{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:corpus-reasoning-answer:v1",
  "title": "CorpusReasoningAnswer v1",
  "description": "Signed final answer artifact for one Corpus reasoning query. This is the post-procurement result fact; live deliberation, if any, remains outside this artifact.",
  "type": "object",
  "additionalProperties": false,
  "x-dia-workflow": "project",
  "x-dia-status": "draft",
  "x-dia-basis": [
    "doc/project/40-proposals/069-corpus.md"
  ],
  "required": [
    "schema/v",
    "answer/id",
    "query/id",
    "correlation/id",
    "responder/node-id",
    "created-at",
    "answer/text",
    "answer/digest",
    "policy/digest",
    "signature"
  ],
  "properties": {
    "schema/v": { "const": 1 },
    "answer/id": {
      "type": "string",
      "pattern": "^answer:[A-Za-z0-9][A-Za-z0-9:-]*$"
    },
    "query/id": {
      "type": "string",
      "pattern": "^query:[A-Za-z0-9][A-Za-z0-9:-]*$"
    },
    "correlation/id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 256
    },
    "responder/node-id": {
      "type": "string",
      "pattern": "^node:did:key:z[1-9A-HJ-NP-Za-km-z]+$"
    },
    "selected/bid-id": {
      "type": "string",
      "pattern": "^bid:[A-Za-z0-9][A-Za-z0-9:-]*$"
    },
    "supersedes": {
      "type": "string",
      "pattern": "^answer:[A-Za-z0-9][A-Za-z0-9:-]*$",
      "description": "Optional previous answer revision replaced by this answer in local latest read-models. Federated publication remains append-only: a superseding answer is a new fact, not an overwrite."
    },
    "revision/no": {
      "type": "integer",
      "minimum": 1,
      "description": "Optional human-facing revision counter. Ordering authority remains append-only fact order plus supersedes links, not this advisory counter alone."
    },
    "room/id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512
    },
    "room-event/high-water": {
      "type": "integer",
      "minimum": 0
    },
    "created-at": {
      "type": "string",
      "format": "date-time"
    },
    "answer/text": {
      "type": "string",
      "minLength": 1,
      "maxLength": 65536
    },
    "answer/digest": { "$ref": "#/$defs/sha256_digest" },
    "policy/digest": { "$ref": "#/$defs/sha256_digest" },
    "classification": {
      "type": "string",
      "enum": ["Public", "Community", "Personal"],
      "description": "Optional classification.v1 tier. If omitted by a legacy/admin producer, the AD answer envelope is treated as Public; production providers should set this explicitly."
    },
    "contributor/weights": {
      "type": "array",
      "maxItems": 128,
      "items": { "$ref": "#/$defs/contributor_weight" }
    },
    "evidence/refs": {
      "type": "array",
      "maxItems": 128,
      "items": {
        "type": "string",
        "minLength": 1,
        "maxLength": 512
      }
    },
    "signature": { "$ref": "#/$defs/signature" },
    "extensions": { "$ref": "#/$defs/extensions" }
  },
  "$defs": {
    "sha256_digest": {
      "type": "string",
      "pattern": "^sha256:[A-Za-z0-9_-]{16,128}$"
    },
    "contributor_weight": {
      "type": "object",
      "additionalProperties": false,
      "required": ["contributor/ref", "weight"],
      "properties": {
        "contributor/ref": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512
        },
        "weight": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        }
      }
    },
    "signature": {
      "type": "object",
      "additionalProperties": false,
      "required": ["alg", "value"],
      "properties": {
        "alg": {
          "enum": ["ed25519", "ed25519+domain-v1"],
          "description": "For ed25519+domain-v1, verification uses the corpus-reasoning-answer-signature.v1 domain. The schema name is not the signature domain."
        },
        "value": {
          "type": "string",
          "minLength": 1
        },
        "key/public": {
          "type": "string",
          "minLength": 1
        }
      }
    },
    "extensions": {
      "type": "object",
      "additionalProperties": true
    }
  }
}