dev here: the characters aren't tradeable atm.

but something we do allow is for players to create characters on the main waifulabs site[1], and then share QR import codes of that custom characters with friends.

[1] https://waifulabs.com

Thanks that's interesting. Crypto isn't required for trade of course but I guess one place it helps is that the developer doesn't need to implement the trade details themselves, just read results from the blockchain. Not sure if this is even possible at the fidelity level people would want though without external data hosting, most NFTs I heard about just link to a resource on a server anyway, and that could be troublesome in a game.