schema.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://cdevents.dev/0.5.0-draft/schema/custom",
  "properties": {
    "context": {
      "properties": {
        "version": {
          "type": "string",
          "minLength": 1
        },
        "id": {
          "type": "string",
          "minLength": 1
        },
        "source": {
          "type": "string",
          "minLength": 1,
          "format": "uri-reference"
        },
        "type": {
          "type": "string",
          "pattern": "^dev\\.cdeventsx\\.[a-zA-Z0-9]+-[a-zA-Z]+\\.[a-zA-Z]+\\.[0-9]\\.[0-9]\\.[0-9]$"
        },
        "timestamp": {
          "type": "string",
          "format": "date-time"
        },
        "schemaUri": {
          "type": "string",
          "minLength": 1,
          "format": "uri"
        },
        "chainId": {
          "type": "string",
          "minLength": 1
        },
        "links": {
          "$ref": "links/embeddedlinksarray"
        }
      },
      "additionalProperties": false,
      "type": "object",
      "required": [
        "version",
        "id",
        "source",
        "type",
        "timestamp"
      ]
    },
    "subject": {
      "properties": {
        "id": {
          "type": "string",
          "minLength": 1
        },
        "source": {
          "type": "string",
          "minLength": 1,
          "format": "uri-reference"
        },
        "type": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9]+-[a-zA-Z]+$"
        },
        "content": {
          "type": "object",
          "additionalProperties": true
        }
      },
      "additionalProperties": false,
      "type": "object",
      "required": [
        "id",
        "type",
        "content"
      ]
    },
    "customData": {
      "oneOf": [
        {
          "type": "object"
        },
        {
          "type": "string",
          "contentEncoding": "base64"
        }
      ]
    },
    "customDataContentType": {
      "type": "string"
    }
  },
  "additionalProperties": false,
  "type": "object",
  "required": [
    "context",
    "subject"
  ]
}