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from the blockchain, using a modified version of Gavin Andresen's bitcointools which we put on github (although its now out of date).
Comments
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from the blockchain, using a modified version of Gavin Andresen's bitcointools which we put on github (although its now out of date).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-dataset...