How to prove an AI agent output existed — x402 + NEAR anchoring in practice
Why this matters
You deployed an AI agent. It generated a financial report, a code review, a medical summary. A week later, someone questions the output. Did the agent actually produce this? When? Was it modified after the fact?
Logs are mutable. Timestamps lie. Git history can be rewritten.
What you need is a cryptographic proof — signed by an independent notary — that binds a specific artifact hash to a specific point in time. And it should cost less than a cent.
