Evidence row 60194

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://eventchat-events-mcp-production.up.railway.app/mcp"
    ],
    [
      "web",
      "https://urbanplayground.xyz/"
    ]
  ],
  "name": "xyz.urbanplayground/events",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-06-11T16:29:44.094987Z",
        "status": "active",
        "statusChangedAt": "2026-06-11T16:29:44.094987Z",
        "updatedAt": "2026-06-11T16:29:44.094987Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json",
      "description": "Live event discovery: concerts, club nights, art, comedy, and festivals across 14 cities.",
      "name": "xyz.urbanplayground/events",
      "packages": [
        {
          "identifier": "uplayground-events",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeArguments": [
            {
              "description": "Runs the stdio MCP server.",
              "type": "positional",
              "value": "mcp"
            }
          ],
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.3.0"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://eventchat-events-mcp-production.up.railway.app/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "ios/EventChat/agent-tools/eventchat-events",
        "url": "https://github.com/ZakKrevitt/EventChat"
      },
      "version": "0.3.0",
      "websiteUrl": "https://urbanplayground.xyz"
    }
  },
  "source": "mcp_registry",
  "summary": "Live event discovery: concerts, club nights, art, comedy, and festivals across 14 cities."
}

What the leaf hashes

{"body":"dd0aad0a6bf7279885dbbf9998e7c49bc25f5c7dc7e362bdee94e9905d1e2e69","id":60194,"kind":"listing","method":"baseline/1","observed_us":1793025448037967,"prev":null,"subject":"mcp_registry:xyz.urbanplayground/events","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. 0xa2b424d2bad8ac732ecbf73c24ebf912a49774115c79e100749d8cbf33262162
2. 0xf55f61b25f0b1a179a713919cf97ef64bb89cf462fcd4e7a0c9de15a2270e2d8
3. 0xfb0c514e9d23caf24adc7dd88ecdcdc52f9822c5a44fbfb4f34482867737c662
4. 0xacbd577587ef1f4e641e5d6db6c94151ca3ddf964de5bcfbfe64d1a56cf7a3af
5. 0x5d10b032ba2fe42278ecdfbfc3057c4675bc74bf04a656977f506dd5dac3c5da
6. 0x611d5238d8931ff443c5cf07d98beda0a7c18b11b4c6fc100f575225bb832327
7. 0x8b92d9dc2e709bce5f2a89de5d7d10e0f47cee5e5e8c10787f6527ac1b046e98
8. 0x282428da0cc2812b2aeb8ac1bc752cda0213b0cb101832851ec239459927f012
9. 0x502a5823cf001ec8a2d508629aa4ebb10cb60650ff6dd0ab9c4cebb840e0e4e9
10. 0xb3a29351e1b8013225f7601a802293835d75b405261ddeb88b2d8f50a6ded3ac
11. 0xd2bc27d81a73a53b7c724da36f189ebdd2fef396490722c3ee66192b798d20d0
12. 0x19537c574979327583a539261287714af2eee831125de819abab0f155acd3a75
13. 0xc34c13c58ba9c342ea1b833ac1882a4aea22777c4fd1092b2f83d3bac6b9f845
14. 0x428106f4ae4ec142f17aebf6fa50935242f8d3f1c211cf95d6351d03d11da2b7
15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae