Evidence row 801036

What was observed

{
  "endpoints": [
    [
      "web",
      "https://mailtester.ninja/integrations/mcp/"
    ],
    [
      "mcp",
      "https://mcp.mailtester.ninja/mcp"
    ]
  ],
  "name": "MailTester Ninja",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-28T19:27:43.781634Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T19:27:43.781634Z",
        "updatedAt": "2026-10-28T19:27:43.781634Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Verify email addresses live against their mail server and find work emails. Nothing stored.",
      "icons": [
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://mailtester.ninja/wp-content/uploads/mtn-integrations/mailtester-ninja-logo-512.png"
        }
      ],
      "name": "ninja.mailtester/email-verification",
      "remotes": [
        {
          "headers": [
            {
              "description": "Your MailTester Ninja key: a free API token from https://mailtester.ninja/free-email-verification-api/ (50 checks a day) or a paid key.",
              "isRequired": true,
              "isSecret": true,
              "name": "X-API-Key",
              "placeholder": "sub_... or mtf_..."
            }
          ],
          "type": "streamable-http",
          "url": "https://mcp.mailtester.ninja/mcp"
        }
      ],
      "title": "MailTester Ninja",
      "version": "1.0.1",
      "websiteUrl": "https://mailtester.ninja/integrations/mcp/"
    }
  },
  "source": "mcp_registry",
  "summary": "Verify email addresses live against their mail server and find work emails. Nothing stored."
}

What the leaf hashes

{"body":"5f8714fdca1bdc6125b3ca1a5f19595a9f51d14b2023140adcad06167276cb62","id":801036,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793218353309088,"prev":null,"subject":"mcp_registry:ninja.mailtester/email-verification","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. 0x5ebf2878e2c279b9c66c8b3898f515aaf9811b65344283c49ed880845158af07
2. 0x3f262150f1b2390468ddc0468eb8242b7adca0a5af54b0a20e641bb3cc25522d
3. 0x6d5004b7b277a74e8dfe9c4f4ff27b65ac2dee0eadbce49f460bac1c930d3f8f
4. 0xce025ea42b42dfd78a7a9af78ddab95afdab8cca0a297e7c9c138d3a0759c9ca
5. 0x8d6c4c83a2b178acf9af27724792ce698e772f9a8dffb00934167bea282154b0
6. 0xf836819aefac58c5f04e2992b3922d2a405ce0058bd36a9886dccb7ce1737867
7. 0x7a632db659372ffff118ac07e8dfe56d417558b0c2301601758340d5b2a73cfd
8. 0xb0cc5e1ae07544892ce08a2f6780f107d6170a55e2394431a15c2a4768e0f48e
9. 0xefeed2a6d1b55e3dfdbc25ea14b54f32260d770a42c9f591c47b8710fb6459dd
10. 0xf4903925dad6769820fcf5a22a7a275598a9d1ffc8b71e8d5547219645eda8de
11. 0x60092baa15b626d1471c65ad922fee1e1ef25ffe6ce503b232a651d88ee4db38
12. 0xde0ed5a99a265aff1ac56d5267182affd04ee042cab0cdeb668f49339e723a42
13. 0xef15c536e795866a8bfb1b8a73e9760d27d138ecef7ee9cc237288f3c6490bbc
14. 0x8db2587099a4011758c742fc2aad940742aa47abddf6007f131e0d5ab4a9e92b
15. 0xe6054de1f67b1e6f15bcf16d2b6536cf35dd9705fdf6ce59853e79784693ab5f
16. 0xa99a40fe210d675bb6ab72d4bb72ab40eb44ac345773c457fbe58e67a47b03df
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae