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...