Dekryptos is a Web Application dedicated to decoding the last portion of the Kryptos sculpture. Known as K4, the last 97 characters has remained elusive for over 35 years to those who have tried.

Kryptos CTF by Paradign.xyz are 10 Kryptos inspired ciphers. Although these challenges are mostly complete, you can still play around and try to complete for yourself. Paradigm Kryptos CTF is not affiliated with dekryptos.com.