Credential formats
Tamga credentialsBelge verenin imzaladığı ve kişinin cüzdanında duran dijital belge; kişi yalnız istenen alanları gösterir. are issued in two standard formats. Both are the formats of the EU digital identity wallet.
| SD-JWT VC | ISO mdoc (ISO/IEC 18013-5) | |
|---|---|---|
| Where | Presentation over the internet (website, employer, institution) | In-person presentation (gate, turnstile, counter) and identity |
| Structure | JSON; every field can be withheld on its own | CBOR; fields in namespaces, with signed digests |
| Type | vct = urn:tamga:<domain>:<Type>:<version> | docType |
| Holder binding | cnf key; a device signature with every presentation (KB-JWT) | device key; a device signature bound to the session |
The identity credential is issued in both formats (SD-JWT VC (Selective Disclosure JWT Verifiable Credential)Selective disclosure destekli JSON tabanlı belge biçimi; EUDI Wallet'ta ve Tamga'da çevrimiçi gösterme için kullanılır. and mdocISO/IEC 18013-5 mobil belge biçimi, CBOR ile kodlanır; yüz yüze gösterme ve mobil ehliyet için kullanılır., bound to the same device key); the other credentials are SD-JWT VC today. The device signature, a KB-JWT (Key Binding JWT)Cüzdanın gösterme anında belge anahtarıyla imzaladığı kısa belirteç; anahtarın belge sahibinde olduğunu kanıtlar., proves that the credential is bound to the key on that phone (holder bindingBelgeyi yalnız belge sahibinin cihazındaki bir anahtara bağlamak; kopyalanan belge gösterilemez.).
Credential types and the catalogue
The definition of every credential type (display names, fields, which fields can be withheld) and its JSON Schema are in the catalogue at https://schemas.tamga.network/v1/catalogue.json. A credential is bound to its type definition (vct (Verifiable Credential Type)SD-JWT VC'de belge türünün kalıcı kimliği; Tamga'da urn:tamga:edu:Diploma:1 gibi bir URN'dir.) by the vct#integrity digest; the verifier checks that the definition has not changed.
| Type | Issued by |
|---|---|
urn:tamga:edu:StudentCredential:1 | university |
urn:tamga:edu:DiplomaCredential:1 | university |
urn:tamga:id:IdentityAttestation:1 | identity service (provisional, until the state identity credential arrives) |
urn:tamga:tkt:EventTicket:1 | ticket seller |
urn:tamga:contact:EmailAddress:1, PhoneNumber:1 | identity service |
Details
- Credential format: SPEC-CRED-0001, SD-JWT VC profile: SPEC-CRED-0002
- Schema catalogue: SPEC-SCHEMA-0001, education: SPEC-SCHEMA-0002, sectors: SPEC-SCHEMA-0003
- Packages:
@tamga-network/sd-jwt,@tamga-network/mdoc,@tamga-network/schemas