Evidence row 566723

What was observed

{
  "count": 1,
  "tools": [
    {
      "description": "Lint hreflang annotations for international SEO. Accepts pasted text (not a URL; this tool never fetches anything): page HTML with <link rel=\"alternate\" hreflang> tags, an XML sitemap with xhtml:link alternates, or a JSON set {\"pages\":[{\"url\",\"canonical\",\"alternates\":[{\"hreflang\",\"href\"}]}]}. Checks language/script/region codes, x-default, self-reference, canonical conflicts, duplicates and reciprocal return links. Returns valid true/false, counts, the codes found, and up to 25 issues with paths, messages and suggested fixes. Read-only. Same engine as the HrefGate JSON API (POST /api/lint).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "include_raw": {
            "default": false,
            "description": "Also return the full /api/lint JSON (all issues) in structuredContent.raw.",
            "type": "boolean"
          },
          "input": {
            "description": "Page HTML, sitemap XML, or JSON {\"pages\":[{\"url\":\"https://example.com/en/\",\"alternates\":[{\"hreflang\":\"en\",\"href\":\"https://example.com/en/\"}]}]}.",
            "maxLength": 60000,
            "minLength": 1,
            "type": "string"
          },
          "page_url": {
            "description": "Absolute URL of the pasted HTML page (HTML input only). Enables self-reference and canonical checks.",
            "maxLength": 2048,
            "type": "string"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      },
      "name": "lint_hreflang"
    }
  ]
}

What the leaf hashes

{"body":"57971d47bf1ccb021b5ac93ffe370714060ecb98a53a92538748496e353d7c8a","id":566723,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138518053392,"prev":null,"subject":"871d5a62-b617-434b-92a8-f34403c40235","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. 0x871ab095643596960463c415ebe96d3cf1fc68e29a8b7a11ef803c12b86ab092
2. 0xcf45a23c1290cd7cf2a3b1e6b878a1051881f5f0a1c91c196e3e65b6dc2b5d52
3. 0xc4a6f9f1bf027ae7cfc40976067eedb01fb97bf2dc8b2d84570eb35ddd07da41
4. 0xe27f8cb80dc9ea6d03f8359a9d32991c7f04ece62ad27ca88b91c5d229e31a7c
5. 0xbc11e4c41fac4c0620c004a866255b0817b0a6ef4ced76c3b8a77daa241b324c
6. 0x78ee90349707fec2b64beddd2e5c0fd7c1df71e7b28c110395dba86fd7b0d7a6
7. 0x4222cc962af8a505cf7bf3be1e2f28b2d59a3ffcd295b6e1f108f3706bc648a3
8. 0x287bd355e80d2379cf20e05ecb7d22f5450f94a4edce8a605ea5b9a32d1b2d00
9. 0x3b52c6ad26fef54f1a95dab30d52c670f796f7d232c75b00704e0499d5bbe4a0
10. 0x3ad36be139732c0f1161d23d3ac1b36f0b333f6c06f4553cb7e017b8df590a80
11. 0x75376c2d4b66495f3289538d2a16eac6d0471b87780b054af7810e758374d02a
12. 0x470f6acef0d823e6f9e5fa35684563c8f27c3d338b165b457171afc3d44d4d86
13. 0x6251e2be57e8d16b82579481d181c265d75096882014489550b74a728741f2f1
14. 0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4