Evidence row 737876

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.send16.com/"
    ],
    [
      "web",
      "https://send16.com/mcp"
    ]
  ],
  "name": "Send16",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-28T03:11:37.897522Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T03:11:37.897522Z",
        "updatedAt": "2026-10-28T03:11:37.897522Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Email, SMS and marketing automation: campaigns, contacts, automations and stats from Claude.",
      "name": "com.send16/send16",
      "remotes": [
        {
          "headers": [
            {
              "description": "Your Send16 API key as 'Bearer sk_live_...' (Settings > API keys in Send16; the free plan works).",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization"
            }
          ],
          "type": "streamable-http",
          "url": "https://mcp.send16.com"
        }
      ],
      "title": "Send16",
      "version": "0.5.15",
      "websiteUrl": "https://send16.com/mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "Email, SMS and marketing automation: campaigns, contacts, automations and stats from Claude."
}

What the leaf hashes

{"body":"b375d46cf221a6ec12bdc169ed8ee77662e07963699472b081bf694f70a02f53","id":737876,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793158878331831,"prev":null,"subject":"mcp_registry:com.send16/send16","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x8668c0ffe3715aafef7cbc9d63926a47879ef1a7317fccbc43080b65ab0429ac
2. 0x8e660c7694737fdedd65c651cbbe413b70ea55f72c2cc499a81a5cfd5d0c3419
3. 0x1e3f3c16b178a23e998c68a733b470203c4c6f41d59d09b662d9df6070eb83a3
4. 0xe604731a5ae869fcc99307bb15513d0dda0b7080fbd3f5b1fa4425eace2b1228
5. 0x9c8d746460a9259b67846d48951c7d3a522bd6d99e31f63696812bc4c82e3c10
6. 0xcc985edc7c6a55bf0961f1a293a13dd5790c79769bbb2a3cd990a42134b9f9d9
7. 0xf439de109e349e7d0b4c910e995abc00f62381dd5341d4505774f6feff04142f
8. 0x95ff35af8f25ddbd55e65895a77c0f30ff9daa0deefb5f9c33393c53dfd57f3e
9. 0x4795f3794f53c3ce2f5e2a31e7702a74ba199146f310737056eadaa794899eb9
10. 0x0dce071d5d474142bac9799884f060e0f9e03a061e9d23332d0b9f2d678a012a
11. 0x8baa84438844480e4ee85191a514de151ac6e3130f3e0168f008268ec0f9b588
12. 0x957e0fe7e44c7e977b527d6154fa62586de112339e5f55ca34172d17b3a46c4d
13. 0xb072324629a406cd3cdd7c16d50237ad36e849cb87524d54ccd21e2d2c94de51
14. 0x91b395e5953edc1b4bb2db979b59b2d9a20f0df47d841196dccdb5128537aaaa
15. 0xe2f9c120d14f36fdddf9b4e605c5d0b8a13b835e2380472255dc22e14b93e84e
16. 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae