Introduction

Empeiria's End-to-End Verifiable Data Infrastructure (EVDI) is a complete platform for building applications with Self-Sovereign Identity. This section takes you from zero to issuing and verifying your first credential.

What is EVDI?

EVDI is the infrastructure layer that lets you add cryptographically verifiable data to any application without building your own identity stack or wrestling with evolving standards. It provides standards-based services and REST APIs to:

• Create decentralized identifiers — generate did:web and did:key (Ed25519) DIDs, with DID documents served for you over HTTPS.

• Define credential schemas — describe the claims a credential carries and the formats it supports.

• Issue Verifiable Credentials over OpenID4VCI, in SD-JWT VC and JWT-VC-JSON formats.

• Verify presentations over OpenID4VP, using DCQL or DIF Presentation Exchange queries.

All of this runs as off-chain services, so you can issue and verify credentials in real time through a standards-based API.

This platform issues and verifies credentials off-chain with did:web and did:key. The did:empe method and EMPE blockchain are separate components of the wider Empeiria ecosystem — see EVDI Architecture.

From here, try the live demo to see credentials in action, or follow the Tutorial to build issuance and verification into your own app.