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Bitcoin nBits to Target and Difficulty Expander
x402
Bitcoin nBits to Target and Difficulty Expander 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).
Expands a Bitcoin block header nBits field into its full 256-bit target hash and corresponding mining difficulty value
Price / call$0.002
Success—
StatusUnknown
How this service works
Expand Bitcoin nBits into a target and difficulty — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok status, the decoded full 256-bit target value and computed mining difficulty derived from the provided nBits compact encoding, plus a payment receipt containing transaction hash, USD amount, and a Genesis402 receipt ID.
Example use cases
Mining pool difficulty verification
“I have a Bitcoin block with nBits set to 0x170f3d80 — can you expand that into the full 256-bit target so I can verify whether our mined block hash is below it?”
Historical block difficulty analysis
“What was the mining difficulty and full target hash for the Bitcoin genesis block? Its nBits value is 0x1d00ffff.”
Blockchain explorer enrichment
“I'm building a block explorer and need to show human-readable difficulty for each block. Can you decode nBits 0x1903a30c into its target and difficulty number?”
Technical details
Endpoint
POSThttps://twin.unykorn.org/btc-bits-to-target?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically decode Bitcoin's compact nBits format into its full target representation and numeric difficulty — particularly useful for building block explorers, mining software, proof-of-work validators, or any tool that needs to interpret raw Bitcoin block header data without implementing the decoding logic yourself.
Side effects
- Invalid or malformed nBits hex string returns an error response
- nBits value outside valid Bitcoin range may produce unexpected results
- Payment failure or insufficient USDC balance prevents the call from completing
- Network timeout from the UnyKorn operator node
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "btc-bits-to-target",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.002,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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