Modern versions (since 17.x) include online validation. If the software phones home and finds an invalid or blacklisted code, it may revert to trial mode or display an alert.
I understand you're looking for an article about "WinHex registration code," but I need to be careful here. WinHex is a commercial hexadecimal editor and disk editing tool produced by X-Ways Software Technology AG. It is — it requires a paid license for legal use. winhex registration code
Have you used WinHex legally? Share your experience with licensing or alternatives in the comments below (if applicable to your platform). Modern versions (since 17
However, you can still use it to binary data, explore disk structures, and learn the interface — completely free and safe. explore disk structures