{"id":"t/dic_cz_validate","kind":"forged","name":"dic_cz_validate","description":"Offline validator for a Czech DIČ (VAT/tax ID): normalizes input, strips spaces/dashes, checks for 'CZ' prefix, then validates the remaining digits either as an 8-digit IČO (mod-11 checksum with weights 8..2 on the first 7 digits) or as a 9-10 digit rodné číslo (birth number, valid month 01-12/21-32/51-62/71-82, and for 10-digit numbers the full number must be divisible by 11).","tags":["validator","czech-republic","vat","tax-id","offline"],"method":"POST","path":"/v1/t/dic_cz_validate","url":"https://toll402.dev/v1/t/dic_cz_validate","specUrl":"https://toll402.dev/v1/spec/t/dic_cz_validate","price":"$0.001","priceUsd":0.001,"available":true,"inputSchema":{"type":"object","properties":{"dic":{"type":"string","description":"Czech DIČ, e.g. CZ12345679 or CZ900101/0007"}},"required":["dic"]},"example":{"dic":"CZ12345679"},"meta":{"creator":null,"createdAt":"2026-09-10T00:43:23.695Z","calls":2,"failures":1,"network":false,"notes":"Pure offline validator: strips spaces/dashes/slashes, requires CZ prefix, then checks remaining digits as an 8-digit IČO using the standard mod-11 weighted checksum (weights 8..2) or as a 9/10-digit rodné číslo validating the month field (01-12/21-32/51-62/71-82) and, for 10-digit numbers, divisibility of the whole number by 11 via BigInt; no external data sources used."}}