BOLT2

Channel Close

MUST allow multiple HTLCs with the same payment_hash.

理由

If a node did not accept multiple HTLCs with the same payment hash, an attacker could probe to see if a node had an existing HTLC.

複数の HTLC を追加することができる？

Note that the non-funder is not paying the fee, so there is no reason for it to have a maximum feerate.

誰が fee を払うか

channel_reserve_satoshis

1% of the channel total is suggested

多分これは後からは変更できない

update_fee