Evidence row 997037

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/nber-macrohistory/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/nber-macrohistory"
    ]
  ],
  "name": "Nber Macrohistory",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-29T05:00:51.167326Z",
        "status": "active",
        "statusChangedAt": "2026-10-29T05:00:51.167326Z",
        "updatedAt": "2026-10-29T05:00:51.167326Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "NBER Macrohistory Database — the National Bureau of Economic Research's 'Public Use Data Archive'…",
      "name": "io.github.pipeworx-io/nber-macrohistory",
      "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-nber-macrohistory",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.0"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/nber-macrohistory/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-nber-macrohistory"
      },
      "title": "Nber Macrohistory",
      "version": "0.2.0",
      "websiteUrl": "https://pipeworx.io/packs/nber-macrohistory"
    }
  },
  "source": "mcp_registry",
  "summary": "NBER Macrohistory Database — the National Bureau of Economic Research's 'Public Use Data Archive'…"
}

What the leaf hashes

{"body":"10619ad980b4aa786c6d24c6a0c4a30065b990fa1ba9fef96c298b390692e989","id":997037,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793250769926017,"prev":738812,"subject":"mcp_registry:io.github.pipeworx-io/nber-macrohistory","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0x9e34d55ecab8a84ce5ebf26d84cd9ac62b461f9b5e68c9def5ee2b42531b5293
2. 0x813134456f7ae1fed49a80d0b3f81c953715067cf25b789905966c34b3ec80c6
3. 0x368bff459fd339af07d09355a39388b8f5d504bc793330fdc1bc8fdef51a7a08
4. 0xd058ef8736f5e0ed369039ca9a41025fd70177a119e607e52a2f154876fb1e0f
5. 0x31d2f510fd89bb0437a8fed92085d4daaf4b373574e8b749add80a1891d6fec9
6. 0x8156a88888507334f2981d08c120107b66520de06da5dddd92d5b46c2ff134d9
7. 0x51656954c0f42010b1e39af3633e35ff55947387b3ee7362eeea022c114e4d21
8. 0xb63dc75b6e64b23b09e82814b27f0406814935ae53c6dad726d29d012687e58a
9. 0x535350f60666d4ecfa9cb04fd8d3a1b8432340229906590f692faea7094cd300
10. 0xf22494eee341cb4dc290d51474e4d773804840fd736c856b9654482bdf92c88f
11. 0x0194ae1ab7e0708b6a6d97420a1c686c88c7b34027bcca156ecddba3d8c3774d
12. 0x6b12e9cf27bdea025f93fa5a1ea2c8b8500bf79e5c6aee18f59b2279f0ba530e
13. 0xbb0a2c430dc54812e3f6b6c2468d5b94e0ff1143439ee40a935801628b42ca5f
14. 0x96603408ef495fb0a8106bb839ad20e6578c0c0fbded2a9b235438f5985b0f0b
15. 0x4a1f9fe26bf92c291485b5fb33b95d1917a994e417ac0526ccef55ede0a90a4c
16. 0xe38dc587bc010668982bd78025ac33d7326ffc2587f2de00e848da2718907ecf
17. 0xa1fa2e97e71ad6e802f325afd74bb7095901f2060529c9739182a1233f8804bc
18. 0xe01539ac4c9f9cdf265a9e5c6d99c8da11e70ff0c7175fb23e402d33b9d79785

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1