Visible Digital Seal International Council
Member Portal
A single home for VDSIC members and partners — curated documentation, specifications, trust-list resources and developer tools for building and verifying the Visible Digital Seal.
What is a VDS?
Trust you can scan
A Visible Digital Seal (VDS) is a tamper-proof, cryptographically-signed 2D code — a QR code, barcode or RFID tag — that embeds a document’s key data, electronically signed by its issuer. Anyone can scan it with a simple mobile app to confirm the data is intact and to authenticate who issued it.
VDSIC governs the global trust environment behind every seal: it accredits Scheme Operators, Certificate Authorities and VDS Service Providers against the ISO 22376 and ISO 22385 standards, so a seal issued anywhere can be verified everywhere.
Explore the ecosystem
Accreditation 
Bank details 
Diploma 
License Members get
Everything in one place
Four resource areas, kept current with the latest specification and trust infrastructure.
Documentation
The complete technical reference for VDS — ecosystem, specifications and conformance.
Open →Specifications & Standards
VDS-TS0 specification and ISO 22376 / 22385 alignment for every scheme actor.
Open →Trust Lists & Schemas
Governance List (Root LoTL), Scheme Lists, TSLs and the XSD schemas.
Open →Tools & SDKs
The Otentik Codes Reader, verification CLI and developer SDKs.
Open →Why VDS
Security made legible
Strong Authentication
Every seal is cryptographically signed by an accredited issuer, so its origin can be proven — not just claimed.
Tamper-Proof Integrity
A two-step hash over header and payload means any alteration after signing invalidates the seal instantly.
Offline Verification
Cached trust lists let a verifier validate a seal with no network connection — anywhere, any time.
Otentik Codes Reader
One reader to read them all
A VDS can live in a QR code, a barcode or an RFID tag — all read by one flexible, accessible app that performs the full trust-chain verification, even offline.
Join the trust environment
VDSIC accredits Scheme Operators, Certificate Authorities and issuers worldwide. If your organization issues or verifies sensitive documents, the portal is your starting point.
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