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 What the use case for swapping some sats from lightning to liquid🤔🤔 
 Liquid is pure privacy 

Lightning isnt  
 Oh really? What makes liquid so private, I haven't really read into it at all 
 “Centralization” permits confidential txs. 
 I seeee, thank you🫂 
 More privacy and cheaper fees. Don’t need to run a lightning node. 
 What if I'm already running a node  
 Untraceable transaction pretty much  
 It's a useful way to balance your lightning channels and manage liquidity. 
 I just use boltz.exchange to swap to on chain and then open more channels  
 And that's a great method until on chain fees sky rocket again. Liquid let's you hold your sats a third way so you can wait out high on chain fees but still utilize your lightning channels. Just a good tool to have in your back pocket. 
 I can see it being useful if someone fulfills the following criteria. 

1. stacks through LN which is becoming more and more common with P2P tools like robosats and Lnp2pbot as governments clamp down on on-ramps.
2. Doesn't have their own LN channels or the ones they have are too small. 
3. The fees on the bitcoin main chain are high.

If the 3 above are true then they can use it to offload custodial LN sats while they build up a large enough UTXO where it makes sense to transact on the main bitcoin chain.

Funny enough this exact scenario happened to me last year when fees went over 500s/vb and my channels got remotely force closed at the same time forcing me to use custodial LN to stack. Then liquid to accumulate a few million sat UTXOs before transferring to cold storage.

It would also be useful for someone that's only getting started stacking and doesn't want to KYC themselves so they go straight to these p2p tools using custodial LN wallets. These people won't be buying millions of sats per transaction. So they might want to offload some of the sats in their custodial wallets to something else before they can do an On chain transaction. 
 It's a good tool for all the mentioned use cases. Just remember Liquid is an IOU not the real thing. So there's trade-offs as long as you're aware of it. 
 cheaper liquidity management when onchain fees are high