Evidence row 566731

What was observed

{
  "count": 1,
  "tools": [
    {
      "description": "Returns an original number puzzle (Target, Cage Grid or Brick Pyramid) at easy, medium or hard, with its rules, the puzzle as JSON, an SVG image URL for printing and, optionally, the solution. Cage Grids and Pyramids have exactly one solution (solver-checked). Use it for math practice, classroom warm-ups, puzzle apps or a daily puzzle. Free tier 50 puzzles a day without a key; paid API keys (Bearer) for more.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "daily": {
            "default": false,
            "description": "true = today's puzzle (same for everyone, changes at 00:00 UTC)",
            "type": "boolean"
          },
          "include_solution": {
            "default": true,
            "type": "boolean"
          },
          "level": {
            "default": "easy",
            "enum": [
              "easy",
              "medium",
              "hard"
            ],
            "type": "string"
          },
          "seed": {
            "description": "Any text; the same type + level + seed always returns the same puzzle. Omit for a random one.",
            "type": "string"
          },
          "type": {
            "default": "cage",
            "description": "target = reach a number with + - x /; cage = Latin-square cage grid (4x4 easy, 5x5 medium, 6x6 hard); pyramid = brick pyramid of sums",
            "enum": [
              "target",
              "cage",
              "pyramid"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_number_puzzle"
    }
  ]
}

What the leaf hashes

{"body":"9067ee5f00d45f7ff33ec38564d8319105026b2998155f96e24b2a7dd02ee54f","id":566731,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138518544302,"prev":null,"subject":"8090bce1-18d9-43f3-aa36-3bbff3d789c9","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. 0x49dea7899e4945f3f45a9ec5838f4a058c42832688503aa5d5b390197e171299
2. 0xba5b4b3e110d141d576fa470191790e5e0e6d6408f81efcaff2f15747d423e60
3. 0x1ecc0a477e6443e06dcf10f04123bf888e06b823a3ab36e371e697d251619f54
4. 0x7391b617c2c7049f1e89744bf48c276a84343f7cbd02c184f76a2b4903347faa
5. 0x02367f2e93ffed5d344ed3ff6cacaafcbe22d1d6bac2cd4c2d6b1685aeb09949
6. 0x4999068f50c8446f5d968360572bb44e970a85224f69e85c4c4b2a01cffda7d8
7. 0x85de22199e3b6ae8a2428ca24e81b2964ee740483980fbdb3d48afe6aa89ec31
8. 0x918e2cfc4503923075ed37bc4e77da4127f0cddceba65a38413ee8b11989e763
9. 0xdc245ee3f64b125c5b5c815c91f7fa4cae2c66f7ec82b7d8b5587498f7e9d6dc
10. 0xb10850e339c5cf611e925dab76011103589037f8925a4c500fe5fd647316ac9c
11. 0xf38b609ad597fce93b27c195650b896689a01ed74ab6b03ca25db0fce3815293
12. 0xa6ea35fd4950cdcd8e7e5b8dcbb37883deca6fa621672fcdbde7ee38017f71bb
13. 0x150dc531eedad3837a4be47dd0bf1a84bf98feb63216c125982425fda525a3fd
14. 0x80ede9e5d428e39db26928b1d08254ff1241f1d7e091fd2e57130fbb4423162b
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4