Evidence row 2201542

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://music-theory.x402tookit.com/scale"
    ]
  ],
  "name": "Music Theory",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Spell a scale or mode on any root: major, minor, modes, harmonic and melodic minor, pentatonic, blues, whole tone.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "root": "D",
              "type": "dorian"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "aliases": [],
              "asOf": "2026-10-11T14:26:14.786Z",
              "degraded": false,
              "degrees": [
                "1",
                "2",
                "…5 more"
              ],
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "midiFromRootOctave4": [
                62,
                64
              ],
              "notChecked": [
                "scales not listed (octatonic, bebop, exotic scales)",
                "which spelling a particular score prefers for theoretical keys",
                "…1 more"
              ],
              "noteCount": 7,
              "notes": [
                "D",
                "E",
                "…5 more"
              ],
              "pitchClasses": [
                2,
                4
              ],
              "reasons": [
                "A mode of the major scale (2nd degree).",
                "Each letter name is used once in 7-note scales."
              ],
              "root": "D",
              "semitonesFromRoot": [
                0,
                2
              ],
              "source": "computed locally",
              "stepPattern": "W H W W W H W",
              "summary": "D dorian: D E F G A B C.",
              "type": "dorian",
              "verdict": "SPELLED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "root": {
                      "description": "Root note: C, F#, Bb, Eb",
                      "type": "string"
                    },
                    "type": {
                      "description": "Scale name (default major): major, natural-minor, dorian, phrygian, lydian, mixolydian, locrian, harmonic-minor, melodic-minor, major-pentatonic, minor-pentatonic, blues, major-blues, whole-tone, phrygian-dominant",
                      "type": "string"
                    }
                  },
                  "required": [
                    "root"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "aliases": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "degrees": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "midiFromRootOctave4": {
                      "items": {
                        "type": "number"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "noteCount": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notes": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "pitchClasses": {
                      "items": {
                        "type": "number"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "root": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "semitonesFromRoot": {
                      "items": {
                        "type": "number"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "stepPattern": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "type": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:39:51.47Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T23:39:51.303Z"
    },
    "resource": "https://music-theory.x402tookit.com/scale",
    "serviceName": "Music Theory",
    "tags": [
      "music",
      "scales",
      "modes",
      "theory"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Spell a scale or mode on any root: major, minor, modes, harmonic and melodic minor, pentatonic, blues, whole tone."
}

What the leaf hashes

{"body":"4529b1d40e2bd87a689d5c05c6b4347083ed9349d244e8813e96b685c0aeb41d","id":2201542,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646806593497,"prev":null,"subject":"x402_bazaar:https://music-theory.x402tookit.com/scale","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xad61508cb6003e23c55fc826b1e2bc0887120e8021b97dae8f8bd3dbe5a45ed2
2. 0xa1874585afb033ae8b67ab0af485a007c1991a60c37cb57d94d81b7e10577420
3. 0x0dab8af1927f0ede72ad1ec148919e93a15bfbe1f5a55164512801b81d4f4aca
4. 0xb6915e97d4595e5dead7e4a9569edd28c6e90fdc8ef0109e3a6e6f8eda07e418
5. 0x215b6d126f8d0097b79b410b73245d8edc2dc363cf4e047d7669b897bad39475
6. 0xa945276477ed20fff85c58c1af713351a067b4be11a50a438aea33564bc98b39
7. 0x7926ad56bbfec57bb2d988c8e7644febdd108d393c4d17c736193b6f99d68980
8. 0x18ae7ae57e85b79aeedd86e3ed1d0f9e753d91020c307f8e49e00d5cf2597586
9. 0xed1bceb57b677ebf7cf647be5403f1a0fab0f38d2d76d096155101e8ab85d292
10. 0x4e89a9f7a5fcf4210a94a8df735e6db228669c38c3a5bc02691f578029c3e745
11. 0x72493f063e28e11678b7e689efc4f85a55ddb2609714716e599e615a51daf06d
12. 0x4b689db5a9e6139b1b496c240f18ec19fa5b0f0bc49dacaed806958889560cc9
13. 0x30482ffd581ea067af14f15cf3c17e7dcb174f749e858ecded170a1f5f75cc59
14. 0x27deeb1ef1692b4773e73c16b6d8d0cdf4251fe2660821e5336f57539770fd2f
15. 0x793184605629cd36ba80a07cbe115ca35e8923297bf024260c6f5c06b255f638
16. 0x2922573a524a0694086782ac45fa3083d3fc3f6a2a479b2105e1e2f06b2916f7
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af