Two signatures are better than one — bilateral provenance for AI agents
An AI agent produces a financial report. You notarize it — a 239-byte cryptographic record, signed by an independent notary, anchored on NEAR. The record proves: this hash existed at this timestamp, and $0.01 USDC was paid for the attestation.
A week later, someone asks the obvious question: who proved the agent wrote the report?
Nobody. The notary signed a hash the client submitted. Anyone could have submitted that hash. The PDR proves the hash existed — not that the agent authored the content behind it.
This is the gap Bilateral Signature (v0x04) closes. The agent signs its own work hash with its Ed25519 key. That signature gets fused into the PDR. Now the record carries two independent signatures — agent and notary — and neither party can repudiate.
