QR code payments

UPI, PIX, EPC/SEPA, EMVCo and crypto payment codes — field by field, from the actual specs.

• A UPI QR code for a small shopGenerate a static code from your VPA with no amount, print it at 4 cm or larger on matt stock, put your business name in large text beside it, and check…
• QR payment standards compared: UPI, PIX, EPC, EMVCoUPI uses its own upi:// deep link; PIX, PromptPay, QRIS, DuitNow and PayNow are all EMVCo tag-length-value profiles; EPC uses a twelve-line text block.…
• Static vs dynamic UPI QR codesA static UPI code omits the amount, so the customer types it — that is the printed shop standee, generated once and used forever. A dynamic code sets am…
• The EPC QR code format (GiroCode), line by lineAn EPC QR code is twelve lines of text in fixed order, starting with BCD and containing the beneficiary name, IBAN and optionally an amount. The whole…
• The PIX QR code format: EMV BR Code explainedA PIX QR code is an EMVCo BR Code: tag-length-value fields ending in a CRC16/CCITT-FALSE checksum. The same string is also copia e cola, which people…
• The UPI QR code format, parameter by parameterA UPI QR code is a upi://pay deep link. pa (the VPA) and pn (payee name) are required; am, cu, tn, tr, mc and mode are optional. NPCI standardised it, so…
• PIX key types, and which to use on a printed codeA PIX key can be a CPF, CNPJ, email, phone number or a random EVP UUID. For anything printed publicly, use a random EVP key: it works identically but…