A simple way to do this is to lock up coins on a lightning channel and then use that state as input to a side chain. This would probably require some form of ma

A simple way to do this is to lock up coins on a lightning channel and then use that state as input to a side chain. This would probably require some form of massive multisig to form output consensus, which is a lot more efficient with Schnorr signatures, but not great. Bitcoin could become Turing-complete, private, and very efficient with the addition of a few op-codes required in zero-knowledge verification. This would probably lead to a hard fork because the “industry” would not accept it.