v1 lightning channels: one side funds a transaction to make an open, funds are all on their side

v2 lightning channels (dual-funded): both sides collaborate to make a transaction, funds can be in any amount on either side. it’s basically a mini coinjoin/payjoin onchain for every lightning channel that uses it

you can multifundchannels in CLN; if every peer uses v2 opens that will let you build basically your own decentralized coinjoin that results in channel opens 😎

no coordinator, all in one tx

add in liquidity ads and you can get multiple inbound channel capacity, again all in one tx with the payment for that liquidity being just more available inbound.

it’s a huge game changer on lightning’s onchain footprint

splicing builds on this and will let you do even more complicated liquidity movements in one transaction. move liquidity between channels, fund a new channel from an existing one, etc. All in one transaction