← The evidence ledger
Evidence row 2201823
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://uk-open-data.x402tookit.com/outcode-lookup
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 411c8a69986433936bfddc2c511bf77288bf31b52be0bc90be58f396124139f4
- Leaf
- 0x44aafa54543ad06ebc7d07e297ef0f57d3af088ab09ca8def024a70b78230d49
What was observed
{
"endpoints": [
[
"x402",
"https://uk-open-data.x402tookit.com/outcode-lookup"
]
],
"name": "UK Open Data",
"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": "Look up a UK outcode (e.g. EC1A, SW1A, M1): centre coordinates, districts, wards, parishes and constituencies it covers.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"outcode": "EC1A"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T00:43:59.597Z",
"constituencies": [
"Cities of London and Westminster",
"Islington South and Finsbury"
],
"counties": [],
"countries": [
"England"
],
"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.",
"districts": [
"City of London",
"Islington"
],
"lat": 51.52053306060618,
"lon": -0.10417533333333336,
"notChecked": [
"the boundary of the outcode area (only a centre point and the names of areas it touches are given)"
],
"outcode": "EC1A",
"parishes": [
"City of London, unparished area",
"Islington, unparished area"
],
"reasons": [],
"source": "postcodes.io (ONS / Ordnance Survey open data)",
"sourceUrl": "https://postcodes.io",
"summary": "EC1A is centred at 51.5205, -0.1042 and touches City of London, Islington.",
"verdict": "FOUND",
"wards": [
"Aldersgate",
"Bunhill",
"…4 more"
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"outcode": {
"description": "Outward code, e.g. EC1A, W1A, M1, B33, CR2, DN55",
"type": "string"
}
},
"required": [
"outcode"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"constituencies": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"counties": {
"type": [
"array",
"null"
]
},
"countries": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"districts": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"lat": {
"type": [
"null",
"number"
]
},
"lon": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"outcode": {
"type": [
"null",
"string"
]
},
"parishes": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"sourceUrl": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"wards": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:24:20.856Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T23:24:20.685Z"
},
"resource": "https://uk-open-data.x402tookit.com/outcode-lookup",
"serviceName": "UK Open Data",
"tags": [
"uk",
"outcode",
"postcode-district",
"postcodes-io"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Look up a UK outcode (e.g. EC1A, SW1A, M1): centre coordinates, districts, wards, parishes and constituencies it covers."
}What the leaf hashes
{"body":"411c8a69986433936bfddc2c511bf77288bf31b52be0bc90be58f396124139f4","id":2201823,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646809034026,"prev":null,"subject":"x402_bazaar:https://uk-open-data.x402tookit.com/outcode-lookup","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).
- 0x44ab22cbe5373e777c97a6f713939cd1f1c1d2ebb91fa463a7d20a5a2b7f1b94
- 0x95289dc1452a8891034563fd78cda93f3c0115b084eccb9ec50d0eac6c1a22f9
- 0x55cd7d633031a789932254ddfe8dab6b7258ce8324c841b5cedeffa55e871774
- 0x1bdadac7ae823d4f1a854832ba96a8a53d243db30e63e8f39ffaa3cf1b881e14
- 0x94a8254b68d5f1ea434a81686eff3cc5b853e32e0a30dfa48cf636872cebcde3
- 0xad98394c2dd56bf6ff8d68021c619d0bee752ac1065046b0a41d9b9ec01985af
- 0x111b3b8d05b1dafe026c37d08b33d6bb996df1a5e18962366705696ae2da2438
- 0x8ee7c6f4d896664ebe35d7fb226ab25b18d4d460f122e8906197fc7628c8cadc
- 0x3e5946fb5f8ce9fa4e73cfc75bcda7c60918a1a781e3fe2474621b49fd5284dc
- 0x74eec6890666dca5773eca0fee354576562bac7e5e54a24138a386f770dc4531
- 0x9b52af3861e436015165f4843e485a2a987ca3915ca3ea656173b5eeabc01ea9
- 0xbc7027b08c105107379103e4bb6da46cb151f2ad9354e23245ef7a2991eacef7
- 0x95a273bb8932dab7d9961e32e3d3be866bd51e98c7772b268db2595e5869b5c4
- 0x75634d9d67fe6c75f98d15ecdced550aaaa0b303b51c1355fcc39f82416bc504
- 0x3217f821997a6d778dcf0814a25b1296c55ab77710c675e7b15695d25a6ce67d
- 0x8760c227928c5295506cd8606e763f86cf8cd2a549820fab4dc86d29ca0d816d
- 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af