Differential Privacy

Definition ∞ Differential privacy is a rigorous mathematical definition of privacy in data analysis, ensuring that individual data points cannot be identified within a statistical dataset. It works by adding calibrated noise to data before aggregation or release, obscuring individual contributions while preserving overall statistical properties. This technique allows for data utility without compromising the privacy of any single participant. Its application helps protect sensitive user information.
Context ∞ In the realm of blockchain and decentralized applications, differential privacy is gaining traction as a method to enhance data protection for users. It is particularly relevant for applications that collect user data for analytics or service improvement, such as decentralized identity systems or privacy-preserving machine learning on distributed ledgers. News articles may discuss its implementation in new protocols designed to safeguard user data while enabling public analysis.