Across is a cross-chain bridge for L2s and rollups secured by UMA's optimistic oracle. It is optimized for capital efficiency with a single liquidity pool, a competitive relayer landscape, and a no-slippage fee model.Across is powered by a permissionless relayer ecosystem**.**Across uses third-party relayers that risk their own funds to bridge assets. These relayers can choose to move funds far faster than the origin or destination chain's finality times, allowing for “fast fills.” ...
