Minecraft wiki entry for 0x10c, associated text: On April 16, 2012, Notch posted an image on the 0x10c website containing a puzzle.[17][18] When decoded, it revealed the word “Montauk”, which was the password to get into another page on the website,[19] which contained 99 codes which could each be redeemed once on the Mojang website to add 0x10c to the user’s Mojang account, which would have allowed them to play it as soon as the game was eventually released.[20] 0x10c remained part of these user’s Mojang accounts until it was eventually removed from the Mojang account system in 2020.