Verify one Ed25519 signature over up to 8,000 characters of exact UTF-8 receipt
Verify one Ed25519 signature over up to 8,000 characters of exact UTF-8 receipt text using a supplied 32-byte public key. Returns cryptographic validity and message hash. Does not establish issuer identity, trusted time, licensing or the truth of the receipt. No private keys accepted.
Answeringour last check, 2026-10-11
1 of 1checks answered this week
639 msmedian answer time
$0.0125listed price per call
$0.0125price 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://www.mahastrategies.com/api/v1/micro/signed-receipt-verification
| Category | Everything else |
|---|---|
| Provider host | www.mahastrategies.com |
| 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 |
|---|---|---|---|---|
| 2026-10-11 | valid payment request | 402 | $0.0125 | 639 ms |
Example input (from the provider)
{
"body": {
"dataClass": "synthetic",
"encoding": "exact-utf8",
"message": "Synthetic receipt; no transaction asserted.",
"publicKeyBase64": "AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE=",
"signatureBase64": "AgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg=="
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"dataClass": {
"enum": [
"public",
"synthetic"
],
"type": "string"
},
"encoding": {
"enum": [
"exact-utf8"
],
"type": "string"
},
"message": {
"maxLength": 8000,
"minLength": 1,
"type": "string"
},
"publicKeyBase64": {
"maxLength": 44,
"type": "string"
},
"signatureBase64": {
"maxLength": 88,
"type": "string"
}
},
"required": [
"dataClass",
"encoding",
"message",
"publicKeyBase64",
"signatureBase64"
],
"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"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"amountBaseUnits": {
"enum": [
"12500"
],
"type": "string"
},
"boundaries": {
"maxItems": 128,
"minItems": 0,
"type": "array"
},
"inputDigest": {
"maxLength": 71,
"type": "string"
},
"offerId": {
"enum": [
"signed-receipt-verification"
],
"type": "string"
},
"receiptDigest": {
"maxLength": 71,
"type": "string"
},
"result": {
"type": "object"
},
"version": {
"enum": [
"maha-microproducts/0.1"
],
"type": "string"
}
},
"required": [
"version",
"offerId",
"amountBaseUnits",
"inputDigest",
"result",
"boundaries",
"receiptDigest"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}