/**
 * HeaderByHashParams type and encoder
 */
/**
 * Request parameters for the header_by_hash RPC method
 * @property {string} hash - The block hash in hexadecimal format (case-insensitive)
 */
export interface HeaderByHashParams {
    readonly hash: string;
}
export interface EncodedHeaderByHashParams {
    readonly hash: string;
}
export declare const HeaderByHashParamsCodec: import("../../../codec").BaseCodec<EncodedHeaderByHashParams>;
export declare function encodeHeaderByHashParams(params: HeaderByHashParams): EncodedHeaderByHashParams;