Of course, this 3-layer structure is a tricky thing, and no inferior hands can do this kind of programming. This is what 40y of experience accounts for, I did it all, all the browser coding, all the smart contract code, all the SQL, all the CGI to link between floors. Try do it to see what I mean. That's why I keep the whole code for myself and for Expanse - I don't want any smart ******* take it and use in Ethereum Classic or Callisto, etc where else it can be used. This stuff makes Expanse unique because Expanse is blockchain that can handle 1M NFTs in it, and other BC don't. Simple as that