Evidence row 512274

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://api.arettic.com/mcp"
    ],
    [
      "web",
      "https://arettic.com/mcp"
    ]
  ],
  "name": "Arettic",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-27T16:26:38.094858Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T16:26:38.094858Z",
        "updatedAt": "2026-10-27T16:26:38.094858Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "One key for agent data tools: emails, companies, search, scraping. Pay only for results that pass.",
      "name": "com.arettic/arettic",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "An Arettic agent key: sk_test_… (free, mock tools) or sk_live_… (spends credits).",
              "isRequired": true,
              "isSecret": true,
              "name": "ARETTIC_API_KEY"
            }
          ],
          "identifier": "@arettic/mcp",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.1.0"
        }
      ],
      "remotes": [
        {
          "headers": [
            {
              "description": "Bearer followed by an Arettic agent key (sk_test_… or sk_live_…).",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization"
            }
          ],
          "type": "streamable-http",
          "url": "https://api.arettic.com/mcp"
        }
      ],
      "title": "Arettic",
      "version": "0.1.0",
      "websiteUrl": "https://arettic.com/mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "One key for agent data tools: emails, companies, search, scraping. Pay only for results that pass."
}

What the leaf hashes

{"body":"ce8aee0cf4bf53239532e601424d5cad2943be2c9744961f3920438a805b64c5","id":512274,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793118544103258,"prev":null,"subject":"mcp_registry:com.arettic/arettic","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xfafef3b7e3c86e20aadffada31ab004d5eb609db5b383eeeb05cf5496b0f20ae
2. 0x396b3ec2b36216d59e5c3852f41f8b3907b0c2ee17dcaa33200db0bf0c870f51
3. 0xc8c575c58c0465b66e372cd272d5da3ce8c8190124a654f748ad430a495b9ef1
4. 0xf8dc1c54672a16d8f389cd1c0ad8981d6e5e3a2906fdbe61d7b142039ea22a17
5. 0x4ea1e78a523dfd69b8543bcf675576da66a3196f9c3bce0ec5db739a5d774e07
6. 0x2ca47846e1764d3f18007260516c10440465e0ec3aaf907ab31709e990e32262
7. 0xac6a49da3f02899a4ed42439e8dbe3f068d58ed43eb9d5beb904c51024a8774f
8. 0x210a84a54f40ae568c09b0dcb7010de7a834929f9646a4ca60e71517552eed8b
9. 0x2b7cb1d0cd07c3239c778eb8f901a3a512a5c26345f082aa15581455cdc94c08
10. 0x73db7e0985a84344e3158d3319a4e18db8b5cb3dec702c1e7fda3154c276f4d8
11. 0xb79afe573322beeaf10115333840af7581c0f1a3d89119e0bbb5881311429394
12. 0x58215df828d47943a710362ab6e17ad0eb4a7c42a13dbec3ab2635d1abf3945f
13. 0xf24b37f8ac293f5328e3e6b28cf868989fe99debf025c153c0d9a1698e846e25
14. 0x94d3785ce9330e4580bccada5459380aa2aac76a0bf11354d1353b375afc17d2
15. 0xb5b652bba4a5afca56c21031d89b1c06361563aaf54ccc8541c296ceeb2b66fa

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4