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Derive Ethereum Address from Public Key
x402
Derive Ethereum Address from Public Key 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).
Converts a secp256k1 public key (hex) into its corresponding Ethereum address via the UnyKorn/Genesis402 operator network.
Price / call$0.002
Success—
StatusUnknown
How this service works
Derive an Ethereum address from a public key — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok:true, the derived Ethereum address or relevant output, a receipt object containing a transaction hash, USD amount paid, and a unique receipt ID, plus a generated_at ISO8601 timestamp confirming when the derivation was performed.
Example use cases
Wallet address recovery from key pair
“I have a raw secp256k1 public key — 0x04a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2 — what Ethereum address does it map to?”
Verify key-to-address derivation in wallet tooling
“Can you confirm that the Ethereum address derived from public key 0x04deadbeefcafe0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef01 is correct?”
On-chain identity setup from hardware key
“I exported the public key from my hardware security module as hex — 0x04f1e2d3c4b5a6978869504132231415f6e7d8c9baab9c8d7e6f5a4b3c2d1e0f1e2d3c4b5a69788695041322314 — what Ethereum address should I fund for it?”
Technical details
Endpoint
POSThttps://twin.unykorn.org/eth-address-from-pubkey?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a trustless, pay-per-call derivation of an Ethereum address from a raw public key without running local cryptographic libraries. Especially useful in agent workflows that lack native secp256k1/keccak256 support, or when auditability via on-chain receipts is required.
Side effects
- Invalid or malformed public key (not 0x-prefixed or wrong length) returns an error
- Payment failure via x402 protocol results in 402 response before computation
- Network or operator node unavailability returns a service error
- Public key that doesn't lie on secp256k1 curve may return a cryptographic error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "eth-address-from-pubkey",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.002,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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