In case Bitcoin transaction fees go up, it’s nice to have a cost-efficient alternative for sending BTC.

One of those is Liquid (yes you gotta trust the federation)…here is a comparison of SideSwap.io and @Boltz - Non-Custodial Bitcoin Bridge two services that allow you to move your funds to L-BTC and back to BTC.

Here are the differences in the fees you pay for a peg-out or swap and an explainer how it works