Evidence row 564170

What was observed

{
  "count": 2,
  "tools": [
    {
      "description": "Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "depth": {
            "maximum": 18,
            "minimum": 1,
            "type": "integer"
          },
          "fen": {
            "type": "string"
          },
          "maxPlies": {
            "maximum": 40,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [
          "fen"
        ],
        "type": "object"
      },
      "name": "best_line"
    },
    {
      "description": "Evaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv. No mocks — a real single-threaded Stockfish 10 (asm.js) runs in-isolate per call.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "depth": {
            "maximum": 18,
            "minimum": 1,
            "type": "integer"
          },
          "fen": {
            "type": "string"
          },
          "multipv": {
            "maximum": 5,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [
          "fen"
        ],
        "type": "object"
      },
      "name": "evaluate_position"
    }
  ]
}

What the leaf hashes

{"body":"72c89f5500c62b6a77e6eab8278e4451260cdc1cd6b5290e817f22256f644ce3","id":564170,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793137764483223,"prev":null,"subject":"05e52b1f-b8e6-45c6-980c-917b2598d087","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xe59c94070ecf776ea42bf6a5c40101f997e0702046975b5fff18121af6b05d72
2. 0xab3cabf7b4ecbe053837b2bae30e920f01c4a794dfa8795bb7ed981f8c28e132
3. 0xedeaf88724f749230ca0faa391ebe94fdafffb51d26782902e01ecf775caf3f9
4. 0xb9f0324bad20458ce5dacc7b16282c00da201491861d1945dd82fa4cf88a9ee2
5. 0x645cffba6c34367613fb28b8cd718b189e730986a7c05ac6d2098a5a6b1a9baa
6. 0xd60bd1639a2bd01095b9834cfd6724e9447ee6a2d7d82a7cc3e7fa0a91c4ffef
7. 0xedcd4f1a3f487c7f25fe6a259bbc77b3f4fcfd1d2ad3790e881275a69f9d1a40
8. 0x7f231e9a2231ffb7e6e0110dd1eb0cbc2d42307c333a84c57bf8e881745d45c4
9. 0x37a178f65e27aecf17fe3e2640e953536bd324176e14bd81700f38a996a90a95
10. 0x8338045dad3473c7ac19429309a0433c2c9bd60a96c01bcc87ef42a1157dc02e
11. 0x002b13cc3ed137330ceb329ee87ef5c7f1d449d6e74a27e573a5c750d915c731
12. 0xc1d2a56a84338ae3b69b3423e631069ac48cf802439f26d41941f651ac2c28a1
13. 0xd98ea318b514153f74841c90aff18a807e61314ec99610bf3bdbb7219da01cbd
14. 0xf72dee7a0c7534cb19ede4959b957b00c0a8285c36ad49dd2ce1c1092bf60d93
15. 0x24e3e2bb8ee1e8d20756de35f0e0c4ec8eb1f193bd2cf3f077ee1f92f211c34d
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4