Evidence row 577568

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Adds up each ingredient across several products taken together (up to 12) and compares each daily total with the adult upper limit of the country, with the same rules engine as the Verateca site. For every ingredient: total per day, applicable limit, share of the limit, status (\"within the upper limit\", \"over the upper limit\", \"no upper limit set\" or \"not compared\"), the products that contribute, and duplicates across products. Limits of other countries follow. Interactions with medicines are not checked.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "default": "US",
            "description": "Two-letter country code (ISO 3166-1 alpha-2) of the person. Limits of this country come first. Default US.",
            "type": "string"
          },
          "items": {
            "description": "Products taken together.",
            "items": {
              "additionalProperties": false,
              "properties": {
                "product_id": {
                  "description": "Verateca product id, e.g. \"US:302778\", as returned by search_products.",
                  "type": "string"
                },
                "servings_per_day": {
                  "description": "Servings a day the person takes. Default: the label dose.",
                  "exclusiveMinimum": 0,
                  "maximum": 20,
                  "type": "number"
                }
              },
              "required": [
                "product_id"
              ],
              "type": "object"
            },
            "maxItems": 12,
            "minItems": 1,
            "type": "array"
          }
        },
        "required": [
          "items"
        ],
        "type": "object"
      },
      "name": "check_stack"
    },
    {
      "description": "Puts 2 to 6 published products side by side: daily dose, price per day where published, and for each ingredient the daily amount and its share of the applicable upper limit of the country.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "default": "US",
            "description": "Two-letter country code (ISO 3166-1 alpha-2) of the person. Limits of this country come first. Default US.",
            "type": "string"
          },
          "ids": {
            "description": "Product ids, e.g. [\"US:302778\", \"US:217710\"].",
            "items": {
              "type": "string"
            },
            "maxItems": 6,
            "minItems": 2,
            "type": "array"
          }
        },
        "required": [
          "ids"
        ],
        "type": "object"
      },
      "name": "compare_products"
    },
    {
      "description": "Returns one substance of the register: its forms with the share of the element where known, the upper limit of the country first, then the limits of other countries with type, source and the date checked, reference sources, and the number of published products that contain it.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "default": "US",
            "description": "Two-letter country code (ISO 3166-1 alpha-2) of the person. Limits of this country come first. Default US.",
            "type": "string"
          },
          "id": {
            "description": "Substance id, e.g. \"magnesium\", \"vit_d\".",
            "type": "string"
          },
          "name": {
            "description": "Substance name, e.g. \"Vitamin D\", as an alternative to id.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_ingredient"
    },
    {
      "description": "Returns one published product record: composition as the label states it, daily amounts, the applicable upper limit of the country for each ingredient with its share, limits of other countries, the status in the country, prices per day where published, and the dates of each part.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "description": "Two-letter country for limits, status and published local prices. Defaults to the product URL country when supplied, otherwise the label market. Viewing a record does not confirm local sale or delivery.",
            "type": "string"
          },
          "id": {
            "description": "Verateca product id, e.g. \"US:302778\", as returned by search_products.",
            "type": "string"
          },
          "url": {
            "description": "Verateca product page address, as an alternative to id.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_product"
    },
    {
      "description": "Returns the address of the Verateca order page for one of its three paid services (quick, full, review), with the price and currency the site shows for the country and a one-line description. The tool takes no payment and creates no order; the order page asks its own questions and takes payment there.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "default": "US",
            "description": "Two-letter country code (ISO 3166-1 alpha-2) of the person. Limits of this country come first. Default US.",
            "type": "string"
          },
          "goals": {
            "description": "Optional goals to preselect on the order page (quick: 1, full: up to 3; ignored for review). They travel sealed, not in plain words.",
            "items": {
              "enum": [
                "stress",
                "energy",
                "digestion",
                "sleep",
                "immunity",
                "bones",
                "skin",
                "sport",
                "eyes"
              ],
              "type": "string"
            },
            "maxItems": 3,
            "type": "array"
          },
          "service": {
            "description": "quick: up to three products for one goal; full: one set for up to three goals; review: a written review by a Verateca specialist.",
            "enum": [
              "quick",
              "full",
              "review"
            ],
            "type": "string"
          }
        },
        "required": [
          "service"
        ],
        "type": "object"
      },
      "name": "get_selection_link"
    },
    {
      "description": "Searches the Verateca register of dietary supplements by product name, brand, ingredient or barcode. Returns up to 10 published products with id, brand, form, page address, lowest price per day where prices are published, number of offers and the date the record was checked. Results are ordered by match, never by payment.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "default": "US",
            "description": "Two-letter country code (ISO 3166-1 alpha-2) of the person. Limits of this country come first. Default US.",
            "type": "string"
          },
          "limit": {
            "default": 5,
            "description": "Number of results, 1–10.",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Product name, brand, ingredient or barcode (UPC/EAN).",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_products"
    }
  ]
}

What the leaf hashes

{"body":"985683ae43027885aa0999156da8baa496ec99ca2fa2eb6c14096cdad54db5da","id":577568,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793142658017323,"prev":null,"subject":"388c026d-a806-46dd-812d-9ee330a49623","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. 0x0b0002842fb69feb5d530388e304cf1174f2f3729dc06f0386853d7a4b04380e
2. 0x0598e38421c17b323846e038be523a19626e7a23367fe11f1f9178c04c05e490
3. 0x4297e40c617acee9e6606d0d46de3b8f5669b32fbad9351f3be352a99d5fde78
4. 0x077e7f28653a1fd77d598dcea24ba627ff19d42ae5497b0b99caa5374fbf73a4
5. 0xecf4f6cdd5f6a684dc6c070eaf30e4288c52d35f8013f135f6a4d6c081268463
6. 0x8de97c804968e1c00d9aa2c7d95bb50892008725272e14d566a46b0da3c57a40
7. 0x8c1e3b951c89b7b6c62bb1e1d92f2af372dad8798e42358a7111749f1bbd3810
8. 0x6f9b40bc89ed3b360ab45071043bc15b6f86feb9d878dd00c01a75f3908c195a
9. 0x0b71566d473211a0e78fa32d572bb046d75715d9d3e9faf6aaaf5336042215c5
10. 0xb6a4450b4a9940eedd2b07861f4e3bb98cbc22cfb025b648245e62a4512ea7b3
11. 0xab9a818db8b8604daa1d300b5336a7ecdc718ee9de04e347884c3c2ff6e455d3
12. 0x7189e38499a0d36b6f3d244260e4b1d8d20ec79407f4be030531131834122360
13. 0x74ffd6144e8464591ea30392b981f197426cfd361178829fb8a66915e2f727b0
14. 0x3e0ec8a2a8a954695a9b53a4a48a7656d7e3fd6a8795c73b49e2ef05b201ec3f
15. 0x2cf27e8a181d60d0dd27c186c2eddfcbb4e8fa71cf66feeb55a4d730e15ee8c4
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4