{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://stella-ops.org/schemas/proofspine.stella/v1.json",
  "title": "Proof Spine Predicate Schema",
  "description": "Schema for proofspine.stella/v1 predicate type - merkle-aggregated proof bundle",
  "type": "object",
  "required": [
    "sbomEntryId",
    "evidenceIds",
    "reasoningId",
    "vexVerdictId",
    "policyVersion",
    "proofBundleId"
  ],
  "properties": {
    "sbomEntryId": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}:pkg:.+",
      "description": "The SBOM entry ID this proof spine covers"
    },
    "evidenceIds": {
      "type": "array",
      "items": {
        "type": "string",
        "pattern": "^sha256:[a-f0-9]{64}$"
      },
      "minItems": 1,
      "description": "Sorted list of evidence IDs included in this proof bundle"
    },
    "reasoningId": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$",
      "description": "The reasoning ID linking evidence to verdict"
    },
    "vexVerdictId": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$",
      "description": "The VEX verdict ID for this entry"
    },
    "policyVersion": {
      "type": "string",
      "pattern": "^v[0-9]+\\.[0-9]+\\.[0-9]+$",
      "description": "Version of the policy used"
    },
    "proofBundleId": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$",
      "description": "Content-addressed ID of this proof bundle (merkle root)"
    }
  },
  "additionalProperties": false
}