Evidence row 2546204

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://addevent.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/addevent/"
    ]
  ],
  "name": "AddEvent MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-03T07:15:41.305631Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T07:15:41.305631Z",
        "updatedAt": "2026-11-03T07:15:41.305631Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read AddEvent calendars, events, RSVPs and subscribers; create and update calendars and events.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://usefulapi.io/icon.svg"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "256x256"
          ],
          "src": "https://usefulapi.io/icon-256.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulapi.io/icon-512.png"
        }
      ],
      "name": "io.usefulapi/addevent",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://addevent.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/addevent",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "AddEvent MCP by usefulapi",
      "version": "1.21.1",
      "websiteUrl": "https://usefulapi.io/addevent/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read AddEvent calendars, events, RSVPs and subscribers; create and update calendars and events."
}

What the leaf hashes

{"body":"cb11f843a96e053628e2805ce72631547a9df936917403f05a7315dc8d2f14e1","id":2546204,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793690343024021,"prev":2129981,"subject":"mcp_registry:io.usefulapi/addevent","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-03 (425475 rows).

1. 0x857cdcfa428ff3276d89da3192c0a9687879b3bd18a134db964c3ba77fcd4119
2. 0x5ba0b525fe309f58c2368805f1807320556e09f388ed96ffc73ae1ae2be2d749
3. 0x9dcf6ecb700f8d91a854eaacd6e8ed2b694e2e918f0643428857ee19d4105bfd
4. 0xdc1ec172dcd18cbd9e9360f4027d7e4cd92da01cd388c496b87f99a1a84e6521
5. 0xccfbfe6425c043d171578b26b0f836e6cefc2cdf757b527acb8aa89aad5b4fbe
6. 0x5a2d5a057a2a16f07507d9d5c45d3e6fd99e646b1a2987a9bccf824d87f28cfd
7. 0x55f0cb182fe1ff01a92a8d3bf149cab3d33926ddefa224e84a0a26e7ad84c6c1
8. 0xb094f9f81ecbabf4fe4f7b336787cae139bd20c552cdeeebd80ebe2d127548a9
9. 0xed37707be387b46120d74a5e0af1b4f4ef733caa45ef4b339641088bffe3b4d9
10. 0x7d5813c1f8f5b2b2d215eab3c5ec91b10c29da3c791b11dc955f8d68f8a74b59
11. 0xd37dbda57f52b39f2040fc960342548b09bfcf0bfbb692dbff17cbbca0dba4b8
12. 0xaef81b61033fee85d110126aed81fbcb0cbee16e8087bf4d35e2e6fb074eba13
13. 0x9fcad7b6a3a72383a675ff1c88984ed98f2e83727da75d3965a28fb3c0515c37
14. 0x2c7b214378c568c43cd230b3af22d5b7530813ac1c6dd11bb8169f29d025bb3d
15. 0xd7fa57d9cb0ff551366a474cfe5dd932be199a84a12f0b57b253725627acf8dc
16. 0x4f4b24a0a0ca0387085210387f5358e81c7f788419e50cf11713524585340a3c
17. 0x271a5f715272513f57457682f93389885577f2664b5ae5dcea924ad10a098eb5
18. 0x717b5d7cbc24826c5b1f7b7433bf30b76e9ba1370476af4e1b494a5211897cc3
19. 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7