DDO Schema

OE Verifiable Presentation

mermaid

classDiagram
    class `W3C Verifiable Presentation` {
    }
    class `OE Service Credential` {
    }
    class `W3C Verifiable Credential` {
    }
    class CredentialSubject {
    }
 
    `W3C Verifiable Presentation` "1" --> "1..*" `OE Service Credential` : contains
    `OE Service Credential` "1" --> "1" CredentialSubject : defines
    `W3C Verifiable Credential` <|-- `OE Service Credential` : is a type of

Verifiable Presentation (off-chain metadata object)

Attribute	Type	Description	Required
`@context`	Array of `string`	The value of the `@context` property MUST be an ordered set where the first item is a URL with the value `https://www.w3.org/ns/credentials/v2`. Subsequent items in the ordered set MUST be composed of any combination of URLs and/or objects, where each is processable as a JSON-LD Context.	✅
`type`	Array of `string`	`["VerifiablePresentation", "OceanEnterpriseServicePresentation"]`	✅
`verifiableCredential`	Array of `VerifiableCredential`	Contains Verifiable credentials in enveloped format (`EnvelopedVerifiableCredential`) .	✅

OE Service Credential (DDO)

This is a W3C verifiable credential.

Attribute	Type	Description	Required
`@context`	Array of `string`	The value of the `@context` property MUST be an ordered set where the first item is a URL with the value `https://www.w3.org/ns/credentials/v2`. Subsequent items in the ordered set MUST be composed of any combination of URLs and/or objects, where each is processable as a JSON-LD Context.	✅
`id`	`string` (URL)	If present, the value of the `id` property MUST be a single URL, which MAY be dereferenceable. It is RECOMMENDED that the URL in the `id` be one which, if dereferenceable, results in a document containing machine-readable information about the `id`.	The `id` property is OPTIONAL.
`type`	Array of `string`	`["VerifiableCredential", "OceanEnterpriseServiceCredential"]`	✅
`credentialSubject`	credentialSubject	A verifiable credential MUST have a `credentialSubject` property.	✅
`issuer`	`string` (URL)	A verifiable credential MUST have an `issuer` property. The value of the `issuer` property MUST be either a URL, or an object containing an `id` property whose value is a URL; in either case, the issuer selects this URL to identify itself in a globally unambiguous way. It is RECOMMENDED that the URL be one which, if dereferenced, results in a controller document, as defined in [VC-DATA-INTEGRITY] or [VC-JOSE-COSE], about the issuer that can be used to verify the information expressed in the credential. More info here.	✅
`version`	`string`	Version number of "OE Service Credential" standard in SemVer notation referring to this DDO spec version, like `1.0.0`.

credentialSubject

CredentialSubject

mermaid

---
title: CredentialSubject
---
classDiagram
 
    class CredentialSubject {
    }
 
    class Metadata {
    }
    class Credentials {
    }
 
    class AlgorithmMetadata["AlgorithmMetadata\n(for algorithm type)"] {
    }
 
    class Container {
    }
    class Service {
    }
    class ConsumerParameters["Consumer\nParameters"] {
    }
    class Compute {
    }
 
    CredentialSubject "1" --> "1" Metadata
    CredentialSubject "1" --> "0..*" Credentials
    CredentialSubject "1" --> "1..*" Service
 
    Metadata "1" --> "0..1" AlgorithmMetadata
    AlgorithmMetadata "1" --> "1" Container
    AlgorithmMetadata "1" --> "0..*" ConsumerParameters
 
    Service "1" --> "0..1" Compute
    Service "1" --> "0..*" ConsumerParameters

Attribute	Type	Description	Required
`id`		If present, the value of the `id` property MUST be a single URL, which MAY be dereferenceable. It is RECOMMENDED that the URL in the `id` be one which, if dereferenceable, results in a document containing machine-readable information about the `id`.	The `id` property is OPTIONAL.
`metadata`	`metadata`		✅
`services`	Array of `service`		✅
`credentials`	`credentials`		✅ TODO discuss new secure default
`chainId`	`number`	Stores the chainId of the network the DDO was published to.	✅
`nftAddress`	`string`	NFT contract linked to this asset	✅