Quantum supremacy is but words for now. And although it is a possibility that is coming nearer in reality, there is nothing to be afraid of. This is only a big deal for FUD spreader and their victims. Quantum technology in computers is not monopolized by Google. The geniuses in the crypto world has already anticipated it long before it will even hit the market. In fact, steps have been done both in planning and in actual development that will somehow address this Quantum hype and FUD.
You don't understand me. Maybe you not read everything in the first post.
I think, google can change the software in this new kind of computer - and mine a little on the Bitcoin Network, to show, what a kind of efficiency this new computer has.
Maybe
with some similar computer can google (alone or with partners) decrease the mining power of China below 50% ... And then... As I wrote:
...
- firstly CPU mining. (technology A - public)
- then GPU mining. (technology B - public (fortunately) but technology A not an opponent)
- ... some other public technology, pools, merged mining, and so on...
- in future: technology X coming - (not published - owned by some (or one) persons/firms/...) AND (technology A and technology B and other public technologies aren't an opponent) - the controll of members of Bitcoin forum over bitcoin (and our "money") loosed!
...
No, this is incorrect. They are able to solve a program fairly fast, but this is a singular algorithm, and there have been cases of over computers being modified to try and beat the record, and it only took them 10x the amount of time... So much for a super-computer.
If Google does ever showcase itself brute-casing something like a private key, or even using their GPU/CPU to mine bitcoin or other currencies, and it's a drastic improvement (we'd need to be talking about 1000x the efficiency of computers nowadays for it to be a threat), then we can panic.