Best Storage Method for Bitcoin in a Post-Quantum World.

[promise444c5]

Let me be more specific and make it easier to understand.
If you have a cold wallet, and you use it to generate seed phrase, keys and addresses and no one knows your seed phrase nor private. In the post quantum world, if you make transaction, the public key of the address you used to make the transaction will be known on blockchain which quantum computer only needs to brute force your bitcoin address private key. That is the reason it is advised that people should not reuse bitcoin address this time. Cold wallets are not resistant against quantum computers. What is resistant against it for now is not to reuse your bitcoin address.

You seem to forget that we currently do not have quantum computers powerful enough to brute force the public keys of a cold wallet to get the private keys. The current quantum computers we have now lacks the required qubit count, coherence time and the power to perform such a complex calculation.

It'll only take quantum computers with the IBM's 1,121 superconducting qubit processor to perform such a task as this is the only way to unlock the full power of quantum computing, and mate I don't think we have such computing power right now.

It’s not about Cold wallet mate! Cold wallet isn’t up for discussion so far the standard still exposes public keys when transactions are made and AFAIK, Cold Wallet Storage isn’t same as dormant, it doesn’t mean transactions won’t be carried out either the only difference with hot wallet is just that the important part of the transaction is carried out offline and the wallet it self never connects to the internet making it have a storage which is “cold” ..

I get your point aswell, but you need to understand that public keys is no different for whatever  storage you choose and will always be exposed whenever you send Sats out, doesn’t matter if it’s cold or not  and the moment you use such address again then your Sats are at risk and again doesn’t matter if it’s cold storage so it’s not like there’re some public keys that will be immune to such attacks when the time comes so far with the current standard.
I saw same mistake from dullen007 post just right after my post , I didn’t correct it because he’s a newbie and will probably realize it overtime what he said was wrong if he’s truly interested in learning..

For the part I ruled out, that’s not even near to being true.. The Particular QC  you mentioned is IBM Condor and it’s been  available since 2023 but error prone which makes it less performant even with the high qubit count, after that year another QC was being released in 2024 which has lesser “quantum-bit” count  compared to IBM Condor but performs better with low error rate.. you can browse it..

[Mehmet69]

Okay I got the inspiration to write this thread on our local board after reading a topic on the Bitcoin Discussion board, it led me into doing further research on the topic and then I learnt a few things. Bitcoin and Blockchain Technology is indeed very vast and everyday we learn, I bet a lot of Nigerians didn't have a clue about what we are about to discuss here on this thread.

Okay in this topic, we'll be discussing the future of Bitcoin storage in a world dominated by quantum computers or quantum computing.
First of all what is quantum computers?
These are advanced computers, unlike the ones we see everyday, unlike the regular computers that uses bits i.e 0s and 1s to process data, these new types of computers uses principles of quantum mechanics to process data, they make use of quantum bits or what is otherwise known as qubits. In a nutshell, these computer is a bombshell. You might want to ask what's so special about these computers and why would it be a thread to the safety that Bitcoin storage has enjoyed over the years. Alright, one crazy quality of these computers is that, due to its ability to exist in multiple states simultaneously, they can be able to process vast amount of data in parallel, which enables them to be able to solve complex or even impossible problems, plus these computers can easily break into certain encrypted algorithms, so this computer in the hands of an evil miner automatically means big problem for Bitcoin.
So now, in my research I was able to understand there are a few counter measures that could be employed in order to protect our Bitcoin assets.

1. First is the use of a Multi-Signature Wallet. These wallets requires multiple private keys to authorise a transaction, so even if a quantum computer manages to break and compromise one private key, the hacker still won't have access to the funds as it'll still require him to break all other keys.
2. Use of One Address Per Transaction. Even with a quantum computer, a hacker will only target your funds if your public key is exposed, so by using one address per transaction, it'll limit the exposure of your public keys, thus making it impossible for your funds to be targeted.
There are several of them, but I intend to make this thread as short and readable as possible so I'll stop here and avail my readers to engage and also shares their thoughts on how they feel Bitcoins could be kept safe in such a situation.

@op . You have given a very deep argument. Quantum computers are really a matter of concern. But, since the creation of technology, many things have come before us which have become one of the causes of our harm. People have remedied that harmful technology through new technology. This has happened in the past and will happen in the future too. Every time a technology is invented to harm us, that damage will be remedied through new technology.

Quantum computers are also the same thing. This Bitcoin technology started in 2009. This technology has been encrypted through blockchain in such a way that no one could hack Bitcoin even in 2025. This will happen in the future too. Because quantum computers have not been successfully invented yet. Also, Bitcoin developers are researching the security of Bitcoin every moment. So even if a quantum computer is invented, it does not seem so easy to hack the system by breaking the encryption of Bitcoin. And I think it is almost impossible to create such technology which can cause problems in the Bitcoin system.