Are there any discussion threads about the topic below that can be identified?
Would recording signed block checkpoints of a
proof-of-stake (PoS) blockchain in a
proof-of-work (PoW) blockchain by bonded signatories be of value for mitigating PoS
long range attacks, and
nothing-at-stake attacks? If a consensus mechanism could be devised for a PoS blockchain's state recorded on a PoW blockchain, then a PoS Blockchain could achieve greater transaction integrity while improving the effective throughput of PoW mechanism at an aggregate level.
If a distributed
Crossblockchain Checkpoint Consensus could be reliably achieved, it will create a symbiotic marriage between PoW and PoS mechanisms that can scale transaction rates (a PoS blockchain characteristic) with greater integrity (a PoW blockchain characteristic). Such crosschain checkpoints could also better protect consumers from potential PoS-related fraud with the application of special smart contract primatives.
This concept to establish loosely coupled protocols on top of Bitcoin should achieve at least 2 orders of magnitude greater transaction throughput, and could buy time while Lightning Network Technology is being matured.