Due to the open and permissionless nature of the SKALE network, every bridge from Ethereum mainnet will have its own token wrapping standards. This risks the evolution of an ecosystem with as many different and incompatible versions of popular tokens (USDT, USDC, BTC, ETH, etc) as there are bridges, with the result that liquidity could become fragmented; a version of USDC that worked with one dApp may not be supported by another.

The Europa Proposal suggests addressing this issue by creating a default mainnet bridge on a community-controlled SKALE Chain, thereby ensuring agreement around common token wrapping standards for the whole SKALE network without relying on any centralized services.