How safe is BSC (bep20) chain? Is it okay to store a large amount of BTC and USDT on that chain? If Binance shutdown will the chain still operate normally?
I think BSC is safe enough for now. BSC is liked by many people because of its very small transaction fees. However, many people doubt whether to store coins there for a long time. BSC was created by Binance, and they are still running because Binance is still working. It is not recommended to store assets on an exchange because something bad could happen and there is a risk of losing your assets.
BTC and BSC have different blockchains, so it is impossible for you to store your BTC there. If you mean wrapped tokens, that is not recommended. Tokens may fall and you will lose your money. It's better to use real coins and don't store your coins in an exchange wallet.
Storing USDT is still better than wrapped tokens, but also not for long time. USDT is a centralized token and can be frozen at any time.
I don't know exactly what will happen to BSC if Binance fails. It is also very likely that there will be problems with BSC considering that the coin runs on it. As I said before, maybe you are safe using BSC now, but not good for a long time.