Evidence row 3413972

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": "2026-11-05T13:38:08.883799Z",
        "status": "active",
        "statusChangedAt": "2026-11-05T13:38:08.883799Z",
        "updatedAt": "2026-11-05T13:38:08.883799Z"
      }
    },
    "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": "1.22.3",
      "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":"2513433bd06e0fda679b34fa491bcf54e1e78d85d2b5d8673cd1be87947c2ac4","id":3413972,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793888494941821,"prev":3395722,"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 2026-11-05 (322504 rows).

1. 0x8992e532f761fb802423449307950762b2fef93f9d2a79d1a36b41522f1893b5
2. 0xcee116b0c1be7c2a75bc84b1a598710c5680a270b27626909446a69d0fc0fada
3. 0xf593464ee0242e2ec899979bfdf4bab55ce82ef99e715913c5c65cea4ad602cb
4. 0xe1349c7824a87e488fb490c7aead5b87d4264fcd8b807b6be15e1445caf8801d
5. 0x15b5500c23658e58112f44ff550547baea3879ff74e7e8bf08eef4ec208ed495
6. 0x1a60e2ff56981430dd7c19d6922be10245fd4a8581cf9bcb4220f6451e85f0b1
7. 0x9d1a39e77cba4dcff6464e45807426f0ba3b45f4d93d51539de092e1dd42de26
8. 0x6f701a93e81f1f664e49ce07db394e121f660ff0dc06f4610fe3f65a35f1fc6c
9. 0x95cee6cbb8c00d17394faf851dc58f0ca443f98e32fb4ebfb3cec4b89eddbca7
10. 0x164e0755ab44b5a0798c28de8e3f6e01bc56f0aa06fbf2071cc86ac1bfb93dd7
11. 0xf48cfb224c725783bef8ce4285402a04ebe49ac77429520e9edcdc878bb0bae4
12. 0x7e8581639563b98aaa7081bcefbfd3cd60a397669f211d921b728e659e41dbf3
13. 0x3e9755642a246c284551c3b1f3b1218a5ae17ef8f2e97cf15758fe25ef2cfac6
14. 0xb09333620e45bd22d68e7eda9b4f6597d61b21df0d3c512813281cef1366dbc5
15. 0x1a1af412020b11baae1f58b16dc455a4c19a3c7ab9a1aeceb07083214f5a8b8e
16. 0x5c64b7138585466e7e8be72af6f3dc72c511db2c0c1dc5b6e34ad4e9456c2308
17. 0x7e5b4628b4269525ce0744fb873651b9d7be5748de44b7e6b858af09c7e30bd8
18. 0xfb4e1f4d701ae273fb0cd57757f659e327608e5561a752b2099b436618493c84
19. 0xf72fe7c4860b9addb17aac4a00b8afc2f8085836173f10f31697c3d192df119b

Day root

0x9f0215efb0252701dc86d5600ce95f276cccc716759bf112525ae863f698d128

Chained

0xc54ddff800630c6cd9656f99e7d6a61adce99bf1cea37121600598b0a9a720d2

Published

On Arc Testnet, block 70942081: 0x88f612ad94ca63af4e4e9faab9f34b665b41f03828afac1571ad013cc62bba94