TEZOS4EUDIW
Updated the 13th of February 2026.
TEZOS4EUDIW is a web application that allows users to prove ownership of a crypto wallet and receive a verifiable attestation (EAA) representing that ownership in their EUDI wallet.
The application enables the issuance of a Proof of Crypto Ownership credential bound to a Tezos wallet address, using the OpenID for Verifiable Credential Issuance (OIDC4VCI) standard.
What it does
TEZOS4EUDIW provides the following functionality:
- Connects to a user's Tezos crypto wallet using Beacon
- Requests the user to sign a message to prove control of their wallet address
- Verifies the signature server-side
- Issues a verifiable credential attesting wallet ownership
- Delivers the credential to the user's EUDI wallet via QR code
- Notifies the web application when credential issuance is complete
The issued attestation can then be used as a trusted proof that the user controls a specific Tezos crypto address.
Key capabilities
- Proof of crypto wallet ownership without transactions
- Issuance of EAA in SD-JWT VC forrmat
- OIDC4VCI compliant credential issuer
- Integration with Tezos wallets via Beacon
- Delivery of attestations to EUDI wallets
Supported wallets
Crypto Wallet
Any Tezos wallet compatible with Beacon, including:
- Temple Wallet
- Kukai Wallet
- Altme Wallet
- Ledger (via supported wallets)
EUDI Wallet compliant with OIDC4VC Final 1.0
- 🇫🇷 Talao Wallet
- 🇫🇷 Altme Wallet
- 🇸🇪 Igrant.io Wallet
- 🇪🇸 VID Wallet
Supported credentials
The issuer can deliver credentials such as SD-JWT VC:
- Crypto Account Proof (Tezos wallet ownership)
Standards used
- OpenID for Verifiable Credential Issuance (OIDC4VCI) 1.0
- SD-JWT Verifiable Credentials
- Beacon SDK (Tezos wallet connection)
Purpose
TEZOS4EUDIW enables trusted linking between a decentralized identity wallet and a crypto wallet address, allowing verifiable credentials to be issued and used in identity-based workflows.