import * as bitcoin from 'bitcoinjs-lib';
import { BTCNodeInfo, BTCTx } from './types';
export declare class BTCNodeClient {
    private host;
    constructor(host: string);
    loadMerkleProof: (hash: string, height: number) => Promise<any>;
    private _loadMerkleProof;
    loadBlockByHeight: (height: number) => Promise<bitcoin.Block>;
    loadBtcTx: (txHash: string) => Promise<BTCTx>;
    private _loadBlockByHeight;
    loadTxsByAddress: (bech32Address: string) => Promise<any>;
    loadWalletTxList: (bech32Address: string) => Promise<BTCTx[]>;
    loadBasicInfo: () => Promise<BTCNodeInfo>;
    loadFee: () => Promise<number>;
}