Evidence row 245

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://alchemist.olbrain.com/mcp/"
    ],
    [
      "web",
      "https://olbrain.com/developers/"
    ]
  ],
  "name": "Olbrain Alchemist",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-26T14:00:52.647563Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T14:00:52.647563Z",
        "updatedAt": "2026-10-26T14:00:52.647563Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Build, test and publish Olbrain AI agents from Claude Code, Codex or Claude.ai.",
      "name": "com.olbrain/alchemist",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://alchemist.olbrain.com/mcp/"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/Olbrain/alchemist-plugin"
      },
      "title": "Olbrain Alchemist",
      "version": "0.8.3",
      "websiteUrl": "https://olbrain.com/developers/"
    }
  },
  "source": "mcp_registry",
  "summary": "Build, test and publish Olbrain AI agents from Claude Code, Codex or Claude.ai."
}

What the leaf hashes

{"body":"20a143a55872c80565e4907e411dc529fb9ccdaa18702eca8a73e244c1f8b52f","id":245,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793025220727222,"prev":null,"subject":"mcp_registry:com.olbrain/alchemist","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x937ab12e1448ff12cc610b4548836aa212632256f5fc195a236829ddbc5fce11
2. 0x8fd42376b381484a989f3938982ed92a5b187b3e6d1400a14fac526508a8980e
3. 0x84a2046e6d8d95d6bc861afda8034f50c91a033520855c2251bd6394db81557c
4. 0x9ad9369dcb964e5b7f6613d6596a8582879079e1592a867bf06846d1fe341185
5. 0x398ae3c15a683275e8be48dbfc5bd5488977857838c31c48a67b297613999d8e
6. 0xd5d6be2e4f6356f08531266fe398269de2c39abcfc378b2f6b97207180c924d6
7. 0xd11b2cd218922f4b2b6ccf0b83232991fafd9e87d086da49afec87e45bdb3cd4
8. 0xf10bbe3177c7f1c62a61bd89a66265a4c2a5256b209ac9feefcb8110e95626ba
9. 0x9c935e0d4bfff802c2c603de72b42f45c679ee9ab100bb7283c50b183356680c
10. 0x1452bac1c16ed1a13fd24d016370307a5402f74d73cad5641a5508fdb4d2c5cb
11. 0xcd52656344e352446858a7d55feb9336b07dd3ad98715c122aaf69d4eb3d6ca8
12. 0x3b55f6d5345bce3e1332e014f19526d25328fb6283d3518837a015c3621c0d1c
13. 0x45c1d3062bbe98a6b1540c7e2ccf6516eedd6ef07fdfeb1ba77ee6272970447c
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae