import { BroadcastTxParams } from './types/common';
/**
 * Broadcasts a transaction to the blockchain network.
 *
 * @see https://developer.bitcoin.org/reference/rpc/sendrawtransaction.html
 * @param {BroadcastTxParams} params Parameters for broadcasting the transaction.
 * @returns {Promise<string>} The transaction ID if successful.
 */
export declare const broadcastTx: ({ txHex, auth, nodeUrl }: BroadcastTxParams) => Promise<string>;