{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://thinkloom.app/schemas/provenance/1.0/deposit-snapshot.schema.json",
  "title": "Exact deposit snapshot",
  "description": "Immutable binding of the exact selected deposit file, manuscript revision, CPL head, and optional layout profile.",
  "type": "object",
  "properties": {
    "schema_version": {
      "const": "1.0"
    },
    "deposit_id": {
      "type": "string",
      "pattern": "^deposit_[0-9A-HJKMNP-TV-Z]{26}$"
    },
    "project_id": {
      "type": "string",
      "pattern": "^project_[0-9A-HJKMNP-TV-Z]{26}$"
    },
    "application_version": {
      "type": "string",
      "pattern": "^\\d+\\.\\d+\\.\\d+$"
    },
    "deposit_path": {
      "type": "string",
      "minLength": 1,
      "pattern": "^(?!/)(?![A-Za-z]:)(?!.*\\\\)(?!.*(?:^|/)\\.\\.?(?:/|$))[^\\u0000-\\u001f]+$"
    },
    "media_type": {
      "type": "string",
      "minLength": 1
    },
    "byte_length": {
      "type": "integer",
      "minimum": 1
    },
    "deposit_sha256": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$"
    },
    "manuscript_revision_id": {
      "type": "string",
      "pattern": "^revision_[0-9A-HJKMNP-TV-Z]{26}$"
    },
    "manuscript_revision_sha256": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$"
    },
    "cpl_chain_head": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$"
    },
    "cpl_event_sequence": {
      "type": "integer",
      "minimum": 1
    },
    "layout_profile": {
      "anyOf": [
        {
          "type": "object",
          "properties": {
            "layout_profile_id": {
              "type": "string",
              "pattern": "^layout_[0-9A-HJKMNP-TV-Z]{26}$"
            },
            "layout_profile_sha256": {
              "type": "string",
              "pattern": "^sha256:[a-f0-9]{64}$"
            }
          },
          "required": [
            "layout_profile_id",
            "layout_profile_sha256"
          ],
          "additionalProperties": false
        },
        {
          "type": "null"
        }
      ]
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\.\\d{3}Z$"
    }
  },
  "required": [
    "schema_version",
    "deposit_id",
    "project_id",
    "application_version",
    "deposit_path",
    "media_type",
    "byte_length",
    "deposit_sha256",
    "manuscript_revision_id",
    "manuscript_revision_sha256",
    "cpl_chain_head",
    "cpl_event_sequence",
    "layout_profile",
    "created_at"
  ],
  "additionalProperties": false,
  "examples": [
    {
      "schema_version": "1.0",
      "deposit_id": "deposit_01J00000000000000000000000",
      "project_id": "project_01J00000000000000000000001",
      "application_version": "0.5.2",
      "deposit_path": "deposits/registration-manuscript.pdf",
      "media_type": "application/pdf",
      "byte_length": 4096,
      "deposit_sha256": "sha256:3333333333333333333333333333333333333333333333333333333333333333",
      "manuscript_revision_id": "revision_01J0000000000000000000000B",
      "manuscript_revision_sha256": "sha256:2222222222222222222222222222222222222222222222222222222222222222",
      "cpl_chain_head": "sha256:4444444444444444444444444444444444444444444444444444444444444444",
      "cpl_event_sequence": 42,
      "layout_profile": {
        "layout_profile_id": "layout_01J00000000000000000000005",
        "layout_profile_sha256": "sha256:5555555555555555555555555555555555555555555555555555555555555555"
      },
      "created_at": "2026-07-17T18:42:10.123Z"
    }
  ]
}