← The evidence ledger
Evidence row 126760
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://x402.professorsausages.com/sfx/mutate
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- bc1189487b8616a54b6f3fb1d365214af78bfb547b0647df1a9a66d3c76180a3
- Leaf
- 0x1fa74bd65a2c0a124cc1cd32c2b20b7e64cb95e63c06cd1e1637c7854e98f1d0
What was observed
{
"endpoints": [
[
"x402",
"https://x402.professorsausages.com/sfx/mutate"
]
],
"name": "8-bit SFX Generator",
"owner_address": "0x54ebfcf3870439b9db62381848c5dabc05c70d5b",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x54ebFCF3870439B9db62381848c5DabC05c70d5B",
"scheme": "exact"
}
],
"description": "Mutate a known-good seed's sound (classic sfxr mutate) — nearby variations by parameter perturbation",
"extensions": {
"bazaar": {
"category": "audio",
"info": {
"input": {
"method": "GET",
"queryParams": {
"amount": "0.1",
"bits": "16",
"format": "wav",
"preset": "coin",
"sampleRate": "44100",
"seed": "12345"
},
"type": "http"
},
"output": {
"properties": {
"about": {
"type": "string"
},
"amount": {
"type": "number"
},
"bitsPerSample": {
"enum": [
8,
16
],
"type": "integer"
},
"byteLength": {
"type": "integer"
},
"clipped": {
"type": "integer"
},
"durationMs": {
"type": "integer"
},
"format": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string"
},
"formatOverride": {
"properties": {
"applied": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string"
},
"detail": {
"type": "string"
},
"overriddenBy": {
"items": {
"enum": [
"bits",
"sampleRate"
],
"type": "string"
},
"type": "array"
},
"requested": {
"type": "string"
}
},
"required": [
"requested",
"applied",
"overriddenBy",
"detail"
],
"type": "object"
},
"freshness": {
"properties": {
"age_seconds": {
"minimum": 0,
"type": "integer"
},
"as_of": {
"type": "string"
},
"max_age_seconds": {
"minimum": 0,
"type": [
"integer",
"null"
]
},
"note": {
"type": "string"
},
"tier": {
"type": "string"
}
},
"required": [
"tier",
"as_of",
"age_seconds",
"max_age_seconds"
],
"type": "object"
},
"mimeType": {
"enum": [
"audio/wav"
],
"type": "string"
},
"params": {
"properties": {
"p_arp_mod": {
"type": "number"
},
"p_arp_speed": {
"type": "number"
},
"p_base_freq": {
"type": "number"
},
"p_duty": {
"type": "number"
},
"p_duty_ramp": {
"type": "number"
},
"p_env_attack": {
"type": "number"
},
"p_env_decay": {
"type": "number"
},
"p_env_punch": {
"type": "number"
},
"p_env_sustain": {
"type": "number"
},
"p_freq_dramp": {
"type": "number"
},
"p_freq_limit": {
"type": "number"
},
"p_freq_ramp": {
"type": "number"
},
"p_hpf_freq": {
"type": "number"
},
"p_hpf_ramp": {
"type": "number"
},
"p_lpf_freq": {
"type": "number"
},
"p_lpf_ramp": {
"type": "number"
},
"p_lpf_resonance": {
"type": "number"
},
"p_pha_offset": {
"type": "number"
},
"p_pha_ramp": {
"type": "number"
},
"p_repeat_speed": {
"type": "number"
},
"p_vib_speed": {
"type": "number"
},
"p_vib_strength": {
"type": "number"
},
"sample_rate": {
"type": "integer"
},
"sample_size": {
"enum": [
8,
16
],
"type": "integer"
},
"sound_vol": {
"type": "number"
},
"wave_type": {
"enum": [
0,
1,
2,
3
],
"type": "integer"
}
},
"type": "object"
},
"preset": {
"type": "string"
},
"related": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"sampleCount": {
"type": "integer"
},
"sampleRate": {
"type": "integer"
},
"seed": {
"type": "integer"
},
"wav_base64": {
"type": "string"
}
},
"required": [
"seed",
"wav_base64",
"params"
],
"type": "object"
}
},
"routeTemplate": "https://x402.professorsausages.com/sfx/mutate",
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"properties": {
"amount": {
"description": "Mutation magnitude.",
"type": "string"
},
"bits": {
"description": "Bit depth. Overrides the format profile; the override is echoed in formatOverride.",
"enum": [
"8",
"16"
],
"type": "string"
},
"format": {
"description": "Fidelity profile: wav is 44.1k/16, wav8 is 44.1k/8, retro is 22k/8. Explicit bits/sampleRate override it.",
"enum": [
"wav",
"wav8",
"retro"
],
"type": "string"
},
"preset": {
"description": "Base preset. Omit for a random base.",
"type": "string"
},
"sampleRate": {
"description": "Sample rate in Hz. Overrides the format profile; the override is echoed in formatOverride.",
"enum": [
"11025",
"22050",
"44100"
],
"type": "string"
},
"seed": {
"description": "Integer seed of the base sound. Omit for a random seed.",
"type": "string"
}
},
"type": "object"
}
},
"type": "object"
},
"output": {
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"help": {
"docs": "https://x402.professorsausages.com/sfx",
"example": "https://x402.professorsausages.com/sfx/mutate",
"openapi": "https://x402.professorsausages.com/sfx/openapi.json",
"sample": "https://x402.professorsausages.com/sfx/sample"
}
},
"lastUpdated": "2026-10-21T04:54:30.664Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-21T04:54:30.295Z"
},
"resource": "https://x402.professorsausages.com/sfx/mutate",
"serviceName": "8-bit SFX Generator",
"tags": [
"sfx",
"audio",
"8-bit",
"gamedev",
"synth"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Mutate a known-good seed's sound (classic sfxr mutate) — nearby variations by parameter perturbation"
}What the leaf hashes
{"body":"bc1189487b8616a54b6f3fb1d365214af78bfb547b0647df1a9a66d3c76180a3","id":126760,"kind":"listing","method":"baseline/1","observed_us":1793025637081940,"prev":null,"subject":"x402_bazaar:https://x402.professorsausages.com/sfx/mutate","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x1fa726e4c3f242c38cbe2d9be421933d5ab5668dbbf6079fcff631d42c342f51
- 0xf0da8b90845f7f7c6fe754dcea633585e33ee48df49458512a74f0b80daa7201
- 0x8c36120d5d300f41b8553305181033781265bbb30156405c2ddccbb78957453c
- 0x3176b471aecdd01110a53a6e3a75ef7b3e3e42e2430bdd78e7f4f49e6f3e3ef1
- 0x18409bd8ba4e8c332870af524f33c94b47004dae72ac5dc69da0ee181660eab2
- 0xfd92b500d63c1a5f148440cb9ad8086cf45272be16ad7c4031a2a3d8a74461a7
- 0xb5b166b239d1a168526ac1bf05ce84467c28d02f5f31766fa0330b810da3fba4
- 0xcc77de93a0f1b5d6e0c2fac22cfe4c24c9a41e9e0f4295ebc3b82bc07875c955
- 0xd3d7e0dc8b69b8657e67a0f1d5839145570b9c300df6cafd342c2ab22a537d6c
- 0x95d4f13dc77f1ba3eb78d20352c758152498641438c50e44cef664ea99f9747c
- 0xbfd7c325ad90588d62856113d1c0ad99de5d67958ff0f672c892809fd668fffe
- 0xbd94b9d1458901cf513783d5d2bc701e3babbcdf9219e07ee2be8fb2c897060f
- 0x42b0d9d5b53af5b0fe99cee10ce29fe484db78b92ce49f97190cc6d098651d47
- 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
- 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
- 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae