Solvers can fetch threshold signatures on demand #75
Description
Presently, dcipher nodes automatically verify swap requests on the source chain and release funds to solvers. This has two implications:
- one of the dcipher nodes pays the gas for reimbursement
- a transaction is submitted for every reimbursement on the source chain.
This could lead to higher/more unstable verification fees, and higher gas spent overall by the network.
It was discussed here that we could consider allowing solvers to redeem their reimbursement by fetching threshold signatures from dcipher out of band.
A benefit of this is that they could batch many reimbursements into a single aggregate signature and verify them once, saving gas.