{
 "format": 1,
 "label": "Travis.TX",
 "fips": 48453,
 "epoch": 2,
 "month": "2026-10",
 "merkle_root": "0e32f23a217d41de42dcc91dc4b6f7b8655fab3f6cc688402f945b37f5c7273f",
 "pda": "7h6ux5DYpudKCFf2DNAsQXpoFWqVoQ9GpnQgjUoKQfwa",
 "program": "7mi96nPvP6SB1eApAd7vN2uUEBDvNR9xVvLqPDt3uvwg",
 "packet_file": "Travis.TX.2.2026-10.csv",
 "packet_sha256": "b4ddbad2836e413313a8b674fd51f7be21b0c6bc99c992d1a3ac68c83a093916",
 "n_parcels": 386068,
 "chunk_size": 2048,
 "n_chunks": 189,
 "n_shards": 258,
 "leaf": "sha256(utf8 parcel_id|acres_6dp|lot_sqft_2dp)",
 "tree": "sha256(left||right); odd level duplicates the last node",
 "shard_key": "sha256(utf8(upper(trim(parcel_id))))[0..4] big-endian u32 mod n_shards",
 "note": "Untrusted layout file. Verify against the on-chain CountyRoot account, not against this file.",
 "n_xshards": 150,
 "alias_types": [
  {
   "label": "TCAD Property ID",
   "source": "https://gis.traviscountytx.gov/server1/rest/services/Boundaries_and_Jurisdictions/TCAD/MapServer/0",
   "note": "Travis Central Appraisal District Property ID (prop_id), from the Travis County TNR TCAD Parcels layer; fields PROP_ID and geo_id only, fetched 2026-10-18T04:24Z"
  }
 ],
 "has_prefix": true,
 "prefix_len": 3,
 "lookup_note": "x/ and p/ are lookup aids (normalized IDs, county aliases, suggestions). They are not part of the leaf or the on-chain root."
}