How to accept bitcoin and giving each user a unique address amd automatic withdrawal I want to create a website when users on singing up will get a unique address and after getting my websites service,they can withdrawal the money also automatically.
Is that bitcoin integration free ? Plz help i am noobie to this.
You could use online providers such as:


https://www.blockchain.com/api 
https://www.blockcypher.com/dev/


Or install Bitcoin Core to run a full node and use RPC APIs