Re-canonicalizes a payload and compares recomputed hash/HMAC against provided va
Re-canonicalizes a payload and compares recomputed hash/HMAC against provided values to detect tampering
Answeringour last check, 2026-10-10
1 of 1checks answered this week
371 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.ibancheck.co.uk/api/verify-signature
| Category | Everything else |
|---|---|
| Provider host | api.ibancheck.co.uk |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.003 | 371 ms |
Example input (from the provider)
{
"body": {
"hmacSignature": "<hmacSignature from sign-transaction>",
"payload": {
"amount": 150,
"orderId": "A-1001"
},
"sha256": "<sha256 from sign-transaction>",
"timestampMs": 1791301906606
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"hmacSignature": {
"type": "string"
},
"maxAgeSeconds": {
"type": "number"
},
"merkleLeaf": {
"type": "string"
},
"payload": {
"type": "object"
},
"sha256": {
"type": "string"
},
"timestampMs": {
"type": "number"
}
},
"required": [
"payload"
]
},
"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"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}