I think a implicit-trust powered blockchain is provably cheaper, provided you can guarantee trust for a sufficient amount of time. One such example I can find

I think a implicit-trust powered blockchain is provably cheaper, provided you can guarantee trust for a sufficient amount of time. One such example I can find is Luckychain[0] which is where I'd start if I was going to attempt something like this. Intel SGX is the closest thing we have to a legitimate system in which we can place trust in the client. That being said, it requires trusting the signer, Intel. And we have to trust that it can't be cracked even with government-level capability, for the duration of the network's lifetime. I wonder if you could somehow move the job of signing onto the blockchain itself, so it becomes self-trusting and autonomous. [0]https://github.com/luckychain/lucky https://github.com/luckychain/lucky