import { BaseBlockchain } from './base-blockchain.js';
import { type AddressCallback, type TransactionCallback } from './types.js';
import { BlockchainElectrum } from './blockchain-electrum.js';
import { BlockchainLocal } from './blockchain-local.js';
import { Transaction } from '@xocash/primitives';
/**
 * The idea here is that this will implement the IBlockchain interface.
 * But, it will allow the dev to specify multiple child IBlockchain interfaces for configuration.
 * So, if the network is not available, it can fallback to the local and sync later.
 *
 * @example
 * ```ts
 * // Actual interface will be more complex, but this is the rough idea.
 * const blockchain = new Blockchain([
 *   new BlockchainLocal(...),
 *   new BlockchainElectrum(...)
 * ])
 * ```
 */
export declare class Blockchain extends BaseBlockchain {
    blockchainLocal: BlockchainLocal;
    blockchainElectrum: BlockchainElectrum;
    constructor();
    start(): Promise<void>;
    stop(): Promise<void>;
    fetchUnspents(address: string): Promise<import("@xocash/primitives").ExtMap<import("./types.js").BlockchainUTXO>>;
    fetchTransaction(txHash: string): Promise<Transaction>;
    fetchTransactions(address: string): Promise<import("@xocash/primitives").ExtMap<import("./types.js").BlockchainTransaction>>;
    broadcastTransaction(tx: Uint8Array | Transaction | string): Promise<void>;
    subscribeAddress(_address: string, _callback: AddressCallback): Promise<void>;
    unsubscribeAddress(_address: string, _callback: AddressCallback): Promise<void>;
    subscribeTransaction(_transactionHash: string, _callback: TransactionCallback): Promise<void>;
    unsubscribeTransaction(_transactionHash: string, _callback: TransactionCallback): Promise<void>;
}