> ## Documentation Index
> Fetch the complete documentation index at: https://docs.didx.co.za/llms.txt
> Use this file to discover all available pages before exploring further.

# Standards and specifications

> Specifications implemented by didx:me.

didx:me implements the following open specifications.

| Specification                                                                                                                    | Description                                                                                           | Use in didx:me                                                                    |
| -------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------- |
| [W3C Verifiable Credentials Data Model 2.0](https://www.w3.org/TR/vc-data-model-2.0/)                                            | Data model for cryptographically verifiable claims about a subject.                                   | Defines the structure of a credential and the issuer, holder, and verifier roles. |
| [SD-JWT VC](https://datatracker.ietf.org/doc/draft-ietf-oauth-sd-jwt-vc/)                                                        | IETF draft for verifiable credentials encoded as selectively disclosable JWTs.                        | Credential format. JSON-encoded.                                                  |
| [ISO/IEC 18013-5](https://www.iso.org/standard/69084.html)                                                                       | ISO standard for mobile documents (mDoc, mDL).                                                        | Credential format. CBOR-encoded.                                                  |
| [OpenID for Verifiable Credential Issuance](https://openid.net/specs/openid-4-verifiable-credential-issuance-1_0.html) (OID4VCI) | Protocol for issuing credentials from an issuer to a holder's wallet.                                 | Issuance flow.                                                                    |
| [OpenID for Verifiable Presentations](https://openid.net/specs/openid-4-verifiable-presentations-1_0.html) (OID4VP)              | Protocol for presenting credentials from a holder's wallet to a verifier.                             | Presentation flow.                                                                |
| Trust anchor framework                                                                                                           | Issuer DIDs for SD-JWT credentials; x509 certificates (CSR-issued) for mDoc. ETSI LoTE not supported. | Mechanism by which verifiers declare which issuers they accept.                   |