: A simple and robust PHP class used specifically for generating product license keys and serial numbers.

(Keygen.sh)This repository demonstrates how to build a server that performs creation, activation, and validation. It is particularly useful for learning how to use machine fingerprints to prevent license sharing.

A robust licensing system typically involves three main elements: Creating unique, often encrypted, strings.

A "hot" system must not degrade UX. Benchmarks of the three repositories above on a standard VPS (2 vCPU, 4GB RAM):

This is the script you host on your own server. Its job is to: