Evidence row 35524

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://met-museum.caseyjhand.com/mcp"
    ]
  ],
  "name": "io.github.cyanheads/met-museum-mcp-server",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-15T12:04:17.476046Z",
        "status": "active",
        "statusChangedAt": "2026-10-15T12:04:17.476046Z",
        "updatedAt": "2026-10-15T12:04:17.476046Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Search the Met collection, browse by department or update date, fetch full records and CC0 images.",
      "name": "io.github.cyanheads/met-museum-mcp-server",
      "packages": [
        {
          "environmentVariables": [
            {
              "default": "info",
              "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').",
              "format": "string",
              "name": "MCP_LOG_LEVEL"
            }
          ],
          "identifier": "@cyanheads/met-museum-mcp-server",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.9.0"
        },
        {
          "environmentVariables": [
            {
              "description": "Selects the HTTP transport.",
              "format": "string",
              "name": "MCP_TRANSPORT_TYPE",
              "value": "http"
            },
            {
              "default": "127.0.0.1",
              "description": "The hostname for the HTTP server.",
              "format": "string",
              "name": "MCP_HTTP_HOST"
            },
            {
              "default": "3010",
              "description": "The port to run the HTTP server on.",
              "format": "string",
              "name": "MCP_HTTP_PORT"
            },
            {
              "default": "/mcp",
              "description": "The endpoint path for the MCP server.",
              "format": "string",
              "name": "MCP_HTTP_ENDPOINT_PATH"
            },
            {
              "default": "stateless",
              "description": "HTTP session mode: auto, stateful, or stateless. This server explicitly sets stateless; the framework schema default is auto.",
              "format": "string",
              "name": "MCP_SESSION_MODE"
            },
            {
              "default": "none",
              "description": "Authentication mode to use: 'none', 'jwt', or 'oauth'.",
              "format": "string",
              "name": "MCP_AUTH_MODE"
            },
            {
              "default": "info",
              "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').",
              "format": "string",
              "name": "MCP_LOG_LEVEL"
            }
          ],
          "identifier": "@cyanheads/met-museum-mcp-server",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "streamable-http",
            "url": "http://localhost:3010/mcp"
          },
          "version": "0.9.0"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://met-museum.caseyjhand.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/cyanheads/met-museum-mcp-server"
      },
      "version": "0.9.0"
    }
  },
  "source": "mcp_registry",
  "summary": "Search the Met collection, browse by department or update date, fetch full records and CC0 images."
}

What the leaf hashes

{"body":"e4a8edb0152bd3fdc4c4175bb4bc5d20817337a8df9ea3b8be8527aa4f0825db","id":35524,"kind":"listing","method":"baseline/1","observed_us":1793025373199718,"prev":null,"subject":"mcp_registry:io.github.cyanheads/met-museum-mcp-server","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. 0xf77f0f19ee97b05860d1e1a2968d06dfd678357354a86bbf025100e35f0740e7
2. 0x0af011429c73a30d775e496cd952d70030ec541ef6c42fd9312bc6f260f9f9a2
3. 0xe7797b74e0f95660f5d9f78bcf37842a9d836cbef86948fa99f1c009008fd4bd
4. 0x77ac77c60d77b25d275cf5e70fb57c03ddeaa42163c3d8d82ea0c7935365c022
5. 0xbc6ac46b1daea81528bb9795a9a98e6b004a32a32e169169c15870f3ea0ba4b9
6. 0x76e8367c2da699f6ad5889bf545fc7d4dc6a5202ceec982667109ea255ccf702
7. 0xf4252859734b4021dbf5f7884076f210dc1633401b1fe8c0617a7d4c3a193524
8. 0xd18bc86cd93433fe5f219fa2830aac8b9fcc964b2149457ff3e6adfc788912e8
9. 0x1da3c1fdaac0939545e994cf221d1bcdd516bd0ebd2694b9d00f5b68d438e585
10. 0x8912095205c0419743c69fe2e0e31af1d737e6d84891a84908cff125ff0e8e71
11. 0x0836eb686ada9beddba0f76357ec59493359d2a7c51aa5c4a31d3cfe9873ea74
12. 0xf7eba200f6f1012d700fcc53fc6d57dcafd1019c920b1030d42fa21d4af95d94
13. 0x694eb701ea36a0e3dcde192253ab85a618738bdc1e3a6e582e6f8bf9647f7a6a
14. 0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae