@silverpill @erlend
The easiest way is something like this:
1. We have one small blockchain without coins.
2. Every server is proving their authority over their domain, and create a block in blockchain.
3. Every other node/server is checking for some key published on that server, for example server1.example/root.key AND accept that block in their copy of blockchain.
4. After that this server can create IDs in its 'namespace', signing blocks with new identities by its key.
5. Maybe every identity can have their own keypair to move from one 'namespace' to another. Even if that server1 dies.