UUID v4 generator
A UUID is a 16-byte (128-bit) unique identifier. UUID v4 is unique within the UUID space, meaning that it is guaranteed to be unique across time and space. UUID v4 is generated using a random or pseudo-random number generator. UUID v4 has the following format:xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, where x is any hexadecimal digit and y is one of 8, 9, A, or B. The UUID is generated using a cryptographically strong algorithm such as the RSA_SHA256 algorithm. The UUID can be generated by anyone who has access to the algorithm and the seed value. UUID v4 is not traceable and does not contain any personally identifiable information. UUID v4 can be used to generate a unique identifier for any purpose.