Evidence row 579470

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Read-only. Full details for one VailVacay listing by id: complete plain-text description, FAQ, hours, up to 10 gallery photos with captions and credits (e.g. 'Photo via Expedia'), listing page URL, and booking links (the path to book with the named provider, not ads). Links marked affiliate:true are affiliate links; VailVacay may earn a commission at no extra cost to the user. Returns NOT_FOUND for an unknown id.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "adults": {
            "maximum": 14,
            "minimum": 1,
            "type": "integer"
          },
          "check_in": {
            "type": "string"
          },
          "check_out": {
            "type": "string"
          },
          "id": {
            "description": "Listing id from search_listings",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_listing"
    },
    {
      "description": "Read-only. List the VailVacay directory's top-level categories with listing counts.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "Read-only. Values usable in search_listings: areas/neighborhoods, price tiers, amenities and tags, each with listing counts, plus notes on how each is derived.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_filters"
    },
    {
      "description": "Search VailVacay's curated directory of Vail, Colorado businesses (hotels and lodging, restaurants, bars and après-ski, activities, ski shops, shopping, services and spas). Read-only. Filters: keyword, category, area/neighborhood, price tier, amenities (e.g. ski_in_ski_out, walk_to_lifts, hot_tub, pool, pet_friendly), tag, and distance from a lat/lng or from another listing. Returns compact plain-text listings (description shortened; use get_listing for the full text, hours and FAQ) with the listing page URL, address, phone, website, up to 2 credited photos, and booking links. Booking links are the path to book with the named provider (Expedia for hotels, plus Viator/Klook where the listing has one), not ads; those marked affiliate:true are affiliate links, and VailVacay may earn a commission if the user books, at no extra cost to them. Results are not ranked by commission. Pass check_in/check_out to get date-specific Expedia hotel links (live rates are shown on Expedia, not in this result).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "adults": {
            "default": 2,
            "maximum": 14,
            "minimum": 1,
            "type": "integer"
          },
          "amenities": {
            "description": "All must match",
            "items": {
              "enum": [
                "ski_in_ski_out",
                "walk_to_lifts",
                "pool",
                "hot_tub",
                "spa",
                "fitness_center",
                "pet_friendly",
                "parking",
                "shuttle",
                "family_friendly",
                "breakfast",
                "kitchen",
                "rooftop",
                "river_view",
                "outdoor_seating",
                "apres_ski",
                "live_music",
                "free_entry",
                "michelin",
                "wheelchair_accessible"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "area": {
            "description": "Area/neighborhood, e.g. 'Vail Village', 'Lionshead', 'Golden Peak', 'Cascade Village'. See list_filters.",
            "type": "string"
          },
          "category": {
            "description": "Category name or id from list_categories, e.g. 'Hotels'",
            "type": "string"
          },
          "check_in": {
            "description": "YYYY-MM-DD (hotels)",
            "type": "string"
          },
          "check_out": {
            "description": "YYYY-MM-DD",
            "type": "string"
          },
          "has_booking_link": {
            "description": "Only listings with a booking link",
            "type": "boolean"
          },
          "limit": {
            "default": 10,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "near_lat": {
            "type": "number"
          },
          "near_listing_id": {
            "description": "Rank by distance from this listing",
            "type": "string"
          },
          "near_lng": {
            "type": "number"
          },
          "page": {
            "default": 1,
            "minimum": 1,
            "type": "integer"
          },
          "price_tier": {
            "enum": [
              "budget",
              "moderate",
              "upscale",
              "luxury"
            ],
            "type": "string"
          },
          "q": {
            "description": "Keywords, e.g. 'steak', 'ski rental', 'hot tub condo'",
            "type": "string"
          },
          "radius_km": {
            "description": "Max distance (km) when near_* is set",
            "type": "number"
          },
          "sort": {
            "enum": [
              "relevance",
              "distance",
              "name"
            ],
            "type": "string"
          },
          "tag": {
            "description": "Exact listing tag, see list_filters",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_listings"
    },
    {
      "description": "Read-only. Live search of bookable tours and activities in Vail, Colorado from Viator's partner API. Returns title, live starting ('from') price and currency, rating, review count, duration, free-cancellation flag, image and a booking_url. Optional start_date/end_date return only products Viator lists as available on those dates. Default order: keyword relevance when q is given, otherwise traveler rating; 'featured' uses Viator's own default order. booking_url is the Viator booking page and a Viator affiliate link: VailVacay may earn a commission if the user books, at no extra cost to them. Viator confirms the final price, availability and cancellation terms before payment.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "currency": {
            "default": "USD",
            "enum": [
              "USD",
              "EUR",
              "GBP",
              "CAD",
              "AUD",
              "THB"
            ],
            "type": "string"
          },
          "end_date": {
            "description": "YYYY-MM-DD",
            "type": "string"
          },
          "free_cancellation": {
            "type": "boolean"
          },
          "limit": {
            "default": 5,
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          },
          "max_price": {
            "type": "number"
          },
          "min_rating": {
            "maximum": 5,
            "minimum": 0,
            "type": "number"
          },
          "page": {
            "default": 1,
            "minimum": 1,
            "type": "integer"
          },
          "q": {
            "description": "Keywords, e.g. 'jeep tour', 'fly fishing', 'mountain bike'",
            "type": "string"
          },
          "sort": {
            "description": "Default: relevance to q when q is given (Viator keyword match), otherwise rating (highest traveler rating first). featured = Viator's own default order.",
            "enum": [
              "relevance",
              "rating",
              "price_low",
              "price_high",
              "featured"
            ],
            "type": "string"
          },
          "start_date": {
            "description": "YYYY-MM-DD",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_tours"
    }
  ]
}

What the leaf hashes

{"body":"e4fac4ef8ac7426f178518fbd00f50b039d784ed2f061afd5c34981d60c48ef9","id":579470,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793143454454544,"prev":null,"subject":"1ea3c1ff-1cb1-45b2-be2c-8983cf41cb48","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xbfef91a42f51af695b9571d0db1f7832742920125ba3243eef09f1e6ed49751c
2. 0x5b4860cb5d265be48a9384fca79620c58a81af2d5319ebd6825d82051a8ae317
3. 0x441652d026e59cd0256a035ad8f1edb1d7495ad2b502d53f3d7a864a803597d6
4. 0x558e2f73b5c218e38dae94c142394afbea36dd8383e90bf03a0703adf52d5bb0
5. 0x4ed8c7f093a6bde1827bb5100d059d37893de6bc49682810f2cb5d5ed0063c1c
6. 0xef2a10451617abdeb6dfb676fac2588c97ee9ab50dcce2a66fd6ccb1857443d1
7. 0xc67fb93ab2cf6a58f2cd6a47daae1a4dcaf4a5b42e0a31446319bfd10b1aa30f
8. 0xac997bf783e9e6bee62a16ca63e1586ae240fdc494f08a808457e74363294c42
9. 0x517670922866990633d40ba2278e95fdd8fa9b0f5e145d7808875498b36a310f
10. 0xaf97a9427f16ec846cbf90266f963eafe897184ecd205ab609c7322ef6cc2560
11. 0x7ff6a586e9498a807b90cc0724f36067102a7bfb70c439f694c884710ed4910a
12. 0xa9bcdb8be937595e637058d98ed979d02cbac590262daa97def86c50ca63628b
13. 0xb4800af1fe2ae822adba5c087faf1dc0bc2d7c9de2e3e602a2b65aefc1d53c94
14. 0xa453d1738637a5c663802d07ce095aa340c80d53a4288ae277a72e265868ce4e
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4