Evidence row 572978

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Find Clef instructional guides by words in the title and description. Guides are not file converters.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "query": {
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "find_music_guides"
    },
    {
      "description": "Spell a supported chord as piano pitches with octave and MIDI values. This does not create a rhythmic arrangement.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "octave": {
            "default": 4,
            "maximum": 6,
            "minimum": 1,
            "type": "integer"
          },
          "symbol": {
            "maxLength": 40,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "symbol"
        ],
        "type": "object"
      },
      "name": "spell_piano_chord"
    },
    {
      "description": "Convert six-string ASCII guitar tab to sounding piano pitches. Tab spacing does not specify note duration. No GP files or audio uploads.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "capo": {
            "default": 0,
            "maximum": 12,
            "minimum": 0,
            "type": "integer"
          },
          "tab": {
            "maxLength": 20000,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "tab"
        ],
        "type": "object"
      },
      "name": "tab_to_piano_notes"
    },
    {
      "description": "Transpose chord symbols, including slash bass notes. Does not process audio, lyrics, or notation files.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "chords": {
            "maxLength": 10000,
            "minLength": 1,
            "type": "string"
          },
          "preferFlats": {
            "default": false,
            "type": "boolean"
          },
          "semitones": {
            "maximum": 24,
            "minimum": -24,
            "type": "integer"
          }
        },
        "required": [
          "chords",
          "semitones"
        ],
        "type": "object"
      },
      "name": "transpose_chords"
    }
  ]
}

What the leaf hashes

{"body":"6a1bf9d19815728da9e07bc9795a94722827cdb3fc8ab45bc2be27f161abbd4e","id":572978,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793140918526686,"prev":null,"subject":"316a9cdd-4831-47fb-9ec8-5c210a69a0dd","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. 0x646a2cfbb5558667683d111506d93baa269298f9029a497f38a6826c8cb7d09b
2. 0xc8968642d70633d724a0bd79194cbc03f0941d7ea45555e43ea5486942feb196
3. 0x22751d2bc8554fe853233a41b64a7fab8aacd9dcb7d6e8d98d3869f0a0721863
4. 0x5c258ae5c8be992b46d161d16ced38fc2eab73f27d6a658dbb1a9ca19e00486e
5. 0x510e14c9ab2a4f037fd78d89288f2455e2847a8cb46f1eba5d5b245f7834ad1b
6. 0x00deb058161185c35f9ac9cca0cc111ffab2a36ad6451c1cd0740b2763ca5ed4
7. 0x65884a907e77d8b4c393a85cbb70e6bdb00bb2b52b12dfcd42d5ec5dd9117daf
8. 0x1a8cde84fbfcb58ce442314cf2bc1d1f8713186625d85d8f68382d01ae9abef4
9. 0x0d73da1ad06685a762ee5d637ae139d147652ea6e30ad2a323fcd4175dbcffd3
10. 0xfd70b3e83b7034b7a68c1b671770fdd0559e9a942b56b74a5228c4886ee50f89
11. 0xcd76c41dfcff13156d2af2cc6dfbdeb2edaf4851321395cdd37af3eba0f1a0a0
12. 0x188b042e533a0dd4a8a233ee981012ab6f4d30710df7807c0e36d3d969103a6d
13. 0x4c257542b0421f909cc313308d9054fb29b4b46d9dca1b83169d04797233fda2
14. 0x3c5462812bd2f841e3d7deefc01555f18262fe5e0d5a7eb155330b7a7cb0388e
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4