Evidence row 1288020

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/bcb-br/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/bcb-br"
    ]
  ],
  "name": "Bcb Br",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-30T20:04:53.710754Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T20:04:53.710754Z",
        "updatedAt": "2026-10-30T20:04:53.710754Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Banco Central do Brasil (Brazil's central bank) MCP. Keyless public APIs: SGS time series + Olinda…",
      "name": "io.github.pipeworx-io/bcb-br",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Optional Pipeworx API key. Without it calls are anonymous and capped daily; a free key raises the cap.",
              "isSecret": true,
              "name": "PIPEWORX_API_KEY"
            }
          ],
          "identifier": "@pipeworx/mcp-bcb-br",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/bcb-br/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-bcb-br"
      },
      "title": "Bcb Br",
      "version": "0.2.1",
      "websiteUrl": "https://pipeworx.io/packs/bcb-br"
    }
  },
  "source": "mcp_registry",
  "summary": "Banco Central do Brasil (Brazil's central bank) MCP. Keyless public APIs: SGS time series + Olinda…"
}

What the leaf hashes

{"body":"032a97ea405128b15d31066ab106a33f39a676dcf0f595924ab06b1125601664","id":1288020,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793391338910317,"prev":985673,"subject":"mcp_registry:io.github.pipeworx-io/bcb-br","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0x266c705aba6f1fa17269a2149fa8757f12435576626daf7697b07a06995ee69f
2. 0x8d9e96dfb2444f2c49d43b19760ccc9365719c525c1dfe185bd61fb46ffc8b64
3. 0x534a7f1fce4b3144d503efdb73ecfcb35ca9b16cd91fee780a1368b856e6ce00
4. 0x9700b9e383a781d56bbf102056fd7bc2d92c01190aaf10adf124013814ad45b2
5. 0x95ab21154b418ac3551eef04677f99c042ca9dbfa878a44f2a233345f8d6694c
6. 0x8ebabd182af64882c58792b770e52f75eff804229aaf8cf66266c039ec822fdd
7. 0x43d42fee632eea98091fc2674833e254288c09049d04530dab08f5cbba4f0674
8. 0x3a9948d02f3d1ee2953c4062fe2a67c92e94d93e17f03c1ef41094b99b4408b3
9. 0xd2d88aae317f36be228bbe113a7a6a1c0eef0c4c8267885b1a081936c51262e9
10. 0x0b7498814da514d59d491f7c302e26bbae44e0a24d09dea19c24f6a256d90ca8
11. 0x612e4d3a579da59d45e5e43c5dbe70a62740cc9281b3eff2a433271bc2aef336
12. 0x714329e181af1b79f7cec92d54e07b15cb43f061badc372809fb371cd81de07c
13. 0x6d0a0967c405a2d625b45c29f2792bc0d028b2f64827f93caac22b450a6e0970
14. 0x9f9779dc68f693114863e0dec3d1a44dc50e81c34bd4122e25a6a644a5c619bc
15. 0x6222037db785cc797fc8809e52e551d945c928d389b7ac947c037fb9af818562
16. 0x50ca74d7c8f26a46e9c3b8fb5e7f9ebcdfdcc1b7c863db3b6d2b7c12e24ca66f
17. 0xb0c9ef42e725578748f3119c9dbebf2fc437266bda013df29f98ed3ebe621403
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861