checkdigit.openverbs.com
Route probed: GET https://checkdigit.openverbs.com/v1/ean
Category: eat:gov/regulatory/product (tags: commerce, payments) · Status: listing listed, probe active · Listing: 0.002 USD, 2 payers / 2 calls (30d, Bazaar) · Listed in: agentic-market, cdp-bazaar
Last probe: 2026-10-23T15:08:29Z (1 h ago) · Recent valid 402: 2/2 · p50 1389 ms
probe-only: no paid test-buys yet. No index until 3 paid buys on 3 different days.
Badge: 
Paid test-buys
None yet.
402 challenge checks (since 2026-10-23T15:08:29Z)
1 valid 402s checked: terms consistent 1, Base USDC offered 1, price matches listing 1 (differs 0), payTo changed vs previous probe 0.
Unpaid probes (newest first, up to 200; raw receipts are kept 7 days, then in the archive)
| Receipt | UTC time | Method | Status | Valid 402 | ms | Listed amount (atomic) | Quoted amount (atomic) | Quoted payTo | Header bytes | Response sha256 | Signed | Route | Checks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 649664723354d0e96903 | 2026-10-23T15:08:29Z | GET | 402 | yes | 1389 | 2000 | 2000 | 0xb3f4de10… | 2020 | cb575320c41699cf | per-receipt | primary | terms ok · Base USDC |
| ba55f6e821ff7703a0d9 | 2026-10-23T12:44:02Z | GET | 402 | yes | 164 | 2000 | 2000 | 0xb3f4de10… | 2020 | 8a054e177d09a4c5 | snapshot | primary |
Other listed routes
https://checkdigit.openverbs.com/v1/eanValidate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard mod-10 check digit. Length selects the scheme. (cdp-bazaar)https://checkdigit.openverbs.com/v1/imeiValidate a 15-digit mobile device IMEI by its Luhn check digit. Spaces and hyphens are ignored. (cdp-bazaar)https://checkdigit.openverbs.com/v1/isbnValidate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 (GTIN mod-10) book number. Length after removing spaces/hyphens selects the scheme. (cdp-bazaar)https://checkdigit.openverbs.com/v1/luhnValidate a number by the Luhn (mod-10) algorithm — the scheme behind credit/debit card numbers and many IDs. Spaces and hyphens are ignored. A mismatched check (cdp-bazaar)https://checkdigit.openverbs.com/v1/routingValidate a 9-digit US ABA bank routing number by its weighted (3,7,1) mod-10 checksum. Spaces and hyphens are ignored. (cdp-bazaar)
Seller? Reply or dispute. Amounts are in the asset's atomic units (USDC: 6 decimals).