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checkdigit.openverbs.com

5 resources

Resource Activity

via Bazaar · last 30 days
Total calls
10
Unique payers
10
Est. volume (30d)
$0.02
~$0.00/day
Last called
Oct 8, 2026

Top resources by calls

ResourceCallsUnique payers
checkdigit.openverbs.comValidate a 15-digit mobile device IMEI by its Luhn check dig…22
checkdigit.openverbs.comValidate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 …22
checkdigit.openverbs.comValidate a 9-digit US ABA bank routing number by its weighte…22
checkdigit.openverbs.comValidate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 o…22
checkdigit.openverbs.comValidate a number by the Luhn (mod-10) algorithm — the schem…22

All Resources

checkdigit.openverbs.com
https://checkdigit.openverbs.com/v1/ean
Validate 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.
$0.002000 USDC
checkdigit.openverbs.com
https://checkdigit.openverbs.com/v1/imei
Validate a 15-digit mobile device IMEI by its Luhn check digit. Spaces and hyphens are ignored.
$0.002000 USDC
checkdigit.openverbs.com
https://checkdigit.openverbs.com/v1/isbn
Validate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 (GTIN mod-10) book number. Length after removing spaces/hyphens selects the scheme.
$0.002000 USDC
checkdigit.openverbs.com
https://checkdigit.openverbs.com/v1/luhn
Validate 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 digit is a successful { valid: false }.
$0.002000 USDC
checkdigit.openverbs.com
https://checkdigit.openverbs.com/v1/routing
Validate a 9-digit US ABA bank routing number by its weighted (3,7,1) mod-10 checksum. Spaces and hyphens are ignored.
$0.002000 USDC