← The evidence ledger
Evidence row 117304
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://music.openverbs.com/v1/interval
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 7e42f4b66a336aacf0daaa14227262daa01230cc970c6ea069d42c6350cea6ff
- Leaf
- 0xf1513168576757bc528288fd563dc67648ae209eb169ed4dcd98358016638246
What was observed
{
"endpoints": [
[
"x402",
"https://music.openverbs.com/v1/interval"
]
],
"name": "Interval between notes",
"owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
"scheme": "exact"
}
],
"description": "Name the interval between two notes (`to` at or above `from`) — its size in semitones, its diatonic number and its quality (perfect/major/minor/augmented/diminished). Correct spelling matters: C→F# is an augmented fourth, C→Gb a diminished fifth.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"from": "C4",
"to": "G4"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"from": {
"description": "Lower note.",
"maxLength": 8,
"minLength": 1,
"type": "string"
},
"to": {
"description": "Upper note (>= from).",
"maxLength": 8,
"minLength": 1,
"type": "string"
}
},
"required": [
"from",
"to"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-08T05:39:54.13Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-08T05:39:53.99Z"
},
"resource": "https://music.openverbs.com/v1/interval",
"serviceName": "Interval between notes",
"tags": [
"music interval calculator",
"interval between notes",
"name musical interval",
"semitone interval lookup",
"diatonic interval api"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Name the interval between two notes (`to` at or above `from`) — its size in semitones, its diatonic number and its quality (perfect/major/minor/augmented/diminished). Correct spelling matters: C→F# is an augmented fourth, C→Gb a diminished fifth."
}What the leaf hashes
{"body":"7e42f4b66a336aacf0daaa14227262daa01230cc970c6ea069d42c6350cea6ff","id":117304,"kind":"listing","method":"baseline/1","observed_us":1793025610981103,"prev":null,"subject":"x402_bazaar:https://music.openverbs.com/v1/interval","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).
- 0xf15162dbf943c7493fe7527fc032ef724d7eccd6244ba9659fe1acd648e25ef3
- 0x625d72ff8ccfec9f3ff9ffc1873b5fb9ec1fa52daa2448829dcf1daece4504d7
- 0x8ecde2cf77806b55b23312da15b9297c2d90dffcfdbc769332c087217aaadcad
- 0x00b7bcf4572ddc7d1ad9c86ac96016dda6716c115d015421cc931f82bd5cf9d8
- 0xe320e1da79f15cffd25e78ef458f1e634884daa67e98966449a9d8215b1f8ca4
- 0x7de6d290ba1dc3304b45d41a530d1f216376331d59adacc0eb9ab80e49fe23ce
- 0x6cc89f398322bf1a7168325ee28892c402f8eb11311156f4135913af0c5c4803
- 0x8fb70d5d53b0b02037c09dcdd2c7c8ce7c9da86d4d25675e03fca63df899abfb
- 0x46613c0a42d561a7a07ec88601367eb9190899add6946bf0d246502a841548b6
- 0x1374d43b83adaf6956b75a4ffa6be9b5d88f279b0e1f9aa9cb997253f28541e1
- 0x3fbb508bb3373d829808c4b964e49bf52f1a8877acba747d2b92b5eac81e6259
- 0x4d2e94451b5ffc570a23dee9d1525bc305f1009994ffe23d8e2e7d45c60f6209
- 0xa26f0437cba4d7d64f1cf98bf4f490e1ebb6f66a5e2331537b7ba8b3061084e0
- 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
- 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
- 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
- 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae