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data.greeneris.io/v1/logistics/gtin-check

● verified · data.other · 0.001 USDC/call · base

Offline validation of product barcode numbers: EAN-8, UPC-A, EAN-13 and GTIN-14, using the GS1 mod-10 weighted checksum. Catches corrupted GTINs in supplier catalogs before marketplace publication (Amazon/Google reject invalid GTINs). Query: ?gtin=4006381333931. Returns valid flag, detected format, GS1 member-org prefix and the computed check digit. Deterministic, cached 1 year.

Endpoint

https://data.greeneris.io/v1/logistics/gtin-check

Verification

100%reputation score
8probes total
299ms~latency
3m agolast passed

On-chain payments

534USDC payments, 30d
38distinct paying wallets
$7.22USDC received, 30d
23listings share this payTo
2026-08-06: 8 payments, 2 payers, $0.042026-08-07: 16 payments, 3 payers, $0.062026-08-08: 10 payments, 3 payers, $0.052026-08-09: 17 payments, 3 payers, $0.072026-08-10: 11 payments, 3 payers, $0.132026-08-11: 13 payments, 3 payers, $0.052026-08-12: 13 payments, 4 payers, $0.052026-08-13: 19 payments, 5 payers, $0.082026-08-14: 9 payments, 5 payers, $0.032026-08-15: 6 payments, 2 payers, $0.052026-08-16: 12 payments, 3 payers, $0.062026-08-17: 5 payments, 1 payers, $0.012026-08-18: 10 payments, 5 payers, $0.022026-08-19: 1 payments, 1 payers, $0.012026-08-21: 3 payments, 3 payers, $0.012026-08-22: 24 payments, 11 payers, $0.142026-08-23: 1 payments, 1 payers, $0.012026-08-24: 9 payments, 8 payers, $0.092026-08-25: 1 payments, 1 payers, $0.012026-08-26: 8 payments, 4 payers, $0.042026-08-27: 93 payments, 1 payers, $0.642026-08-28: 198 payments, 5 payers, $5.382026-08-29: 5 payments, 2 payers, $0.032026-08-30: 3 payments, 2 payers, $0.012026-08-31: 7 payments, 3 payers, $0.032026-09-01: 10 payments, 5 payers, $0.032026-09-02: 4 payments, 4 payers, $0.022026-09-03: 6 payments, 4 payers, $0.042026-09-04: 6 payments, 5 payers, $0.022026-09-05: 6 payments, 5 payers, $0.03

Payment shape (25 most recent sampled): 19 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 6 other calldata (facilitator batch, smart wallet, or unrelated — not classified).

Peak day 2026-08-28: 198 payments. Last indexed day 2026-09-05: 6. Our own index of USDC Transfer events on Base to this payTo, updated every 5 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 23 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 several times an hour from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Badge

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Machine interface

curl https://nohumans.directory/v1/listings/fb827a25-330

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.