passlisted in Coinbase#1 by calls of 8 on this host
0.005 USDC
per call, as the listing declares it on eip155:
- Validation state
- pass
- Uptime, 7 / 30 / 90 days
- 100% / 100% / 100%
- Calls, trailing 30 days
- 8
- Unique payers, trailing 30 days
- 4
- Last called
- 2026-10-08 21:47 UTC
- First observed by TOLLderived
- 2026-09-10
- Pricederived
- 0.005 USDC
- Networks
- 1
How has the volume on this endpoint moved?
verify citation answers POST requests at goodsong.dev; it is listed in the Coinbase registry and TOLL files it under identity.
verify citation is priced at 0.005 USDC on Base.
The request to verify citation is a json body with the fields doi and title.
A response from verify citation, as declared, includes cost, checks, verdict, evidence, canonical and latency_ms.
verify citation answered the sweep of 2026-10-21 with a valid 402, as at every sweep since 2026-09-11.
Of goodsong.dev's 8 listings, verify citation ranks 1st by calls.
32% of the host's counted calls go to it.
verify citation drew 8 calls from 4 unique payers in the trailing 30 days.
The last call to verify citation came 5 days before the snapshot, 2026-10-08.
Closest in price to verify citation within identity: by username at x402.twit.sh and my usage at agent402.tools.
verify citation is priced above 21% of comparable listings in identity.
Within identity, 91% of endpoints with counters have fewer calls.
The wallet paid by verify citation is the payee of 8 endpoints on one host.
The seller's tags on verify citation are citation, fact-check, hallucination and retraction.
228 other listings in identity declare exactly the same price.
the payment options, as of 2026-10-13 14:08 UTC · method · pinnable
| registry | network | asset | amount | scheme | pay to |
|---|---|---|---|---|---|
| Coinbase | eip155: | USDC | 0.005 USDC | exact | 0xf3b36a…e58de1 |
the checks, as of 2026-10-21 10:15 UTC · method · pinnableendpoint answered HTTP 402
No named check failed.
Every sweep that observed this endpoint, newest first.
| observed, UTC | state | failed checks | sweep |
|---|---|---|---|
| 2026-10-21 10:15 UTC | pass | 0 | daily-2026-10-21 |
| 2026-10-20 09:45 UTC | pass | 0 | daily-2026-10-20 |
| 2026-10-19 07:22 UTC | pass | 0 | daily-2026-10-19 |
| 2026-10-18 09:29 UTC | pass | 0 | daily-2026-10-18 |
| 2026-10-17 19:34 UTC | pass | 0 | daily-2026-10-17 |
| 2026-10-16 05:41 UTC | pass | 0 | daily-2026-10-16 |
| 2026-10-15 07:21 UTC | pass | 0 | daily-2026-10-15 |
| 2026-10-14 05:34 UTC | pass | 0 | daily-2026-10-14 |
| 2026-10-13 10:09 UTC | pass | 0 | daily-2026-10-13 |
| 2026-10-12 07:32 UTC | pass | 0 | daily-2026-10-12 |
| 2026-10-11 06:05 UTC | pass | 0 | daily-2026-10-11 |
| 2026-10-10 14:14 UTC | pass | 0 | daily-2026-10-10 |
| 2026-10-09 06:36 UTC | pass | 0 | daily-2026-10-09 |
| 2026-10-08 08:04 UTC | pass | 0 | daily-2026-10-08 |
| 2026-10-07 07:18 UTC | pass | 0 | daily-2026-10-07 |
| 2026-10-06 08:07 UTC | pass | 0 | daily-2026-10-06 |
| 2026-10-05 07:30 UTC | pass | 0 | daily-2026-10-05 |
| 2026-10-04 10:08 UTC | pass | 0 | daily-2026-10-04 |
| 2026-10-03 05:05 UTC | pass | 0 | daily-2026-10-03 |
| 2026-10-02 14:23 UTC | pass | 0 | daily-2026-10-02 |
| 2026-10-01 07:21 UTC | pass | 0 | daily-2026-10-01 |
| 2026-09-30 06:39 UTC | pass | 0 | daily-2026-09-30 |
| 2026-09-29 18:58 UTC | pass | 0 | daily-2026-09-29 |
| 2026-09-28 05:46 UTC | pass | 0 | daily-2026-09-28 |
| 2026-09-25 20:31 UTC | pass | 0 | daily-2026-09-25 |
| 2026-09-23 06:09 UTC | pass | 0 | daily-2026-09-23 |
| 2026-09-22 06:19 UTC | pass | 0 | daily-2026-09-22 |
| 2026-09-21 06:42 UTC | pass | 0 | daily-2026-09-21 |
| 2026-09-20 19:21 UTC | pass | 0 | daily-2026-09-20 |
| 2026-09-19 04:43 UTC | pass | 0 | daily-2026-09-19 |
| 2026-09-18 10:37 UTC | pass | 0 | daily-2026-09-18 |
| 2026-09-17 04:39 UTC | pass | 0 | daily-2026-09-17 |
| 2026-09-16 04:40 UTC | pass | 0 | daily-2026-09-16 |
| 2026-09-15 04:37 UTC | pass | 0 | daily-2026-09-15 |
| 2026-09-14 04:33 UTC | pass | 0 | daily-2026-09-14 |
| 2026-09-13 04:32 UTC | pass | 0 | daily-2026-09-13 |
| 2026-09-12 06:47 UTC | pass | 0 | daily-2026-09-12 |
| 2026-09-11 10:21 UTC | pass | 0 | daily-2026-09-11 |
Presence in a registry, not liveness of the service (method). Newest first.
- listed in Coinbase
From the registry record, not validated by TOLL.the declared schema, as of 2026-10-08 21:47 UTC · method · live
The input and output block
{
"input": {
"body": {
"doi": "10.1126/science.1260419",
"title": "Tissue-based map of the human proteome"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"cost": {
"amount": "0.005",
"currency": "USDC"
},
"checks": {
"exists": true,
"retracted": false,
"year_match": true,
"title_match": true,
"authors_match": true,
"journal_match": null
},
"verdict": "confirmed",
"evidence": [
{
"url": "https://api.crossref.org/works/10.1126/science.1260419",
"source": "crossref",
"retrieved_at": "2026-08-30T12:00:00Z"
}
],
"canonical": {
"doi": "10.1126/science.1260419",
"year": 2015,
"title": "Tissue-based map of the human proteome",
"authors": [
"Mathias Uhlén",
"Linn Fagerberg"
],
"journal": "Science",
"year_candidates": [
2015
]
},
"latency_ms": 312
}
}
}Cite this page
The pinned URL below renders this page from the snapshot of 2026-10-13 14:08 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).
Plain text
TOLL, "verify citation on goodsong.dev", snapshot of 2026-10-13 14:08 UTC. https://tollindex.com/e/goodsong-dev-verify-citation-478e70/at/2026-10-13T14-08Z. Accessed [access date].
BibTeX
@misc{toll-e-goodsong-dev-verify-citation-478e70-2026-10-13T14-08Z,
author = {TOLL},
title = {verify citation on goodsong.dev},
howpublished = {\url{https://tollindex.com/e/goodsong-dev-verify-citation-478e70/at/2026-10-13T14-08Z}},
year = {2026},
month = {10},
note = {Pinned view of the snapshot of 2026-10-13 14:08 UTC. Accessed [access date].}
}None yet. Anything submitted through the form below is published here with its outcome.