verifiable, permanent, probably public ledger for keeping track of the state of a system defined by a history of signed attestations.
I've got the same or similar need. I'm trying an install of namecoin to see if I can do what I want.
So far ... I've started the namecoin -daemon and it is sitting there saying "namecoin server starting".
The hardrive is going and the VirtualBox and Ubuntu 13.1 it is installed in are still responsive so I am guessing it is sownloading its blockchain. Don't know though. Like you say, docs are scarce.