I don't get it.  So people are to trust this 3rd party with what could amount to a 6, 7 or even 8 figure amount of physical coins they own.  I don't know if I'd be able to sleep at night not knowing if they were safe.  Don't get me wrong I'm not implying anything I just don't know about 3rd parties holding my stuff and for me to get an nft in return.  What if I lost access to my nft thingy who gets the coin?