import { SubmittableExtrinsic } from '@polkadot/api/promise/types';
/**
 * Send tx to Crust Network
 * @param {SubmittableExtrinsic} tx substrate-style tx
 * @param {string} seeds tx already been sent
 */
export declare function sendTx(tx: SubmittableExtrinsic, seeds: string): Promise<boolean>;