Evidence row 27996

What was observed

{
  "endpoints": [
    [
      "web",
      "https://exchange-rateapi.com/"
    ]
  ],
  "name": "Exchange Rate API",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-06-20T21:37:52.925435Z",
        "status": "active",
        "statusChangedAt": "2026-06-20T21:37:52.925435Z",
        "updatedAt": "2026-06-20T21:37:52.925435Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Real-time & historical exchange rates for 160+ currencies, mid-market (Reuters/Refinitiv).",
      "name": "io.github.Exchange-RateAPI/mcp-server",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "API key from exchange-rateapi.com (free tier available, no credit card required)",
              "isRequired": true,
              "isSecret": true,
              "name": "EXCHANGE_RATE_API_KEY"
            }
          ],
          "identifier": "@exchangerateapi/mcp-server",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "1.0.2"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/Exchange-RateAPI/mcp-server"
      },
      "title": "Exchange Rate API",
      "version": "1.0.2",
      "websiteUrl": "https://exchange-rateapi.com"
    }
  },
  "source": "mcp_registry",
  "summary": "Real-time & historical exchange rates for 160+ currencies, mid-market (Reuters/Refinitiv)."
}

What the leaf hashes

{"body":"1fe07e2eeaed3222ce78926abab19ef22b482547d6ed76e583d384c4c5322ffa","id":27996,"kind":"listing","method":"baseline/1","observed_us":1793025358350697,"prev":null,"subject":"mcp_registry:io.github.Exchange-RateAPI/mcp-server","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. 0xa86d6de0da6463ef5d55b9cd24205e2b3b816fb211dc8cd852db513eb7567865
2. 0x5be57ce805b1ac3eb2258d869213607f78fc763a661a1ba4b5cfe77e721464b8
3. 0x83b68e9b895fa880373846af300514af50c5d9c73e92aabff01c8f149255aa40
4. 0xe25ecb76a0baf1f64cb0390905c83571b3f2a85d682980234780b048d4f03138
5. 0x6cebe0199b1d1b3ed6dbf6bc42dd1ef607bb016a8c895282dc32b65c99e6bcf4
6. 0xae16fceed406720377c67564ef3f65e3c4fe6f48fa02fe369c9cb9a4bc0789f7
7. 0x1052fb998920080a0372dc68f464baf0d8dd849da22b880fbaf18b5719b5892c
8. 0x50ec7a6cc79cc174f41a758bfc78e392c1c298a9981452600127f09700884083
9. 0x53137a6629afc85f333af9fc977add7ac420c7563a978538d0126b6a5a86536d
10. 0xfd8f2e7fe993511f65aa0968b5038659340f72883448aed02c2c9b4bb27c71f9
11. 0xe5e83afe0ce08c2497f8492757a4767cf2409aaae2061487f80e1d45646872f8
12. 0xb31654882cc5704ae07fa6a4ad12ef5516ea95a5ec8b5affdbdbec199402e29a
13. 0x292ebdce6b8d3d7ef08ad646a0fd97dee9313ab55c1a350807d9f3013794c37a
14. 0x428106f4ae4ec142f17aebf6fa50935242f8d3f1c211cf95d6351d03d11da2b7
15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae