Evidence row 733105

What was observed

{
  "endpoints": [
    [
      "web",
      "https://github.com/smdesai27/math-board"
    ]
  ],
  "name": "Math board",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-28T02:11:38.600658Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T02:11:38.600658Z",
        "updatedAt": "2026-10-28T02:11:38.600658Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "A local, view-only chalkboard the model draws on: equations, plots, molecules and diagrams.",
      "name": "io.github.smdesai27/math-board",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Set to 1 and board_open only returns the board's URL instead of opening it in the default browser.",
              "format": "string",
              "name": "MATH_BOARD_NO_BROWSER",
              "placeholder": "1"
            },
            {
              "description": "Folder for this board's autosave and named saves, used as given (PI_MATH_BOARD_DATA_DIR, the old name, also works). Default: the mcp/ subfolder of the board's data folder. A plain checkout keeps lessons in <package>/.data; an npm or npx install uses a per-user folder: ~/Library/Application Support/math-board on macOS, $XDG_STATE_HOME/math-board or ~/.local/state/math-board on Linux, %LOCALAPPDATA%\\math-board on Windows.",
              "format": "filepath",
              "name": "MATH_BOARD_DATA_DIR"
            }
          ],
          "identifier": "pi-math-board",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.3.0"
        }
      ],
      "repository": {
        "id": "1436120036",
        "source": "github",
        "url": "https://github.com/smdesai27/math-board"
      },
      "title": "Math board",
      "version": "0.3.0",
      "websiteUrl": "https://github.com/smdesai27/math-board#readme"
    }
  },
  "source": "mcp_registry",
  "summary": "A local, view-only chalkboard the model draws on: equations, plots, molecules and diagrams."
}

What the leaf hashes

{"body":"4f84bf8edc197bba9b44ec8c2cc395ca0a4a0c6c28c785b48622de7c73b46b03","id":733105,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793155277546862,"prev":null,"subject":"mcp_registry:io.github.smdesai27/math-board","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x79de5160a8cbb4cb025127d0c85177511671a6e88b8c9db929cdd9b1947891dc
2. 0x4adf69b55b8602ca0c239ddd6e1a2019c50a54fc92a90432e8318d2f71fd81d5
3. 0xb927f30217e0ac08b8dca773f6aef9d127e1596f859475cf047583581b144b9c
4. 0x5cb861a0eac79a45bb4fb5a6308734319f3701bcefb34240ca5d87d243cdecf6
5. 0x419dc9f7dad43a423c30c16f29b421596839cf813065749d7d912f367f911309
6. 0x9bfad4498caf8a7be7624673f20efb16eade0a571679e19c867f81efd87f184a
7. 0xcb5505d0ba6bd0c3aff9973157c33c4f41d7c475a9304710c7b3f04da6f01832
8. 0xa4975c1a5ad09ce3d3acdf15fe6286c7982509548161f68259703ca288d06857
9. 0x703e697535b7a29deeb031f726731f991d19e44bd2fe84824b5696a4a7650b23
10. 0xd6e611b3b7733bf46b7366291661346a628e816d6840f9f5b29bb8970cdeb094
11. 0xd7b6f3791d679b5e1ec9209128252cc85037c888c183b65a574fb24c9f62ed05
12. 0x14bc09b6df5a608be5eb21fd732d89ed12cec17a5315a631f36ba8d1ba314ab3
13. 0x95d7bc27dc9ea43e607251bd7e1cdfa9e00b59b71051b5db78fe06bf25becc5b
14. 0x40581185279a8bf075dca3a4c3a5648ec6f62098ba7402cbc097d5cc707e0840
15. 0xab4e84d781dccd579dcf5c47a356a4a2e6cac58a2aefdf3543a3fa15238fa4db
16. 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae