Skip to content

Specifications

SimpulseID implements the following ENVITED-X Ecosystem Specifications (EVES), maintained at github.com/ASCS-eV/EVES.

EVES-008: SimpulseID Credential and Identity Framework

EVES-008 defines the identity, membership, and credential architecture for the ENVITED-X Data Space. It specifies:

  • Five credential types (Participant, Administrator, User, Base Membership, ENVITED Membership)
  • did:ethr identifiers anchored on Base (ERC-1056) with P-256 key management
  • JSON-LD context ordering and w3id.org persistent identifier resolution
  • Credential subject semantics (member vs memberOf, urn:uuid: for memberships)
  • Revocation via harbour:CRSetEntry
  • Schema-first approach using LinkML as the single source of truth

This repository is the reference implementation of EVES-008.

EVES-009 defines the protocol for generating and verifying cryptographic evidence of user consent. SimpulseID credentials use this protocol for evidence VPs:

  • Evidence VPs use the HARBOUR_DELEGATE challenge format with the credential.issue action type
  • The challenge binds consent to a specific credential via SHA-256 over canonical TransactionData
  • Verification follows OID4VP with KB-JWT transaction_data_hashes for message binding
  • SD-JWT VCs are the recommended format for selective disclosure

The evidence protocol is implemented by harbour-credentials (delegation.py, sd_jwt_vp.py). SimpulseID uses it via src/sign_examples.py.

External Standards

Standard Version Usage
W3C VC Data Model v2.0 Credential envelope structure
W3C DID Core v1.1 Decentralized identifier resolution
did:ethr Method — On-chain identity via ERC-1056
Gaia-X Trust Framework 25.11 (Loire) LegalPerson/NaturalPerson compliance
OID4VP 1.0 Evidence VP presentation protocol
RFC 9901 (SD-JWT-VC) — Selective disclosure credentials
LinkML — Schema definition language
schema.org — Vocabulary for program metadata