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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-09-29 · today

apiacre.com/v1/data/contract

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://apiacre.com/v1/data/contract
Sourcecdp_bazaar
Declared methodPOST
Networkeip155:8453
Receiving address0xa0bfa4f07281c9b248dc3aed2217836bca24869b
Declared price (base units)35000
Catalog statusactive
First seen / last seen2026-08-15 01:36 UTC / 2026-09-29 01:03 UTC
Catalog-reported calls / payers (30d)1 / 1

2.Probe history

2026-09-092026-09-29
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
2026-09-29 04:40 UTCPOSTpass402599 ms—
2026-09-28 13:40 UTCPOSTpass402646 ms—
2026-09-27 16:40 UTCPOSTpass402508 ms—
2026-09-26 22:40 UTCPOSTpass402425 ms—
2026-09-26 04:40 UTCPOSTpass402502 ms—
2026-09-25 13:40 UTCPOSTpass402474 ms—
2026-09-24 16:40 UTCPOSTpass402368 ms—
2026-09-23 22:40 UTCPOSTpass402335 ms—
2026-09-23 04:40 UTCPOSTpass402406 ms—
2026-09-22 13:40 UTCPOSTpass402548 ms—
2026-09-21 16:40 UTCPOSTpass4022123 ms—
2026-09-20 22:40 UTCPOSTpass402313 ms—
2026-09-20 04:40 UTCPOSTpass402410 ms—
2026-09-19 13:40 UTCPOSTpass402349 ms—
2026-09-18 22:40 UTCPOSTpass402365 ms—
2026-09-18 04:40 UTCPOSTpass4022342 ms—
2026-09-17 13:40 UTCPOSTpass402395 ms—
2026-09-16 16:40 UTCPOSTpass402394 ms—
2026-09-15 22:40 UTCPOSTpass402488 ms—
2026-09-15 04:40 UTCPOSTpass402334 ms—
2026-09-14 16:40 UTCPOSTpass402519 ms—
2026-09-13 22:40 UTCPOSTpass402353 ms—
2026-09-13 13:40 UTCPOSTpass402347 ms—
2026-09-12 16:40 UTCPOSTpass402112 ms—
2026-09-12 04:40 UTCPOSTpass402135 ms—
2026-09-11 16:40 UTCPOSTpass402401 ms—
2026-09-10 23:40 UTCPOSTpass402396 ms—
2026-09-10 14:40 UTCPOSTpass402580 ms—
2026-09-09 23:40 UTCPOSTpass402409 ms—
2026-09-09 05:40 UTCPOSTpass402289 ms—

3.L1 — real purchases

0 of 1 paid attempts settled with a receipt, and 0 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 5xx counts as settled and not as delivered — definitions.

1 of those paid attempts are held as inconclusive rather than counted against this seller (0 settled and answered 4xx, 1 answered 4xx with no settlement receipt, 0 answered 402 or 5xx while our own payer wallet was out of USDC, 2026-09-13 00:00 to 2026-09-15 23:49 UTC). A 4xx says the request was not one the server would accept, and we cannot rule out that the request was ours to get wrong: vet402 buys with no API key of the seller's, and sends a POST body only when the seller declares one. This is the same principle the methodology already applied to path_template URLs, applied to the body and the authentication header as well. The rows are not deleted and not hidden — they are below, with their status and HTTP code, and they are out of the denominator for delivered (corrections).

1 of the paid attempts failed on vet402's side (for example our wallet was out of USDC, or we did not send the input the listing declares). The rows stay in the table.

Terms in this table

settle_failed
vet402 signed a payment and got no settlement receipt back.
unsettled_4xx
held_reason in the export: the paid request got a 4xx with no settlement receipt and no transaction.
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).
0/1
Figure 2. Settle-through: one cell per paid attempt. Filled = settled with an on-chain receipt, crossed = signed, and not settled on-chain.
L1 purchase history, newest first
Attempted atResultHTTPReceipt (tx)Latency
09-06 07:02settle_failed422—499 ms
35000 units (≈ $0.04 USDC) · L2 not_checkedWhose side: vet402's side

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.

About the purchase at 2026-09-06T07:02:15Z (UTC). The form starts with that time; add what you saw instead.

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apiacre.com/v1/data/contract — x402 purchase and probe record | vet402