export interface BitcoinOutpoint {
    txid: string;
    vout: number;
}
export declare function parseOutpoint(outpoint: string): BitcoinOutpoint;
export declare function estimateBuyPsbtFeeSats(params: {
    feeRate: number;
    buyerInputCount: number;
    sellerInputVbytes: number;
    outputCount: number;
}): number;
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