Delays
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There are several delays built in to Lightning.
Time Lock Delta / CLTV delta
- Time Lock Delta is the same as CLTV delta
- It is a setting in the channel
- each hop has a time delta, when you include that hop that delta gets added to the final absolute HTLC that the sender sends out
- if each hop has a 1 block delta, and there are 3 hops, then if we’re at height 0, the cltv expiry the sender uses for that first htlc is 3
Force-close delay / csv_delay
- csv_delay is the same as force close delay
- Set when opening a channel (lnd: remote_csv_delay)
- How many blocks to wait to get funds back in a unfriendly close