Evidence row 218451

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Plan fair player rotations for pickup games: who plays on each court every round and who sits out, balancing games played across the roster. Use when more players show up than court spots. Does not split money; for costs use split_costs or split_series.",
      "inputSchema": {
        "properties": {
          "capacity": {
            "description": "Players per court: 2 for singles, 4 for doubles, 10 for 5v5 basketball",
            "minimum": 1,
            "type": "integer"
          },
          "courts": {
            "description": "Number of courts in use at once (default 1)",
            "minimum": 1,
            "type": "integer"
          },
          "players": {
            "description": "Unique roster names, at least capacity x courts of them, e.g. [\"Asha\",\"Dev\",\"Mira\",\"Sam\",\"Lee\",\"Kai\"]",
            "items": {
              "type": "string"
            },
            "minItems": 2,
            "type": "array"
          },
          "rounds": {
            "description": "Number of rounds to schedule, 1-50",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [
          "players",
          "capacity",
          "rounds"
        ],
        "type": "object"
      },
      "name": "rotation_plan"
    },
    {
      "description": "Given a shared total and who already paid what, compute each player's balance and the minimal set of payments (who pays whom, how much) to settle everyone. Use when the question is 'who owes whom'. For recurring sessions with different attendees use split_series.",
      "inputSchema": {
        "properties": {
          "currency": {
            "description": "Currency code used only for display, e.g. USD, EUR, GBP (default USD)",
            "type": "string"
          },
          "participants": {
            "description": "At least 2 players with unique names; include 'paid' for anyone who already paid, e.g. [{\"name\":\"Asha\",\"paid\":96},{\"name\":\"Dev\"}]",
            "items": {
              "properties": {
                "name": {
                  "description": "Player name, unique within the list, e.g. 'Asha'",
                  "type": "string"
                },
                "paid": {
                  "description": "Amount this player already paid toward the total, in currency units (default 0)",
                  "minimum": 0,
                  "type": "number"
                }
              },
              "required": [
                "name"
              ],
              "type": "object"
            },
            "minItems": 2,
            "type": "array"
          },
          "shares": {
            "description": "Optional positive relative weights, one per participant in the same order, e.g. [2,1,1]; omit for an equal split",
            "items": {
              "exclusiveMinimum": 0,
              "type": "number"
            },
            "type": "array"
          },
          "total_cost": {
            "description": "Total court/venue cost in currency units, e.g. 96 for $96.00",
            "exclusiveMinimum": 0,
            "type": "number"
          }
        },
        "required": [
          "total_cost",
          "participants"
        ],
        "type": "object"
      },
      "name": "settle_up"
    },
    {
      "description": "Split one total court or venue cost across players, equally or by relative weights, and show each player's share plus the fewest payments to settle up. Use for a single booking or event. For recurring sessions with changing attendance use split_series.",
      "inputSchema": {
        "properties": {
          "currency": {
            "description": "Currency code used only for display, e.g. USD, EUR, GBP (default USD)",
            "type": "string"
          },
          "participants": {
            "description": "At least 2 players with unique names; include 'paid' for anyone who already paid, e.g. [{\"name\":\"Asha\",\"paid\":96},{\"name\":\"Dev\"}]",
            "items": {
              "properties": {
                "name": {
                  "description": "Player name, unique within the list, e.g. 'Asha'",
                  "type": "string"
                },
                "paid": {
                  "description": "Amount this player already paid toward the total, in currency units (default 0)",
                  "minimum": 0,
                  "type": "number"
                }
              },
              "required": [
                "name"
              ],
              "type": "object"
            },
            "minItems": 2,
            "type": "array"
          },
          "shares": {
            "description": "Optional positive relative weights, one per participant in the same order, e.g. [2,1,1]; omit for an equal split",
            "items": {
              "exclusiveMinimum": 0,
              "type": "number"
            },
            "type": "array"
          },
          "total_cost": {
            "description": "Total court/venue cost in currency units, e.g. 96 for $96.00",
            "exclusiveMinimum": 0,
            "type": "number"
          }
        },
        "required": [
          "total_cost",
          "participants"
        ],
        "type": "object"
      },
      "name": "split_costs"
    },
    {
      "description": "Split a series of recurring sessions where attendance varies: each session's cost is shared only by that session's attendees, then payments already made are netted into balances and minimal settle-up transfers. Use for weekly games or leagues. For a single event use split_costs.",
      "inputSchema": {
        "properties": {
          "currency": {
            "description": "Currency code used only for display, e.g. USD (default USD)",
            "type": "string"
          },
          "payments": {
            "description": "Optional list of who already paid what across the series, e.g. [{\"name\":\"Asha\",\"paid\":120}]",
            "items": {
              "properties": {
                "name": {
                  "description": "Player who paid, e.g. the person who fronted court fees",
                  "type": "string"
                },
                "paid": {
                  "description": "Total amount this player has paid across the series, in currency units",
                  "minimum": 0,
                  "type": "number"
                }
              },
              "required": [
                "name",
                "paid"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "players": {
            "description": "Optional full roster, so players who missed every session still appear with a zero balance",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "sessions": {
            "description": "Sessions in order, each with its cost and the names who attended",
            "items": {
              "properties": {
                "attendees": {
                  "description": "Unique names of players present at this session",
                  "items": {
                    "type": "string"
                  },
                  "minItems": 1,
                  "type": "array"
                },
                "cost": {
                  "description": "Cost of this session in currency units, e.g. 60",
                  "exclusiveMinimum": 0,
                  "type": "number"
                },
                "label": {
                  "description": "Optional session label, e.g. 'Tue 7pm' (default 'session N')",
                  "type": "string"
                }
              },
              "required": [
                "cost",
                "attendees"
              ],
              "type": "object"
            },
            "minItems": 1,
            "type": "array"
          }
        },
        "required": [
          "sessions"
        ],
        "type": "object"
      },
      "name": "split_series"
    }
  ]
}

What the leaf hashes

{"body":"afd11e5ce0fb00ef5a4d06ca0295bc8726d9b4b57b3cf15579da9f0e3004e7e5","id":218451,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793026554865379,"prev":null,"subject":"756f67f5-b143-4015-8ee4-c468d6880483","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. 0xf0fb7769eeaf8222b0faedfe107e21bd2d2b11b3a29ff8a4bf4e74527b1552fe
2. 0xd4f57d91a68df3584c716f860233e75a4d3c06683ccd430a563cd28f8dc549f6
3. 0x0b67b8c94a03dbaaf8dde3852213feffc4e7c36143de4700b519156ff6ae1311
4. 0x6eba27ab0e0d9e0b8d741d9418444505ed16d81a0fe71d3fd15e5b9c56c97644
5. 0x7816246a602d05784f1dd9e720e7522f75a5848aa0a68538e6da1799ee0e7506
6. 0xb3d1d9ea7378ce151b795e1cf185fc208bb030996d60b8b4d5d6f7072924f2a1
7. 0x532c5ffa165288667eecad141db716392b5361026dddb11a6d4898a2944e5d38
8. 0xaddd996b3ad73051be09018e4a1101457378c4d962819b0e2ebb246e08b03257
9. 0xbc309687327c2973348c0c4921ebcd1852025f9370a40fe3622a74fbff15fc25
10. 0x7d04371228279440387b9131e1ecd711e15d7ec89ef830b07659d5cf6474b401
11. 0x514d76e971925e71327eba8800da6dbdf3c60a7c174890b0694dc64fd775ac72
12. 0x4d2e94451b5ffc570a23dee9d1525bc305f1009994ffe23d8e2e7d45c60f6209
13. 0xa26f0437cba4d7d64f1cf98bf4f490e1ebb6f66a5e2331537b7ba8b3061084e0
14. 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae