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Credential Schemas

Schemas are useful when enforcing a specific structure on a collection of data like a Verifiable Credential. Data Verification schemas, for example, are used to verify that the structure and contents of a Verifiable Credential conform to a published schema. On the other hand, Data Encoding schemas are used to map the contents of a Verifiable Credential to an alternative representation format, such as a binary format used in a zero-knowledge proof.

Truvera credential schemas are using json schema format and should follow this structure https://json-schema.org/understanding-json-schema/reference

Create Schema

Schemas are used to describe the structure of credentials, specifically the credential subject. It helps the issuer, holder, and verifier to unambiguously determine the claims contained within the credential. To create a schema, you need to define the object body using JSON schema.

Parameters

Name
In
Type
Required
Description

body

body

object

true

JSON-schema.

Create Credential Schema

post

Creates a JSON schema on the blockchain. More info about Schema Creation

Authorizations
Body

Verifiable Credential Schema

$schemastringOptional

The schema version, generally following the JSON-schema specification.

Example: http://json-schema.org/draft-07/schema#
namestringOptional

Name of the schema.

Example: My Schema
descriptionstringOptional

A brief description of the schema.

Example: Truvera Schema Example
typestringOptional

Defines the type of schema. Usually 'object'.

Example: object
propertiesobjectOptional

The properties that define the schema.

Example: {"id":{"type":"string"},"emailAddress":{"type":"string","format":"email"},"alumniOf":{"type":"string"}}
requiredstring[]Optional

Required fields within the schema.

Example: ["emailAddress","alumniOf"]
additionalPropertiesbooleanOptional

Specifies whether additional properties outside the defined schema are allowed.

Example: true
Responses
200
Schema will be created.
application/json
post
POST /schemas HTTP/1.1
Host: api-testnet.truvera.io
Authorization: Bearer JWT
Content-Type: application/json
Accept: */*
Content-Length: 311

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "name": "My Schema",
  "description": "Truvera Schema Example",
  "type": "object",
  "properties": {
    "id": {
      "type": "string"
    },
    "emailAddress": {
      "type": "string",
      "format": "email"
    },
    "alumniOf": {
      "type": "string"
    }
  },
  "required": [
    "emailAddress",
    "alumniOf"
  ],
  "additionalProperties": true
}
{
  "id": "2549",
  "data": {
    "id": "1a678fe6973f34d2a5c016cbff347161b9a595f5cc44a3e15f1eca2a404f294a",
    "schema": {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "description": "Truvera Schema Example",
      "type": "object",
      "properties": {
        "id": {
          "type": "string"
        },
        "emailAddress": {
          "type": "string",
          "format": "email"
        },
        "alumniOf": {
          "type": "string"
        }
      },
      "required": [
        "emailAddress",
        "alumniOf"
      ],
      "additionalProperties": false
    }
  }
}

List Schemas

Return a list of all schemas created by the authenticated user.

Parameters

Name
In
Type
Required
Description

offset

query

integer

false

How many items to offset by for pagination

limit

query

integer

false

How many items to return at one time (max 64)

List Schemas

get

Get all schemas created by user. More info about List Schemas

Authorizations
Query parameters
offsetinteger · int32Optional

How many items to offset by for pagination

Default: 0
limitinteger · int32 · min: 1 · max: 64Optional

How many items to return at one time (max 64)

Default: 64
includeEcosystemsbooleanOptional

Whether to include ecosystems or not

Default: true
Responses
200
All schemas by user
application/json
get
GET /schemas HTTP/1.1
Host: api-testnet.truvera.io
Authorization: Bearer JWT
Accept: */*

[
  {
    "id": "db0c559035226419b4061d7c725a6d7d8aeebd3acf784fd0d69c9a033f29a8d1",
    "schema": {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "description": "Truvera Schema Example",
      "type": "object",
      "properties": {
        "id": {
          "type": "string"
        },
        "emailAddress": {
          "type": "string",
          "format": "email"
        },
        "alumniOf": {
          "type": "string"
        },
        "birthDate": {
          "type": "string",
          "format": "date"
        }
      },
      "required": [
        "emailAddress",
        "alumniOf"
      ],
      "additionalProperties": false
    },
    "author": "did:cheqd:testnet:ac2b9027-ec1a-4ee2-aad1-1e316e7d6f59",
    "uri": "https://schema.truvera.io/myschema.json"
  },
  {
    "id": "f408d91da3ebab27f2d50150f7cf54ab14099b3ab5f53e2cbf208a90d6adbfd7",
    "schema": {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "description": "Truvera Schema Example",
      "type": "object",
      "properties": {
        "id": {
          "type": "string"
        },
        "emailAddress": {
          "type": "string",
          "format": "email"
        },
        "alumniOf": {
          "type": "string"
        },
        "birthDate": {
          "type": "string",
          "format": "date"
        }
      },
      "required": [
        "emailAddress",
        "alumniOf"
      ],
      "additionalProperties": false
    },
    "author": "did:cheqd:testnet:ac2b9027-ec1a-4ee2-aad1-1e316e7d6f59",
    "uri": "https://schema.truvera.io/myschema.json"
  },
  {
    "id": "37ad6cf1c51a33ba25f50a8f106e2b06f9e1963296c5bfd914c0d71b7bad42e6",
    "schema": {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "description": "Truvera Schema Example",
      "type": "object",
      "properties": {
        "id": {
          "type": "string"
        },
        "emailAddress": {
          "type": "string",
          "format": "email"
        },
        "alumniOf": {
          "type": "string"
        },
        "birthDate": {
          "type": "string",
          "format": "date"
        }
      },
      "required": [
        "emailAddress",
        "alumniOf"
      ],
      "additionalProperties": false
    },
    "author": "did:cheqd:testnet:ac2b9027-ec1a-4ee2-aad1-1e316e7d6f59",
    "uri": "https://schema.truvera.io/myschema.json"
  }
]

Get Schema

Reading a Schema from the blockchain can easily be achieved by using the get method which will return the JSON schema to a specific schema ID. The schemaIdneeds to be URL encoded (e.g. /schemas/https%3A%2F%2Fschema.dock.io%2FTestSchema-V1-1695817897561.json)

Parameters

Name
In
Type
Required
Description

schemaId

path

String

true

A URL encoded schema id.

Get Schema

get

Returns the JSON schema for a specific ID. More info about Get Schema By ID

Authorizations
Path parameters
schemaIdstring · min: 64 · max: 64Required

32 byte hex string. Ignoring higher base (base64) for simplicity.

Responses
200
Schema
application/json
get
GET /schemas/{schemaId} HTTP/1.1
Host: api-testnet.truvera.io
Authorization: Bearer JWT
Accept: */*

{
  "id": "https://schema.truvera.io/ExampleSchema-V5-1722512884923.json",
  "schema": null,
  "uri": "https://schema.truvera.io/ExampleSchema-V5-1722512884923.json",
  "created": "2025-06-30T22:23:22.789Z",
  "isOwner": true,
  "ownerName": "Truvera",
  "ownerLogo": "https://logo.truvera.io/owner"
}

Delete Schema

Delete Schema

delete

Deletes a schema from the database

Authorizations
Path parameters
schemaIdstring · min: 64 · max: 64Required

32 byte hex string. Ignoring higher base (base64) for simplicity.

Responses
200
Schema has been deleted
application/json
delete
DELETE /schemas/{schemaId} HTTP/1.1
Host: api-testnet.truvera.io
Authorization: Bearer JWT
Accept: */*

{
  "id": "2434",
  "data": {
    "status": "pending"
  }
}

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