passlisted in Coinbase#2 by calls of 177 on this host
0.01 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
- 2
- Unique payers, trailing 30 days
- 2
- Last called
- 2026-10-11 03:36 UTC
- First observed by TOLLderived
- 2026-10-09
- Pricederived
- 0.01 USDC
- Networks
- 2
How big is this endpoint among the ones like it?
No trace is drawn of this endpoint’s own volume. Its counters have changed 2 times across 10 observations, and 3 changes are the fewest this site will draw a trace through, because two points and a guess are not a series. Every observation is in the JSON.
underground.substratesymposium.com lists 177 endpoints; buy cards is tied 2nd by calls with 170 others.
buy cards declares an input block that names no parameters.
The declared response carries title, content, product and delivered_at.
buy cards drew 2 calls from 2 unique payers in the trailing 30 days, every call from a different payer.
buy cards was last called 2 days before the snapshot.
A call to buy cards costs 0.01 USDC on Base, as declared.
2 payment options span Base and Solana, to 2 different wallets.
buy cards is a GET endpoint at underground.substratesymposium.com, listed in the Coinbase registry and filed by TOLL under identity.
buy cards answered the sweep of 2026-10-29 with a valid 402, as at every sweep since 2026-10-09.
Closest in price to buy cards within identity: br pix parse at api.losbeto.xyz and verify job at livecheck.fly.dev.
buy cards is priced above 34% of comparable listings in identity.
Its payee wallet receives for 179 listed endpoints across 2 hosts.
The price of buy cards is declared by 707 other listings in identity too.
the payment options, as of 2026-10-13 14:08 UTC · method · pinnable
| registry | network | asset | amount | scheme | pay to |
|---|---|---|---|---|---|
| Coinbase | eip155: | USDC | 0.01 USDC | exact | 0xA3bAbB…d18E08 |
| Coinbase | solana: | USDC | 0.01 USDC | exact | 5HK2dGaa…tX1tkN |
the checks, as of 2026-10-29 06:09 UTC · method · pinnableendpoint answered HTTP 402
No named check failed.
Every sweep that observed this endpoint, newest first.
| observed, UTC | state | failed checks | sweep |
|---|---|---|---|
| 2026-10-29 06:09 UTC | pass | 0 | daily-2026-10-29 |
| 2026-10-28 06:32 UTC | pass | 0 | daily-2026-10-28 |
| 2026-10-27 06:25 UTC | pass | 0 | daily-2026-10-27 |
| 2026-10-26 11:46 UTC | pass | 0 | daily-2026-10-26 |
| 2026-10-24 21:08 UTC | pass | 0 | daily-2026-10-24 |
| 2026-10-23 06:18 UTC | pass | 0 | daily-2026-10-23 |
| 2026-10-22 04:33 UTC | pass | 0 | daily-2026-10-22 |
| 2026-10-21 08:12 UTC | pass | 0 | daily-2026-10-21 |
| 2026-10-20 08:28 UTC | pass | 0 | daily-2026-10-20 |
| 2026-10-19 06:02 UTC | pass | 0 | daily-2026-10-19 |
| 2026-10-18 08:15 UTC | pass | 0 | daily-2026-10-18 |
| 2026-10-17 18:16 UTC | pass | 0 | daily-2026-10-17 |
| 2026-10-16 04:30 UTC | pass | 0 | daily-2026-10-16 |
| 2026-10-15 06:03 UTC | pass | 0 | daily-2026-10-15 |
| 2026-10-14 04:27 UTC | pass | 0 | daily-2026-10-14 |
| 2026-10-13 08:53 UTC | pass | 0 | daily-2026-10-13 |
| 2026-10-12 06:18 UTC | pass | 0 | daily-2026-10-12 |
| 2026-10-11 04:41 UTC | pass | 0 | daily-2026-10-11 |
| 2026-10-10 09:58 UTC | pass | 0 | daily-2026-10-10 |
| 2026-10-09 22:46 UTC | pass | 0 | new-after-daily-2026-10-09 |
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 2026-10-11 03:36 UTC · method · live
The input and output block
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"title": "Cards",
"content": "Reincarnation romance across time periods for exploring identity persistence and transformation.",
"product": "cards",
"delivered_at": "2026-04-24T10:00:00Z"
}
}
}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, "buy cards on underground.substratesymposium.com", snapshot of 2026-10-13 14:08 UTC. https://tollindex.com/e/underground-substratesymposium-com-buy-cards-1a993a/at/2026-10-13T14-08Z. Accessed [access date].
BibTeX
@misc{toll-e-underground-substratesymposium-com-buy-cards-1a993a-2026-10-13T14-08Z,
author = {TOLL},
title = {buy cards on underground.substratesymposium.com},
howpublished = {\url{https://tollindex.com/e/underground-substratesymposium-com-buy-cards-1a993a/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.