Evidence row 1821075

What was observed

{
  "endpoints": [
    [
      "web",
      "https://oncast.fm/developers"
    ],
    [
      "mcp",
      "https://oncast.fm/mcp"
    ]
  ],
  "name": "Oncast",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-01T20:15:30.420221Z",
        "status": "active",
        "statusChangedAt": "2026-11-01T20:15:30.420221Z",
        "updatedAt": "2026-11-01T20:15:30.420221Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Fact-checked news stories from Oncast's live AI radio: verified claims with source links.",
      "icons": [
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://oncast.fm/icons/icon-512.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "192x192"
          ],
          "src": "https://oncast.fm/icons/icon-192.png"
        }
      ],
      "name": "fm.oncast/oncast",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://oncast.fm/mcp"
        }
      ],
      "title": "Oncast",
      "version": "1.0.0",
      "websiteUrl": "https://oncast.fm/developers"
    }
  },
  "source": "mcp_registry",
  "summary": "Fact-checked news stories from Oncast's live AI radio: verified claims with source links."
}

What the leaf hashes

{"body":"38e247bc002fdc48dff85ac95e38a8faeb9db19b628a139f5e5f5822c9ccd103","id":1821075,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793564265237910,"prev":null,"subject":"mcp_registry:fm.oncast/oncast","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x2c1cd6a23b0f39e4d6a1f40c02cc9128d55a3f08089679bf05291b078f3d1131
2. 0x7750b8e7abfa2403f8a181085ffbaa8c2093a2487cb0b788c76f7d22ca618699
3. 0x9bcb0449a115c29f13dc761e149d8e7375cfab14dd93a8210ae949d3d05a5434
4. 0xdf99f5d0fad0807e364ea3591ac72e7d717b863d98cdeddbf354d3bbdb2913c4
5. 0xc6b12db34f40596cbe5e8fbf09be946e85771eadebfeda409e2087dd8a78820c
6. 0x8c22e417b234517fedc0f43bd57105fc062b543081f612d579e47a3110a7f7fe
7. 0x67c48eb31ca87cf39cf34be0cdfdf239c45e1514a6a5f3af50a7e7a2e2170fdc
8. 0x0dcd048fcf119f6bac4e04aed801288dd2d321bd2195d56d4e1847b10829b6cf
9. 0xc15a76df77612ad8bbe3e9711313db0d5b1a09be159bdbdb7c04d16ba5bfa3e4
10. 0xd62100d91545aa22a4b5f0c067d6131f9c82537cd9ab263086182e7f24bd8596
11. 0xc0183782a46371c6cac709be9692efff8b0420fcf778dec40808fb5878e97abc
12. 0x0d530940fda014e42fd7583a63b480ad18aedf87206fe608174f3d6c268b3669
13. 0x119e26a40ea5ea49199024d5e4dc5ea7e4b7110b91f88cec9a3d894fa9681bde
14. 0x894f627e9eac1731ca26b2b4b6529eb16ab1b15294210edac68c8378063e2d8d
15. 0x80b1e578d986f759ca01ea02c7a922e757a26a65318f9844ac72c5c1d4fe339e
16. 0xa856ad79e6f29a2b5516257f0d4817172cca11251fe2e7e8f3911b105fe2b622
17. 0x02b3554752e71a19b12d7a76dbff436e85387226ceec89fdebdcdaf0122c2932
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90