← The evidence ledger
Evidence row 2202280
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://airlines-reference.x402tookit.com/airline-callsign
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 8b9182351fe5181aa29f483ce0bb5bf1c3bedde0b1ed3e256a1c423d39e80566
- Leaf
- 0x1569eef7b2045e58748e1a475f61a3199a89c95de6902ba5084479577b88c82c
What was observed
{
"endpoints": [
[
"x402",
"https://airlines-reference.x402tookit.com/airline-callsign"
]
],
"name": "Airlines Reference",
"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": "Convert an airline radio callsign (SPEEDBIRD) to its airline, or an airline code or name to its callsign.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"callsign": "SPEEDBIRD"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T05:48:59.651Z",
"attribution": "Airline data: OpenFlights.org, Open Database License 1.0 (attribution and share-alike), static snapshot dated 2017-02-02; includes defunct airlines; route data is old.",
"callsign": "SPEEDBIRD",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"matches": [
{
"active": true,
"alias": null,
"callsign": "SPEEDBIRD",
"country": "United Kingdom",
"iata": "BA",
"icao": "BAW",
"name": "British Airways",
"openflightsId": 1355,
"routesInSnapshot": 549
}
],
"notChecked": [
"whether the airline operates today: this is a 2017 snapshot and the active flag is as of then",
"airlines founded or renamed after the snapshot",
"…2 more"
],
"reasons": [],
"snapshot": "Static snapshot from 2017-02-02: airlines that started, stopped or changed codes since are not reflected.",
"source": "OpenFlights airlines.dat and routes.dat 2017 snapshot (ODbL 1.0), computed locally",
"summary": "Callsign SPEEDBIRD: British Airways (BAW).",
"verdict": "FOUND"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"airline": {
"description": "IATA/ICAO code or name such as BA, BAW, British Airways (give this or callsign)",
"type": "string"
},
"callsign": {
"description": "Telephony callsign such as SPEEDBIRD (give this or airline)",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"attribution": {
"type": [
"null",
"string"
]
},
"callsign": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"matches": {
"items": {
"properties": {
"active": {
"type": [
"boolean",
"null"
]
},
"alias": {},
"callsign": {
"type": [
"null",
"string"
]
},
"country": {
"type": [
"null",
"string"
]
},
"iata": {
"type": [
"null",
"string"
]
},
"icao": {
"type": [
"null",
"string"
]
},
"name": {
"type": [
"null",
"string"
]
},
"openflightsId": {
"type": [
"null",
"number"
]
},
"routesInSnapshot": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"type": [
"array",
"null"
]
},
"snapshot": {
"type": [
"null",
"string"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:35:42.389Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T22:35:42.078Z"
},
"resource": "https://airlines-reference.x402tookit.com/airline-callsign",
"serviceName": "Airlines Reference",
"tags": [
"airlines",
"callsign",
"icao",
"aviation"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Convert an airline radio callsign (SPEEDBIRD) to its airline, or an airline code or name to its callsign."
}What the leaf hashes
{"body":"8b9182351fe5181aa29f483ce0bb5bf1c3bedde0b1ed3e256a1c423d39e80566","id":2202280,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646814870425,"prev":null,"subject":"x402_bazaar:https://airlines-reference.x402tookit.com/airline-callsign","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
- 0x1569eb75517bbf5eb0dd3e1adb12a57bd4145879cb30f812239c8d687e0c8d2f
- 0xa55e3a1d83ad029d8a4c3ef016bb22c2053b8378d89333dec2476ff96b3e26c4
- 0xc6941150e13e44174bb02e819e8ad87a9855bdd4a9552bbd082c620a24085dc9
- 0xc5bf26c8ed5513784e9b022c187db56f522b060566da6b2272abe4a67f62af74
- 0x3c4e331f449660145928d47ff6c9fe95d8ec93408964aa47d90be99305071243
- 0x6c19221dd5bc4206b07fe544763c5a9a30800dc5e1932217c20da81ee1624298
- 0x442ab729fa3e42cd7b647494721b50ce7a6fa048e0fdcbc8021bbf31d1c1a4dc
- 0xd158f2296fabb7af1a7dfbc3f5ba80cb483d86675f95b9a26347b2c6f14a0014
- 0x77e54071f96d7e5517bbb1f8d59f96a19427ff1e3377169989ed90554cd2720e
- 0x84b052500c69ab3497c367671b8d84864e6a7a2a6729b5a8979b6aeda0b2dd4d
- 0x5d8af36f8dd85806f8fe29f3e7fad48a8ca2fe71ec7570597adea823eeee2183
- 0x694772bd88c608c978c07a5b88c13f219f0e5b849a0c034e7cf4e9550d4e78c9
- 0xac2edb456c581283e2c60a03e146bbba52ffbe8a277ea7e858384f30bbc24d54
- 0xd35a6b56332d7bee4b13ce3efea77dd0a6863016f58691fb78e2e2faf7ab8e87
- 0xb6470417fdb2a0e3de9c1abb1722cbc88bc0dfb5afda0a77e1eac26ab1683ece
- 0xac40f077ca4be8c3432a67771725cc315e8101fc2649999cfad2c900a7640e27
- 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af