Evidence row 41191

What was observed

{
  "endpoints": [
    [
      "web",
      "https://implementing.substack.com/p/mcp-server-for-substack"
    ]
  ],
  "name": "Substack MCP Server",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-03T13:55:39.782649Z",
        "status": "active",
        "statusChangedAt": "2026-09-03T13:55:39.782649Z",
        "updatedAt": "2026-09-03T13:55:39.782649Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Manage Substack publishing, subscribers, analytics, reader feeds, comments, and images through MCP.",
      "name": "io.github.marcomoauro/substack-mcp",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Full URL of your Substack publication, including https://",
              "isRequired": true,
              "name": "SUBSTACK_PUBLICATION_URL",
              "placeholder": "https://your-publication.substack.com"
            },
            {
              "description": "Value of the substack.sid or connect.sid cookie from your authenticated Substack session",
              "isRequired": true,
              "isSecret": true,
              "name": "SUBSTACK_SESSION_TOKEN"
            },
            {
              "description": "Numeric user ID returned by Substack's publication_user request",
              "isRequired": true,
              "name": "SUBSTACK_USER_ID",
              "placeholder": "123456789"
            }
          ],
          "identifier": "substack-mcp",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "1.3.2"
        },
        {
          "environmentVariables": [
            {
              "description": "Full URL of your Substack publication, including https://",
              "isRequired": true,
              "name": "SUBSTACK_PUBLICATION_URL",
              "placeholder": "https://your-publication.substack.com"
            },
            {
              "description": "Value of the substack.sid or connect.sid cookie from your authenticated Substack session",
              "isRequired": true,
              "isSecret": true,
              "name": "SUBSTACK_SESSION_TOKEN"
            },
            {
              "description": "Numeric user ID returned by Substack's publication_user request",
              "isRequired": true,
              "name": "SUBSTACK_USER_ID",
              "placeholder": "123456789"
            }
          ],
          "identifier": "docker.io/marcomoauro/substack-mcp:v1.3.2",
          "registryType": "oci",
          "transport": {
            "type": "stdio"
          }
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/marcomoauro/substack-mcp"
      },
      "title": "Substack MCP Server",
      "version": "1.3.2",
      "websiteUrl": "https://implementing.substack.com/p/mcp-server-for-substack"
    }
  },
  "source": "mcp_registry",
  "summary": "Manage Substack publishing, subscribers, analytics, reader feeds, comments, and images through MCP."
}

What the leaf hashes

{"body":"28a2f3b8edc1d0ea4aadb4ad0738e656addeddf23d320a92187b103f8e8bb046","id":41191,"kind":"listing","method":"baseline/1","observed_us":1793025398542880,"prev":null,"subject":"mcp_registry:io.github.marcomoauro/substack-mcp","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. 0xc418771fa28cb5c1e817b570d0709ee386f678c25231762130f66f4c63a6464c
2. 0x4a0c6f2f7e1391ef7c1a61a84f1c25e6e1e9d546f6c21b3ba8c27b7625787895
3. 0x2c8a7ee30ca3910f6d74620c036aff48086e80036fdce9ef2d2d079e38737eef
4. 0xa8d0e6f427050536fae5e2f7183c68f04978108b8f31013240b7694a1a7768aa
5. 0x7f76ffaa00f111ebfaf745f3698cbe0ef6cfc1ec404bd6da228a57c7f82d8010
6. 0x36174e057375d178344355ca9a1fff5ef75dcc1cd72b9357aa185c54ede13d99
7. 0x5aa5117a669648dcdb5432c774ceff9874477102720599577762607cde8f0684
8. 0xc484790e8aa9239e603a13888e56f56947e4d374461876ba4ce38064311de32b
9. 0xb27d4aa33f64f45fa7d713149f17d13b2ee30393cc7a102b9a52040296e5cde5
10. 0xdc850e305944c852a3843d2749ca3439ee04fdbf864b6a8660cc3fd8b5aced96
11. 0x2cd92a66ffb802d7ebc327d20fe07925be80289ee1c2910e6818dc40c67f2487
12. 0x63002f2569d43725bbf2d04d90ec9e6cf925c96b6dda5e7e220ecfbdd9c2444d
13. 0x641fba1f23ec69d96721e34ace1926954d835b9614cb5eae215a069c056399b8
14. 0xdbe2e8dd65ea1248b2936612538f18268abd5cf27ebdab3737694571ad496004
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae