> If there was a digital notary service where you could digitally sign and timestamp a file, that might help a bit. The Bitcoin block chain might fit this need

> If there was a digital notary service where you could digitally sign and timestamp a file, that might help a bit. The Bitcoin block chain might fit this need. There are already multiple[1] services[2] out there[3] doing block chain notary. [1] http://www.proofofexistence.com/ http://www.proofofexistence.com/ [2] http://www.blocknotary.com/ http://www.blocknotary.com/ [3] http://virtual-notary.org/ http://virtual-notary.org/