Evidence row 54547

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://studiosignal.app/api/mcp"
    ],
    [
      "web",
      "https://developer.studiosignal.app/"
    ]
  ],
  "name": "Studio Signal",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-08-03T00:13:42.469025Z",
        "status": "active",
        "statusChangedAt": "2026-08-03T00:13:42.469025Z",
        "updatedAt": "2026-08-03T00:13:42.469025Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "AI-powered media & entertainment intelligence — research, briefs, and market data.",
      "name": "io.github.vfxprojoe/studio-signal",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Your Studio Signal API key (get free at developer.studiosignal.app)",
              "format": "string",
              "isRequired": true,
              "isSecret": true,
              "name": "STUDIO_SIGNAL_API_KEY"
            }
          ],
          "identifier": "@studiosignal/mcp-server",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "1.4.6"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://studiosignal.app/api/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/vfxprojoe/studiosignal"
      },
      "title": "Studio Signal",
      "version": "1.4.6",
      "websiteUrl": "https://developer.studiosignal.app"
    }
  },
  "source": "mcp_registry",
  "summary": "AI-powered media & entertainment intelligence — research, briefs, and market data."
}

What the leaf hashes

{"body":"e66d39d92e84c7586ac14b4f357b79d3bd39f6af81c326bf287e9750847b84c1","id":54547,"kind":"listing","method":"baseline/1","observed_us":1793025433687180,"prev":null,"subject":"mcp_registry:io.github.vfxprojoe/studio-signal","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. 0xfac77d423a3f67737d1504321d7e84b5e82e7055dc9064cd54238f88c78ae1aa
2. 0xd962a4e64c56a247b78a2419255a77c5aaf12c19c3e3874f4208d7a0a6af0b48
3. 0x820c491f14cefce9f6c8eace6084b69a09816137cfe03ea1683527c8df98688c
4. 0x5c74960ae9d93f655356ff139d6967eb525afdbd323584415538c1fbe97d0b70
5. 0x510ffe66004cfaf811a47772736859d7707330047195cb9d7a2434fe1c38fa1e
6. 0xba83f598e1132f64b0ea13eb950b120a55c255fdc7a2026a5b9b63104078f02b
7. 0xe024d5bfdf2c04c92bc53279f4a330fbe3909b471dce8fcca08b4b7386193f03
8. 0x61cac5d30898d74fb5362beaf96435549cde526254c7898b4fc4c998e88a51b2
9. 0xbfe92308f156ea6389ec1185fb208a6cf9ca58f58a39e7ccf88e8c8b244dc082
10. 0xd76f45bbfd4476d2270c8ee2682ce22ef4f12d6f8a748331c7b8b81e476c49cb
11. 0xc1f00d9dcd67fe1d14473197e5f14f3efa26c1e1569cc2a3172842f28c850633
12. 0x08d20884523152a869ac5da32efc7de7b28316f6e9c2a28242f5ea9da742852f
13. 0x694eb701ea36a0e3dcde192253ab85a618738bdc1e3a6e582e6f8bf9647f7a6a
14. 0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae