Evidence row 56793

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://rxnorm.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/rxnorm/"
    ]
  ],
  "name": "RxNorm MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-25T22:35:06.399103Z",
        "status": "active",
        "statusChangedAt": "2026-10-25T22:35:06.399103Z",
        "updatedAt": "2026-10-25T22:35:06.399103Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Look up drug names, RxCUIs, ingredients and interactions in RxNorm.",
      "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/rxnorm",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://rxnorm.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/rxnorm",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "RxNorm MCP by usefulapi",
      "version": "1.24.0",
      "websiteUrl": "https://usefulapi.io/rxnorm/"
    }
  },
  "source": "mcp_registry",
  "summary": "Look up drug names, RxCUIs, ingredients and interactions in RxNorm."
}

What the leaf hashes

{"body":"b2ae87093b2222ac219115a2a0969fe516b762fa0e50c4b7d0703a10f26d54e9","id":56793,"kind":"listing","method":"baseline/1","observed_us":1793025440813379,"prev":null,"subject":"mcp_registry:io.usefulapi/rxnorm","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. 0x06f7509f259121ea7d772f344b4e63c151971c7da5c8bf624f008e19a2e3a47d
2. 0x8d12897b6fc94067389feedf3764c5559f4f0b286b165421e4cc54e3ebfa4306
3. 0xf291f3f0cf6331bad72fffc762016ef37f5113697717b99ba5cb1b9e5f154f68
4. 0x3cdd1c32828c91fc31b604ed0aad131d8bee0f012b931d9b322dfa6a43b6c5a6
5. 0x02c70ea209f1f8982b46e70c21e0245536f342cbb8c912cdcd458f818ca91319
6. 0x567d7fed28c81469d830ed5fef51478c8bbc81c271385defa40b3c3fa73e32bb
7. 0x3d5e420265456d0fa8ed23511fefc5ebb0d9de37d3212667a8cba4993206ca38
8. 0x782d17533b7c4225e41e33b715401ccab77c45b915bb9e656b18f2a81a15973f
9. 0x42a22292b9d01e62d782289781316c9235dff02ffad19ccc8cda236fb4d41648
10. 0x9a948adeab9018ec5a898e396ee4bd686403fcc757d5eaa65da65f42603cb55c
11. 0xdd6d5f87470c9b64b375ecc2fb3ff4a65fedf3d6a0bd40f365da40a6a41b103d
12. 0x7910a200eb458bec3c3badb3b2ead3e75cec5f3ba263800cea6b9f32efb53f25
13. 0x610fdf3e989af0a6b4a400a3a8aab9156d757f8c96efe4e9d0594dfd04de1cc0
14. 0xd1d3499072edb10edc68f84bcae2365d2ab534df689250cab18c751b6f13b6ff
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae