Checks a detached OpenPGP signature against the bytes it claims to cover, using
Checks a detached OpenPGP signature against the bytes it claims to cover, using the pinned GnuPG build and nothing else. What comes back is the verdict in GnuPG's own terms, the fingerprint that actually signed, the signature timestamp, the algorithms used, and whether the key is expired or revoked. A wrong key, a tampered byte or a signature made by someone else each produce a distinct verdict rather than a bare false.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
1273 msmedian answer time
$0.002listed price per call
$0.002price 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://sicher.halowerk.com/v1/oss-gnupg-detached-signature-verify
| Category | Everything else |
|---|---|
| Provider host | sicher.halowerk.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.002 | 1273 ms |
Example input (from the provider)
{
"body": {
"public_key_armored": "-----BEGIN PGP PUBLIC KEY BLOCK-----\n\nmDMEaq1/cxYJKwYBBAHaRw8BAQdA1SVc3kWNOahbtF7NG/+r3J0FRi3eZttjwG4V\n3Q+87Ba0NUhBTE9XRVJLIFBydWVmdm9ybGFnZSA8cHJ1ZWZ2b3JsYWdlQGhhbG93\nZXJrLmV4YW1wbGU+iJMEExYKADsWIQRyU28SJU2LbSX4iJvvVEGQ4+pdywUCaq1/\ncwIbAwULCQgHAgIiAgYVCgkICwIEFgIDAQIeBwIXgAAKCRDvVEGQ4+pdy8MhAP9C\n8lCNPBS2EypohGv9TbqIt4muUHRgIqo2cbtoZCCH9QEAqUm1AMxHV1JtTTtuAN3H\nYBALXlpBeOwMfL3g7jCvSQk=\n=aSES\n-----END PGP PUBLIC KEY BLOCK-----\n",
"signature_armored": "-----BEGIN PGP SIGNATURE-----\n\niHUEABYKAB0WIQRyU28SJU2LbSX4iJvvVEGQ4+pdywUCaq1/cwAKCRDvVEGQ4+pd\ny/YLAQCcqZZLOV9guftS3z3AbKMfQ0fXNk69IaUk1/4XBBC8UAEAwXgKUJ501uNr\nw2AtQSLYn1PZ6F0pN3/LV27xaKoPkAs=\n=w0mv\n-----END PGP SIGNATURE-----\n",
"signed_data_base64": "UHJ1ZWZ2b3JsYWdlIGZ1ZXIgZGVuIERpZW5zdCBvc3MtZ251cGctZGV0YWNoZWQtc2lnbmF0dXJlLXZlcmlmeS4KVW1sYXV0ZTogR3J1ZcOfZSwgTWHDnywgRnXDny4K"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"public_key_armored": {
"maxLength": 262144,
"minLength": 1,
"type": "string"
},
"signature_armored": {
"maxLength": 262144,
"minLength": 1,
"type": "string"
},
"signed_data_base64": {
"maxLength": 349528,
"minLength": 1,
"type": "string"
}
},
"required": [
"public_key_armored",
"signature_armored",
"signed_data_base64"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}