{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/mojomanyana/pi-daddy/contracts/ledger-record/v1/record.schema.json",
  "title": "pi-daddy ledger record envelope v1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "v",
    "seq",
    "prev",
    "at",
    "kind",
    "id",
    "body",
    "digest"
  ],
  "properties": {
    "v": {
      "const": 1
    },
    "seq": {
      "type": "integer",
      "minimum": 1
    },
    "prev": {
      "anyOf": [
        {
          "type": "null"
        },
        {
          "type": "string",
          "pattern": "^[0-9a-f]{64}$"
        }
      ],
      "description": "SHA-256 of the previous line's bytes; null for the first record"
    },
    "at": {
      "type": "string",
      "format": "date-time",
      "description": "the writer's clock, not the body's timestamp"
    },
    "kind": {
      "type": "string",
      "enum": [
        "binding",
        "capability",
        "lifecycle",
        "approval",
        "lease",
        "check",
        "fact",
        "work",
        "control",
        "experiment",
        "activity",
        "advice"
      ]
    },
    "id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 128
    },
    "body": {
      "description": "the record payload; a governance event validates against governance-event.schema.json"
    },
    "imported": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "path",
        "line"
      ],
      "properties": {
        "path": {
          "type": "string"
        },
        "line": {
          "type": "integer",
          "minimum": 1
        }
      },
      "description": "present on records copied from a pre-format ledger; the source is left untouched"
    },
    "digest": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$",
      "description": "SHA-256 of the canonical JSON of the record without this field"
    }
  }
}