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Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-10-01 · 7 days ago

quartermaster.surewhynot.app/v1/balance

1.Catalog declaration

Catalog declaration for this endpoint
Resource URLhttps://quartermaster.surewhynot.app/v1/balance
Sourcecdp_bazaar
Declared methodGET
Networkeip155:8453
Receiving address0x5253666c40432f009ebd99908b9cd2a7fd1019cb
Declared price (base units)1000
Catalog statusactive
First seen / last seen2026-08-14 08:39 UTC / 2026-10-07 13:03 UTC
Catalog-reported calls / payers (30d)4 / 4

2.Probe history

2026-08-142026-10-01
Figure 1. Probe timeline, last 9 probes for this endpoint (UTC). Filled = pass, crossed = fail, dashed = unverified. Same-day probes overlap.
L0 probe history, newest first
Probed atMethodVerdictHTTPLatencyReason
2026-10-01 10:30 UTCGETpass402629 ms—
2026-09-25 10:31 UTCGETpass402319 ms—
2026-09-21 11:24 UTCGETpass402124 ms—
2026-09-17 16:19 UTCGETpass402535 ms—
2026-09-14 11:24 UTCGETpass402322 ms—
2026-09-11 11:24 UTCGETpass402523 ms—
2026-09-07 11:24 UTCGETpass40285 ms—
2026-09-02 11:24 UTCGETpass402198 ms—
2026-08-14 08:53 UTCGETfail40211 msaccepts_invalid402 without a payable accept in the header or the body (which part was missing was not recorded before the 2026-09-29 change).

3.L1 — real purchases

0 of 1 paid attempts settled on-chain, and 0 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

settle_failed
vet402 signed a payment and got no settlement receipt back.
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 on-chain, crossed = signed, and not settled on-chain.
L1 purchase history, newest first
Attempted atResultHTTPOn-chain txLatency
09-28 06:01settle_failed502—2621 ms
1000 units (≈ $0.001 USDC) · L2 not_checkedWhose side: not sorted: one failure so far

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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quartermaster.surewhynot.app/v1/balance — x402 purchase and probe record | vet402