Evidence row 1474610

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/boston-calendar/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/boston-calendar"
    ]
  ],
  "name": "Boston Calendar",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T00:54:57.560302Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T00:54:57.560302Z",
        "updatedAt": "2026-10-31T00:54:57.560302Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "The Boston Calendar MCP.",
      "name": "io.github.pipeworx-io/boston-calendar",
      "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-boston-calendar",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/boston-calendar/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-boston-calendar"
      },
      "title": "Boston Calendar",
      "version": "0.2.1",
      "websiteUrl": "https://pipeworx.io/packs/boston-calendar"
    }
  },
  "source": "mcp_registry",
  "summary": "The Boston Calendar MCP."
}

What the leaf hashes

{"body":"891d61597a3c809666d1883eab387a6eccd403bcdf4a8fe0e43af3bdf7a240b1","id":1474610,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793409344498119,"prev":985706,"subject":"mcp_registry:io.github.pipeworx-io/boston-calendar","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0x228f9c194ec5d266933a890350e8d02442170f79ee6b9391344f7aafbcd4720e
2. 0x3f25a48890ec5c883b084331c67f735e37d7e95e0d06f4c7c605f09b00f4a584
3. 0x643aa55c7f5a1a8a8365fcdcc3fece49646b56838ac36d8e0b5c8079a57f0b54
4. 0x9489d4fc0e126cef0492c2de7ff08fbfccc6deb0035b256c4d63fa4b6b415f1f
5. 0xb71045ed3932966cc475c4781b5f7cc336d7abd23bf04c3ea1c69bd8c17f4ffb
6. 0x4e231095aef2c0dae8fb13d063ca80edc1c7e069c6dc6b07cc2d533482955350
7. 0x66faa0e6d53e940ab11ee795b950d970a4a222535d1b930fe37a4b5f988e008f
8. 0x0a6515af8a4c641e3cd6c53f0d4814a83033116c9e6a6c04367db96599711de2
9. 0x9e78e4b3eb74f1d46d791caafe360bed8086a86c0194f0f709b6c4dccdbf165b
10. 0x39d9486cf3dd2929c2796db1e40f9b1369b9fb9121429f2d9b464c3059795fff
11. 0x0619568af9bf0cf970abedd7dfebeb02af11452b25c95c963c14ac5a9dec54c4
12. 0xc05c427d3e111a524a4dc15aef0c241d92fdf08e1670c34b27c22d513b11991c
13. 0x1f697283f41d2425268978efdad1b5ce0e4fee30f5bc2fba2c8f832307b40721
14. 0x4c7bf6d7d7c379b3c87447200f991359af0970fc33642e540cd6032a5a5b24f6
15. 0x5212e7c531721a66b1d21d8222c94df019d60ce8150c25bfebe2e6eb1dd39726
16. 0x24ea73817c2ff07f87a42be89aff36ac5fe49b64420a647cd406ee60e6a77f70
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0