import { Bitcoind } from '../../types';
type SignMessageParams = {
    bitcoind: Bitcoind;
    address: string;
    message: string;
};
/**
 * signmessage "address" "message"
 *
 * Sign a message with the private key of an address
 * Requires wallet passphrase to be set with walletpassphrase call if wallet is encrypted.
 *
 */
export declare function signMessage(params: SignMessageParams): Promise<any>;
export {};