It was my understanding that double spending wasn't possible? While I'm far from authoritative on the matter, under certain circumstances, it appears to be ver

It was my understanding that double spending wasn't possible? While I'm far from authoritative on the matter, under certain circumstances, it appears to be very possible. Here's one person's explanation of their $10,000 double-spend during a hard fork of the blockchain: https://bitcointalk.org/index.php?topic=152348.0 https://bitcointalk.org/index.php?topic=152348.0 A mining pool also manipulated the block chain to run a double-spend attach against a dice betting site: http://www.reddit.com/r/Bitcoin/comments/1qqmr4/ghashiocexio_and_doublespending_against_betcoin/ http://www.reddit.com/r/Bitcoin/comments/1qqmr4/ghashiocexio...