Evidence row 776546

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.live.nevermined.app/mcp"
    ],
    [
      "web",
      "https://nevermined.ai/docs/products/catalog/mcp"
    ]
  ],
  "name": "Nevermined Catalog",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-28T13:31:52.067926Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T13:31:52.067926Z",
        "updatedAt": "2026-10-28T13:31:52.067926Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "_meta": {
        "io.modelcontextprotocol.registry/publisher-provided": {
          "documentation": "https://nevermined.ai/docs/products/catalog/mcp",
          "keywords": [
            "catalog",
            "commerce",
            "payments",
            "x402",
            "mpp"
          ],
          "publisher": "Nevermined"
        }
      },
      "description": "Discover and pay for services from the Nevermined Catalog using a spend-capped budget.",
      "icons": [
        {
          "mimeType": "image/png",
          "src": "https://nevermined.app/favicon.png"
        }
      ],
      "name": "io.github.nevermined-io/catalog",
      "remotes": [
        {
          "headers": [
            {
              "description": "Optional Nevermined API key in the form 'Bearer <key>'. OAuth-capable clients can omit it.",
              "format": "string",
              "isSecret": true,
              "name": "Authorization",
              "placeholder": "Bearer live:..."
            }
          ],
          "type": "streamable-http",
          "url": "https://mcp.live.nevermined.app/mcp"
        }
      ],
      "repository": {
        "id": "946485192",
        "source": "github",
        "subfolder": "apps/mcp",
        "url": "https://github.com/nevermined-io/nvm-monorepo"
      },
      "title": "Nevermined Catalog",
      "version": "1.87.1",
      "websiteUrl": "https://nevermined.ai/docs/products/catalog/mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "Discover and pay for services from the Nevermined Catalog using a spend-capped budget."
}

What the leaf hashes

{"body":"8afbdb9f31d99cce5a7f019dc5bfcefb9d6b9817eec97160f3e0efbf3f719208","id":776546,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793196658723160,"prev":495490,"subject":"mcp_registry:io.github.nevermined-io/catalog","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x06eb50e578f3be4d305d6a146ff5b8e44789b57b692fdd453d048c1a37d69fc7
2. 0xc4127dccb6dd501d2e0ae7eeb87449e7055baae78f228062a6fbac5f4de9d815
3. 0x27dd949e48adfbe815e09c631e0c0d79cbbf465b99ab3c55a320e1cdf09be78f
4. 0x40b70f76e4301ac637cb66fe9bb0c4e82435be85f3443c18bbe122657487a054
5. 0x6fc92d0ce396f4247b708512b00348f31e556731601c945bfafc4170eb13a0c9
6. 0xb6d6c770d5c25dd3530d9aefa055ad488f9d636bbfde12ab8d71b4b659c88a3e
7. 0xdb0c09a72188fdc1f5b1e8b693036a8e93fafd53252ea41be62fb48af833daac
8. 0x4e6ba693503c72d1bbb625039f09b08f5f141199eea368d96e6aecdcdf181acf
9. 0x6746eba6117c73f7290150dcb9a8d3c53f76fa8ef9f5c0050d1a0457ac98ecae
10. 0x19ef96eeb476300505fe2db1cff8ab77c835aecd5e17a25b61ddd557161220c9
11. 0x284ed0ba4521925f2cf593d6f840eacc9587203dda63fc72288a0bff20d00d78
12. 0x825b5cba69887117963e0cfd615aa74fe5ae01aa1deb0098d6b7e04e01634ba7
13. 0x8dcd5f3419d7730712ce62dbc974d197b0e9c47ee96e0172cdc134c7a6bf73f2
14. 0xf3fd571846115a5778f2f20ec53a7e9b272de5f8737a627379966b3745ad5e29
15. 0x2d4bed6c1c0f427d29eba935cdedcc76c72935d41919903a3b217a8ffca38438
16. 0x35e8995c30094446ec790423171382fccb377081b921295b0ae3840cc2c4f52c
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae