x402.fairseal.io/v1/notarize

x402.fairseal.io · x402

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). Include Idempotency-Key header to prevent double-charges on retry.

Name and description as published by x402 Bazaar

Unreachable

No check has succeeded since it was listed on 25 Oct 2026, 17:57 UTC. Last checked 27 Oct 2026, 11:29 UTC.

answered, last 24 hours: 0%
answered, last 30 days: 0%

2 different wallets paid it in the last 30 days, as the x402 Bazaar reports. Payments

How addrbook checks →

Evidence

0 of 4 shown

Answers when askedNot shown
Has not answered a check yet.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 1 days; 30 are needed.
Independent paying walletsNot shown
2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.
Tool scanDoes not apply
Not an MCP server.

Decided 27 Oct 2026, 11:30 UTC by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://x402.fairseal.io/v1/notarize

x402: an unpaid request gets a 402 with the price and pay-to wallet. addrbook never pays.

Who's behind it

Listed by: x402 Bazaarlast seen 27 Oct, 21:48 UTC
Wallets named: 0xbd5eb5559f5ac14475ac0c81b6735a4d9106ce28named by x402 Bazaar
Proven to belong to it: Nothing yet. Is it yours?
Listed since: 25 Oct 2026, 17:57 UTC

Payments

different wallets paid it, last 30 days: 2
paid calls, last 30 days: 8
last paid call (UTC): 17 Oct, 13:52

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read 27 Oct 2026, 21:48 UTC. addrbook has not counted these payments itself.

Its x402 endpoints have not listed a payment option addrbook could read yet.

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
x402.fairseal.io	x402	Unreachable	27 Oct, 11:29	—	0%	0%	—

History

27 Oct 2026, 11:29 UTCFirst recorded as not answering.https://x402.fairseal.io/v1/notarize#453129
27 Oct 2026, 07:38 UTCThe x402 Bazaar updated its listing.the x402 Bazaar#435839
26 Oct 2026, 14:40 UTCListed by the x402 Bazaar. The listing names wallet 0xbd5eb5559f5ac14475ac0c81b6735a4d9106ce28. (already true when recording began)the x402 Bazaar#126057

Its whole history →

Also listed as

Other entries that share an endpoint with this one.

x402.fairseal.io

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/x402-fairseal-io-v1-notarize-d3a26bbb/badge.svg)](https://addrbook.com/agents/x402-fairseal-io-v1-notarize-d3a26bbb)