Got it, that's helpful.
So basically in the case of anchor channels 2/2 open, 2/2 close
..and any htlc +n (unilateral close)

theinstagibbs

1 p2wpkh(to_remote)
1 p2wsh(to_local)
N p2wsh(one per htlc)
2 p2wsh(two anchors)

bitcoin

Transaction size calculator

Roll

Thanks. I can never find enough useful tools like this.

What would be a typical anatomy of a LN channel open / close?
would 2 input / 2 output be the usual scenario?
or this is more complicated because anchors and other factors?
In my mind a channel is a 2/2 multisig.

Anyone know?