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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-11-11 · 1 day ago

api.firstmention.uk/s/bizcal-api/day

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://api.firstmention.uk/s/bizcal-api/day
Sourcecdp_bazaar
Declared methodGET
Catalog networkeip155:8453
Receiving address0x3cfd4b1afe41ad99b11881d77e2b0d9adc212f13
Declared price (base units)10000
Catalog statusactive
First seen / last seen2026-10-26 13:04 UTC / 2026-11-04 04:05 UTC
Catalog-reported calls / payers (30d)5 / 3

2.Probe history

2026-10-272026-11-11
Figure 1. Probe timeline, last 8 probes for this endpoint (UTC). Filled = pass, crossed = fail, dashed = unverified. Same-day probes overlap.
L0 probe history, newest first
Probed atMethodVerdictHTTPLatencyReason
2026-11-11 04:40 UTCGETpass402401 ms—
2026-11-08 22:40 UTCGETpass402560 ms—
2026-11-06 16:40 UTCGETpass402803 ms—
2026-11-04 13:40 UTCGETfail503316 msno_402HTTP 503 instead of 402 to an unpaid GET.
2026-11-01 16:40 UTCGETfail402375 msprice_mismatchDeclared 10000 of 0x8335…2913; the 402 offered 30000 of 0x8335…2913.
2026-10-30 13:40 UTCGETpass402360 ms—
2026-10-28 16:40 UTCGETpass402329 ms—
2026-10-27 00:40 UTCGETpass402961 ms—

3.L1 — real purchases

1 of 1 paid attempts settled on-chain, and 0 of those also returned a deliverable 2xx response (delivered: other than 202 Accepted with a non-empty body). 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 matched the one-time value stored for that purchase, so the transaction is the one for this purchase. Stellar is not in this count. The Stellar re-read checks payer, payee, amount and asset. A row reads as amount + payee when the re-read matched payer, payee, amount and asset and did not bind a one-time value. That tier holds rows from before 2026-09-04 and Stellar rows. They keep the settled label rather than being demoted (methodology). settled is the transfer vet402 confirmed on-chain. delivered is a 2xx other than 202 with a non-empty body. 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 (1 settled and answered 4xx, 0 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).

Terms in this table

settled (nonce-bound)
vet402 re-read the transfer on-chain in that chain's pinned settlement asset, and the on-chain re-read matched the one-time value stored for that purchase, so the transaction is the one for this purchase. Stellar is not in this count.
settled_4xx
held_reason in the export: the payment settled, then the paid request got a 4xx.
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 “attribution under review”; vet402's side; or not sorted (the rules).
1/1
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 txPayment chainLatency
10-27 05:31settled (nonce-bound)4000x7c20df44…20c0Base1510 ms
10000 units (≈ $0.01 USDC) · L2 not_checkedWhose side: not sorted (held)

Embed this record

Run this endpoint? Show the settle-through record vet402 measured — the badge reads 1/1 settled · 0 delivered · 1 inconclusive 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: 1 of 1 paid attempts settled with an on-chain receipt, and 0 of those also returned a deliverable HTTP 2xx response. settled is the confirmed transfer; delivered is a 2xx other than 202 with a non-empty body. 1 paid attempt is held as inconclusive rather than counted against the seller: a paid request that answered 4xx, settled or not, can be our own request being malformed, because vet402 buys with no API key and sends a request body only when the seller declares one; and a 402 or 5xx from 2026-09-13 to 2026-09-15 came while vet402's own payer wallet was out of USDC. A measurement of what happened when vet402 paid this endpoint, not a recommendation. (api.firstmention.uk · measured 2026-10-27)

[![vet402 receipt](https://vet402.com/api/badge/endpoint/80036b97-c9a9-49a9-a35c-da5f8a1f711b.svg)](https://vet402.com/observatory/e/80036b97-c9a9-49a9-a35c-da5f8a1f711b)

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

A dispute does not start a purchase. The signed dispute route runs one fresh L0 check, an unpaid request.

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. A dispute filed on the record form puts an active listing on a priority list. L0 runs probe that list before their ordinary queue, one run at a time. A listing whose URL has an unfilled path parameter is not put on that list. One run measures up to 50 priority listings, at most 5 from one site. Published fails whose catalog declaration changed, or that rest on probes recorded under earlier rules, take places first, and disputes fill the places left. A listing probed in the past 60 minutes waits for a later run. A dispute that no run reaches within 7 days leaves the list. The scheduled L0 run is at 10:30 UTC, and an L0 run at another time can measure the listing first. The record stays on this page. When a run measures the listing, the new probe is added to its history. Send the dispute to support@vet402.com. Published corrections are listed at /corrections. Operators who control the receiving address can also sign a dispute via POST /api/v1/observatory/disputes (API reference). That route runs one fresh L0 check under the normal publication gate. A later purchase comes from the regular schedule.

About the purchase at 2026-10-27T05:31:59Z (UTC). The form starts with that time; add what you saw instead.

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