[Not directly Q related but considering the number of posts here about Crypto, this seems worth posting]

Bitcoin’s Price After the First Quantum Attack

So what happens to the price of bitcoin if/when it becomes evident that quantum computers are powerful enough to run crypto-breaking algorithms? Its really not that complicated. Bitcoin, and the entire digital currency world, is based on trust and the security of private key signing. When that trust is gone, the value of bitcoin goes to zero, immediately.

Tik Tok – Bitcoin’s Days Are Numbered

The probability of breaking bitcoin is ticking up each and every day. And for those that think bitcoin is safe – that it still has another decade or two before quantum computers are powerful enough to break cryptography – then they’re forgetting the historical growth curve of computer processing. They’re forgetting the disruptive power of compounding.

Give it another couple of years and they will outperform all computers that could ever be built on earth, even if you use the entire matter of the earth to build them. And then give it another couple of years and they will outperform all computers that could possibly be built – even if you use the entire matter of the universe at your disposal to build the best possible computer any human could ever design, and you gave it the length of the universe in time to work on a problem, it still couldn’t solve the problems that the quantum computer could, in due course, in less than an hour. – UNIVERSITY OF OXFORD PHYSICIST DAVID DEUTSCH