/**
 * Utility functions for creating and handling CKBFS witnesses
 */
/**
 * V3 witness structure for backlinks and content chaining
 */
export interface CKBFSV3WitnessOptions {
    previousTxHash?: string;
    previousWitnessIndex?: number;
    previousChecksum?: number;
    nextIndex?: number;
    content: Uint8Array;
}
/**
 * Creates a CKBFS witness with content
 * @param content The content to include in the witness
 * @param version Optional version byte (default is 0)
 * @returns Uint8Array containing the witness data
 */
export declare function createCKBFSWitness(content: Uint8Array): Uint8Array;
/**
 * Creates a CKBFS witness with text content
 * @param text The text content to include in the witness
 * @param version Optional version byte (default is 0)
 * @returns Uint8Array containing the witness data
 */
export declare function createTextCKBFSWitness(text: string): Uint8Array;
/**
 * Extracts content from a CKBFS witness
 * @param witness The CKBFS witness data
 * @returns Object containing the extracted version and content bytes
 */
export declare function extractCKBFSWitnessContent(witness: Uint8Array): {
    version: number;
    content: Uint8Array;
};
/**
 * Checks if a witness is a valid CKBFS witness
 * @param witness The witness data to check
 * @returns Boolean indicating whether the witness is a valid CKBFS witness
 */
export declare function isCKBFSWitness(witness: Uint8Array): boolean;
/**
 * Creates a CKBFS v3 witness with structured format
 * @param options Witness options including backlink data and content
 * @returns Uint8Array containing the v3 witness data
 */
export declare function createCKBFSV3Witness(options: CKBFSV3WitnessOptions): Uint8Array;
/**
 * Creates an array of v3 witnesses for chunked content
 * @param contentChunks Array of content chunks
 * @param options Backlink options for head witness and start index
 * @returns Array of Uint8Array witnesses
 */
export declare function createChunkedCKBFSV3Witnesses(contentChunks: Uint8Array[], options?: Omit<CKBFSV3WitnessOptions, 'content' | 'nextIndex'> & {
    startIndex?: number;
}): Uint8Array[];
/**
 * Extracts content from a CKBFS v3 witness
 * @param witness The CKBFS v3 witness data
 * @param isHeadWitness Whether this is the head witness or a continuation witness
 * @returns Object containing the extracted data
 */
export declare function extractCKBFSV3WitnessContent(witness: Uint8Array, isHeadWitness?: boolean): {
    version?: number;
    previousTxHash?: string;
    previousWitnessIndex?: number;
    previousChecksum?: number;
    nextIndex: number;
    content: Uint8Array;
};
/**
 * Checks if a witness is a valid CKBFS v3 witness
 * @param witness The witness data to check
 * @returns Boolean indicating whether the witness is a valid CKBFS v3 witness
 */
export declare function isCKBFSV3Witness(witness: Uint8Array): boolean;
/**
 * Creates an array of witnesses for a CKBFS transaction from content chunks
 * @param contentChunks Array of content chunks
 * @param version Optional version byte (default is 0)
 * @returns Array of Uint8Array witnesses
 */
export declare function createChunkedCKBFSWitnesses(contentChunks: Uint8Array[]): Uint8Array[];