When artist Jim Sanborn created Kryptos, a 10-foot-tall sculpture at CIA headquarters, he intended to challenge the world of spies and cryptographers. The sculpture showcases four encrypted messages, with the first three cracked soon after its installation in 1990, leaving the fourth, K4, as an enigma that has fascinated code enthusiasts for over three decades. As Sanborn approaches his auction of solutions to K4, excitement builds in the cryptography community, with bids currently exceeding $200,000. The auction includes vital materials needed to solve K4 and has sparked debates over the morality of revealing the secrets behind such an iconic work of art, whether it's a codebreaker’s win or an artist’s regret.