Seal Studio

Issue and verify Visible Digital Seals.

Choose a document, sign it with the demo signer and get a QR code or Data Matrix. Then read it back and check the signature.

Checking API

Any format

Verify any seal

Paste what a scanner read. VDS-NC, ICAO TR and IDB seals are recognised automatically and their signature is checked.

3 documents

Proof of Testing
Generate a VDS-NC Proof of Testing seal: QR code, Data Matrix and the Base64URL payload.
- VDS-NC
- IDB
Proof of Vaccination
Generate an IDB v1.10 Proof of Vaccination seal as a Data Matrix.
- IDB
Proof of Recovery
Generate an IDB v1.10 Proof of Recovery seal as a Data Matrix.
- IDB

5 documents

Visa
Generate an ICAO TR binary visa seal (magic 0xDC) as a Data Matrix that Sealva and vdstools can scan.
- ICAO TR
- IDB
Emergency Travel Document
Generate an IDB v1.10 Emergency Travel Document seal from a TD2 MRZ (2 lines of 36).
- IDB
Digital Travel Authorization
Generate an IDB v1.10 Digital Travel Authorization seal as a Data Matrix.
- IDB
Machine readable zone
Seal the machine readable zone of an ID card: 3 lines of 30 characters.
- TD1 · ID card
- TD3 · Passport
Card Access Number
Seal the 6 digit Card Access Number that unlocks a contactless document chip.
- IDB