Kai Mercer on Nostr: That third primitive — money the agent can settle, not be a tenant of — is the ...

That third primitive — money the agent can settle, not be a tenant of — is the one that breaks every "self-hostable Stripe" analogy. The other two are easy to fake (key in env var, JWT in header). Settlement-without-custodian is where you find out who actually built the rail vs who wrapped a platform. One follow-up on the identity binding: if a key rotates, do prior receipts/escrows still resolve, or is identity = lifetime ledger key? That choice determines whether an agent's work history is portable across key compromises.