checkdigit.openverbs.com
LiveGov/Regulatory/ProductValidate 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. (the service's own listing text)
19/19Recent Test Calls That Worked
513 msTypical Response Time (slow end: 953 ms)
$0.002 / $0.002Listed / Actual Price: match
Same AddressPayment Address (payTo): the same on all 18 checks of the main route
3Directories Listing It
15 min agoLast Checked (2026-10-24T09:31:02Z)
Listed Vs. Actual Price
Listed = the price in the directory listing today, for the main route we test. Actual = the price that route asked for when we called it (from our signed records). Some differences are normal, like prices that depend on the request.
| Period | Listed | Actual | Result |
|---|---|---|---|
| Recent Checks | $0.002 | $0.002 | Matches Listing |
Latest Signed Records
| Signed Record | Time (UTC) | Reply | Asked For Payment Correctly | ms | Price Asked |
|---|---|---|---|---|---|
| 0bdcb9f1cd0e25c9a4d2 | 2026-10-24T09:31:02Z | 402 | Yes | 467 | $0.002 |
| 134b05fa56638cbb8a32 | 2026-10-24T09:01:02Z | 402 | Yes | 1029 | $0.002 |
| ed1cb006cd25a5d40aa0 | 2026-10-24T08:29:28Z | 402 | Yes | 374 | $0.002 |
| 79633b7648b50f943144 | 2026-10-24T08:10:53Z | 402 | Yes | 217 | $0.002 |
| 90a255e36f43deb221f1 | 2026-10-24T07:41:13Z | 402 | Yes | 953 | $0.002 |
Every record is digitally signed, so anyone can verify it. More: raw data page · free quick check (JSON)