Bitcoin’s transaction model is relatively simple: one signature per input in the UTXO model. Upgrading to a quantum-resistant signature scheme is straightforward and can be rolled out incrementally via soft forks.
Firstly, I'm in the camp of "QC is probably never going to happen", but assuming real advancements are demonstrated, we could do something like announce soft-forks to enable QC resistant scheme and users just need to "spend into their new address".
Changing subjects, Monero's big problem isn't even this....its that because of the nature of hidden balances, no one can prove that an inflation bug doesn't exist. There could be 2x the amount of monero floating around, but we can't know that....thats why Bitcoins approach to "layered money" is better, have a completely transparent base layer, but then implement security at L2 / spending level (ie. LN). This is the best balance all around.
Ed25519
This is actually a much bigger issue for the tech world outside of bitcoin. Almost every SSH is using this now. So if QC ever arrives Bitcoin's position is going to be much better then the rest of tech landscape as a whole.
Firstly, I'm in the camp of "QC is probably never going to happen", but assuming real advancements are demonstrated, we could do something like announce soft-forks to enable QC resistant scheme and users just need to "spend into their new address".
Changing subjects, Monero's big problem isn't even this....its that because of the nature of hidden balances, no one can prove that an inflation bug doesn't exist. There could be 2x the amount of monero floating around, but we can't know that....thats why Bitcoins approach to "layered money" is better, have a completely transparent base layer, but then implement security at L2 / spending level (ie. LN). This is the best balance all around.
This is actually a much bigger issue for the tech world outside of bitcoin. Almost every SSH is using this now. So if QC ever arrives Bitcoin's position is going to be much better then the rest of tech landscape as a whole.