Evidence row 578996

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Build a notification sound from your own layer design and get an editor link for it. The link opens the sound in the editor, where the user plays, tweaks and downloads it. Returns the link, the stored sound and warnings for any value that was out of range, rounded or ignored. Read get_sound_guide first.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "duration": {
            "default": 0.1,
            "description": "Note length. How long each note is held, shared by every layer and every repeat. Unit: s. Range 0.003 to 5, step 0.001, default 0.1.",
            "maximum": 5,
            "minimum": 0.003,
            "type": "number"
          },
          "effect": {
            "additionalProperties": false,
            "description": "One effect over the whole sound.",
            "properties": {
              "amount": {
                "default": 0.3,
                "description": "Amount. Effect mix. 0 is dry, 1 is fully wet. Unit: 0 to 1. Range 0 to 1, step 0.01, default 0.3.",
                "maximum": 1,
                "minimum": 0,
                "type": "number"
              },
              "type": {
                "default": "none",
                "description": "Effect. One effect over the whole sound. Options: None: dry, no effect; Reverb: soft room, a gentle space; Chamber: big hall, long airy tail; Echo: repeats that fade away; Ping-Pong: echo that bounces left and right; Chorus: wider and shimmery; Phone: tiny speaker sound; Crunch: rough 8-bit edge.",
                "enum": [
                  "none",
                  "reverb",
                  "chamber",
                  "echo",
                  "pingpong",
                  "chorus",
                  "phone",
                  "crunch"
                ],
                "type": "string"
              }
            },
            "type": "object"
          },
          "layers": {
            "description": "Layers play together, each from its own Start after. Leave out any field at its default. Up to 16 layers.",
            "items": {
              "additionalProperties": false,
              "properties": {
                "amAmount": {
                  "default": 0,
                  "description": "Flutter. Tremolo depth: how far the level dips. Unit: 0 to 1. Range 0 to 1, step 0.01, default 0.",
                  "maximum": 1,
                  "minimum": 0,
                  "type": "number"
                },
                "amRate": {
                  "default": 8,
                  "description": "Flutter speed. Tremolo speed. Unit: Hz. Range 0.5 to 50, step 0.1, default 8.",
                  "maximum": 50,
                  "minimum": 0.5,
                  "type": "number"
                },
                "attack": {
                  "default": 0.005,
                  "description": "Attack. Time from silence to full level. Under 0.005 s gives a hard click at the start. Unit: s. Range 0.0005 to 1, step 0.0005, default 0.005.",
                  "maximum": 1,
                  "minimum": 0.0005,
                  "type": "number"
                },
                "decay": {
                  "default": 0.3,
                  "description": "Decay. Time from full level down to the Hold level while the note is held. Unit: s. Range 0.003 to 2, step 0.001, default 0.3.",
                  "maximum": 2,
                  "minimum": 0.003,
                  "type": "number"
                },
                "delay": {
                  "default": 0,
                  "description": "Start after. When this layer starts, counted from the start of the sound. Spaces the notes of a melody. Unit: s. Range 0 to 5, step 0.01, default 0.",
                  "maximum": 5,
                  "minimum": 0,
                  "type": "number"
                },
                "enabled": {
                  "default": true,
                  "description": "On. A layer that is off stays in the sound but is silent.",
                  "type": "boolean"
                },
                "fmAmount": {
                  "default": 0,
                  "description": "Wobble. Vibrato depth. 1 swings the pitch 4 semitones each way. Unit: 0 to 1. Range 0 to 1, step 0.01, default 0.",
                  "maximum": 1,
                  "minimum": 0,
                  "type": "number"
                },
                "fmRate": {
                  "default": 6,
                  "description": "Wobble speed. Vibrato speed. Unit: Hz. Range 0.5 to 50, step 0.1, default 6.",
                  "maximum": 50,
                  "minimum": 0.5,
                  "type": "number"
                },
                "freq": {
                  "default": 880,
                  "description": "Pitch. Note pitch. On a noise layer it is the centre of the hiss band. Unit: Hz. Range 40 to 4000, step 1, default 880.",
                  "maximum": 4000,
                  "minimum": 40,
                  "type": "number"
                },
                "gain": {
                  "default": 1,
                  "description": "Level. Layer loudness. Unit: 0 to 1. Range 0 to 1, step 0.01, default 1.",
                  "maximum": 1,
                  "minimum": 0,
                  "type": "number"
                },
                "noiseColor": {
                  "default": "white",
                  "description": "Noise type. Noise colour. Options: White: bright, even hiss; Pink: softer, like wind; Brown: deep rumble. Noise layers only.",
                  "enum": [
                    "white",
                    "pink",
                    "brown"
                  ],
                  "type": "string"
                },
                "pan": {
                  "default": 0,
                  "description": "Balance. Stereo position. -1 is left, 1 is right. Unit: -1 to 1. Range -1 to 1, step 0.01, default 0.",
                  "maximum": 1,
                  "minimum": -1,
                  "type": "number"
                },
                "pitchSlide": {
                  "default": 0,
                  "description": "Slide. Pitch glide over the Note length, up when positive, down when negative. Unit: semitones. Range -24 to 24, step 1, default 0.",
                  "maximum": 24,
                  "minimum": -24,
                  "type": "number"
                },
                "randomNoise": {
                  "default": false,
                  "description": "Random. New noise on every play. Keep false. Noise layers only.",
                  "type": "boolean"
                },
                "release": {
                  "default": 0.4,
                  "description": "Ring out. Fade after the note ends. The main tail control. Unit: s. Range 0.003 to 5, step 0.001, default 0.4.",
                  "maximum": 5,
                  "minimum": 0.003,
                  "type": "number"
                },
                "repeat": {
                  "default": 1,
                  "description": "Times. How many times the layer plays its note. Unit: count. Range 1 to 5, step 1, default 1.",
                  "maximum": 5,
                  "minimum": 1,
                  "type": "number"
                },
                "repeatGap": {
                  "default": 0.1,
                  "description": "Gap. Silence between one repeat ending and the next starting. Unit: s. Range 0.02 to 1, step 0.01, default 0.1.",
                  "maximum": 1,
                  "minimum": 0.02,
                  "type": "number"
                },
                "seed": {
                  "description": "Noise seed. Fixes the noise pattern so the sound is the same every play. Set one on every noise layer. Noise layers only.",
                  "maximum": 2147483647,
                  "minimum": 0,
                  "type": "integer"
                },
                "sharpness": {
                  "default": 1.2,
                  "description": "Sharpness. Width of the hiss band. Low is a wide hiss, high is close to a pitched whistle. Range 0.5 to 20, step 0.1, default 1.2. Noise layers only.",
                  "maximum": 20,
                  "minimum": 0.5,
                  "type": "number"
                },
                "sustain": {
                  "default": 0,
                  "description": "Hold. Level kept after Decay while the note is held. 0 is a struck or plucked note, 1 an organ-like note. Unit: 0 to 1. Range 0 to 1, step 0.01, default 0.",
                  "maximum": 1,
                  "minimum": 0,
                  "type": "number"
                },
                "wave": {
                  "default": "sine",
                  "description": "Wave. Wave shape. Options: Sine: smooth and pure; Triangle: soft and woody; Saw: bright and buzzy; Square: sharp and electronic; Noise: hiss, wind and rumble.",
                  "enum": [
                    "sine",
                    "triangle",
                    "sawtooth",
                    "square",
                    "noise"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "maxItems": 16,
            "minItems": 1,
            "type": "array"
          },
          "name": {
            "description": "Name. Sound name, up to 32 characters.",
            "maxLength": 32,
            "type": "string"
          }
        },
        "required": [
          "layers"
        ],
        "type": "object"
      },
      "name": "create_sound"
    },
    {
      "description": "Get the full design of a built-in sound and its editor link, to use as a starting point for create_sound.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "group": {
            "description": "Group to look in, when a name is in more than one.",
            "enum": [
              "featured",
              "classics",
              "chords",
              "messages",
              "alerts",
              "arcade",
              "chiptune",
              "chiptunes",
              "scifi",
              "nature",
              "spooky",
              "motion"
            ],
            "type": "string"
          },
          "name": {
            "description": "Sound name, e.g. \"Tri-Tone\".",
            "type": "string"
          }
        },
        "required": [
          "name"
        ],
        "type": "object"
      },
      "name": "get_library_sound"
    },
    {
      "description": "How sounds are built: layers, envelope, pitch, timing, noise, levels and effects, with example designs. Read it once before designing.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "get_sound_guide"
    },
    {
      "description": "List the built-in sounds by group, or search them by name. Without arguments it lists every group with its sound names. Use a close built-in sound as a starting point.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "group": {
            "description": "Only this group, with each sound described.",
            "enum": [
              "featured",
              "classics",
              "chords",
              "messages",
              "alerts",
              "arcade",
              "chiptune",
              "chiptunes",
              "scifi",
              "nature",
              "spooky",
              "motion"
            ],
            "type": "string"
          },
          "query": {
            "description": "Search sound names, e.g. \"bell\" or \"coin\".",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "list_library_sounds"
    },
    {
      "description": "Turn a share link (or the code after #s=) back into the sound design, to change it and call create_sound again.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "link": {
            "description": "A share link, \"#s=...\" or the bare code.",
            "type": "string"
          }
        },
        "required": [
          "link"
        ],
        "type": "object"
      },
      "name": "read_sound"
    }
  ]
}

What the leaf hashes

{"body":"e59348abc93e8618cce332c3b5e63106853982b731aa6591f8a9e2ac8adbd2a3","id":578996,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793143251247008,"prev":null,"subject":"61363959-79b7-40ef-8509-2498bb5f4380","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. 0x869f56ef5b5cec95eaf80e6fd60af0567993ca87e7b336abf7e8912afbeabd21
2. 0x4cab5a3e4362f06167be31d9e779e5ba04ce3e7018cf3ca899c80f5cbf34c056
3. 0x7ed70367a5f050f6ff88becf789f90c4bd3efa456d88a6a42c9939f4a0c2995c
4. 0x0f2c56f035550d3dbd801d1f2e04f390e7ecaf07f32ef00459d20331b1890385
5. 0x46b03370ef78dbb83c7a5e81ed792a9f8f84b4a4163c72c4d53c7374f8c68351
6. 0x5dbaf2b951b35076571755fa790018208044b1c011f4c30ea9b6e251841a22fb
7. 0xf4503b5c1c9d167ab7c76de7c7adc9f63458912e9c56a6de9ce0203b07f17c69
8. 0x9b71a1e41e5d54d4fa9df3fc1520d57006200f1b29e8a86c5a1c10c1714eeac8
9. 0x6379cb39cc0041e9f8862ab6094a764bf7f93412abd49a57f9d6f2204b426bf1
10. 0x62b856b44e16d175a37058c6919f0c4acdf69afdf756c53db4e59cf54aa2a004
11. 0xa422cf0aa2444c11b145e66f51596fb564431c83c30bc600fea79ecf01652ab4
12. 0xe5ce8ac1ba4d6152605e0a032058cac5906d85f82e3fda1ad44852337b713b17
13. 0x07d414626f116f3edc6ddb34183ed02538c3a805fec6db00f9d764f8fd595d04
14. 0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4