Evidence row 293500

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Use this when a car park operator or analyst asks about the parking market around a European airport: how many car parks compete there, the share offering a shuttle, valet or covered parking, the median and shortest distance to the airport, and how many have published prices. Phrasings: \"how many parking competitors at Eindhoven airport\", \"share of valet parkings at Orly\", \"concurrence parking aéroport Bordeaux\". Data: Park & Keep airport parking index.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "airport": {
            "description": "IATA code (e.g. \"BRU\") or airport / city name (e.g. \"Charleroi\", \"Málaga\").",
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "airport"
        ],
        "type": "object"
      },
      "name": "airport_market_snapshot"
    },
    {
      "description": "Use this when the user wants to know which car parks serve a European airport and what they offer: shuttle, valet, covered parking, 24 h access, keys kept, EV charging, online booking, distance to the airport and the date each listing was checked. Phrasings: \"parking near Charleroi airport with a shuttle\", \"valet parking at Brussels airport\", \"où se garer près d'Orly\". Returns no price: for prices use airport_price_snapshot. Data: Park & Keep airport parking index.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "airport": {
            "description": "IATA code (e.g. \"BRU\") or airport / city name (e.g. \"Charleroi\", \"Málaga\").",
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "airport"
        ],
        "type": "object"
      },
      "name": "airport_parking_options"
    },
    {
      "description": "Use this when the user asks how much parking costs at a European airport for a stay of about 3, 7 or 14 days, or whether a parking price is normal there. Phrasings: \"how much is a week of parking at Brussels airport\", \"prix parking Charleroi 7 jours\", \"is my quote for a week at Amsterdam airport expensive\". Returns the lowest, median and highest public price of the airport's car parks per stay length, only when at least 3 prices were read, with the dates read. Never a price per operator. Data: Park & Keep airport parking index.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "airport": {
            "description": "IATA code (e.g. \"BRU\") or airport / city name (e.g. \"Charleroi\", \"Málaga\").",
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "airport"
        ],
        "type": "object"
      },
      "name": "airport_price_snapshot"
    }
  ]
}

What the leaf hashes

{"body":"3b3562eae1cfb9f71153eedd076036961a4c371e2fa633c072c7d86bced11c58","id":293500,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793049432239904,"prev":null,"subject":"04f5b8e1-0ab8-40d7-b472-bd062b052a6b","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xce3402c843aef3b1442d88ff9e45283a227f9cf21e049c108ed3d0a933837eb0
2. 0x277bbcfa91c6c3c08e04aca143ae0a2d96a92c225164ecbf405b57abdca94f4d
3. 0xa14c0dd2835554d59d1b7e4b6c3cd34a6ebce63c96a7b14f64b0cc62927020f2
4. 0x2db3448f2859235c1356b4cf5b7bea9fb2ed9813c497f33b653d094bee2175a5
5. 0x09318f857e7c25ce9eb696762fa6f79e2bc41af2b9ed298fdd186ca05e815b91
6. 0x63ab956e6ad50a3626d76643bc09371c659a4d9facf01489d39caf67cacfca1a
7. 0x5a8ca6eaa15a3ef5cd689e1365fbeb26a8ecf8c49d00216f54037ad7a656a857
8. 0xebd6494312b4b179f76402b441c02aa631259e348eca466eacfd4e92082b1bfc
9. 0xd3551510c81fd83005b86c84e3f1b172085f27cc8e6ffaa14edb70ca9263631f
10. 0x2ade4beca319f9877e5b22694d275fbcb1a94a2e38ad058893960d379e44e892
11. 0xd57a32d9d2666c4270544dcb78bbea2f4774705d3879a86973628e2542543e62
12. 0xa45f4438c9296b0ba586fc2eec9f0202e5d3c61a1d3adc975b80f6a1f4a5ca57
13. 0xe43762a621da83c0b4b63f549cd2e19c428ac702bfc1038d70233867b06c447f
14. 0xefabf1105e09cf52c12c58e60cbb5048b9ac3f02631d1816a926e14bdd86fbdf
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae