Figure 1. Probe timeline, last 1 probe for this endpoint (UTC). Filled = pass, crossed = fail, dashed = unverified. Same-day probes overlap.
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L0 probe history, newest first
Probed at
Method
Verdict
HTTP
Latency
Reason
2026-09-06 05:40 UTC
GET
pass
402
476 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.
0/1
Figure 2. Settle-through: one cell per paid attempt. Filled = settled with an on-chain receipt, crossed = paid but no receipt.
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L1 purchase history, newest first
Attempted at
Result
HTTP
Receipt (tx)
Latency
09-06 07:002026-09-06 07:00 UTC
settle_failed
503
—
8923 ms
50000 units (≈ $0.05 USDC) · L2 not_checked
4.Catalog listing events
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Catalog listing events, newest first
Detected on
Event
Before
After
2026-09-06
relisted
{"status":"delisted"}
{"status":"active"}
2026-09-02
delisted
{"status":"active"}
{"status":"delisted"}
2026-08-31
relisted
{"status":"delisted"}
{"status":"active"}
2026-08-22
delisted
{"status":"active"}
{"status":"delisted"}
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.