import { Hash } from '@dedot/codecs';
import { SignerPayloadJSON } from '@dedot/types';
import { SignedExtension } from '../SignedExtension.js';
/**
 * @description Genesis hash check to provide replay protection between different networks.
 */
export declare class CheckGenesis extends SignedExtension<{}, Hash> {
    init(): Promise<void>;
    fromPayload(payload: SignerPayloadJSON): Promise<void>;
    toPayload(): Partial<SignerPayloadJSON>;
}