i am trying understand and binance smart chain
from what have understood when i would add bsc in metamak , all the coins would have same address
if yes hows is that possible , its just confusing
Because Binance Smart Chain is an Ethereum hard fork that uses the Proof of Staked Authority algorithm for consensus.
Other projects have done the same, the full list of projects is on this site and here you can add the necessary ecosystems to the metamask
https://chainlist.org/