Verify an Ethereum personal_sign message
Verify an Ethereum personal_sign message: recover the signer from a 65-byte signature and check it against an address. Computed locally, no node needed.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
530 msmedian answer time
$0.01listed price per call
$0.01price 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
GET https://saylorinnovations.com/api/chain/verify-signature
| Category | Market data |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| 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 |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.01 | 530 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
"message": "Sign in to saylorinnovations.com",
"signature": "0x170226baa64118ebe14291a196886847b4c2d69e7c4276c3d99bdeeb0787bcc5778c38e262cf6a0d3f43d4b929b4499525f12a1d72b6de022010f7fef04b5e461b"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "the address that should have signed",
"type": "string"
},
"message": {
"description": "the exact message text that was signed",
"type": "string"
},
"signature": {
"description": "the 65-byte signature as 0x hex",
"type": "string"
}
},
"required": [
"address",
"message",
"signature"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"description": "address expected to have signed, checksummed",
"type": "string"
},
"message_length": {
"description": "characters in the message",
"type": "number"
},
"note": {
"description": "plain-language reading of the result",
"type": "string"
},
"recovered_address": {
"description": "address recovered from the signature",
"type": [
"string",
"null"
]
},
"signature_valid": {
"description": "true when the signer matches the address",
"type": "boolean"
},
"source": {
"description": "where the data was read from or how it was computed",
"type": "string"
},
"standard": {
"description": "signing standard checked",
"type": "string"
}
},
"required": [
"address",
"message_length",
"standard",
"signature_valid",
"note",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}