which we put on github (although its now out of date). We also made the extracted data available in an easy-to-parse format, for more info see: http://anonymity-in-bitcoin.blogspot.ie/2011/09/code-datasets-and-spsn11.html http://anonymity-in-bitcoin.blogspot.ie/2011/09/code-dataset...