{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://thinkloom.app/schemas/provenance/1.0/manuscript-revision.schema.json",
  "title": "Manuscript revision",
  "description": "Immutable canonical manuscript revision.",
  "type": "object",
  "properties": {
    "schema_version": {
      "const": "1.0"
    },
    "revision_id": {
      "type": "string",
      "pattern": "^revision_[0-9A-HJKMNP-TV-Z]{26}$"
    },
    "project_id": {
      "type": "string",
      "pattern": "^project_[0-9A-HJKMNP-TV-Z]{26}$"
    },
    "parent_revision_id": {
      "anyOf": [
        {
          "type": "string",
          "pattern": "^revision_[0-9A-HJKMNP-TV-Z]{26}$"
        },
        {
          "type": "null"
        }
      ]
    },
    "canonical_markdown_path": {
      "type": "string",
      "minLength": 1,
      "pattern": "^(?!/)(?![A-Za-z]:)(?!.*\\\\)(?!.*(?:^|/)\\.\\.?(?:/|$))[^\\u0000-\\u001f]+$"
    },
    "canonical_markdown_sha256": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$"
    },
    "word_count": {
      "type": "integer",
      "minimum": 0
    },
    "created_by": {
      "enum": [
        "user",
        "assistant_acceptance",
        "system_restore"
      ]
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\.\\d{3}Z$"
    }
  },
  "required": [
    "schema_version",
    "revision_id",
    "project_id",
    "parent_revision_id",
    "canonical_markdown_path",
    "canonical_markdown_sha256",
    "word_count",
    "created_by",
    "created_at"
  ],
  "additionalProperties": false,
  "examples": [
    {
      "schema_version": "1.0",
      "revision_id": "revision_01J0000000000000000000000A",
      "project_id": "project_01J00000000000000000000001",
      "parent_revision_id": null,
      "canonical_markdown_path": "manuscript/revisions/revision.md",
      "canonical_markdown_sha256": "sha256:dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd",
      "word_count": 42,
      "created_by": "user",
      "created_at": "2026-07-17T18:42:10.123Z"
    }
  ]
}