Independent MeasurementEndpoint record (L0 · L1)Published state: failLast probed: 2026-09-27 · today

underground.substratesymposium.com/buy/basil

1.Catalog declaration

Catalog declaration for this endpoint
Resource URL	https://underground.substratesymposium.com/buy/basil
Source	cdp_bazaar
Declared method	GET
Network	eip155:8453
Receiving address	0xa3babb36564b0383a82c617050306ee30fd18e08
Declared price (base units)	990000
Catalog status	active
First seen / last seen	2026-08-30 01:02 UTC / 2026-09-28 01:02 UTC
Catalog-reported calls / payers (30d)	1 / 1

2.Probe history

2026-09-042026-09-27

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 at	Method	Verdict	HTTP	Latency	Reason
2026-09-27 10:31 UTC	GET	fail	402	79 ms	price_mismatch
2026-09-23 10:30 UTC	GET	fail	402	34 ms	price_mismatch
2026-09-19 11:24 UTC	GET	fail	402	14 ms	price_mismatch
2026-09-17 11:24 UTC	GET	fail	402	16 ms	price_mismatch
2026-09-12 11:24 UTC	GET	fail	402	31 ms	price_mismatch
2026-09-09 11:24 UTC	GET	fail	402	19 ms	price_mismatch
2026-09-05 11:24 UTC	GET	fail	402	20 ms	price_mismatch
2026-09-04 11:24 UTC	GET	fail	402	23 ms	price_mismatch

3.L1 — real purchases

No paid purchases recorded for this endpoint yet.

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.