A lot of people still think quantum computing is something way off in the future, but honestly the pace of progress has been surprising. It’s moving faster than most of us expected.right now, bitcoin and most other cryptocurrencies are built on elliptic curve cryptography . The problem is, once a public key shows up on-chain, a powerful enough quantum computer could, at least in theory, reverse it and figure out the private key.
Now,i am not saying this happens tomorrow,but if bitcoin does not upgrade its cryptography in the next 3–5 years, the risk gets very real. Quantum hardware is improving step by step, and once it crosses a certain threshold, the current security model won’t hold up.
We’re talking about the world’s fifth largest asset here. If it doesn’t adapt, the idea that its security could collapse almost overnight and bitcoin price will go to zero.
Really, are you afraid? I am not at all. I will say don't worry; if something like this happens, we can hard fork the Bitcoin blockchain to upgrade it. Bitcoin developers aren't just sleeping. And even if quantum computing systems become true, that would take a couple of decades. This isn't really easy to calculate using the Elliptic Curve Digital Signature Algorithm (ECDSA). I will advise you to engage in some other discussions on the forum that has been created about quantum computers.
The current quantum computing system isn't enough to break ECDSA right now. Because the current quantum computer has a few thousand noisy qubits, and if it does want to break ECDSA, then it needs at least millions of physical qubits. In the meantime, I believe Bitcoin developers will find the solution to quantum threats. A lot of institutional investors are involved with Bitcoin; before something happens, they will work together with Bitcoin developers. So stay calm.