Copyright protection remains a significant challenge in the digital age. Watermarking is a digital technology that embeds discrete and unique identifiers in multimedia content, providing an effective way to protect copyright and ensure content ownership. Frequency domain watermarking involves embedding nonintrusive information into digital content, providing strong copyright protection by exploiting the unique properties of frequency components. Existing watermarking techniques often struggle to balance robustness against imperceptibility and computational efficiency. This research paper gives a novel approach that integrates the Discrete Fourier Transform (DFT), Fast Fourier Transform (FFT), discrete cosine transform (DCT) and the discrete Hartley transform (DHT) for robust copyright protection. The proposed method integrates a watermark into the frequency domain of an image or multimedia content, leveraging the strengths of each transform to achieve enhanced robustness against common attacks like compression, noise addition, and geometric distortions. The results show that, when compared to traditional single-transform-based techniques, the hybrid DFT-FFT-DCT-DHT algorithm offers better robustness and imperceptibility.