Evidence row 3418582

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Use this for a quick yes/no: can players on two different platforms play this game together online? Returns crossplay true or false plus the game page url. Returns false with a reason if the game is not on both platforms. PS4 with PS5, Xbox One with Series and Switch with Switch 2 count as the same family, not crossplay. platform_a and platform_b must differ. For the full matrix of a game use get_game. Read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "game": {
            "maxLength": 80,
            "minLength": 1,
            "type": "string"
          },
          "platform_a": {
            "enum": [
              "pc",
              "ps5",
              "ps4",
              "xbox",
              "switch"
            ],
            "type": "string"
          },
          "platform_b": {
            "enum": [
              "pc",
              "ps5",
              "ps4",
              "xbox",
              "switch"
            ],
            "type": "string"
          }
        },
        "required": [
          "game",
          "platform_a",
          "platform_b"
        ],
        "type": "object"
      },
      "name": "crossplay_check"
    },
    {
      "description": "Use this when the user names a specific game and wants the full multiplayer picture: platforms, online and same-screen player counts, crossplay for every pair of its platforms, session length, whether one copy is enough for the group, and the link to its CoopGames page. Accepts the game name or slug. If the name is ambiguous or unknown it returns an error with up to 5 suggestions to retry with. For a single yes/no between two platforms, crossplay_check is lighter. Read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "name": {
            "description": "Game name or slug, e.g. 'It Takes Two'",
            "maxLength": 80,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "name"
        ],
        "type": "object"
      },
      "name": "get_game"
    },
    {
      "description": "Use this to find games for a group when you don't have a specific game in mind (\"3 friends, one on PS5 and one on Xbox\"). Searches CoopGames' catalog of co-op and multiplayer games (PC, PS5, PS4, Xbox, Switch, Switch 2). All filters are optional and combine with AND. With several platforms it returns only games with crossplay between all of them. Returns up to 10 games, most popular first, with the total that match; each has its CoopGames page url, platforms, online and same-screen player counts, crossplay and price. For one known game use get_game instead. Read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "crossplay": {
            "description": "Only games with crossplay",
            "type": "boolean"
          },
          "free": {
            "description": "Only free-to-play",
            "type": "boolean"
          },
          "genre": {
            "description": "shooter, estrategia_moba, supervivencia, sandbox, party, rpg_mmo, terror, aventura_puzzles, peleas, deportes_carreras",
            "maxLength": 40,
            "type": "string"
          },
          "how": {
            "description": "'local' = same screen / couch",
            "enum": [
              "any",
              "online",
              "local"
            ],
            "type": "string"
          },
          "limit": {
            "description": "Default 5",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          },
          "mode": {
            "enum": [
              "any",
              "coop",
              "versus"
            ],
            "type": "string"
          },
          "one_copy": {
            "description": "Only games where one copy is enough for the whole group",
            "type": "boolean"
          },
          "platforms": {
            "description": "Platforms the group has. 'xbox' is Xbox One and Series; 'switch2' is Switch 2",
            "items": {
              "enum": [
                "pc",
                "ps5",
                "ps4",
                "xbox",
                "switch",
                "switch2"
              ],
              "type": "string"
            },
            "maxItems": 6,
            "type": "array"
          },
          "players": {
            "description": "How many people play together",
            "maximum": 8,
            "minimum": 2,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "search_games"
    }
  ]
}

What the leaf hashes

{"body":"31c00fd3d99ff4550f08050064c2438415333fc17325d44932113974e1a879bb","id":3418582,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793890685568480,"prev":null,"subject":"e9fa5658-96ea-4e2d-b50d-497533b32098","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-05 (322504 rows).

1. 0x34d6ca5594ab5c860ea7fcedacae7a8b0140bb19c28081c426948fc673fa992f
2. 0x86dd7d6bd6dc5e31e31ae9b240f8539ac1563d911190d4a5d5455dc5cc9fbb12
3. 0x4e671f98143495b6bf76c19ef8ff77fb04293289da060446ca54f430f77a7cc1
4. 0xde0f5680af624a5d31e8097ae8226f1728effcc1f7aa8f56130193a4e18d4f41
5. 0xde2ea42b5c50c8c7914e9dbfb4754a066373e783fefc7b46993072d72f65f31f
6. 0x8f0110544f4d18251bcdd6e4059ff6b386457771456fe45579c35fcb9b88f86d
7. 0x1fada6008517076f732f0e7f69e1981e7b8ee5ee3ceb2ac652519212af66d848
8. 0x61bc89d9cff07adcf624eb615ebfad89416e4f507a4537366c0e5c2d64f1905f
9. 0xb4b3bee58e2e8e4b8ce3f533277e7512c409bc0390ac4c29141214e882a52675
10. 0x7070eaf083ef8ff4bd60141491939dc64ce770692f95c2045706ea5946c49bda
11. 0xab8624d6f340a65e0d28499eb2eee85d7d03714dcaa3ccd53f89384ceec33b12
12. 0x39d16124506d219f7bb491dfdcde1ef1ff97c0a696e8b4aa37ef641a1fe343ef
13. 0x0aa4ded22a78f5ec18de49ee58ef0b9da5ec2bc6cbd6ec1dd231d3bbcc9c5b87
14. 0x0a1f5b0870d88fe8fca791d84634f4f671d3fa8b4a971278db893d92051aa3ef
15. 0x883cfefa109428dc814deb63a0effe3eb85b3c5ad64045af0b1fa6d33dcf77d1
16. 0x4014adbe7dbae4fe239da4c4dde0e45d23e85623794ecea527ea1299bc689d6b
17. 0xddde0b0de5219c91c717b03cab5216193dc0f26fb006aa8ba17020a71dbd997a
18. 0xa9caf228b42660818160afb416ff04cb014f57c4d8ee75ea3452fb76c3d8c645
19. 0xf72fe7c4860b9addb17aac4a00b8afc2f8085836173f10f31697c3d192df119b

Day root

0x9f0215efb0252701dc86d5600ce95f276cccc716759bf112525ae863f698d128

Chained

0xc54ddff800630c6cd9656f99e7d6a61adce99bf1cea37121600598b0a9a720d2

Published

On Arc Testnet, block 70942081: 0x88f612ad94ca63af4e4e9faab9f34b665b41f03828afac1571ad013cc62bba94