export declare const _apiFallbacks: {
    fetchUTXO: (testnet: boolean, txHash: string, vOut: number) => (() => Promise<import("../utils/utxo").UTXO>)[];
    fetchUTXOs: (testnet: boolean, address: string, confirmations: number, scriptHash?: string | undefined) => (() => Promise<readonly import("../utils/utxo").UTXO[]>)[];
    fetchTXs: (testnet: boolean, address: string, confirmations?: number) => ((() => Promise<readonly import("../utils/utxo").UTXO[]>) | (() => Promise<readonly import("../utils/utxo").UTXO[]>) | (() => Promise<import("../utils/utxo").UTXO[]>) | (() => Promise<readonly import("../utils/utxo").UTXO[]>))[];
    broadcastTransaction: (testnet: boolean, hex: string) => ((() => Promise<string>) | undefined)[];
};