Evidence row 67900

Observed 26 Oct 2026, 14:37 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://saylorinnovations.com/api/music/delay-times
Recorded: 26 Oct 2026, 14:37 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: ba48aeef71d7454602e124b8c270d4f15e181a5af403aee5e96fad6ee60e72e5
Leaf: 0x62cc6d4b9ff724a99fdae8a0cd130a323e19fe75d27c25f89dc1f8209c227199

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/music/delay-times"
    ]
  ],
  "name": "Saylor Innovations  Tempo-Synced",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:music:delay-times",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:music:delay-times",
          "name": "USD Coin",
          "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:music:delay-times",
          "name": "USD Coin",
          "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:music:delay-times",
          "reference": "7zpksouFqRn7uqEtoYwidTj7pkTjThncSKj2NV6i6LmX",
          "session": "eyJhcnRpY2xlSWQiOiJtdXNpYzpkZWxheS10aW1lcyIsInJlZmVyZW5jZSI6Ijd6cGtzb3VGcVJuN3VxRXRvWXdpZFRqN3BrVGpUaG5jU0tqMk5WNmk2TG1YIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI5OTczNTI0NTl9.1Ht-0-M2LkDsPfkBXe0_sVtWP6hYN5SyP3-5OEo79Q0"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:music:delay-times",
          "reference": "EeJAbAvi2aL1KPnVFMoUrWpCvAHqmpT3yBvw3n2V9J9G",
          "session": "eyJhcnRpY2xlSWQiOiJtdXNpYzpkZWxheS10aW1lcyIsInJlZmVyZW5jZSI6IkVlSkFiQXZpMmFMMUtQblZGTW9VcldwQ3ZBSHFtcFQzeUJ2dzNuMlY5SjlHIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI5OTczNTI0NTl9.CLA33hZaFrOzpW3m0hKKQfI7sxYOYyfum9ioTGyDMo0"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "96334",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:music:delay-times",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "99314",
          "reference": "6YmL6YUheMniZyDT6DtfAi9tzcwFCzTpZ88WXuzaahjT",
          "session": "eyJhcnRpY2xlSWQiOiJtdXNpYzpkZWxheS10aW1lcyIsInJlZmVyZW5jZSI6IjZZbUw2WVVoZU1uaVp5RFQ2RHRmQWk5dHpjd0ZDelRwWjg4V1h1emFhaGpUIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjk2MzM0LCJleHAiOjE3OTI5OTczNTI0NTl9.1OnVDHRbkGAQugtoSE4eLzcdK3CRvVlWoU1LYAQSeOk",
          "solUsdPrice": 100.69
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Delay and LFO times for every note value, reverb pre-delay and decay, samples and bar length",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "beats_per_bar": "4",
              "bpm": "120",
              "sample_rate": "48000"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "eighth_ms": 250,
              "quarter_ms": 500
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "beats_per_bar": {
                      "description": "optional numerator of the time signature, default 4 (query)",
                      "type": "string"
                    },
                    "bpm": {
                      "description": "required tempo in beats per minute (query)",
                      "type": "string"
                    },
                    "sample_rate": {
                      "description": "optional default 48000 (query)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "bpm"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792548358/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-26T06:47:12.499Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T06:47:12.327Z"
    },
    "resource": "https://saylorinnovations.com/api/music/delay-times",
    "serviceName": "Saylor Innovations  Tempo-Synced",
    "tags": [
      "music",
      "theory",
      "chords",
      "scales",
      "guitar"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Delay and LFO times for every note value, reverb pre-delay and decay, samples and bar length"
}

What the leaf hashes

{"body":"ba48aeef71d7454602e124b8c270d4f15e181a5af403aee5e96fad6ee60e72e5","id":67900,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025464916247,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/music/delay-times","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON