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Generates a deterministic HTLC preimage from a transfer ID using the wallet’s keys.

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Method Signature

async getHTLCPreimage(transferID: string): Promise<Uint8Array>

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Parameters

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transferID
string
required
The transfer ID to generate a preimage for

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Returns

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preimage
Uint8Array
required
The 32-byte preimage

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Example

const preimage = await wallet.getHTLCPreimage("transfer-id");
console.log("Preimage:", bytesToHex(preimage));