{
  "pool_key": "arc_miracle_box",
  "game": "Neverness to Everness",
  "system": {
    "id": "gashapon",
    "name": "Gashapon"
  },
  "banner": {
    "id": "Arc_MiracleBox",
    "name": "Arc Miracle Box",
    "shared_pity": true
  },
  "request": {
    "family": "arc",
    "length": 34,
    "constant": 2060,
    "constant_hex": "0x080c",
    "selector": null,
    "cursor_offset": 29,
    "cursor_step": 2,
    "page_formula": "cursor / 2"
  },
  "response": {
    "records_per_full_page": 5,
    "timestamp_group_size": 10,
    "first_record_offset_hex": "0x4c"
  },
  "notes": [
    "Arc history is separate from Monopoly history.",
    "Arc timestamp groups are 10-pull groups; an incomplete oldest group is still exported (stable prefix) with a warning."
  ]
}