Log in to the Sonic Cat website (the current developer).
The are not public; they are private keys generated for you upon purchase. Here's the legitimate process for obtaining and using them: luxonix purity serial number and authorization code
: An authorization window will appear automatically. Copy and paste your serial number and authorization code into the designated fields. Log in to the Sonic Cat website (the current developer)
Consider free lightweight ROMplers like Dexed (FM), SQ8L (vintage), or Spitfire LABS — not identical but useful. luxonix purity serial number and authorization code