Evidence row 570610

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Full metadata for one dataset: description, source, period range, dimension labels, default view and covered countries.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "Dataset id from search_catalog.",
            "type": "integer"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_dataset"
    },
    {
      "description": "Time series values for one country from a dataset (oldest first). Optionally pick a series by exact dimension values (from inspect_dataset) and a start period such as 2015, Q1/2015 or 01/2015.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "description": "Country, e.g. 'Poland'. Defaults to the dataset's default country.",
            "type": "string"
          },
          "dim1": {
            "description": "Optional exact value of dimension 1.",
            "type": "string"
          },
          "dim2": {
            "description": "Optional exact value of dimension 2.",
            "type": "string"
          },
          "dim3": {
            "description": "Optional exact value of dimension 3.",
            "type": "string"
          },
          "dim4": {
            "description": "Optional exact value of dimension 4.",
            "type": "string"
          },
          "id": {
            "description": "Dataset id from search_catalog.",
            "type": "integer"
          },
          "max_points": {
            "description": "Max points, most recent kept (default 200).",
            "maximum": 500,
            "minimum": 1,
            "type": "integer"
          },
          "period_from": {
            "description": "Optional first period to include, e.g. '2015'.",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_series"
    },
    {
      "description": "Show one dataset's dimensions, default series and the latest few values for a country. Use after search_catalog to check the dataset fits before pulling the full series.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "description": "Optional country, e.g. 'France'.",
            "type": "string"
          },
          "id": {
            "description": "Dataset id from search_catalog.",
            "type": "integer"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "inspect_dataset"
    },
    {
      "description": "Find official health datasets (Eurostat, OECD, World Bank, IMF, WHO, national statistics offices). Use first to get dataset ids. Optional country and source filters. Returns dataset cards, not values.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "country": {
            "description": "Optional country name to prefer datasets covering it, e.g. 'Germany'.",
            "type": "string"
          },
          "limit": {
            "description": "Max results (default 8).",
            "maximum": 16,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "What to find, e.g. 'unemployment rate' or 'GDP per capita'.",
            "type": "string"
          },
          "source_name": {
            "description": "Optional source, e.g. 'Eurostat', 'OECD', 'World Bank', 'IMF'.",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_catalog"
    }
  ]
}

What the leaf hashes

{"body":"6658a95c2652ae661691cd0c275799d38e690dc945b5bec79393e49cf642eb1e","id":570610,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793139842575016,"prev":null,"subject":"aeb63fbb-3c5f-424e-b9ff-e3b3486a44f6","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. 0x57f350ab55119fbbf6ff85e77c185ce7b5f15f403623134e83fb92f82700de40
2. 0x68a5e671dccfdd7917a3f24add0f662150ea45811e09c74b99e0e66cbd5bce16
3. 0x5f7a2101fcd2fa3d5f7cf7ec6f82e5fcbfc56376eea70ba0e16ef176001622e8
4. 0xc7b755a4a0f126bbf08738b84010b31c0933e179009217746675f40014190c27
5. 0x67b70a904e286ff02d68f007b20ea8f2a0de23a79750bf415087461fae899cd2
6. 0x3f8994aeb94b56d4d0c2d96363cdd8c5bdeac75239d49ca50c696a38f902c7ea
7. 0xc076a7c585fefc4906e47406d21945af089d0fc6f9348d9fb111c80cafc3411e
8. 0xe824ccc6811085bbbfc9a9186fdd9171d70ce906a622eea60454be63ec22472f
9. 0x749dd7810e93722b6a0c4fc7ddac9ca2a3d5962a59e4b37c145c876c24a0c37d
10. 0x5da26e96b9582f972c3c7dac75c33fb8a42b5b11e20794c0a6cd50d9aef25fe5
11. 0xe678c1cc136e18a65726dc5a13892d1977e8fac2970f7a2b8d2866a8ab83ef02
12. 0xe06cb1b692af263d62f5739bc4ad709ffe5a2576ef5a59a1610d50c03c7b9584
13. 0x906b5f0e8ef1fe7894886d84f460bb3239d5f14b14ad4adff27c7dcea6265169
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4