Evidence row 305629

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Returns one value of one indicator for up to 20 countries or regions: for the given year, or the latest observed value in each country when no year is given. Each value has its own period and chart link; projections are labelled. Codes without data are listed separately.",
      "inputSchema": {
        "properties": {
          "countries": {
            "description": "ISO3 codes of the countries or regions to compare.",
            "items": {
              "description": "ISO 3166-1 alpha-3 code, for example USA, DEU, ARG, or WLD for the world.",
              "pattern": "^[A-Za-z]{3}$",
              "type": "string"
            },
            "maxItems": 20,
            "minItems": 1,
            "title": "Countries",
            "type": "array"
          },
          "indicator": {
            "description": "Indicator slug from search_indicators, for example cpi-inflation.",
            "maxLength": 255,
            "minLength": 1,
            "pattern": "^[a-z0-9_-]+$",
            "title": "Indicator",
            "type": "string"
          },
          "year": {
            "anyOf": [
              {
                "maximum": 2100,
                "minimum": 1800,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Calendar year. Omit for the latest observed value.",
            "title": "Year"
          }
        },
        "required": [
          "indicator",
          "countries"
        ],
        "title": "compare_countriesArguments",
        "type": "object"
      },
      "name": "compare_countries"
    },
    {
      "description": "Returns the whole history of one indicator for one country or region, up to 1500 values per call, for people signed in to EconDash with full data access; other signed-in accounts get as many values as get_indicator_series. Needs sign-in to EconDash. Without years: the history up to the latest observed value, with the nearest projection in next_projection. With start_year and/or end_year: the values in that range, the latest ones and truncated true when it holds more. Same fields as get_indicator_series. Country is an ISO 3166-1 alpha-3 code.",
      "inputSchema": {
        "properties": {
          "country": {
            "description": "ISO 3166-1 alpha-3 code, for example USA, DEU, ARG, or WLD for the world.",
            "pattern": "^[A-Za-z]{3}$",
            "title": "Country",
            "type": "string"
          },
          "end_year": {
            "anyOf": [
              {
                "maximum": 2100,
                "minimum": 1800,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Last calendar year of the series; projections up to this year are included.",
            "title": "End Year"
          },
          "indicator": {
            "description": "Indicator slug from search_indicators, for example cpi-inflation.",
            "maxLength": 255,
            "minLength": 1,
            "pattern": "^[a-z0-9_-]+$",
            "title": "Indicator",
            "type": "string"
          },
          "start_year": {
            "anyOf": [
              {
                "maximum": 2100,
                "minimum": 1800,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "First calendar year of the series.",
            "title": "Start Year"
          }
        },
        "required": [
          "indicator",
          "country"
        ],
        "title": "get_full_seriesArguments",
        "type": "object"
      },
      "name": "get_full_series"
    },
    {
      "description": "Returns the description, unit, frequency, source, publisher, licence, attribution text, coverage in years and countries, and the time of the last data change for one indicator.",
      "inputSchema": {
        "properties": {
          "indicator": {
            "description": "Indicator slug from search_indicators, for example cpi-inflation.",
            "maxLength": 255,
            "minLength": 1,
            "pattern": "^[a-z0-9_-]+$",
            "title": "Indicator",
            "type": "string"
          }
        },
        "required": [
          "indicator"
        ],
        "title": "get_indicator_detailsArguments",
        "type": "object"
      },
      "name": "get_indicator_details"
    },
    {
      "description": "Returns values of one indicator for one country or region. A call returns at most 30 annual, 40 quarterly, 120 monthly, 52 weekly, 250 daily values (about 30 years of annual data, 10 years of quarterly or monthly, one year of weekly or daily). Without years: the latest observed values. With start_year and/or end_year: the values in that range; when the range holds more, the latest ones are returned and truncated is true. With year: one value for that year (the last period of that year for monthly or quarterly data). Includes the unit, source, licence, the range of periods with data and a link to the EconDash chart page that shows the full history. Projections such as IMF forecasts are labelled; without end_year or year, the series stops at the latest observed value and the nearest projection comes in a separate next_projection field. Country is an ISO 3166-1 alpha-3 code.",
      "inputSchema": {
        "properties": {
          "country": {
            "description": "ISO 3166-1 alpha-3 code, for example USA, DEU, ARG, or WLD for the world.",
            "pattern": "^[A-Za-z]{3}$",
            "title": "Country",
            "type": "string"
          },
          "end_year": {
            "anyOf": [
              {
                "maximum": 2100,
                "minimum": 1800,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Last calendar year of the series; projections up to this year are included.",
            "title": "End Year"
          },
          "indicator": {
            "description": "Indicator slug from search_indicators, for example cpi-inflation.",
            "maxLength": 255,
            "minLength": 1,
            "pattern": "^[a-z0-9_-]+$",
            "title": "Indicator",
            "type": "string"
          },
          "start_year": {
            "anyOf": [
              {
                "maximum": 2100,
                "minimum": 1800,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "First calendar year of the series.",
            "title": "Start Year"
          },
          "year": {
            "anyOf": [
              {
                "maximum": 2100,
                "minimum": 1800,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Calendar year for a single value. Omit to get a series.",
            "title": "Year"
          }
        },
        "required": [
          "indicator",
          "country"
        ],
        "title": "get_indicator_seriesArguments",
        "type": "object"
      },
      "name": "get_indicator_series"
    },
    {
      "description": "Lists the countries and regional aggregates in EconDash as ISO 3166-1 alpha-3 codes with names. Regions include World Bank groups such as WLD (World) and EUU (European Union).",
      "inputSchema": {
        "properties": {},
        "title": "list_countriesArguments",
        "type": "object"
      },
      "name": "list_countries"
    },
    {
      "description": "Searches the EconDash catalogue by keyword, for example GDP and growth, inflation, unemployment and wages, population, life expectancy, interest and exchange rates, government debt, trade, house prices, oil, gold and metal prices, stock indices, energy, health, education and internet use. Use it when the user asks for a statistic for a country or region: its latest value, history or a comparison. Returns up to 25 matches with the slug, name, unit, frequency, source and years covered. The slug is the input for get_indicator_series, compare_countries and get_indicator_details. The catalogue has no series for individual shares or cryptocurrencies (only the Crypto Fear & Greed Index), tax rates, steel or the Baltic Dry Index.",
      "inputSchema": {
        "properties": {
          "limit": {
            "default": 10,
            "description": "Maximum number of results.",
            "maximum": 25,
            "minimum": 1,
            "title": "Limit",
            "type": "integer"
          },
          "query": {
            "description": "Words to search for, for example 'inflation' or 'gdp per capita'.",
            "maxLength": 100,
            "minLength": 2,
            "title": "Query",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "title": "search_indicatorsArguments",
        "type": "object"
      },
      "name": "search_indicators"
    }
  ]
}

What the leaf hashes

{"body":"d8641aa645f0663ef38e42110098da49fb127df8820b4cbaaf2aeac3b35468e1","id":305629,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793056547635829,"prev":null,"subject":"c22723ac-2f5e-49e8-afa2-525b3dc005d2","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. 0x28240ee6cf2ed2c27d0ca36e630d92c8271fe09df02e0fefebdc060dcb8bf73d
2. 0xb39e602f7480578968896ada876757488c5cf74cde2f11ea924977de2e5c2b7f
3. 0xd24d166a6f16299f7d776eb1c358b78a0b1d42c7cc21fada52ff5e2fed4c25b6
4. 0x1f986f05250bbbd8fc0778367f3c801afa172ab58f7a2918b57e3e2bdb83b2ba
5. 0xad3f8340054c17fab09262cc653e6c0032d9d8cab67ca8b969fca45b53e001e1
6. 0xfbe06c85c97581d0acf0df69d43614ad6dfd53479a37f2bf8dff07e05680ce97
7. 0x28d1f27116923305d5eb503de62368bf5a6827d89fedd9e17d5190c9406509bf
8. 0x0cac57b47d23f4b755c3e34ce375b1c285bde5ba12770464232ca4a571ad171c
9. 0x765a547b33e6c90dd78128b1c845297e1ccd846bd7b52128ae52c9e5830c32b3
10. 0x4d8bb16b4aec5841b672df8d199e4352602bcc1a2c03f3991b935d7477eac607
11. 0x29ff42cd28c985738cc9b9746505241162025974e4e3ebf7c6681609002132fa
12. 0x364047261f51ecdbe278514b4f415358118ef4644f7124e15a40f80a86f6a05b
13. 0x16a8fb19a5e4f4535e7cb3fce5c15ecfa188586bb74e347ee71164f8af27dfe1
14. 0xd843afcced75dedd39194ff9bd12326b88099e6112686db2299392d022dc3146
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae