Evidence row 33848

What was observed

{
  "endpoints": [
    [
      "web",
      "https://github.com/backblaze-labs/b2-mcp"
    ]
  ],
  "name": "Backblaze B2 MCP Server",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-29T22:06:03.127555Z",
        "status": "active",
        "statusChangedAt": "2026-09-29T22:06:03.127555Z",
        "updatedAt": "2026-09-29T22:06:03.127555Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Official Backblaze B2 MCP server for buckets, files, keys, Object Lock, and S3 storage.",
      "name": "io.github.backblaze-labs/b2-mcp",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Backblaze B2 application key ID for native B2 and S3-compatible tools.",
              "format": "string",
              "isRequired": true,
              "isSecret": true,
              "name": "B2_APPLICATION_KEY_ID"
            },
            {
              "description": "Backblaze B2 application key secret.",
              "format": "string",
              "isRequired": true,
              "isSecret": true,
              "name": "B2_APPLICATION_KEY"
            },
            {
              "description": "Optional fallback S3-compatible region used before authorization.",
              "format": "string",
              "name": "B2_REGION",
              "placeholder": "us-east-005"
            },
            {
              "description": "Optional master key ID for Partner/Groups API tools.",
              "format": "string",
              "isSecret": true,
              "name": "B2_MASTER_KEY_ID"
            },
            {
              "description": "Optional master key secret for Partner/Groups API tools.",
              "format": "string",
              "isSecret": true,
              "name": "B2_MASTER_KEY"
            }
          ],
          "identifier": "@backblaze-labs/b2-mcp",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.2"
        }
      ],
      "repository": {
        "id": "1241092911",
        "source": "github",
        "url": "https://github.com/backblaze-labs/b2-mcp"
      },
      "title": "Backblaze B2 MCP Server",
      "version": "0.2.2",
      "websiteUrl": "https://github.com/backblaze-labs/b2-mcp#readme"
    }
  },
  "source": "mcp_registry",
  "summary": "Official Backblaze B2 MCP server for buckets, files, keys, Object Lock, and S3 storage."
}

What the leaf hashes

{"body":"081938d8b43df5c211fd6a629774a29c78808009656c87904335e3f3a1c61ea6","id":33848,"kind":"listing","method":"baseline/1","observed_us":1793025369593015,"prev":null,"subject":"mcp_registry:io.github.backblaze-labs/b2-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. 0x3fc8dcb1bf9d670844324146812db2469906d3de9812e83f8edcce48b52e656b
2. 0x86bb7e0cf69574e80cbfa35ec94f39637bac074095e141543cd24ce2868e1823
3. 0x082507142c807cf1e632a06f59a878086058d09724a12f5c25571ae2a5c7bdc7
4. 0x3750d88261037d3388e525490a8b08041cb5594ce4b3a158d487a1de316d705f
5. 0x05fed0ca9c424fc8212006fbe46a903574d81029f966752eed439090d929b2f5
6. 0xe7465a134d8506a8f29f3ea234e5191ded08f893a6eba3b17b78e6de134e8b03
7. 0x37d619dcbaa7250552832a79b2d7e76f9942cb70a135e3e4fefe4d7df754f6ab
8. 0xeaad87f245f67438683c3b8689318a5e01fb60389de76b4e8095fa759e3a3aab
9. 0xedc286c7d2fbededbeafd67ccbb189a587dfcede01b6f29077581f911149d0eb
10. 0x3aa1f01bbb88cb01a9628a415794e8a8fba10d2a03d54c08d2e3a38ce00d02cf
11. 0xa4d1745f134661a77f8f2bfd58422252c41790ede9f0de54979c915510f5d550
12. 0x1afc0318a98c6dbb5a80e5cb86eba22b844e3f3b185a16f17290e29ab7410f55
13. 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae