Builders permission?
not really, anyone can copy whatever they like if they are building it block by block again. Ain't nobody got time to go asking for permission, if you have something that someone else copied let them know and anyone else but I'd take it as compliment and just ask them to give you credit if it was your idea, clearly from the video it wasn't your building
...so you must just be asking for credit for the idea of building a dragon statue in your town
And of course if you are copying someones else's stuff give them credit but that should go without saying.
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