<https://academy.binance.com/tr/articles/custodial-vs-non-custodial-nfts-what-s-the-difference>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://academy.binance.com/tr/articles/custodial-vs-non-custodial-nfts-what-s-the-difference>