Evidence row 1500470

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://updown-io.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/updown-io/"
    ]
  ],
  "name": "updown.io MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T17:14:22.890439Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T17:14:22.890439Z",
        "updatedAt": "2026-10-31T17:14:22.890439Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Check updown.io uptime checks, downtimes, response metrics and status pages, and create checks.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://usefulapi.io/icon.svg"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "256x256"
          ],
          "src": "https://usefulapi.io/icon-256.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulapi.io/icon-512.png"
        }
      ],
      "name": "io.usefulapi/updown-io",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://updown-io.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/updown-io",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "updown.io MCP by usefulapi",
      "version": "1.31.0",
      "websiteUrl": "https://usefulapi.io/updown-io/"
    }
  },
  "source": "mcp_registry",
  "summary": "Check updown.io uptime checks, downtimes, response metrics and status pages, and create checks."
}

What the leaf hashes

{"body":"0892fc9c662bc1d1c89d9514c84777c835420b41ece4138f012995444cf8f072","id":1500470,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793466976663234,"prev":1482275,"subject":"mcp_registry:io.usefulapi/updown-io","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. 0x2c259669f87fb6fdc648b78ac0f16c29f62e9c68322de497023bdcaf6418ab1a
2. 0xdcd489b14b2e0597e2de5956a1e50f06eb63b78f368b4afaf285982abd70f170
3. 0xb559ae8c89d1d2e2534193b7e1905ef74f2c83a625d3eea5859a76fecd0262f8
4. 0x25cef0ca6a60802493d079852f57f3f45af708a55b4f4abd3a330527b5448273
5. 0x76a4472af95551c4a0d46e1df037b582b52f8e0dd0e524a3063b8c94b1d59a55
6. 0xe814a4b43704f788de4c846873fdf552144979244e317e281cef5557e367a56d
7. 0xdd4cd511b2eeeb45492dc0e0c8281a5b4e246c39b5cd9396a11c92b60dcfae04
8. 0x7ff4c4f633fa3b584644534b70cb8cd92a027e3f40674bc290667e647beebde0
9. 0x730c3e3ba40c23bad71d8279d7c3e0f57388462ff64b9c6091817b926a9aca03
10. 0xd18f28ee929716cd010be3af5f00b282fe5ba9aeac502661adbe29847bcd3e94
11. 0x2d0ecc96bdec37f26b1d31329f2826936898603cfe6e3e60a099ff79887aeb9c
12. 0xa45482c80b1fdaf871a0e36a1cde3354d424f7d24524878803b37ae4322e2c51
13. 0x9a2482c4b474ce4b204d9b867c6cc884df05c5e0f70d0217d14a71c3075f147f
14. 0x6a9ee67e2ec2288c0f63ce0ae02c0a91a836bcfae9ed393ea79a911cf00f29f9
15. 0x5212e7c531721a66b1d21d8222c94df019d60ce8150c25bfebe2e6eb1dd39726
16. 0x24ea73817c2ff07f87a42be89aff36ac5fe49b64420a647cd406ee60e6a77f70
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0