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Base58Check String Verifier
x402
Base58Check String Verifier is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).
Verifies a base58check-encoded string and extracts its version byte
Price / call$0.002
Success—
StatusUnknown
How this service works
Verify a base58check string and split out its version byte — Genesis402 / UnyKorn Operator Network
Output
A JSON object indicating whether the base58check string is valid (ok: true/false), the extracted version byte, the type identifier ('base58check-verify'), and a payment receipt with transaction hash, USD amount, and receipt ID.
Example use cases
Bitcoin address format validation
“I need to check if this Bitcoin address is properly formatted and has a valid checksum — can you verify '1BoatSLRHtKNngkdXEeobR76b53LETtpyT' and tell me its version byte?”
WIF private key format check
“Before I try to import this private key, can you validate that this base58check string is correctly encoded and show me its version byte: '5HueCGU8rMjxECyDialwujzvqD6NMivnJHoGPNPPCbPF7G7T4q1'?”
Multisig P2SH address verification
“I have a P2SH address '3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy' — can you verify it's a valid base58check string and extract its version byte so I can confirm it's the right address type?”
Technical details
Endpoint
POSThttps://twin.unykorn.org/base58check-verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to cryptographically verify that a base58check-encoded string (such as a Bitcoin address, WIF key, or other base58check payload) has a valid checksum and to extract its version byte. Prefer this over manual decoding when you need a reliable, programmatic check without implementing the checksum algorithm yourself.
Side effects
- Invalid or malformed base58check string returns ok: false
- Non-base58 characters in input cause validation failure
- Checksum mismatch results in verification failure
- Missing or empty data parameter causes request error
- Payment failure (insufficient USDC balance) blocks the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "base58check-verify",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.002,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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