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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-09-30 · today

x402-adsb.x402-adsb-worker.workers.dev/aircraft

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://x402-adsb.x402-adsb-worker.workers.dev/aircraft
Sourcecdp_bazaar
Declared methodGET
Networkeip155:8453
Receiving address0x751c6acf5d1b704a1ad983a526207600968b4e41
Declared price (base units)1000
Catalog statusactive
First seen / last seen2026-08-14 08:52 UTC / 2026-09-30 01:03 UTC
Catalog-reported calls / payers (30d)8 / 7

2.Probe history

2026-09-102026-09-30
Figure 1. Probe timeline, last 30 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
2026-09-30 13:40 UTCGETpass402268 ms—
2026-09-29 13:40 UTCGETpass402379 ms—
2026-09-28 16:40 UTCGETpass4021178 ms—
2026-09-27 22:40 UTCGETpass402261 ms—
2026-09-27 13:40 UTCGETpass402318 ms—
2026-09-26 16:40 UTCGETpass402407 ms—
2026-09-25 22:40 UTCGETpass402207 ms—
2026-09-25 04:40 UTCGETpass4022304 ms—
2026-09-24 13:40 UTCGETpass402400 ms—
2026-09-23 16:40 UTCGETpass402638 ms—
2026-09-22 22:40 UTCGETpass402425 ms—
2026-09-22 04:40 UTCGETpass402458 ms—
2026-09-21 13:40 UTCGETpass402369 ms—
2026-09-20 16:40 UTCGETpass4022067 ms—
2026-09-19 22:40 UTCGETpass402357 ms—
2026-09-19 04:40 UTCGETpass402211 ms—
2026-09-18 16:40 UTCGETpass402373 ms—
2026-09-17 22:40 UTCGETpass402241 ms—
2026-09-17 04:40 UTCGETpass402222 ms—
2026-09-16 16:40 UTCGETpass402524 ms—
2026-09-15 16:40 UTCGETpass402627 ms—
2026-09-14 22:40 UTCGETpass402506 ms—
2026-09-14 13:40 UTCGETpass402409 ms—
2026-09-13 16:40 UTCGETpass402351 ms—
2026-09-13 04:40 UTCGETpass402400 ms—
2026-09-12 13:40 UTCGETpass402348 ms—
2026-09-11 22:40 UTCGETpass402642 ms—
2026-09-11 13:40 UTCGETpass402419 ms—
2026-09-10 17:40 UTCGETpass402449 ms—
2026-09-10 05:40 UTCGETpass402556 ms—

3.L1 — real purchases

3 of 4 paid attempts settled on-chain, and 3 of those also returned a 2xx response (delivered). Each settled row carries its on-chain transaction hash, and that transaction is the evidence. On this page a receipt means the seller's own settlement receipt (PAYMENT-RESPONSE); a settled row can have none (see “tx from our index”). 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 5xx counts as settled and not as delivered — definitions.

Terms in this table

settled (nonce-bound)
vet402 confirmed the USDC transfer on-chain, and the on-chain re-read also matched the one-time nonce vet402 signed for that purchase.
settle_failed
vet402 signed a payment and got no settlement receipt back.
L2 no_declaration
the listing declares no output schema to check the response against.
L2 not_checked
not checked: the paid request did not answer 200, so there was no response to check against the listing's output schema.
Whose side
the same words as the seller page: seller's side only after failures on two different days (UTC), marked “under re-check”; vet402's side; or not sorted (the rules).
3/4
Figure 2. Settle-through: one cell per paid attempt. Filled = settled on-chain, crossed = signed, and not settled on-chain.
L1 purchase history, newest first
Attempted atResultHTTPOn-chain txLatency
09-23 18:01settled (nonce-bound)2000x0cf94f80…d0332771 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)
09-17 12:09settled (nonce-bound)2000x13cd662d…c58e3021 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)
09-11 01:01settled (nonce-bound)2000xa4daa6a2…b27a3094 ms
1000 units (≈ $0.001 USDC) · L2 no_declarationWhose side: no failure (delivered)
09-03 01:01settle_failed503—963 ms
1000 units (≈ $0.001 USDC) · L2 not_checkedWhose side: not sorted: vet402 unproven

Embed this record

Run this endpoint? Show the settle-through record vet402 measured — the badge reads 3/4 settled · 3 delivered and updates as the record grows. It carries the host it is about and the date it was last measured, so a saved copy cannot pass itself off as current. It states a measurement, not a rating.

vet402: 3 of 4 paid attempts settled with an on-chain receipt, and 3 of those also returned a 2xx response. settled is the confirmed transfer; delivered is the response arriving. A measurement of what happened when vet402 paid this endpoint, not a recommendation. (x402-adsb.x402-adsb-worker.workers.dev · measured 2026-09-23)

[![vet402 receipt](https://vet402.com/api/badge/endpoint/4927a3bd-5d22-477a-adec-fffb768f475f.svg)](https://vet402.com/observatory/e/4927a3bd-5d22-477a-adec-fffb768f475f)

Get one email when this record's verdict changes. No digest, no marketing — one message per change, and only for this endpoint. We first send one confirmation email; nothing else goes out until you confirm.

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.

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