What the provider says
Signed daily traffic snapshot from a live x402 merchant endpoint. Pay $1.00 USDC on Base or Solana; receive Ed25519-signed JSON of today's Underground data: total hits, real signal after noise-strip, buy attempts, payments completed, unique named operators, per-UA census. CC0 for citation. Ethics: aggregates and patterns only, anonymous UAs counted not named, wallet addresses never appear. Cached 60s.
Quoted from x402 Bazaar
· source record
· read 2026-10-26
Facts and where they come from
- Price
-
1 USDC per call
Provider claim
Recorded value: 1 USDC per call.
- Unit
- per call
- Protocol
-
x402, REST
· transport: HTTP
Provider claim
- Auth
- x402
- Last checked
-
Not checked by us yet — the data is as the source published it
- First seen
- 2026-10-24
- Usage
-
1 calls
· 1 unique payers
in the 30 days before 2026-10-24.
Measured by the x402 Bazaar, not by us and not by the provider.
Payments and earnings
Verified earnings · 30d
Unknown
Measured days
0/30
Settled payments
—
Ledger computed
never
No settled payment on record. Earnings for this service are unknown — not zero.
The source counts 1 calls in 30 days, which at the
published price is roughly $1.00 of
activity. Activity is not revenue; no charge has been reconciled for it.
Payment rails
Solana
· exact · USDC
5HK2dGaaquDWFnYWaWhMzMYtbcDsqeq5biJ2PMtX1tkN
1 USDC
From source record
Base
· exact · USDC
0xA3bAbB36564b0383a82c617050306EE30fd18E08
1 USDC
From source record
A payment rail is where the provider asks to be paid. It is not proof that anything was paid
through it. See evidence levels.
Input and output, as published
Request
{
"method": "GET",
"queryParams": [],
"type": "http"
}
Response
{
"example": {
"content": "Signed daily snapshot of the Underground's traffic - aggregates only",
"delivered_at": "2026-07-19T18:00:00Z",
"product": "data_daily",
"title": "Data Daily"
},
"type": "json"
}
Examples are the provider's own, not a call we made.
Provenance
One row per statement. “Verified” means we checked it ourselves and the finding is quoted.
“Provider claim” means we read it in the provider's own record. “Not found” is a statement about
our search, not proof of absence.
| Statement |
Status |
What we found |
Source |
Checked |
|
Endpoint
|
Provider claim |
https://underground.substratesymposium.com/api/data-daily
Evidence
Als Resource-URL im Bazaar-Eintrag geführt.
|
api.cdp.coinbase.com
|
2026-10-26 |
|
Input output
|
Provider claim |
Request/response examples published with the listing
Evidence
Beispiel-Ein- und -Ausgabe stammen aus dem Bazaar-Eintrag des Anbieters.
|
api.cdp.coinbase.com
|
2026-10-26 |
|
Payment
|
Provider claim |
2 rails: Base, Solana · payee 0xA3bAbB36564b0383a82c617050306EE30fd18E08
Evidence
Aus den `accepts`-Einträgen: Netzwerk, Asset, Empfängeradresse und Betrag. Die Adresse ist die Grundlage der späteren On-Chain-Zuordnung; sie ist noch nicht durch eine eigene 402-Antwort bestätigt.
|
api.cdp.coinbase.com
|
2026-10-26 |
|
Pricing
|
Provider claim |
1 USDC per call
Evidence
Atomic amount 1000000 = 1 USDC per call on Base. 2 payment options published. Netzwerk: Base, Solana.
|
api.cdp.coinbase.com
|
2026-10-26 |
|
Protocol
|
Provider claim |
x402 (HTTP 402 payment challenge)
Evidence
Im x402 Bazaar als zahlungspflichtige HTTP-Ressource gelistet (x402Version 2, Typ http).
|
api.cdp.coinbase.com
|
2026-10-26 |
|
Provider
|
Provider claim |
underground.substratesymposium.com
Evidence
Die Ressource wird unter diesem Host im x402 Bazaar geführt; die Angaben stammen vom Anbieter.
|
api.cdp.coinbase.com
|
2026-10-26 |
|
Usage
|
Verified |
1 calls / 1 unique payers in the last 30 days
Evidence
Source-reported usage from Coinbase x402 Bazaar, read on 2026-10-26. Letzter Aufruf laut Quelle: 2026-10-09T21:59:54.196Z. Aufrufe sind kein Umsatz.
|
api.cdp.coinbase.com
|
2026-10-26 |
Endpoint checks
We have not called this endpoint yet. Until we do, everything above is what the source
published — no more.