Constructor parameters for payment channel actor
The Lane state tracks the latest (highest) voucher nonce used to merge the lane
as well as the amount it has already redeemed.
Specifies which lanes to be merged with what nonce on channel_update
Modular Verification method
Payment Verification parameters
A voucher is sent by from to to off-chain in order to enable
to to redeem payments on-chain in the future
A given payment channel actor is established by from
to enable off-chain micro-transactions to to address
to be reconciled and tallied on chain.