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Api Endpoint

Busker Signature Verifier

Verify EVM signatures offline: EIP-191 personal messages, EIP-712 typed data, and x402/EIP-3009 payment authorizations (paste a raw Payment-Signature header) — recovers the signing wallet, checks it against an expected address, and reports the authorization's amount, payee and validity window. No chain reads.

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Offering

Provider
workbot1.oddsys.org
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Creative
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://workbot1.oddsys.org/verify-sig
MIME type
Not provided
First seen
2026-10-16T01:51:30.109Z
Last seen
Tags
signature, eip191, eip712, eip3009, X402

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.002 USDC
Atomic price: 2000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0x15459498e1191d8787c83177809bd54022fA18c4"
  }
]

Observed health

Status
Healthy
Latest latency
64 ms
Average latency
70 ms
HTTP status
204
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "description": "Exactly one of: message (EIP-191), typedData (EIP-712), authorization (EIP-3009 / x402 exact-EVM), paymentHeader (raw base64 Payment-Signature or X-Payment header). signature is required except with paymentHeader.",
      "properties": {
        "address": {
          "description": "Expected signer; when given the response carries a matches boolean.",
          "type": "string"
        },
        "authorization": {
          "description": "EIP-3009 TransferWithAuthorization fields { from, to, value, validAfter, validBefore, nonce } (the x402 payload.authorization object).",
          "type": "object"
        },
        "domain": {
          "description": "Explicit EIP-712 domain { name, version, chainId, verifyingContract } for a non-USDC token.",
          "type": "object"
        },
        "message": {
          "description": "Plain message that was signed with personal_sign (EIP-191).",
          "type": "string"
        },
        "network": {
          "description": "CAIP-2 network for authorization mode (default eip155:8453 = USDC on Base).",
          "type": "string"
        },
        "paymentHeader": {
          "description": "Raw base64 value of an x402 Payment-Signature / X-Payment header; decoded and verified in one step.",
          "type": "string"
        },
        "signature": {
          "description": "0x-prefixed 65-byte signature.",
          "type": "string"
        },
        "typedData": {
          "description": "EIP-712 payload { domain, types, primaryType, message } exactly as signed.",
          "type": "object"
        }
      },
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "description": "Exactly one of: message (EIP-191), typedData (EIP-712), authorization (EIP-3009 / x402 exact-EVM), paymentHeader (raw base64 Payment-Signature or X-Payment header). signature is required except with paymentHeader.",
          "properties": {
            "address": {
              "description": "Expected signer; when given the response carries a matches boolean.",
              "type": "string"
            },
            "authorization": {
              "description": "EIP-3009 TransferWithAuthorization fields { from, to, value, validAfter, validBefore, nonce } (the x402 payload.authorization object).",
              "type": "object"
            },
            "domain": {
              "description": "Explicit EIP-712 domain { name, version, chainId, verifyingContract } for a non-USDC token.",
              "type": "object"
            },
            "message": {
              "description": "Plain message that was signed with personal_sign (EIP-191).",
              "type": "string"
            },
            "network": {
              "description": "CAIP-2 network for authorization mode (default eip155:8453 = USDC on Base).",
              "type": "string"
            },
            "paymentHeader": {
              "description": "Raw base64 value of an x402 Payment-Signature / X-Payment header; decoded and verified in one step.",
              "type": "string"
            },
            "signature": {
              "description": "0x-prefixed 65-byte signature.",
              "type": "string"
            },
            "typedData": {
              "description": "EIP-712 payload { domain, types, primaryType, message } exactly as signed.",
              "type": "object"
            }
          },
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    }
  }
}