I really doubt Gulden has any use case in a world of blockchain. Just another token based on a flimsy concept? That is my impression.
Buy something which actually has utility.
Mwoh, I just payed my real lunch in a real lunchroom out here in the real world.
Use case? Check.
Nice. People don't understand or realise what's happening on the ground. While in Amsterdam recently I treated a group of friends to a slap up meal here:
https://hearthamsterdam.nl/Great food and a great experience. Paid with Gulden and the transaction went through immediately. More bricks and mortar merchants are joining the revolution all the time and,, with the community in the Netherlands growing exponentially, it's only a matter of time before the tipping point for mass merchant adoption and use is reached.