# Cross chain swap protocol

Cross chain swap protocol is a core of the ColdFi. It's a set of smart contracts and oracles that allows you to instantly swap tokens in different chains.

This protocol is implemented as a set of Smart Contracts, Oracles and Liquidity Bridge.

Liquidity Bridge is a smart contract where any user can deposit supported tokens on supported chains and receive % of trades that are done using users tokens. There will be no impermanent losses as there are no pairs in Liquidity Bridge and user assets 100% secured by same tokens on other chains.

It uses 3 types of liquidity:

-DEX LP pairs on a different chains

-Lending pools liquidity

-Lending bridge liquidity

Cross chain swap protocol implements a combination of the Automated Market Maker(AMM) and Market Maker(MM) trading.

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