Satoshi Nakamoto about Quantum Computing and #Bitcoinâs SHA-256 hashing function. 
Discussion
folks should see the bigger picture. this is a portal. Basically, we might be able to send code to parallel universes, which is set to crawl and identify the main characteristics of that universe, and then build biological Al to spec that can explore those universes and plant our DNA in suitable places there
This is not about quantum computing.
Even a quantum computer cannot break sha256, it's elliptic curve cryptography and discrete log proofs that are broken.