Evidence row 24664

What was observed

{
  "endpoints": [
    [
      "web",
      "https://arcaeon.io/"
    ]
  ],
  "name": "Arcaeon",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-25T05:23:33.509383Z",
        "status": "active",
        "statusChangedAt": "2026-09-25T05:23:33.509383Z",
        "updatedAt": "2026-09-25T05:23:33.509383Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "A record of what an agent did that the agent cannot quietly rewrite, and a way for anyone to check.",
      "name": "io.arcaeon/arcaeon",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Witness API key for the two paid tools (witness_pin, witness_renew). Free tools work without it.",
              "format": "string",
              "isSecret": true,
              "name": "ARCAEON_KEY"
            }
          ],
          "identifier": "arcaeon",
          "packageArguments": [
            {
              "description": "The verb that starts the MCP server on stdio.",
              "type": "positional",
              "value": "mcp"
            }
          ],
          "registryBaseUrl": "https://pypi.org",
          "registryType": "pypi",
          "runtimeArguments": [
            {
              "description": "The MCP server needs the MCP Python SDK (the package's [mcp] extra); the base install has no dependencies.",
              "name": "--with",
              "type": "named",
              "value": "mcp>=2.0.0,<3"
            }
          ],
          "runtimeHint": "uvx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.9.0"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/Arcaeon-io/arcaeon"
      },
      "title": "Arcaeon",
      "version": "0.9.0",
      "websiteUrl": "https://arcaeon.io"
    }
  },
  "source": "mcp_registry",
  "summary": "A record of what an agent did that the agent cannot quietly rewrite, and a way for anyone to check."
}

What the leaf hashes

{"body":"7ed4974711217ddde6a41cc398179fb37e9b801ec6e30daf8b22bc957bc50eee","id":24664,"kind":"listing","method":"baseline/1","observed_us":1793025352913009,"prev":null,"subject":"mcp_registry:io.arcaeon/arcaeon","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. 0x2d9e07011ed575bd7e4a90349e9b8397185968141b6473970f2bab3b669c9374
2. 0x81bdeca20361a93300d26f2f328fea433e210512876d63647cefe1baaccd9492
3. 0xd7cbdc1f1aa9fdd94e1e067441252ae7ac76da5ee724d1c0c58e0f9770b1e7f3
4. 0x8e519785b4191cb67f17190ca98be9b06a70ac94d5abd4747d8e7e828fd67ba8
5. 0xf42902687fe975a6fe10f5b803b4f6d0f81bc131e31578fead962f1cc283901b
6. 0x9431482af0ad55e85be6328b86b21c5cecf51dee22b2e1df3074bb00f26200d4
7. 0xc1807a20380a5cc6e6331bf36a3a61fca4c4aa26f061a68c0c2c3616ad59bc92
8. 0x8498625021a27de3400f88065f86653480c5305c51e6386790a92b8d0cc94b86
9. 0xe76deb2eca22e53c8cabed975a1c5640eaa41ef8ba40a91b5033439c183e013f
10. 0xfebc7a0b0bf8746a2821ac5da36e68a391f5528503546c156de64dcfb3f4e54e
11. 0x0a14d7531a251f3320f61b058ccd68e743331eaf8f3058982b949d68be76670c
12. 0xf89d9951e0a8e08b9cf11177a1f4e0fd86d9facc5dfecaabbfe564675ebefef7
13. 0xb87e8b32cda179c9e632e227bbd8a6d1f6f61d9d81bb92dbd4dd835d2b3b5caa
14. 0x683955a5b2250ad50568d022a6580d8739b6aff1356779d72a773b088e7c289c
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae