Evidence row 305310

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Compare GBP purchasing power between years, with prices, wages and housing context. RPI covers 1948 onwards; CPI covers 1988 onwards. \"now\" means the latest stored observation, not a live price.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "amount": {
            "description": "Amount in GBP; rounded to the nearest penny.",
            "maximum": 1000000000000,
            "minimum": 0.01,
            "type": "number"
          },
          "from": {
            "description": "Starting calendar year.",
            "maximum": 2026,
            "minimum": 1948,
            "type": "integer"
          },
          "series": {
            "default": "rpi",
            "description": "Inflation measure; RPI has the longer history.",
            "enum": [
              "rpi",
              "cpi"
            ],
            "type": "string"
          },
          "to": {
            "anyOf": [
              {
                "maximum": 2026,
                "minimum": 1948,
                "type": "integer"
              },
              {
                "const": "now",
                "type": "string"
              }
            ],
            "default": "now",
            "description": "Ending calendar year, or latest available data."
          }
        },
        "required": [
          "amount",
          "from"
        ],
        "type": "object"
      },
      "name": "adjust_for_inflation"
    },
    {
      "description": "Employee income tax and National Insurance for 2026/27, or the gross salary needed for a target net income. England, Wales and Northern Ireland only; Scotland is unsupported. Excludes pensions, student loans, benefits and other income. Includes a historical UK taxpayer income rank.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "amount": {
            "description": "Annual gross salary (gross mode), or annual target take-home pay (net mode), in whole GBP. Multiply monthly figures by 12 first.",
            "maximum": 1000000000,
            "minimum": 1,
            "type": "integer"
          },
          "mode": {
            "default": "gross",
            "enum": [
              "gross",
              "net"
            ],
            "type": "string"
          },
          "region": {
            "description": "Confirm the tax jurisdiction; Scottish income tax is not supported.",
            "enum": [
              "england",
              "wales",
              "northern_ireland"
            ],
            "type": "string"
          }
        },
        "required": [
          "amount",
          "region"
        ],
        "type": "object"
      },
      "name": "calculate_take_home"
    },
    {
      "description": "Express a GBP amount as a share and duration of a stored 2025-26 public budget, with comparisons against other budgets. The NHS comparison uses England's DHSC day-to-day budget as a proxy. These are illustrative averages, not live spending rates.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "amount": {
            "description": "Amount in GBP.",
            "maximum": 1000000000000000,
            "minimum": 0.01,
            "type": "number"
          },
          "budget": {
            "default": "nhs",
            "description": "Budget to compare against; response also includes other budgets.",
            "enum": [
              "everything",
              "nhs",
              "pensions",
              "welfare",
              "interest",
              "education",
              "defence",
              "borrowing",
              "taxes",
              "monarchy"
            ],
            "type": "string"
          }
        },
        "required": [
          "amount"
        ],
        "type": "object"
      },
      "name": "compare_public_spending"
    }
  ]
}

What the leaf hashes

{"body":"78dd6a11a6ea3ba31c61fc2186466b34740023e6ba4cde70eed26a4c7cc58611","id":305310,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793056384126621,"prev":null,"subject":"49df6a7b-52f2-4ac8-a927-6020211c4323","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. 0xbbefe854d9b620737464a5e1b440776c27c270f3dc22104750c2eac43f1ce641
2. 0xac82ff66d36b50f1853b13d492ab6f32df55d745a8c274c7300cf8b1ab9a21f2
3. 0xdefe330fc147c52384436e903bbbcb684223c751e1cfdbf16caad5480d94076b
4. 0x536e0fec1de19e48fc87e06d9f12097f1c40427e8e4f56f202f3a3ad2aace564
5. 0x9c0233ca40f62b8ac900adf6dc7af365b7856a11f1bb679a966a52076ab91e93
6. 0x70d7bf1ec8fb534c7bfe58a8ed44316cf407b09086658645873dffaec4cbbd29
7. 0x914455d463e5d39cbda444da3adb20cc308d763df740e3353f8f3988d04f1f5c
8. 0x0a551deae163e434cc263f009b5429a81abe44b2ca8bca4fbdf397681457ce40
9. 0x587c2e85bf208fd14cf915d84c5812370275bac40db3b06872ee900e81f0d538
10. 0xff2d4f941fd0a20bb13feaaab2cfa12f33654e2b0ed185cce0c62986dd52c038
11. 0x66ed746e8b7893417ecf36cd9e7178eac8d5a36914238191ee21e14d3aa57d8d
12. 0x571bf2cc487a35d2ef7662b375d1fa9179fe0f6cab6f6cebdb1a6113d25f3c92
13. 0xd5b5bb5812612371a70171b2252d90e95bb0581ea5a3be198122adc8442e4f79
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae