Right now it does. But not eventually. Quantum computer can reduce that to 80 bits.
Quantum computers are not magic tools that can solve any problem!
And where did I ever say that? Quantum computers could solve certain types of problems because algorithms are known for those certain types of problems.
Then why do you think Satoshi invented Pay to Public Key hash? It's not just to save disc space on the blockchain.
P2PKH existed from early days, it wasn't invented later.
I didn't say it was invented later. I said Satoshi invented it. Is that wrong?
That day we all wake up to an entirely different world where the banking system no longer works, military secrets are leaked and abused by the enemies and a large part of the internet would fall apart. You see the cryptography used in bitcoin and the security level is not just specific to bitcoin.
your'e trying to lump in other things along with bitcoin to try and make it sound like someone would have to be irrational to attack bitcoin using a quantum computer. perhaps bitcoin is a simpler target to go after than some of the things you mentioned. ever think of that?
I can have 256 bits of security if I use a particular address type
Bitcoin keys provide 128-bit of security, you can't have more than that regardless of your address type.
Sure you can. You have can have 256 bits as long as you don't leak the public key. Surprised you don't realize that.