export declare class CidHexConverterService {
    /**
     * Convert Ethereum hex hash to CID v1 with raw codec
     * @param hexHash - Ethereum-style hex string (with or without 0x prefix)
     * @returns CID v1 string in base32 encoding
     */
    hexToCid(hexHash: string): string;
    /**
     * Convert CID v1 to Ethereum hex hash
     * @param cidString - CID v1 string
     * @returns Ethereum-style hex string with 0x prefix
     */
    cidToHex(cidString: string): string;
    /**
     * Validate that a CID uses the expected format
     * @param cidString - CID string to validate
     * @returns Validation result with error message if invalid
     */
    validateCidFormat(cidString: string): {
        valid: boolean;
        error?: string;
    };
    /**
     * Validate hex hash format
     * @param hexHash - Hex string to validate
     * @returns Validation result with error message if invalid
     */
    validateHexFormat(hexHash: string): {
        valid: boolean;
        error?: string;
    };
}
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