Evidence row 1537657

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": "2026-10-31T20:56:56.199477Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T20:56:56.199477Z",
        "updatedAt": "2026-10-31T20:56:56.199477Z"
      }
    },
    "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": "1.19.0",
      "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":"5955f478bd60b1e79383557712cc547c425a2aa62cae2b57591f8e5a6354630c","id":1537657,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793481416049762,"prev":1503318,"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 2026-10-31 (246033 rows).

1. 0x49fc3ab1ab76b632ea8d2ef15d01fcbfd847be33c0adb9d578082de008ecf080
2. 0x82850d4e50ab64beccdf293e6ff36eaddaab446c7653b7146c074ae8ef01ea85
3. 0xab112b60ffb0ab922b7234f053f0963a68c8be5adafd33230dac64c56bfe9e18
4. 0x56aef2a77b6e55f575d54ac3865bae1d905f2aa44ebff7c25599ec3bb2afba75
5. 0x4ebeefe906e5fdb59325844f1e95c6b5ecc14c521bfd8ad2d0fa3ede9f27c50d
6. 0x4c898003dda092e7f096c5e62f33a886e2e02848b8085320d65c9864710ee7b0
7. 0xb5daf6925abb52e2afaf578373c88c0a7357621a0137df97ed0a2717b7ea1b65
8. 0x895ee2b69c5e88b3259af236141227af8298ae45972be6f66c58ae0a54b8867d
9. 0xc68a0b5c531ad691f95c107a4497fd63625c40e9dab3c74c5dac1f2f17172f10
10. 0xbef8518b80b6a0a69558c1f5095bfa0cbc44efa2a221311c6fedae65cc0e0779
11. 0x883fee38dbb96faa4da7db7cb311963c65c607a1f13fc50472ba1b74f3913bc8
12. 0x9b9bfe0f7c4b49488e779430f5fde32a8ca4b79e22388c99981f7f9857e2aff2
13. 0xe9c4303dc739b3a38473373ace0be2d0380fe87c373514f87ecf64e4a134918e
14. 0xc248f3640ff2a9c77f3134397896f3ef7b260859179e2912c528542dff5a29d2
15. 0x37f0ccf90cd9ba8759ef0154382593820880794592760020f095a3628e43fc3f
16. 0xad4540f06e3fdfe46524d8592f8d854d4849e16217bc047eaf024f0abebe34b0
17. 0xa00a931d72706fa2402bfc9b441a12eb7c6a61ff42a542916106e3637177f101
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0