Evidence row 222631

What was observed

{
  "count": 11,
  "tools": [
    {
      "description": "PAID FEATURE. Run many calculations in one request. calls: list of {tool, arguments} (max 100). One failure never aborts the batch.",
      "inputSchema": {
        "properties": {
          "calls": {
            "items": {
              "type": "object"
            },
            "type": "array"
          }
        },
        "required": [
          "calls"
        ],
        "type": "object"
      },
      "name": "batch_calculate"
    },
    {
      "description": "Business-day arithmetic honoring weekends + regional holidays. operation: add_business_days (needs days, negative ok) | count_business_days (needs end_date, inclusive) | next_business_day | previous_business_day. region: US | UK | EU | NONE. custom_holidays: list of YYYY-MM-DD.",
      "inputSchema": {
        "properties": {
          "custom_holidays": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "days": {
            "type": "integer"
          },
          "end_date": {
            "type": "string"
          },
          "operation": {
            "type": "string"
          },
          "region": {
            "default": "US",
            "type": "string"
          },
          "start_date": {
            "type": "string"
          }
        },
        "required": [
          "operation",
          "start_date"
        ],
        "type": "object"
      },
      "name": "business_days"
    },
    {
      "description": "Compute a business/SaaS/finance metric with exact decimal precision. Metrics: ltv, cac, ltv_cac_ratio, payback_period_months, contribution_margin, gross_margin, churn_rate, mrr_growth_rate, arr, break_even_units, nrr, grr, rule_of_40, magic_number. Rates/margins are decimals (0.05=5%). Call list_metrics for schemas.",
      "inputSchema": {
        "properties": {
          "currency": {
            "default": "USD",
            "type": "string"
          },
          "metric": {
            "type": "string"
          },
          "params": {
            "type": "object"
          }
        },
        "required": [
          "metric",
          "params"
        ],
        "type": "object"
      },
      "name": "calculate_metric"
    },
    {
      "description": "Compound-interest/growth math. operation: future_value (rate, years, present_value) | present_value (rate, years, future_value) | cagr (begin_value, end_value, years). rate is annual decimal (0.08=8%). compounding: daily|weekly|monthly|quarterly|semiannually|annually|continuous.",
      "inputSchema": {
        "properties": {
          "begin_value": {
            "type": "number"
          },
          "compounding": {
            "default": "annually",
            "type": "string"
          },
          "currency": {
            "default": "USD",
            "type": "string"
          },
          "end_value": {
            "type": "number"
          },
          "future_value": {
            "type": "number"
          },
          "operation": {
            "type": "string"
          },
          "present_value": {
            "type": "number"
          },
          "rate": {
            "type": "number"
          },
          "years": {
            "type": "number"
          }
        },
        "required": [
          "operation"
        ],
        "type": "object"
      },
      "name": "compound_growth"
    },
    {
      "description": "Convert an amount between major currencies (USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR) with Decimal precision. Static offline table on the free tier; live/historical ECB rates (date/live=true) require a paid plan.",
      "inputSchema": {
        "properties": {
          "amount": {
            "type": "number"
          },
          "date": {
            "type": "string"
          },
          "from_currency": {
            "type": "string"
          },
          "live": {
            "type": "boolean"
          },
          "to_currency": {
            "type": "string"
          }
        },
        "required": [
          "amount",
          "from_currency",
          "to_currency"
        ],
        "type": "object"
      },
      "name": "currency_convert"
    },
    {
      "description": "Asset depreciation schedule. method: straight_line | declining_balance | sum_of_years_digits. Book value converges to salvage_value.",
      "inputSchema": {
        "properties": {
          "cost": {
            "type": "number"
          },
          "currency": {
            "default": "USD",
            "type": "string"
          },
          "method": {
            "type": "string"
          },
          "salvage_value": {
            "type": "number"
          },
          "useful_life_years": {
            "type": "integer"
          }
        },
        "required": [
          "method",
          "cost",
          "salvage_value",
          "useful_life_years"
        ],
        "type": "object"
      },
      "name": "depreciation"
    },
    {
      "description": "Server health/status metadata.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "health_check"
    },
    {
      "description": "Internal Rate of Return: per-period rate where NPV=0 (Newton + bisection). Requires a sign change in cashflows.",
      "inputSchema": {
        "properties": {
          "cashflows": {
            "items": {
              "type": "number"
            },
            "type": "array"
          },
          "guess": {
            "default": 0.1,
            "type": "number"
          }
        },
        "required": [
          "cashflows"
        ],
        "type": "object"
      },
      "name": "internal_rate_of_return"
    },
    {
      "description": "List every supported metric with descriptions and required/optional params.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "list_metrics"
    },
    {
      "description": "Level-payment loan: monthly payment, total interest, payoff, and (optional) full schedule. payment = P*r/(1-(1+r)^-n), r=annual_rate/12.",
      "inputSchema": {
        "properties": {
          "annual_rate": {
            "type": "number"
          },
          "currency": {
            "default": "USD",
            "type": "string"
          },
          "extra_payment": {
            "default": 0,
            "type": "number"
          },
          "include_schedule": {
            "default": false,
            "type": "boolean"
          },
          "principal": {
            "type": "number"
          },
          "term_months": {
            "type": "integer"
          }
        },
        "required": [
          "principal",
          "annual_rate",
          "term_months"
        ],
        "type": "object"
      },
      "name": "loan_amortization"
    },
    {
      "description": "Net Present Value (discounted cash flow). NPV = sum(CF_t/(1+rate)^t). cashflows[0] = period 0 (usually the negative outlay).",
      "inputSchema": {
        "properties": {
          "cashflows": {
            "items": {
              "type": "number"
            },
            "type": "array"
          },
          "currency": {
            "default": "USD",
            "type": "string"
          },
          "rate": {
            "type": "number"
          }
        },
        "required": [
          "rate",
          "cashflows"
        ],
        "type": "object"
      },
      "name": "net_present_value"
    }
  ]
}

What the leaf hashes

{"body":"812db8803a9975d0c74894f8329fec25034967b44b175a959949eeaa68c41b46","id":222631,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793028175400157,"prev":null,"subject":"53de189c-9803-4634-87b2-1257de485e3e","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. 0x326bfaa84eea7b2478a727733fd1ec59a0010cf685a92b2c7ff4f79f98998e25
2. 0x50145f421b4856661a8fe84915fc28fd210ef2d4dfb9bfff326378101185f005
3. 0xcf6c9bae0418049f72fb82e92e1d5c6c468512f4f130f281b33bc4841cfafbec
4. 0xff924165b64cff9c4c4bae58afe5ec398c7cab1e11aa661d3655a44ff2118b18
5. 0xac61060fe97f00891b8b080793ced7d30432a5c395a545ea147e29c8844566bc
6. 0xac0ea8f9b61333ec0e980df080b04d0aa41e3acc75a8ebd1d95079495dda0b50
7. 0x788f24ed7ef9e128c747ee33e64b3e25538f15016490934f662c5b9bd130f441
8. 0xe7f2d3457c053448eebcc931645ff5ada0933cb5c24ad253c177f41b200802d9
9. 0x7186e930ab2d6340c1f9e36a0a16f77d602f22cd5bb13d9e666145bff3ba96f0
10. 0x6f4fdc0c2e1b3d84e2b1d6729c3f9a04bcd118e81d7bf76e3ca851a0dd1ede43
11. 0x631846da76ec1e8570c7c09dada1cc0affff7b5654335239fd84d2059c750b13
12. 0x2f4617d7a962f32849050ad5649d9dc4f962fd8618073cfa8519e6f862dfcef8
13. 0x08de74b7fb265ddb83e4c673da8a94e5f71829b2e6e7464c71c5138e450f2217
14. 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae