Independent MeasurementEndpoint record (L0 · L1)Published state: passLast probed: 2026-09-02 · today

qr-api-production-1836.up.railway.app/decode

1.Catalog declaration

Catalog declaration for this endpoint
Resource URL	https://qr-api-production-1836.up.railway.app/decode
Source	cdp_bazaar
Declared method	POST
Network	eip155:8453
Receiving address	0xffc458db291b4abce020fe3de4f91f2770e537b1
Declared price (base units)	1000
Catalog status	active
First seen / last seen	2026-08-14 08:52 UTC / 2026-09-02 01:03 UTC
Catalog-reported calls / payers (30d)	3 / 2

2.Probe history

2026-08-302026-09-02

Figure 1. Probe timeline, last 2 probes for this endpoint (UTC). Filled = pass, crossed = fail, dashed = unverified. Same-day probes overlap.

L0 probe history, newest first
Probed at	Method	Verdict	HTTP	Latency	Reason
2026-09-02 05:40 UTC	POST	pass	402	171 ms	—
2026-08-30 11:24 UTC	POST	pass	402	95 ms	—

3.L1 — real purchases

0 of 1 paid attempts settled with a receipt. Each settled row carries its on-chain transaction hash — the receipt is the evidence.

0/1

Figure 2. Settle-through: one cell per paid attempt. Filled = settled with an on-chain receipt, crossed = paid but no receipt.

L1 purchase history, newest first
Attempted at	Result	Receipt (tx)	Latency
09-02 01:002026-09-02 01:00 UTC	settle_failed	—	1416 ms
1000 units (≈ $0.001 USDC) · HTTP 422 · L2 not_checked

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.