{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://meshcognition.org/spec/mmp/schema/cmb.schema.json",
  "title": "MMP v2.0 Cognitive Memory Block — corrected Core Secure profile",
  "description": "The decrypted logical record has exactly two top-level sections. CAT7 cognition is content-addressed; metadata carries authenticated authorship, audience, descent and optional application bytes.",
  "type": "object",
  "required": ["categories", "metadata"],
  "additionalProperties": false,
  "properties": {
    "categories": {
      "type": "object",
      "required": ["focus", "issue", "intent", "motivation", "commitment", "perspective", "mood"],
      "additionalProperties": false,
      "properties": {
        "focus": { "$ref": "#/$defs/category" },
        "issue": { "$ref": "#/$defs/category" },
        "intent": { "$ref": "#/$defs/category" },
        "motivation": { "$ref": "#/$defs/category" },
        "commitment": { "$ref": "#/$defs/category" },
        "perspective": { "$ref": "#/$defs/category" },
        "mood": { "$ref": "#/$defs/moodCategory" }
      }
    },
    "metadata": {
      "type": "object",
      "required": [
        "key", "addressScheme", "assertionId", "signatureSuite",
        "createdByNodeId", "createdBy", "createdTimestamp", "room", "to",
        "lineage", "sigAlg", "sig"
      ],
      "additionalProperties": false,
      "properties": {
        "key": { "type": "string", "pattern": "^cmb-[0-9a-f]{64}$" },
        "addressScheme": { "const": "mmp-cmb-merkle-v2" },
        "assertionId": { "type": "string", "pattern": "^asrt-[0-9a-f]{64}$" },
        "signatureSuite": { "const": "mmp-sig-v2.0" },
        "createdByNodeId": { "type": "string", "format": "uuid" },
        "createdBy": {
          "type": "string",
          "minLength": 1,
          "description": "Signed display label. Never used for identity resolution or routing."
        },
        "createdTimestamp": { "type": "integer", "minimum": 0 },
        "room": { "type": "string", "minLength": 1 },
        "to": {
          "anyOf": [
            { "type": "string", "format": "uuid" },
            { "type": "null" }
          ]
        },
        "lineage": {
          "anyOf": [
            { "$ref": "#/$defs/lineage" },
            { "type": "null" }
          ]
        },
        "application": {
          "anyOf": [
            { "$ref": "application.schema.json" },
            { "type": "null" }
          ]
        },
        "sigAlg": { "const": "ed25519" },
        "sig": {
          "type": "string",
          "pattern": "^[A-Za-z0-9_-]{86}$",
          "description": "Unpadded base64url Ed25519 signature over mmp-sig-v2.0."
        },
        "extensions": {
          "type": "object",
          "description": "Negotiated extension data. Core readers ignore unsupported extension members only when their extension was negotiated.",
          "additionalProperties": true
        }
      }
    }
  },
  "$defs": {
    "categoryMeta": {
      "type": "object",
      "required": ["key", "parents"],
      "additionalProperties": false,
      "properties": {
        "key": { "type": "string", "pattern": "^[0-9a-f]{64}$" },
        "parents": {
          "type": "array",
          "uniqueItems": true,
          "items": { "type": "string" }
        }
      }
    },
    "category": {
      "type": "object",
      "required": ["text", "meta"],
      "additionalProperties": false,
      "properties": {
        "text": { "type": "string" },
        "meta": { "$ref": "#/$defs/categoryMeta" }
      }
    },
    "moodCategory": {
      "type": "object",
      "required": ["text", "meta"],
      "additionalProperties": false,
      "properties": {
        "text": { "type": "string" },
        "meta": { "$ref": "#/$defs/categoryMeta" },
        "valence": { "type": "number", "minimum": -1, "maximum": 1 },
        "arousal": { "type": "number", "minimum": -1, "maximum": 1 }
      }
    },
    "lineage": {
      "type": "object",
      "required": ["parents", "method"],
      "additionalProperties": false,
      "properties": {
        "parents": {
          "type": "array",
          "uniqueItems": true,
          "items": { "type": "string", "pattern": "^cmb-[0-9a-f]{64}$" }
        },
        "method": { "type": "string", "minLength": 1 }
      }
    }
  }
}