# Veramo data model

## v2.0

### Simplified

erDiagram
    
    Identifier }|--|{ Key: keys
    Identifier }o--o{ Service: services
    
    Claim ||--|| Identifier: issuer
    Claim |o--o| Identifier: subject
    
    Credential ||--|{ Claim: claims
    Credential ||--|| Identifier: issuer
    Credential |o--o| Identifier: subject
    
    Presentation }|--|{ Credential: credentials
    Presentation ||--|| Identifier: holder
    Presentation ||--o{ Identifier: verifier

    Message ||--|| Identifier: from
    Message ||--|{ Identifier: to
    Message }|--|{ Credential: credentials
    Message }|--|{ Presentation: presentations
    
    

### Detailed

erDiagram
    
    Identifier {
        string did
        string provider
        string alias
        key keys
        service services
    }
    
    Key {
        string kid
        string kms
        string type
        string publicKey
        string meta
    }
    
    Service {
        string id
        string type
        string serviceEndpoint
        string description
        Identifier identifier
    }
    
    Claim {
        string hash
        Identifier issuer
        Identifier subject
        Credential credential
        Date issuanceDate
        Date expirationDate
        simple-array context
        simple-array credential-type
        string type
        string value
        boolean isObj
    }
    
    Credential {
        string hash
        simple-json raw
        Identifier issuer
        Identifier subject
        string id
        Date issuanceDate
        Date expirationDate
        simple-array context
        simple-array type
        Claim claims
        Presentation presentations
        Message messages
    }
    
    Presentation {
        string hash
        simple-json raw
        Identifier holder
        Identifier verifier
        string id
        Date issuanceDate
        Date expirationDate
        simple-array context
        simple-array type
        Credential credentials
        Message messages
    }
    
    Message {
        string id
        Date saveDate
        Date updateDate
        Date createdAt
        Date expiresAt
        string threadId
        string type
        string raw
        simple-json data
        simple-array reply-to
        string replyUrl
        Identifier from
        Identifier to
        simple-json metaData
        Presentation presentations
        Credential credentials
    }
    
    Identifier }|--|{ Key: keys
    Identifier }o--o{ Service: services
    
    Claim ||--|| Identifier: issuer
    Claim |o--o| Identifier: subject
    
    Credential ||--|{ Claim: claims
    Credential ||--|| Identifier: issuer
    Credential |o--o| Identifier: subject
    
    Presentation }|--|{ Credential: credentials
    Presentation ||--|| Identifier: holder
    Presentation ||--o{ Identifier: verifier

    Message ||--|| Identifier: from
    Message ||--|{ Identifier: to
    Message }|--|{ Credential: credentials
    Message }|--|{ Presentation: presentations
    
    

## v3.0

### Simplified

erDiagram
    
    Identifier }|--|{ Key: keys
    Identifier }o--o{ Service: services
    
    Claim ||--|| Identifier: issuer
    Claim |o--o| Identifier: subject
    
    Credential ||--|{ Claim: claims
    Credential ||--|| Identifier: issuer
    Credential |o--o| Identifier: subject
    
    Presentation }|--|{ Credential: credentials
    Presentation ||--|| Identifier: holder
    Presentation ||--o{ Identifier: verifier

    Message ||--|| Identifier: from
    Message ||--|{ Identifier: to
%%    Message }|--|{ Credential: credentials
%%    Message }|--|{ Presentation: presentations
    Message }|--|{ Attachment: attachments
    
%%    Attachment }|--|{ Credential: credentials
%%    Attachment }|--|{ Presentation: presentations