here a good start
https://www.binance.com/en/blog/421499824684901024/What-Can-You-Expect-on-Futures-Expiration-Day
looks like it is structured the way it should
bucket shop ?
I put in a limit order and it shows up in the market depth , what more proof you need ?
the question is does Binance takes the other side of a trade ? Who clears the trades and etc.