Evidence row 1012084

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.chatstack.app/mcp"
    ],
    [
      "web",
      "https://www.chatstack.app/chatstack-mcp?utm_source=mcp-registry&utm_medium=directory"
    ]
  ],
  "name": "ChatStack - App Cost Estimator",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-29T09:54:27.697932Z",
        "status": "active",
        "statusChangedAt": "2026-10-29T09:54:27.697932Z",
        "updatedAt": "2026-10-29T09:54:27.697932Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Estimate development costs and hours, scope an MVP, and write a PRD with user stories and specs.",
      "name": "app.chatstack/app-cost-estimator",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mcp.chatstack.app/mcp"
        }
      ],
      "title": "ChatStack - App Cost Estimator",
      "version": "1.0.0",
      "websiteUrl": "https://www.chatstack.app/chatstack-mcp?utm_source=mcp-registry&utm_medium=directory"
    }
  },
  "source": "mcp_registry",
  "summary": "Estimate development costs and hours, scope an MVP, and write a PRD with user stories and specs."
}

What the leaf hashes

{"body":"3d839d5c076e7ad413d07e5849a7f3823c7424f4ca0441f1132631bf8dcc6577","id":1012084,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793268783537064,"prev":null,"subject":"mcp_registry:app.chatstack/app-cost-estimator","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0xed3e325b59d9c9ed769100dc69365140094cc86c44166ac8606706ce957a0127
2. 0x80eaa6ef9652e0d1dd6e871049c2f91b3e78e67b9471f6f8154f75163661bc08
3. 0x7ebe2735af48f781f3aefc2b475fc97b6c04c66922a8743f4438596a8c497878
4. 0x076ced4cd5932f516ce0c427403fe0121bf745ddd284191b4837550683ede709
5. 0x987021906559f879962128b292840b91abc6f2d60a8ea90a987d496cf3bc9796
6. 0xe075561678970e1109492b39db507699a3abc0ec8740d0f102cc9edbab83219f
7. 0xff2a4bb93419022f18dfc34822c48b94402d724470785eb6998b36532f5e6fc4
8. 0xbf50c1cba6de204cb24f193b28c5739bc8e682950daa9e214572e64004fd4e51
9. 0xc3c829be2b05e11797a1a5714f4458e77076a55f8a1ffd8b602a9b3e724b200c
10. 0x3d471f98110498b9693ea22ece087c65b6a588eea74da729c9d2b2d271e68867
11. 0x6422287a0754ba764d694334179e6b034a40c4f764f69738f4765bc81488056a
12. 0x156f22ba1687235d0261827bae6586f93e2a2840145d269c10cd2aaaa77859ab
13. 0xd859aa207a49a75c74466a67b0aea90b4b36aafb58c39ccec12a122ee264cece
14. 0xdd7eee8bdadd60ea2c845df144e254573e75dd4221ce0c344f92f184bcc69afd
15. 0x1623e28c5fc42dfa00ec1935da937a96d5bbf27124e83666dc61efe8facbb339
16. 0xa034ebc8d117fbf1ed466b70baa0478bf213b743e1a41cba1d2da7a9f310184d
17. 0x1597ec94933260048e5e583aff1ad0fd44cc49efcd0a994091ed5db4924d7b02
18. 0xe01539ac4c9f9cdf265a9e5c6d99c8da11e70ff0c7175fb23e402d33b9d79785

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1