42 sats \ 1 reply \ @petertodd 22 Jun \ parent \ on: Free coinjoin coordination bitcoin
because gossip announcement channel size can be easily correlated with coinjoin input.
Public channels reveal to the world exactly which UTXO was associated with the channel; private channels do not. This is why mempool.space can label public LN channel opens with node IDs. For example: https://mempool.space/tx/37b07c1917fe814c4b504bd5a6746dd05d8140d6012d7d8b0e4321d91620db8d
LN does this as an anti-DoS measure. Without something similar to this you'd be able to advertise an infinite number of channels to the gossip network.
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0 sats \ 0 replies \ @MiddleWay 25 Jun
Exactly that. Private channels already hide finding UTXO, and the public ones cannot even with coinjoin. Unless all inputs will be equal.
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