Quote from: d_eddie on September 15, 2020, 06:46:55 PM

Quote from: Febo on September 15, 2020, 06:10:00 PM

This is actually what matters. Energy spent and not hash power as so many take as main metric of how secure bitcoin network is. Hash power keep increasing because better and better ASIC miners gets built. But if energy put into securing Bitcoin network stays same that means that no matter how high hash power will go the network is same secure as before.

This is only true if the same technology is available to all the players.

https://techcrunch.com/2020/09/15/ibm-publishes-its-quantum-roadmap-says-it-will-have-a-1000-qubit-machine-in-2023/

Bitcoin ded in 3 years!

I don't get quantum computers. Why build one? What's the point?
They only talk about destructive purpuses: "with a quantum computer we can break this or that".
If it's only useful as a doomsday device, then stop trying to make one, dammit!