In many scientific fields, time series data is essen- tial, yet maintaining the integrity and legitimacy of such data is still difficult. Traditional watermarking techniques have mainly been used for multimedia. Although approaches for watermarking non-media data have been developed recently, there is still a big gap in the development of reliable and undetectable watermarking methods for time series diffusion models. We suggest a novel modification of the tree ring watermarking method for the 2D time series model LDCast, which is intended for precipitation prediction.
Through the incorporation of watermarks into the model’s process, we guarantee resilience and undetectability. Our approach preserves the LDCast model’s predicted accuracy while still being able to verifying the origins of the data. We confirm the efficacy of our method through comprehensive evaluation, underscoring its potential to improve the se- curity and integrity of time series forecasting models.