While the exact algorithm is not officially documented, security researchers have successfully reverse-engineered it. The hash is typically a combination of several variables to ensure it is unique to your specific environment:
In self-sovereign identity systems, the user may control which hash commitment they publish to a blockchain. They can rotate or upgrade their hashing method over time without breaking previous proofs. userchoice hash
From a security perspective, the UserChoice hash is a robust defense-in-depth mechanism. It raises the bar for malware attempting to persist or execute via file associations. While the exact algorithm is not officially documented,