GUID / UUID v4 is the most widely used GUID / UUID version and is designed to be generated from randomness or a cryptographically secure pseudorandom generator.

GUID / UUID v4 is the most widely used GUID / UUID version and is designed to be generated from randomness or a cryptographically secure pseudorandom generator. It requires no coordination, no central authority, no clock synchronization and no device identifiers. Making it ideal for distributed systems, APIs, databases and general-purpose unique identifiers.