Evidence row 306147

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Describes available data sources (Державний судновий реєстр / Суднова книга), freshness (import dates), record counts, and available fields.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "get_dataset_metadata"
    },
    {
      "description": "Aggregate public vessel counts for answering \"how many vessels\" questions.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "get_registry_stats"
    },
    {
      "description": "Look up a vessel in the Ukrainian vessel registries using its registration number. Handles -, ., and space variance and Latin/Cyrillic forms. Returns the full public registry record, including a web_url pointing to the public vessel information page.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "registration_number": {
            "description": "Registration number, for example УПС-0129.",
            "minLength": 3,
            "type": "string"
          }
        },
        "required": [
          "registration_number"
        ],
        "type": "object"
      },
      "name": "lookup_vessel"
    },
    {
      "description": "Search public data from the Ukrainian State Ship Registry and Ship Book by free-text query and structured filters. Deterministic ordering with exact registration-number matches first. Handles Cyrillic and Latin scripts and separator-insensitive numbers (УПС-0129 ≡ УПС 0129 ≡ UPS-0129). Each result includes a web_url pointing to the public vessel information page.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "build_year_max": {
            "description": "Inclusive maximum build year.",
            "maximum": 2100,
            "minimum": 1900,
            "type": "integer"
          },
          "build_year_min": {
            "description": "Inclusive minimum build year.",
            "maximum": 2100,
            "minimum": 1900,
            "type": "integer"
          },
          "home_port": {
            "description": "Partial match on home port.",
            "type": "string"
          },
          "limit": {
            "description": "Page size.",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "description": "Pagination offset.",
            "maximum": 9007199254740991,
            "minimum": 0,
            "type": "integer"
          },
          "q": {
            "description": "Registration number, vessel name, or owner name. Accepts Latin or Cyrillic.",
            "minLength": 2,
            "type": "string"
          },
          "source": {
            "description": "Dataset to search.",
            "enum": [
              "registry",
              "book",
              "both"
            ],
            "type": "string"
          },
          "vessel_type": {
            "description": "Partial match on vessel type (e.g. земснаряд).",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_vessel_registries"
    }
  ]
}

What the leaf hashes

{"body":"d2ea7570d0606dae128346300cbb437d6a490334594ec24c3691d1ee29ace734","id":306147,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793056836386565,"prev":null,"subject":"c6f44286-5717-4cc5-b280-90b2ef6447df","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. 0x2e52b3c1c6e815d121cf3c637d7b615b594e4d50a00c80759231b4a4a941fa11
2. 0x95312b569741ffe2059795975ad0ed8e97430c9f0cc4a0f22816aec4b070a91c
3. 0x0149996fe0bfd23268032eb25d5bceb21d235122d99a7c8b2ce6bc0fda4e5838
4. 0xded544c2951149a49888e96d2265dc3ed0b739a654335b9136be70666fa86e12
5. 0x9006ba45cdbfa8cc296b2012079e9e4c8feb78261e930d6e516b3c74e1ee800a
6. 0x54731c32a4aa8c7800eda1f6fbc7c09658ffa9432c4bbc3c883244bfa09ab1e8
7. 0x589b0760b2823838843a0dab3ab5556b89bc14b00a3f0abbb5150db1d2fe4cec
8. 0x5b8fbdd16e4df3df386806bd453dc955c06001f93789a77daf8e3149a57811a8
9. 0x349271008d517aaab9a96d68a822587298607376410b8c6fd8263f4f02380e86
10. 0xa951d5291fbe153c9da97ebe48573a4b06ab6c4cf74b760cdb5dd940d98878db
11. 0x2087bc34c7c4a9c4216b0697b940d6f0a768262a8da11f1e788c8045c979de9c
12. 0x12cda00da304cf48d9b3c1874c07a6f0a2e143ba0d25e359b8fd805abb057b32
13. 0x36a44931b230976c04691d90bf3a25ed4111d74c78b672850d8025a911ca88dd
14. 0x683955a5b2250ad50568d022a6580d8739b6aff1356779d72a773b088e7c289c
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae