Evidence row 54011

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://xemstudio.com/mcp"
    ],
    [
      "web",
      "https://xemstudio.com/about/"
    ]
  ],
  "name": "Xem Studio",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-21T02:13:00.789968Z",
        "status": "active",
        "statusChangedAt": "2026-10-21T02:13:00.789968Z",
        "updatedAt": "2026-10-21T02:13:00.789968Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Exact-dimension geometry for AI agents: free STEP/STL files, dimension sheets, mating fit data.",
      "name": "io.github.travisseamon-a11y/xemstudio",
      "packages": [
        {
          "identifier": "@xemstudio/mcp",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "1.1.3"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://xemstudio.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "mcp",
        "url": "https://github.com/travisseamon-a11y/xemstudio"
      },
      "title": "Xem Studio",
      "version": "1.1.3",
      "websiteUrl": "https://xemstudio.com/about/#agents"
    }
  },
  "source": "mcp_registry",
  "summary": "Exact-dimension geometry for AI agents: free STEP/STL files, dimension sheets, mating fit data."
}

What the leaf hashes

{"body":"84a83d4e1eca181062711d73c5f1f186cde475e5566ca713c472178b0e2c3303","id":54011,"kind":"listing","method":"baseline/1","observed_us":1793025424756696,"prev":null,"subject":"mcp_registry:io.github.travisseamon-a11y/xemstudio","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. 0x395d04b5719a2af4f42200030d0d5ea297ae0e343a4c6080724b943100a6ef75
2. 0xaf3eeefdcf5a9bfef207d52f3b4836d4da8ef7dde2af46fedf94a19980588781
3. 0x875f67ee9e991bc662070fc5d4c2aef5d6e7e1e9f2529f84c9cfd3a289894133
4. 0x36f44166ded10aacaf00eadfe66ddbbd8396961f30d25a0f8e3f3a819d9fd6f9
5. 0xd94fb745912a1081a02e2d6c6f6361dc7239109a7f6d4ac3925b0835cf1b83a9
6. 0x29e33af3a76de0fdcd53b28f341a06934712769ec8791c6b091340a7cf1804da
7. 0x0f74d4544733f9c12cf18cb10abc732d2ecfe3df2f5b67ee01d3dbbb3dd0f33e
8. 0x2f8c5aef7268e70464a53de9690fa2f0602fbf67fa92f63b16cd6cedb0eca9ab
9. 0xd80d4eae73bbd3fdccb88b8241b520b340e41387dbe44d61dd6bbef84d1347f3
10. 0x523b8ac4b1e261a073661101852ada4310c46af0ed03f362d2ef83a301a47101
11. 0x04a1aa6c1d916326b08791d1568a512f10ac6aaee806ec4073570b0a6b1b64af
12. 0x18cc4431e4bbe45ee72defb9bb3318434364bf71c883055c6197fa7102ec601a
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae