export type ContentProtocol = 'ipfs' | 'ipns' | 'bzz' | 'onion' | 'onion3';
export type Codec = 'ipfs-ns' | 'ipns-ns' | 'swarm-ns' | 'onion' | 'onion3';
export interface Content {
    protocol: ContentProtocol | null;
    data: string;
}
/**
 * Decode content hash value to readable format
 * @param encoded
 */
export declare function decode(encoded: string): string;
/**
 * Encode content to hash value to store on chain
 * @param text
 */
export declare function encode(text: string): string | null;
export declare function isValid(encoded: string): boolean;