[[!comment format=mdwn username="http://joey.kitenet.net/" nickname="joey" subject="comment 3" date="2011-04-09T20:11:59Z" content=""" I wouldn't say it's completly impossible for a WORM100 to work. It would just have the contract that the pair of mtime+100chars has to be unique for each unique piece of data. But, I have yet to be convinced there's any point, since SHA1 exists. """]]