Evidence row 562631

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Compare two Valumech robots using sourced prices and specifications plus clearly labeled modeled depreciation. Returns a canonical or interactive comparison URL.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "firstRobot": {
            "description": "First catalog ID or sufficiently specific robot name.",
            "maxLength": 100,
            "minLength": 1,
            "type": "string"
          },
          "secondRobot": {
            "description": "Second catalog ID or sufficiently specific robot name.",
            "maxLength": 100,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "firstRobot",
          "secondRobot"
        ],
        "type": "object"
      },
      "name": "compare_robots"
    },
    {
      "description": "Calculate Valumech's illustrative used-value range for a delivered, publicly priced robot. This is a modeled placeholder, not an appraisal or resale comp.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "ageYears": {
            "description": "Robot age in years; decimals such as 0.5 are allowed.",
            "maximum": 20,
            "minimum": 0,
            "type": "number"
          },
          "condition": {
            "description": "Current condition using Valumech's four condition bands.",
            "enum": [
              "mint",
              "good",
              "fair",
              "heavy"
            ],
            "type": "string"
          },
          "robot": {
            "description": "Catalog ID or a sufficiently specific maker and model name.",
            "maxLength": 100,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "robot",
          "ageYears",
          "condition"
        ],
        "type": "object"
      },
      "name": "estimate_used_value"
    },
    {
      "description": "Return dated official and affiliate buying links recorded by Valumech for one robot. This never opens a retailer, submits data, adds to cart, or purchases.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "region": {
            "default": "US",
            "description": "Buyer region. The first pilot currently supports US offers.",
            "enum": [
              "US"
            ],
            "type": "string"
          },
          "robot": {
            "description": "Catalog ID or a sufficiently specific maker and model name.",
            "maxLength": 100,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "robot"
        ],
        "type": "object"
      },
      "name": "get_purchase_options"
    },
    {
      "description": "Return Valumech's sourced new-price record, configurations, evidence date, availability, modeled used-value summary, and canonical page for one robot.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "robot": {
            "description": "Catalog ID or a sufficiently specific maker and model name.",
            "maxLength": 100,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "robot"
        ],
        "type": "object"
      },
      "name": "get_robot_price"
    },
    {
      "description": "Search Valumech's read-only robot catalog by words, category, market status, or a maximum approximate USD price. At least one filter is required.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Valumech's semantic robot category.",
            "enum": [
              "humanoid",
              "robot-dog",
              "home-robot",
              "robot-vacuum",
              "mobile-manipulator",
              "service-robot"
            ],
            "type": "string"
          },
          "limit": {
            "default": 5,
            "description": "Maximum results to return, from 1 through 5.",
            "maximum": 5,
            "minimum": 1,
            "type": "integer"
          },
          "maxPriceUsd": {
            "description": "Maximum new price normalized approximately to USD.",
            "maximum": 10000000,
            "minimum": 0,
            "type": "number"
          },
          "query": {
            "description": "Robot, maker, capability, body form, or use-case words.",
            "maxLength": 100,
            "type": "string"
          },
          "status": {
            "description": "Commercial status recorded by Valumech.",
            "enum": [
              "shipping",
              "preorder",
              "announced",
              "discontinued"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_robot_catalog"
    }
  ]
}

What the leaf hashes

{"body":"6900f860db9b31564ab554b269f9f26ef994fc9bafb4b5ddac6cb361c96173e5","id":562631,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793137441697922,"prev":null,"subject":"820baf35-fb37-49e7-a98e-346b29df2e42","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. 0x73701a26f170c073e2f134ad5cb458e0874ce47c799ca849cdd020680cf21175
2. 0x7ea835b455442ab5617438ca0f6a37d018edb23501ac5e56ed380e710b117061
3. 0x0ba499a08849e8189d93abc29c0d41ae76e238280911c6ab4444beeb5f69ff12
4. 0xdc1f107be75af1644ad92ba7ffd1d0788981717828b9a6563b4c76161e51c6fb
5. 0xf4b83e7a132c7120984be672557ca0031f1411dca7cf443e70c486839a82dae2
6. 0x6166b4eddb6082eddd0cd1d6a333e0fb5c24549d9fd4bb6fa6cf4ef4d7ee1265
7. 0x82cf8405087b7242556630edf420e6941095bb4d326a14c1ce71b1528b5b4fc4
8. 0x38621501ef1fb2e303c69a91e932740e6f5e6a7dffd4986f6b70d42155fade14
9. 0x927251769b3a256e543d4e5af0e8cd942fe4a2758d24b83799c28db9b3dd4129
10. 0x11c2ba5398610ba969fa9e2d9be3cadf1959236d2613e35d3b96b8c22894e418
11. 0x87d9722f6144a6bdbc601abce8aa277e4125cc680211131dcb21639e43daeffd
12. 0x58a1b7d7965722efb70d69acfb10b39e77f817864b8d4b4069d33ff29884a3bd
13. 0x4094bd5bc2ab60e4518d1ee8a13455a69d7484ea62ecdca2618d0f39d3403503
14. 0x9848c068b1371232529d2b5738fdc45b854c57da041b69ea7c9e112b14e2d9d1
15. 0x275720ecabb68df33eee92ae4fd70572a8d952d6c61c061c2869cfc3217aa5c5
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4