You can also validate the CRC of a PIX QR code payload.
import { isValidCrc } from "@pix.js/validator";const isValid = isValidCrc("00020101021226870014br.gov.bcb.pix0114000000000000000002000000000000005204000053039865802BR5913PIX.JS6009SAO PAULO610805409000620705000000000000006304");// isValid will be true