import { SignTxParams } from '@okxweb3/coin-base';
import { BtcWallet } from './BtcWallet';
import * as bitcoin from '../index';
export declare class UsdtWallet extends BtcWallet {
    signTransaction(param: SignTxParams): Promise<any>;
    estimateFee(param: SignTxParams): Promise<number>;
    getHardWareRawTransaction(param: SignTxParams): Promise<any>;
}
export declare class UsdtTestWallet extends UsdtWallet {
    network(): bitcoin.networks.Network;
}