Evidence row 56098

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.quackr.io/"
    ],
    [
      "web",
      "https://quackr.io/mcp"
    ]
  ],
  "name": "Quackr",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-06-18T08:00:52.887913Z",
        "status": "active",
        "statusChangedAt": "2026-06-18T08:00:52.887913Z",
        "updatedAt": "2026-06-18T08:00:52.887913Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Virtual phone numbers for SMS verification, OTP receipt, and number management.",
      "name": "io.quackr/quackr",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Your Quackr API key, from your profile page at quackr.io",
              "isRequired": true,
              "isSecret": true,
              "name": "QUACKR_API_KEY"
            }
          ],
          "identifier": "quackr-mcp",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "1.0.1"
        }
      ],
      "remotes": [
        {
          "headers": [
            {
              "description": "Bearer token in the form 'Bearer <your Quackr API key>', from your profile page at quackr.io",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization"
            }
          ],
          "type": "streamable-http",
          "url": "https://mcp.quackr.io/"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/quackr-mcp/quackr-mcp"
      },
      "title": "Quackr",
      "version": "1.0.3",
      "websiteUrl": "https://quackr.io/mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "Virtual phone numbers for SMS verification, OTP receipt, and number management."
}

What the leaf hashes

{"body":"4aafb164b552341220cc9f390b718fac888c50a5ce526657679a615dbc23e0c9","id":56098,"kind":"listing","method":"baseline/1","observed_us":1793025436514769,"prev":null,"subject":"mcp_registry:io.quackr/quackr","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x2187a68d2bd5e995ba6e0f3e6f50a2aec9d449c36615172af23ac0e7e77978cc
2. 0x91689f676b98ba7a9ad94a2dbb88c37477b6d4044962f79a6c01335bae0a4279
3. 0xeae87e3469c342979aee0dcd4e032381ef9ee4683297786e3ec3cb323714d1ac
4. 0x488c18d2d641cd7d7382332d921b4e9763f85d0f4362d60e748e43569336cead
5. 0xd54404b5748fb1d34fca6b205413ad450bd26bf5a5b8c7de741161083eb8521a
6. 0xfc7ab8089723fdae09e2e08d3271d9017790ea3376688b916b24312a74d7bd53
7. 0xa897c0d3be49fe761ed1c3081b1e3655e4bcbeb1c3280b2b4070bf8daa354c07
8. 0x79a7b7c27d04a990e83d3172fd194fd58a49c89eb00527ffafc36f40559bc2f3
9. 0xc8d8ba70110d460f988fd2b057e677cbc713f91a024845889e76201c8f934e3a
10. 0x52a03554eda198dc4680d30e566c1eda71c25f02648bb3a67df331bf196cafc1
11. 0x71f472bb5c514dca2395c7842916e5cae63a9c622d8bc8f84b07a986c5ba91a1
12. 0xfde157310fc8513767b162378ca9ceefb2937c374b7381a8887f7ccba8ab5a80
13. 0x9d75d4d3ab6219edefa04be60b32fdd56be7a7672f370a5115f02f7b098ecd27
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae