import { Bitcoind } from '../../types';
type PreciousBlockParams = {
    bitcoind: Bitcoind;
    blockhash: string;
};
/**
 * preciousblock "blockhash"
 *
 * Treats a block as if it were received before others with the same work.
 * A later preciousblock call can override the effect of an earlier one.
 * The effects of preciousblock are not retained across restarts.
 *
 */
export declare function preciousBlock(params: PreciousBlockParams): Promise<any>;
export {};