Evidence row 563833

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Current catalog counts (standards, sub-standards, simulators, ebooks) from the site's published stats file. / 카탈로그 통계.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "get_catalog_stats"
    },
    {
      "description": "Overview of one WIA standard by slug: README excerpt (up to 4,000 chars), list of available spec files, ebook languages and links. / 슬러그로 표준 개요.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "slug": {
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[A-Za-z0-9._-]+$",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_standard"
    },
    {
      "description": "Read a specification markdown file of a WIA standard (e.g. PHASE-1-DATA-FORMAT.md) in pages of up to 12,000 characters. Use get_standard first to list files. / 표준 명세 파일을 페이지 단위로 읽는다.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "file": {
            "description": "A file name returned by get_standard.spec_files",
            "maxLength": 120,
            "minLength": 1,
            "pattern": "^[A-Za-z0-9._-]+$",
            "type": "string"
          },
          "max_chars": {
            "default": 8000,
            "maximum": 12000,
            "minimum": 500,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "minimum": 0,
            "type": "integer"
          },
          "slug": {
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[A-Za-z0-9._-]+$",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "read_standard_spec"
    },
    {
      "description": "Search the WIA standards catalog (hundreds of WIA-authored specifications across industries). Returns id, title, short summary and links. These are WIA's own standards, not ISO/IEC international standards. / WIA 표준 카탈로그를 검색한다.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 8,
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "maximum": 2000,
            "minimum": 0,
            "type": "integer"
          },
          "query": {
            "description": "Keywords, e.g. \"ai safety\"",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_standards"
    }
  ]
}

What the leaf hashes

{"body":"b1afdc5c8a41b69e9e57ee4d3ed4751260010b15913bbe62e0676b426522fc9e","id":563833,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793137733363656,"prev":null,"subject":"5a81479b-8591-4197-b378-1a25f478ed85","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. 0xf1dcea5eff0fac1af3eb045eeb3bbe8316a56b9b13bfec1cab3f70d6f8da81c0
2. 0x7ccf8744312bd0592fd946c4d635644b82b375063ecd92508ca863b5edc92ce0
3. 0xee9a3718bdd351b90b46260043075d6ac27f01c8eb8a0f34f75f7c66e13e5caa
4. 0x31ee4370e8d3208e0f01d87d19b3cb9407428d5f8f724aac44dd0e7b927b40c6
5. 0x87fce3e73f2b73f36628c691355333baf4b936f8ee8bdcd9709060c741e63851
6. 0xc6d953e9806456efd231238a6dbd45b9ed4b9949a8611d5aacd344676a9212a8
7. 0x13da0d74722c32431ec73fe29c6f4c4017250044eb62d4aa9442d35b72604837
8. 0x4879355ff86c6741825c4c9ad6bd79434e288b29791e84fa23a8044619e20d8f
9. 0x623664f0e525c3fcc2e15ba03e0cf139c2a4451c82ed94fc3d19d8c87ed9f35c
10. 0x885dedb11c9f215b861626770d162230c3d583157caa062b453cc22d1d3d2674
11. 0x2ea101b6388c288056f45a9fd999778249a27a3187a1c19c21450a69a4412959
12. 0xc76e7a2a7d72384a3306a63b271737f83983bf378cba5d40efe61cfc57eb7d40
13. 0x47993ad5e402c748d96928c5127292d12f5f590d15cf544698f6bb348ad7dc9b
14. 0xce1471491ffb52101d7cd9884cca0fb37a9496f6e8250375054907d24a35d04f
15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4