Cryptographic signature may as well be a foreign key. It's a super database. Just admit it. You aren't fooling anyone with extra layers of indirection. If it ca

Cryptographic signature may as well be a foreign key. It's a super database. Just admit it. You aren't fooling anyone with extra layers of indirection. If it can be interrogated in the manner of a super database, has business requirements in parallel to what a super database would be used for, regardless of minutiae of the implementation, it is, a super database. A rose by any other name...