{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://sediment.so/schemas/derived-artifacts/provenance/v1.json",
  "title": "Provenance",
  "description": "One derivation provenance stamp.",
  "type": "object",
  "properties": {
    "policy_version": {
      "type": "string",
      "description": "The derivation implementation policy version."
    },
    "quarantine_revision": {
      "type": "integer",
      "description": "The integer quarantine-log high-water mark used for the derivation."
    },
    "policy_digest": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "description": "SHA-256 of the fully resolved derivation policy when available."
    }
  },
  "additionalProperties": false,
  "required": [
    "policy_version",
    "quarantine_revision",
    "policy_digest"
  ]
}