doesn't notary chains on XCH (xcp clone for viacoin) basically do what factom says it wants to do?
or am I missing something?
no one is even really using notary chains at the moment btw (although it is a nice idea)... people are building solutions for 5 years from now is what is happening
Just to expand it a bit - XCH has a "blockchain notary service" implemented and "custody chains" are in development now. Yes, this is all very close to what Factom is developing, however Factom outsources 99% of this work and data storage away from the Blockchain of choice (Viacoin, in this case) and on to their own network. You can probably roll your own in house Factom server/infrastructure too. XCH look like they will stuff everything into their Blockchain.