Evidence row 579199

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Search the capabilities.txt registry for sites that can do something — by capability id, keyword, or category. Returns matching capabilities with the site that offers them and its conformance grade. To invoke, fetch that site's /capabilities.txt.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "query": {
            "description": "A capability id, verb, or keyword, e.g. \"check_stock\" or \"refund\"",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "discover_capabilities"
    },
    {
      "description": "Get the full list of capabilities a site declares, by domain.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "domain": {
            "description": "A domain, e.g. example.com",
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "get_site"
    },
    {
      "description": "List every site that publishes a conformant capabilities.txt, with its grade and capability count.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "list_sites"
    }
  ]
}

What the leaf hashes

{"body":"035bcf85d1107395817e2b31036bfbf4ce5df027e146ada0d85fef6fd1216272","id":579199,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793143332891172,"prev":null,"subject":"9073d19c-fe9b-44a2-bc46-af9617eee3f6","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xbcb695737b6f7c1c8792d1519de254acd80a5665903aba0de44f87df6b2e4349
2. 0xafc416dec5758cf3a8779bb8d3b0ea9198cc92da6f702133bf21003c68526b3a
3. 0x10258aea6e7e62ca408061d8ff5d545d649f7ba068e06940e75216f4b5e1d067
4. 0x192780f08cdcbcfd453d52e352176f2ea50a0a5dde2d8658d3e70e9451cb7f68
5. 0x328cc08a4fd351866253d40b6d87593d67ee590e1ce3d7b5f878c2a47c63fc4c
6. 0x86ad7d39e9bc07e122ec7d0dfb0010fb905658cc05120f12ad5efcdccb9fab1c
7. 0x7dd6d3d9a34cabbd2beb1764b26049ffe357eb164e56eb4a012e90f2c00ed350
8. 0xc82c9bcc3a0a604349c7db8c2355ffde72547ff11d4d9987d7684ba75d9bc32e
9. 0x8096ef12acc9be5e488642693a06aad33e96b115e86b5dc3dd800e0790a1564e
10. 0xe37bb054ee8eabeb3574167bc5f618198cf3f58380eeae8ee81407fce4747d2d
11. 0x0b996890ad9f7a45291a56249c03de765fb331d173fb8d8e01ab2ec842ac8316
12. 0x92804c1cd4f73221d350049c90c3d17d86ce815c332f3b67c5894d2919efebf2
13. 0xb4800af1fe2ae822adba5c087faf1dc0bc2d7c9de2e3e602a2b65aefc1d53c94
14. 0xa453d1738637a5c663802d07ce095aa340c80d53a4288ae277a72e265868ce4e
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4