I am also unsure as to how crypto benefits ownership of assets (eg "Axies"). I looked into NFTs recently, and (to my very simplified understanding) there seems

I am also unsure as to how crypto benefits ownership of assets (eg "Axies"). I looked into NFTs recently, and (to my very simplified understanding) there seems to be: Asset <-> Token <-> Blockchain where the <-> are links of some kind. I understand that the T-B link on the right is secure and uses all the fancy crypto stuff (smart contracts, whatever) . However, the A-T link is less clear to me. Concretely, if you 'own' a Pokeman/Axie then that is the T-B link, but what links the Axie to the token? A URL/URI? So where is that stored - in a database somewhere? It all seems very suspect, but maybe I'm missing something.