> 10 CONCLUSIONS
>
> Lightning Network scales Bitcoin payments via two-party payment channels and routing, although it may be bounded in terms of scaling and usability by its design.
>
> We propose CoinPool, a covenant-based payment pool construction, which takes the idea of sharing UTXO ownership to the next level. In CoinPool, Bitcoin users lock funds in many accounts within a single UTXO to instantly transact across the pool without much on-chain footprint; or use their accounts inside the pool for advanced protocols (e.g., payment channels), possibly even connected to other CoinPools or the LN. CoinPool users can withdraw their funds from the pool at any time.
>
> CoinPool introduces an alternative set of trade-offs: users get increased funds velocity and use Bitcoin throughput more efficiently, at the cost of high interactivity required by pool participants. CoinPool requires modifications to the Bitcoin protocol.

cointastical

I haven't read the paper in full yet so grain of salt but I suspect the benefit to lightning would be that coins/utxos in a pool could be used to create lightning channels making lightning a 3rd layer with a coin pool serving as a 2nd layer. Basically, you wouldn't require a on-chain coins/utxos to make a lightning channel which is awesome because we all assume on-chain txs will likely be very expensive in the future.

Can any of the author explain how CoinPool could be a complement to the lightning network?