Evidence row 276350

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Get the four IELTS Writing assessment criteria, the Task 1 and Task 2 differences, and plain-language summaries of Band 5 to Band 8. Useful for essay self-review, feedback prompts and study plans.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "get_band_descriptors"
    },
    {
      "description": "Read one public IELTS Writing Task 2 sample answer in full, including the prompt, model essay text, reference band and word count. Use list_writing_samples first to find a sampleId.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "sampleId": {
            "description": "Public sample ID returned by list_writing_samples.",
            "type": "string"
          }
        },
        "required": [
          "sampleId"
        ],
        "type": "object"
      },
      "name": "get_writing_sample"
    },
    {
      "description": "List public IELTS Speaking Part 2 cue card topics from the Youshow IELTS speaking question bank. Returns the cue card prompts, the points to cover and related Part 3 questions, in English or Chinese.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "description": "Number of cue cards to return. Defaults to 5, capped at 10.",
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          },
          "locale": {
            "description": "Language of the cue card content. Defaults to zh.",
            "enum": [
              "en",
              "zh"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "list_cue_cards"
    },
    {
      "description": "List public IELTS Writing Task 2 sample answers from Youshow IELTS. Returns the essay prompt, source paper, reference band, word count and a short preview for up to five model essays. Use get_writing_sample with a sampleId to read the full essay.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "description": "Number of public samples to return. Defaults to 5, capped at 5.",
            "maximum": 5,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "list_writing_samples"
    }
  ]
}

What the leaf hashes

{"body":"add061ae283cc83af617674a47a915a465e28a5601ea4727ce2df33663bf4867","id":276350,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793041201646285,"prev":null,"subject":"7449a4b5-17c5-4bcc-ace0-fdea2fe1e113","subject_kind":"endpoint"}

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. 0xa9e26de9d1bc764c9479f846f031c792d783d7eb71158b8d5583432e3baa3342
2. 0x2ca45afd6fc2dfd81c66f02419d1348a9f6aad5dbf0c5781110b1aef7cb1e015
3. 0x0742043b5432324b25cf3147e504af711953f99b0c383adcf8f4e5b62a4b9972
4. 0x957440800b679f2fad96778c41355c96d2c70d1cc2bc1610ad6ec5b81a80b24c
5. 0x9d8384af3ae713a39bb07f08fb5e512f1e5ed268dd2d2688312fb035508fcf26
6. 0xf40b4e874dc6d91e9ac5f3b6d683fc0ebf36d7c367f72acf8c87356e622e657e
7. 0x208de76f3fe153507abcffcb1c65c393b9db7909ffb3caf49b28e331de026e7f
8. 0x8f14ab6c88413edb8a4c4942f3c7022cc8f31824d3dcf1c22f0b35b7f531ee73
9. 0xc580924a5a23f25de4357c17fc84cd3fafa3d3afccfd4e18ea2cb141221341eb
10. 0x382774117c6a99ced4320ca176d4e72cc7226f2fa6e3d8ac0173511fe55d6919
11. 0x55ba80743bf45624f0b04651dfd0a37e2a85f91f45e334ff14efbb74a49dd361
12. 0x09a19b8d31a6e948e5051cb72b98b1d2b2bfe053f62d6d24d61c22b3ed1c3f24
13. 0x4700d6dfdb40e52e2ceb8ffe62c75f3f708d23452f828255fd003d795f5d9d66
14. 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae