Evidence row 52334

What was observed

{
  "endpoints": [
    [
      "web",
      "https://github.com/slettmayer/calc-mcp-server"
    ]
  ],
  "name": "Calculator",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-17T21:12:40.330541Z",
        "status": "active",
        "statusChangedAt": "2026-09-17T21:12:40.330541Z",
        "updatedAt": "2026-09-17T21:12:40.330541Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.",
      "name": "io.github.slettmayer/calc-mcp-server",
      "packages": [
        {
          "identifier": "calc-mcp-server",
          "registryType": "pypi",
          "transport": {
            "type": "stdio"
          },
          "version": "0.1.9"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/slettmayer/calc-mcp-server"
      },
      "title": "Calculator",
      "version": "0.1.9",
      "websiteUrl": "https://github.com/slettmayer/calc-mcp-server"
    }
  },
  "source": "mcp_registry",
  "summary": "Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size."
}

What the leaf hashes

{"body":"dbea552f25b67a6e51cee37467e47adc8b6e2a70352f1d7ceaae097c28d035a1","id":52334,"kind":"listing","method":"baseline/1","observed_us":1793025419796910,"prev":null,"subject":"mcp_registry:io.github.slettmayer/calc-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. 0x5eab682513d6403a638252dac847a5f23909ecac5bce371928cc8b782d6b0090
2. 0x0951ed59b889d2b4dceb9203d24d5ebcfca2100671062ead2d49eb8bd89a53ea
3. 0xb48d74b89a0d9e1adaa1e7f56da6fc3f08a9b5f850d0c7f9ce51152ddb34e552
4. 0x660a20c17b1ce139cc1bafdd89aae4bbb9b48e96baabe69c1d55121dd5d777f3
5. 0xbb7d77a221d2c0803c10ccb89debf670f65a0fa4f3e57068a9d22a4c765ff25e
6. 0xacbdfd6c3f718d7aac4d330632720d9f987d6a4cf478163e778554ebe2407b49
7. 0xd1cee7f6e542764b44ded0198addb003252b83b6e0e02bceb7913cdd9add22f9
8. 0x9caca92c40e3df430dc7d6dcf3034ac1b40cc933ce297b3629dbeb9517791ac5
9. 0xbb1090c1e42634489003a7e38bdb5d6b3998f976a72a438621c22e0eda67c1eb
10. 0x33f025c13618ed53fc05a5cb528fef06abae42e7afa58ecfa04868e98e6879bf
11. 0x49cc8f2035ca48165d187499d4442647d0afe9d3c61547728b03e4a0494752eb
12. 0x5ab25c2fdf4695beeefb0726a5fc73e189b68f8d9fb2a3f6321ff7223b166fdd
13. 0x66883b42f4167ade51c4909f050c5478524e23786fb0b5c48bd1a53580960a68
14. 0x216cebb9ae5414599109a02297c4817d7d1c6b1394afeb97efe38e32f0053974
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae