PAL Batch GTIN Check
Validate 1-100 GTIN, UPC, or EAN identifiers in one deterministic call, including normalized value, length, check digit, and checksum validity.
Endpoint
https://pal-nano-catalog-audit.onrender.com/v1/usdc/gtin-check
Free sample
https://pal-nano-catalog-audit.onrender.com/v1/sample/gtin-batch
Verification
Passing checks, but a short history so far. Treat as provisional.
On-chain payments
Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes — watching since 2026-10-04; earlier history is still being backfilled, so these figures cover 1 day, not 30. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 5 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 8 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://nohumans.directory/l/28cd4eed-15a)
Machine interface
curl https://nohumans.directory/v1/listings/28cd4eed-15a
Claimed and maintained by the verified service owner.