{
  "comments": {
    "new": "-12 disc offset: No MCN"
  },
  "legacy": {
    "cdtext_catalog": {
      "new": "0000000000000"
    },
    "write_offset": {
      "new": "-12, +78",
      "old": "-12"
    }
  },
  "ring_codes": {
    "new": "790507\tR3F IFPI L240 13 IFPI 4121\n790507-RLK\tV IFPI L237 -7 IFPI 39A7",
    "old": "790507\tR3F IFPI L240 13 IFPI 4121"
  }
}