# UBIT on Other Chains

Interoperability with other major blockchains is important for the growth of Ubit and the prospects of realizing its vision. One of the ways of securing it is through enabling the versions (wrappers) of UBIT on other chains.

Unlinke UBIT on Ubit, those wrappers are UBIT20 tokens are created whenever someone locks a certain number of tokens on the Ubit and gets issued the exact same amount of wrapper tokens on the target blockchain. If a user withdraws the wrapper from the target blockchain, the tokens burned and the UBIT tokens on Ubit are unlocked.

Currently, wrapped versions of UBIT token exist on Ethereum (mainnet), Binance Smart Chain and the Arbitrum One layer-2 optimistic rollup chain for Ethereum. The latter is a wrapper of a wrapper powered by the Ethereum-Arbitrum bridge and its withdrawals from Arbitrum are subject to the optimistic rollup rules.

### UBIT on Ethereum

Token contract: <https://etherscan.io/token/0x970b9bb2c0444f5e81e9d0efb84c8ccdcdcaf84d>

### UBIT on Polygon

Token contract: <https://polygonscan.com/address/0xf915fdda4c882731c0456a4214548cd13a822886>

### UBIT on Binance Smart Chain

Token contract: <https://bscscan.com/address/0x5857c96dae9cf8511b08cb07f85753c472d36ea3>

### UBIT on Arbitrum One

Token contract: <https://arbiscan.io/token/0xbdef0e9ef12e689f366fe494a7a7d0dad25d9286>


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