Evidence row 1054135

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "A maimai DX player's rating from their scores: the new 15 (b15) and old 35 (b35), with each chart's rating, and the scores whose next rank would raise the rating most. Achievements are integers in 1/10000 of a percent: 100.7543% is 1007543.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "scores": {
            "description": "The scores of the player, up to 300; of a chart given twice the better one counts",
            "items": {
              "properties": {
                "achievement": {
                  "description": "Achievement in 1/10000 of a percent, an integer: 100.7543% is 1007543, 99.5% is 995000",
                  "maximum": 1010000,
                  "minimum": 0,
                  "type": "integer"
                },
                "combo": {
                  "description": "Combo lamp: fc, fcp (FC+), ap or app (AP+). AP and AP+ add 1 to the rating.",
                  "enum": [
                    "fc",
                    "fcp",
                    "ap",
                    "app"
                  ],
                  "type": "string"
                },
                "difficulty": {
                  "description": "basic, advanced, expert, master or remaster",
                  "maxLength": 40,
                  "type": "string"
                },
                "song": {
                  "description": "Sheet ID (dsht_…), or song ID or name with type and difficulty",
                  "maxLength": 200,
                  "minLength": 1,
                  "type": "string"
                },
                "type": {
                  "description": "dx or std",
                  "enum": [
                    "dx",
                    "std",
                    "utage",
                    "utage2p"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "song",
                "achievement"
              ],
              "type": "object"
            },
            "maxItems": 300,
            "minItems": 1,
            "type": "array"
          },
          "server": {
            "description": "Game server the player plays on: jp (default), intl, usa or cn",
            "maxLength": 20,
            "type": "string"
          },
          "suggestions": {
            "description": "Most suggestions of scores to improve, 0 to 50. Default 10.",
            "maximum": 50,
            "minimum": 0,
            "type": "integer"
          },
          "version": {
            "description": "Game version whose new charts make the new 15 (b15): PRiSM PLUS. Default: the newest on the server.",
            "maxLength": 40,
            "type": "string"
          }
        },
        "required": [
          "scores"
        ],
        "type": "object"
      },
      "name": "calculate_best50"
    },
    {
      "description": "The rating a maimai DX chart gives for an achievement, the achievement a rating needs, and the rating of each rank (S to SSS+). Give a chart (looked up with its current internal level) or an internal level. Achievements are integers in 1/10000 of a percent: 100.7543% is 1007543.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "achievement": {
            "description": "Achievement in 1/10000 of a percent, an integer: 100.7543% is 1007543, 99.5% is 995000",
            "maximum": 1010000,
            "minimum": 0,
            "type": "integer"
          },
          "combo": {
            "description": "Combo lamp: fc, fcp (FC+), ap or app (AP+). AP and AP+ add 1 to the rating.",
            "enum": [
              "fc",
              "fcp",
              "ap",
              "app"
            ],
            "type": "string"
          },
          "difficulty": {
            "description": "Difficulty of the chart of song: basic … remaster",
            "maxLength": 40,
            "type": "string"
          },
          "internal_level": {
            "description": "Internal level (譜面定数) instead of a chart: 13.7",
            "maximum": 15,
            "minimum": 1,
            "type": "number"
          },
          "server": {
            "description": "Game server (jp, intl, usa, cn), whose internal level is used where it differs. Default jp.",
            "maxLength": 20,
            "type": "string"
          },
          "song": {
            "description": "The chart: a sheet ID (dsht_…), or a song ID or name with type and difficulty. Or give internal_level.",
            "maxLength": 200,
            "type": "string"
          },
          "target_rating": {
            "description": "A rating of the chart to reach: the lowest achievement that gives it",
            "maximum": 400,
            "minimum": 1,
            "type": "integer"
          },
          "type": {
            "description": "Type of the chart of song: dx or std",
            "enum": [
              "dx",
              "std",
              "utage",
              "utage2p"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "calculate_rating"
    },
    {
      "description": "Details of a maimai DX song and its charts (譜面): level, internal level (譜面定数) now and in past versions, note counts, note designer, release date, servers and community tags. Filter by type, difficulty and server.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "difficulty": {
            "description": "Only the charts of this difficulty: basic, advanced, expert, master or remaster (MAS, Re:MAS work)",
            "maxLength": 40,
            "type": "string"
          },
          "lang": {
            "description": "Language of the tag names: en (default), ja, zh-Hans or zh-Hant. Use the language of the user.",
            "enum": [
              "en",
              "ja",
              "zh-Hans",
              "zh-Hant"
            ],
            "type": "string"
          },
          "server": {
            "description": "Game server: jp, intl, usa or cn. Only the charts on that server, with its own level where it differs. Omitted: every chart, with the servers of each.",
            "maxLength": 20,
            "type": "string"
          },
          "song": {
            "description": "Song ID (dsng_…) or sheet ID (dsht_…) from search_songs. A title or alias that only one song has works too.",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          },
          "type": {
            "description": "Only the charts of this type: dx, std, utage or utage2p",
            "enum": [
              "dx",
              "std",
              "utage",
              "utage2p"
            ],
            "type": "string"
          }
        },
        "required": [
          "song"
        ],
        "type": "object"
      },
      "name": "get_sheet"
    },
    {
      "description": "Finds maimai DX songs by title, alias, nickname, romanization or artist, best match first, with the level and internal level (譜面定数) of each chart. Use it to get the song ID of a song the user names.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "limit": {
            "description": "Most songs to return, 1 to 50. Default 10.",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Title, alias, nickname, romanization or artist, in any language: ウミユリ海底譚, umiyuri, 海底谭, n-buna. Width, case, kana and punctuation are ignored.",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          },
          "type": {
            "description": "Only the songs that have a chart of this type, and only those charts: dx, std, utage or utage2p",
            "enum": [
              "dx",
              "std",
              "utage",
              "utage2p"
            ],
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_songs"
    }
  ]
}

What the leaf hashes

{"body":"fde811d1929b88278a052fb644af755cda8f24dfa8cd4245df396daa58f70687","id":1054135,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793312810652639,"prev":null,"subject":"ea147bae-d106-4447-a636-7f357c290b68","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0x6a98997b12946e8768c1c5d03bd1fb2881a135838dbc7c9d8ae2d6afe4b310e1
2. 0xe3621b2d0e263585971a4f105d263958501cf3283f275b7d9686880882888789
3. 0x82990a4c7146244bcfb56ecd23ebc8988810d07a713941e97c05032fe47ebe38
4. 0x62fb6c964c331b810e93d866baeba04e91e4bdfa31ae27eced4edef9900a3a31
5. 0x20d7b7415d6d4a469950e025435eaa4d1247d158ca949d5369cdca086b035bef
6. 0x2521d358488f5a5b32730d79e5975944f84478d311a4beef1a150f70f52861f3
7. 0xd51d18007dd20928a7b3a279b37c7b1320cee5801ef411e8fc73e3119afca97c
8. 0x35ffd06dcf4362d95f06e2e983de85bfef63e9d2b83ea99904b231589d05d0bb
9. 0x18cddcd19c0323dbf78a36ddd5c79db90351d470df495aad497662f5834d237d
10. 0x126e79ac2018d00889a5d756cd9147d11b03b94af34b1fa6b8c91a2e3089e6d0
11. 0xf3ab0bba5d2c37cc9530fe7c80c74646d8a3c98661650be751cac7c5cc4300c5
12. 0xd1b026958b87e7817d492c5f8133035d465e6221f158dbb4a44448c14b220dbc
13. 0x0a70f94ba839c32042590eb96f6114034cb5b3ed8dd1b48fb4158efe13cb8084
14. 0xec2e740df411d32a080c5e65c8b0ca511ad665b213532cee58525a97aebd2893
15. 0x60b5befbd81f025904c8a3936b7ba86e3245ad5b37c615d01d42aa3227e3ed2e
16. 0xe2d603cd6f987214550319ad4fa39952b6098bc5c1b20893b6b80e8d82a79934
17. 0x91f12a2db1e2c1be07cbe4de3981a37a33051a36d3c3eee5a260804add6d1d75
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1