# Entropy Bridge Chain
Entropy also provides bridge chains so that assets of external public blockchain with versatility can be used within our blockchain. Bridge chain supports various coins and tokens commonly used in public chains to be used within the entropy blockchain. This will help expand and circulate the value of blockchain assets over a wider range, creating an influx of more blockchain users from outside. In particular, it supports the use and withdrawal of Ethereum-based coins/token and BSC-based coins/token, which have the most diverse token series, through entropy's bridge chain.
<Deposit and Withdrawal in Entropy of Ethereum and BSC through Bridge Chain>
External tokens flowing through the bridge chain are locked and minted with the same quantity of wrapped tokens within the entropy, in which verification is carried out through the verifier of the bridge chain. The verifier of the bridge chain exists separately from the 21 validators of entropy, and it mainly verifies the deposit and withdrawal of external assets. On the contrary, Wrapped Token, which is withdrawn to the external blockchain, is verified through a validator, and then burned within the entropy, and the previously locked token is released and sent to the outside.
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