api.fairseal.ioPOST
Notarize an AI agent decision, audit record, or any payload to Base mainnet. Submit SHA-256 hash + metadata; get a tamper-proof verifiable receipt immediately. Merkle proof and on-chain anchor_tx available free after batch (~120s). Use Idempotency-Key to prevent double-charges on retry.
Api EndpointBlockchain And CryptoHealthy · 325 ms0.05 USDC0.05 USDC · eip155:8453 · USDC0.05 USDC · eip155:8453 · USDC
https://api.fairseal.io/v1/notarize