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vet402
Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-09-04 · today
vet402Back to the registerMethodology

twitter.use.x402atlas.com/locations

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://twitter.use.x402atlas.com/locations
Sourcecdp_bazaar
Declared methodGET
Networkeip155:8453
Receiving address0x51d577c8cbb8b3fb1ba0ce31c7923cc27a07f78b
Declared price (base units)5000
Catalog statusactive
First seen / last seen2026-08-14 08:39 UTC / 2026-09-05 01:03 UTC
Catalog-reported calls / payers (30d)3 / 2

2.Probe history

2026-08-162026-09-04
Figure 1. Probe timeline, last 9 probes for this endpoint (UTC). Filled = pass, crossed = fail, dashed = unverified. Same-day probes overlap. Marks closer than one mark width are stepped down one lane.
L0 probe history, newest first
Probed atMethodVerdictHTTPLatencyReason
2026-09-04 23:40 UTCGETpass40264 ms—
2026-09-04 14:40 UTCGETpass4026 ms—
2026-09-04 05:40 UTCGETpass402403 ms—
2026-09-03 17:40 UTCGETpass40237 ms—
2026-09-03 05:40 UTCGETpass402125 ms—
2026-09-02 17:40 UTCGETpass40278 ms—
2026-09-02 05:40 UTCGETpass40241 ms—
2026-09-01 23:40 UTCGETpass402172 ms—
2026-08-16 10:39 UTCGETpass40215 ms—

3.L1 — real purchases

2 of 2 paid attempts settled with a receipt, and 2 of those also returned a 2xx response (delivered). Each settled row carries its on-chain transaction hash — the receipt is the evidence. A settled row reads as nonce-bound when the on-chain re-read also matched the one-time signature nonce we generated for that purchase, and amount + payee when it matched amount, payee, asset and chain with no nonce on record — the binding shipped on 2026-09-04, so earlier rows carry the weaker evidence and keep their label rather than being demoted (methodology). settled is the transfer we confirmed on-chain; delivered is the response arriving. A settled row whose paid request answered 4xx or 5xx counts as settled and not as delivered — definitions.

2/2
Figure 2. Settle-through: one cell per paid attempt. Filled = settled with an on-chain receipt, crossed = paid but no receipt.
L1 purchase history, newest first
Attempted atResultHTTPReceipt (tx)Latency
08-26 12:37settled (amount + payee)2000xebf12aaf…095e786 ms
5000 units (≈ $0.005 USDC) · L2 mismatch
08-16 12:50settled (amount + payee)2000x8dc95a7b…90f51034 ms
5000 units (≈ $0.005 USDC) · L2 mismatch

Embed this record

Run this endpoint? Show the settle-through record vet402 measured — the badge reads 2/2 settled · 2 delivered and updates as the record grows. It states a measurement, not a rating.

vet402: 2 of 2 paid attempts settled, 2 delivered

[![vet402 receipt](https://vet402.com/api/badge/endpoint/8f7872e6-e0e5-4072-a260-fb304ba67690.svg)](https://vet402.com/observatory/e/8f7872e6-e0e5-4072-a260-fb304ba67690)

Get one email when this record's verdict changes. No digest, no marketing — one message per change, and only for this endpoint.

4.Catalog listing events

No listing changes observed.

unverified is not a failure; a fail is published only after two consecutive failing probes. Definitions: methodology.

5.Dispute this record

Think a measurement above is wrong? Say which probe or purchase and what you observed instead. One person reads it and replies. The record is never deleted on dispute: if it was wrong, the correction is published with the same weight; if it was right, it stands. Operators who control the receiving address can also sign a dispute via POST /api/v1/observatory/disputes (API reference), which re-measures through the normal publication gate.