Hi,
I've been trying to figure out the mechanics of Lightning fees, especially in the case of routed payments. Unfortunately, I haven't had any success in finding a high level description on the topic. I'm hoping somebody is able to point me in the right direction? Example: A multi-hop routed payment where A needs to pay D through B and C. Established channels are A -> B -> C -> D. What I'm looking for is a high level explanation of how fees are established, announced and ultimately claimed in a payment like this. Some of the questions that come to mind are: - Does A know ahead of time the fees on B and C, or only when trying to set up the payment? And how? - How does A know the amount of fees that need to be added to the payment to cover all fees? - Is D aware of the full amount including fees or is that somehow hidden? - How are the fees actually claimed (who ends up paying whom)? Thanks in advance. /Thomas
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