B. Channel operations If all peers are online and cooperative, a channel state is updated by simply signing a new version of the allocation transaction, which requires signatures from all channel peers. In case not all channel peers are online or ready to sign a state update, a new operation transaction is created, which spends inputs only of those peers who like to update their state (for instance, make a payment to each other).

Once all the peers are online, they should cooperate and sign a new version of the allocation transaction, which must correspond to the previous allocation transaction with all operation transaction graphs applied on top.