Evidence row 2983613

What was observed

{
  "endpoints": [
    [
      "web",
      "https://mathboard.datapad.tools/"
    ],
    [
      "mcp",
      "https://mathboard.datapad.tools/api/mcp"
    ]
  ],
  "name": "Math Board",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-19T09:49:00.289755Z",
        "status": "deprecated",
        "statusChangedAt": "2026-11-04T08:49:31.085897Z",
        "statusMessage": "Renamed to Notematics: com.notematics/notematics",
        "updatedAt": "2026-11-04T08:49:31.085897Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Maths lessons on an online whiteboard: solutions, worksheets, graphs and geometry, opened by a link",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://mathboard.datapad.tools/icon.svg"
        }
      ],
      "name": "tools.datapad/math-board",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mathboard.datapad.tools/api/mcp"
        }
      ],
      "title": "Math Board",
      "version": "1.0.0",
      "websiteUrl": "https://mathboard.datapad.tools"
    }
  },
  "source": "mcp_registry",
  "summary": "Maths lessons on an online whiteboard: solutions, worksheets, graphs and geometry, opened by a link"
}

What the leaf hashes

{"body":"4200b2acf3af8d8574bd0fed0e43f35f0c6539d4ec8b1f475e1c107a3826557b","id":2983613,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793784023050502,"prev":59421,"subject":"mcp_registry:tools.datapad/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 2026-11-04 (424109 rows).

1. 0xe171c89863faa49da882b90dc2ec453fc015d98e1674d2cca5245b8a8dc8498d
2. 0xb2272b628b6a39fc1b61861984412cf2b80ff7b4a354090e76b013cb1cc3ba21
3. 0x67ee2a640eb18ca4eb81f2ee6832d527310f34e715199dba4cad8becbaf37bad
4. 0xf6bb5240196b7610a2cd1f0ce033b89f8aa163b7545fa3fcac2cd7828374f98f
5. 0xadb7205fd9ccfc24af494e3ca1cab6bd33cf8d008b863fd105380cf46ce05ebd
6. 0x852d74b36884fb7e71ae7be70a6e0d5ec7eb78ec6a0cc13af5e01830d724cf02
7. 0xda8a1cd1dd32af52e8b319463fcb38610213aaa135c45a176f4f0c5868275e92
8. 0x53dfb41285600bc313851c71b2eb7cd451cdbe4dcf2c1f7687451260fd0633a3
9. 0xee0a7b748fae41f28bf8de467473940b3dfcb3249a9f4c12c1a2cf047807c293
10. 0xd22a7e189ce1959d80d4df367ae3b4c99bc4669dc1bfd1d381124cf385ac2c0a
11. 0x6310305f3b282903d3d0866e55e862f99c044e0c1846fbe336d3d58396766693
12. 0xc440adf4c0ccca685bc8e3e75f380f14f3f08f11da4b82473b03d261aac623dd
13. 0x1be32cfc4a94d533b6715445b00522e11316492d9e54e446cd74e7aaf61b3b9d
14. 0xc76edf7c58295981a8b2d7f51e60517f029cdf9eeea7cb9427318525c1879cf8
15. 0x4720135dc0f8960ddf4e33d6d1c6326cf5957dbfcb5082125bda6c5dbe57f8db
16. 0x621f050d36e1026696df95e35f6767fff738c18d7486aa88506e941d484ebef3
17. 0x7efb735f8d49bcac59a20b148718d382f32a05352c0255ebbd501ca73055453d
18. 0x9c1c771179da4a002386557e8601b2d4983c3e366808477ee20da18c282c1dd8
19. 0xbb1998892a86d9633ea7b5de06760114b45777da649c217062ff0d65d7095f34

Day root

0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee

Chained

0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b

Published

On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345