{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:semantic-management-framework:0.1:schema:claim-trace",
  "$comment": "SPDX-License-Identifier: Apache-2.0",
  "title": "SMF ClaimTrace",
  "type": "object",
  "properties": {
    "smf": {
      "const": "0.1"
    },
    "kind": {
      "const": "ClaimTrace"
    },
    "id": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9_]*(\\.[a-z0-9_]+)+$",
      "description": "Stable, namespaced identifier. Never derived from a label alone."
    },
    "statement": {
      "type": "string"
    },
    "value": {
      "type": "number"
    },
    "unit": {
      "type": "string"
    },
    "measurement": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9_]*(\\.[a-z0-9_]+)+(@v[0-9]+)?$",
      "description": "Reference to an ID, optionally pinned to a version (id@vN)."
    },
    "concept": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9_]*(\\.[a-z0-9_]+)+(@v[0-9]+)?$",
      "description": "Reference to an ID, optionally pinned to a version (id@vN)."
    },
    "context": {
      "type": "object"
    },
    "execution": {
      "type": "object",
      "properties": {
        "binding": {
          "type": "string",
          "description": "The build record that computed the number: a Binding id, or '<platform>:<ref>' matching a Binding in the set."
        },
        "query_hash": {
          "type": "string"
        },
        "executed_at": {
          "type": "string",
          "format": "date-time"
        }
      },
      "required": [
        "executed_at"
      ],
      "additionalProperties": false
    },
    "sources": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "system": {
            "type": "string"
          },
          "snapshot": {
            "type": "string"
          }
        },
        "required": [
          "system"
        ],
        "additionalProperties": false
      }
    },
    "provenance": {
      "type": "object",
      "properties": {
        "format": {
          "enum": [
            "w3c_prov",
            "openlineage",
            "other"
          ]
        },
        "ref": {
          "type": "string"
        }
      },
      "required": [
        "format"
      ],
      "additionalProperties": false
    },
    "verification": {
      "type": "object",
      "properties": {
        "status": {
          "enum": [
            "verified",
            "failed",
            "unverified"
          ]
        },
        "method": {
          "type": "string"
        },
        "verified_at": {
          "type": "string",
          "format": "date-time"
        }
      },
      "required": [
        "status"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "smf",
    "kind",
    "id",
    "statement",
    "value",
    "measurement",
    "execution"
  ],
  "additionalProperties": false
}