{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schema.keysingate.com/core/v2/allocation.json",
  "title": "BlockAllocation - allocation of a block to a holder (Section 7)",
  "description": "Coordination is required only here. Use of serial numbers within a block is offline and in any order.",
  "type": "object",
  "properties": {
    "@context": {
      "$ref": "common.json#/$defs/context"
    },
    "type": {
      "const": "BlockAllocation"
    },
    "v": {
      "$ref": "common.json#/$defs/version"
    },
    "emission": {
      "type": "string",
      "pattern": "^ksg:em:[0-9]+$"
    },
    "block": {
      "$ref": "common.json#/$defs/range"
    },
    "class": {
      "description": "The tariff and the form the journal opens in, not an anchoring regime for life (core v2 section 9): heavy opens Pro; light opens light and may go Pro; bare stays light and is never anchored.",
      "enum": [
        "heavy",
        "light",
        "bare"
      ]
    },
    "holder": {
      "$ref": "common.json#/$defs/uri"
    },
    "allocated_at": {
      "$ref": "common.json#/$defs/timestamp"
    },
    "expires_at": {
      "description": "After this moment, unused serial numbers of the block are invalid (Section 7, rule 4).",
      "$ref": "common.json#/$defs/timestamp"
    },
    "prev_closure": {
      "description": "Required from the second block onward (Section 7, rule 3). For the first block the field is OMITTED, not set to null: an absent field and null are different documents (Section 3).",
      "$ref": "common.json#/$defs/multihash"
    },
    "signatures": {
      "$ref": "common.json#/$defs/signatures"
    }
  },
  "required": [
    "@context",
    "type",
    "v",
    "emission",
    "block",
    "class",
    "holder",
    "allocated_at",
    "expires_at",
    "signatures"
  ],
  "additionalProperties": false
}