Evidence row 305528

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Get the composition of the ieUnit basket: the nine fixed components, their immutable reference prices at the base date 2017-01-10, their current prices, and how much each one has moved since then. The basket is deliberately fixed and equally weighted; it is never rebalanced. Also returns the list of unit codes accepted by ieunit_convert.",
      "inputSchema": {
        "additionalProperties": false,
        "type": "object"
      },
      "name": "ieunit_basket"
    },
    {
      "description": "Compare one basket component against the ieUnit over a period of time, measured in ieUnit rather than in a national currency. Answers questions such as how the Swiss franc, gold or Bitcoin held their value against a neutral reference. A negative figure means the component lost value relative to the ieUnit. Available components: USD, EUR, JPY, CHF, CNH, BTC, ETH, Gold, Silber.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "component": {
            "description": "The basket component to compare against the ieUnit.",
            "enum": [
              "USD",
              "EUR",
              "JPY",
              "CHF",
              "CNH",
              "BTC",
              "ETH",
              "Gold",
              "Silber"
            ],
            "type": "string"
          },
          "from": {
            "description": "Start date, YYYY-MM-DD. Defaults to the base date 2017-01-10.",
            "type": "string"
          },
          "to": {
            "description": "End date, YYYY-MM-DD. Defaults to the latest available day.",
            "type": "string"
          }
        },
        "required": [
          "component"
        ],
        "type": "object"
      },
      "name": "ieunit_compare"
    },
    {
      "description": "Convert an amount between the ieUnit and about 60 other units: roughly 30 fiat currencies, the 30 largest cryptocurrencies, gold and silver per gram (XAU, XAG), and XIN. Works in both directions, for example 250 CHF to ieUnit or 10 ieUnit to gold. Use \"ieUnit\" as the unit code for the ieUnit itself. Call ieunit_basket first if you need the list of available unit codes.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "amount": {
            "description": "The amount to convert. Must be a finite number.",
            "type": "number"
          },
          "from": {
            "description": "Source unit code, for example CHF, USD, BTC, XAU or ieUnit.",
            "type": "string"
          },
          "to": {
            "description": "Target unit code, for example ieUnit, EUR, BTC or XAG.",
            "type": "string"
          }
        },
        "required": [
          "amount",
          "from",
          "to"
        ],
        "type": "object"
      },
      "name": "ieunit_convert"
    },
    {
      "description": "Get the historical value of the ieUnit in USD since its fixed base date 2017-01-10, where it started at exactly 1.00. Returns a dated series plus summary figures (start, end, total change, highest and lowest value). Use this for questions about how the ieUnit developed over time. Defaults to monthly resolution; daily data is available but produces large results over long ranges.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "from": {
            "description": "Start date, YYYY-MM-DD. Earliest and default is 2017-01-10.",
            "type": "string"
          },
          "step": {
            "description": "Time resolution. Defaults to month. Long ranges at day resolution are automatically thinned out.",
            "enum": [
              "day",
              "week",
              "month"
            ],
            "type": "string"
          },
          "to": {
            "description": "End date, YYYY-MM-DD. Defaults to the latest available day.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "ieunit_history"
    },
    {
      "description": "Get an authoritative plain-text explanation of what the ieUnit is and how it is calculated: the geometric mean formula, the fixed base date, the data sources, the governance rules for basket changes, and an explicit statement of what the ieUnit is NOT. Call this before describing or characterising the ieUnit to a user, so the description matches the published definition.",
      "inputSchema": {
        "additionalProperties": false,
        "type": "object"
      },
      "name": "ieunit_methodology"
    },
    {
      "description": "Get the current value of one ieUnit. ieUnit is a neutral value reference unit based on a fixed basket of nine components (five fiat currencies, Bitcoin, Ethereum, gold, silver). Returns the value in USD, CHF and EUR, the 24-hour change, and the date of the last update. Values are recalculated once per day. Use this for questions like \"what is one ieUnit worth right now\".",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "currency": {
            "description": "Currency for the headline value. Defaults to USD. All three are always included in the result.",
            "enum": [
              "USD",
              "CHF",
              "EUR"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "ieunit_value"
    }
  ]
}

What the leaf hashes

{"body":"758d6181642839b7d99bc660e8d7a56148add2aa57820c6b1184725ade1ce5ac","id":305528,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793056501902345,"prev":null,"subject":"0b8130d4-d2b3-476b-91ed-42049ae090db","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. 0x0bad46cf131a4f2ce8e4f8ea67a9d264712380eeec228c7b61239bfb6439b2cb
2. 0x1286759c69f0426cc889c77ec51d39672d1f08e0daa7ed4db2f3334a4287959b
3. 0x0d69652137892ce4532675cdb3a535272dbe7a97c4d1156db663c7200cb4962f
4. 0x6804764f047488ecbc0fe02fe0f3a7cb247dcac28ae5cb07747dee5fa78e766b
5. 0x2dc4d0925d47e7f3d061d2e298a6115bf51fbc86db405ac84d0d9368018f4cc4
6. 0xd612a3878b26a49fbce7455b2dabdcad86201e8a293c7c3faa32952f0a249190
7. 0xd7c078f9e37f09f3bcbc256a73dbda0889f080953961c88cc2a1e9233e7d9f37
8. 0xee0ec87ed35f6790a2736fb3ee8977aa4e3633389095de7427da4e6edf652529
9. 0xcf56b455b5b0f7ef9ab2fef91f3013f44e32be2ea799581f3c94dff51734e809
10. 0x1a7a0a8ff566dcb3ad66f73910275bf00a0f4ebbdab35b5ced530c21acf7b701
11. 0x8eb597b47b241899ba9947d79964713d71582858e40e13030f7b428006b500c7
12. 0x0295c7c2280f85143f6ea027ec5cab1cda783eeef5bca0accb9aea607c5aa3c2
13. 0x5aefcf9e3d86e125861c0d490079969110eea8fc901ec61531bba10bb58258a1
14. 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae