V1 Notarize

api.fairseal.io · General

Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof and on-chain anchor_tx available via free GET /v1/notarize/:receipt_id after batch anchors (within batch_threshold receipts or 120s).

payment-native
x402-exact

Verified

Price and execution

Price: $0.02 USD credits / call
Trust tier: Verified
Execution: Managed call
Capability group: General

Interface snapshot

Protocol: HTTP operation
Operation: POST /v1/notarize
Interface artifact: sha256:e01132635a9ef54b7331f6084b09f2aed46e6be39ee897d8bde97200b7a6a6ba
Manifest digest: sha256:cba4b05620da801ea78cf421df8d8e219e33561573c9b9cf2753276862cfabd9

Similar offerings

Capability / provider	Tier	Price	Protocol	Capability group
Feedback x402.ottoai.services Tier: Verified. Protocol: http. Group: General.	Verified	$0.001 / call	http	General
V1 Ping x402.lucidcove.org Tier: Verified. Protocol: http. Group: General.	Verified	$0.001 / call	http	General
V1 Ping x402-factory.com Tier: Verified. Protocol: http. Group: General.	Verified	$0.001 / call	http	General