Questions about decamark

So I was doing the ace glitch to get to the islands (on an emulator) and I decided to mess around with the decamark from the dots egg and then I decided looking into decamark as a whole and I found that there's a way to identify which decamark you have through a hexadecimal code associated with it but how do I see that? Also decamark freezes my game whenever I open its summary through any means or level it up (rare candy) so is there a way to get a decamark that you can open the summary of without freezing?