PayProbe
HomeToolsStandardsLearnCredentialsNFCQRBlockchainProduct
Get Started
PayProbe Tools
39 available · 40 beta
Card Data
Card ValidatorIBAN ValidatorAmount FormatterLuhn AlgorithmTest Card GeneratorTrack 1 & 2 GeneratorCard Data Generator
EMV & Chip
EMV TLV DecoderEMV TLV BuilderEMV Tag ReferencePDOL / CDOL BuilderTVR DecoderAIP DecoderIAD DecoderCVM List DecoderTTQ DecoderCTQ DecoderAmex Reader Capabilities DecoderKernel 8 Qualifier DecoderMobile CVM Results DecoderCard Capabilities DecoderTSI DecoderAUC DecoderASN.1 / DER DecoderPOS Terminal EMV ConfigARQC / ARPC CalculatorCVV / CVC CalculatorCAVV CalculatorCAP Calculator
Cryptography & Keys
DES / 3DES CalculatorAES CalculatorMAC CalculatorHMAC & SHA HashesKCV CalculatorKey Block DecoderTR-31 Key BlockTR-34 Key DistributionTR-34 Protocol DiagramHSM Key ComposerKeyshare GeneratorUDK CalculatorPIN Block Encoder / DecoderPIN Verification (PVV)PIN Verification (IBM 3624)
Messaging
Payment Authorization FlowISO 8583 ParserISO 8583 Bitmap DecoderSWIFT MT / MX ValidatorIPM & CTF DecoderResponse Code ReferenceJulian Date Converter3DS2 AReq / ARes Decoder
Reference
BIN LookupMCC LookupCurrency & Country CodesRID & AID CatalogAPDU Response CodesService Code DecoderPOS Entry Mode DecoderChargeback Reason CodesInterchange Rate EstimatorPayment Crypto Glossary
Blockchain
Blockchain & Payments GlossaryWallet Address ValidatorBlockchain Tx DecoderCBDC Flow SimulatorCalldata & EIP-712 DecoderApproval & Address Risk CheckerTransaction Simulator
Utilities
HEX ↔ ASCII ConverterBase64 Encoder / DecoderBCD / Hex / Decimal ConverterCharacter Encoding ConverterHex Dump ViewerWebhook InspectorWebhook Signature VerifierTokenization TesterDispute SimulatorPayment Flow Builder
EMV Tag Reference
Tools/EMV Tag Reference/9F4B
Card (ICC)Format: bLength: var
9F4B

Signed Dynamic Application Data

Tag ID
9F4B
Format
b
Length (bytes)
var
Source
Card (ICC)

What it is

Card signature over dynamic data produced for DDADynamic Data AuthenticationOffline check where the card signs unique, per-transaction data with its own private key — proving the chip is genuine and not a clone.View in glossary →/CDACombined DDA / Application Cryptogram generationThe strongest offline authentication: the card signs the dynamic data and the transaction cryptogram together in one step, preventing tamper (“wedge”) attacks.View in glossary →.

Specification reference

Defined in: EMV 4.x Book 3 (Application Specification), Annex A — Data Element Dictionary

Decode & build this tag

🔓EMV TLV Decoder🔨EMV TLV Builder
← Previous9F4A Static Data Authentication Tag ListNext →9F4C ICC Dynamic Number
PayProbe

The developer-first platform for payment testing. Validate, simulate, and automate your entire payment test coverage — right in your browser.

Tools

  • Card Validator
  • EMV TLV Decoder
  • ISO 8583 Parser
  • BIN Lookup
  • Test Card Generator
  • All tools

Learn

  • ISO 8583 Guide
  • 3D Secure
  • Tokenization
  • Settlement
  • TR-31 & TR-34
  • Blockchain

Reference

  • Standards
  • Test Credentials
  • NFC Payments
  • QR Codes
  • Countries

Company

  • Product
  • About & Contact
  • Trust & Security
  • Status
  • Changelog
  • Privacy Policy
  • Terms of Service
© 2026 LLC PayProbe. All rights reserved.
Privacy PolicyTerms of Service