A NIST Algorithm Is Not Quantum-Safe. "We use a NIST post-quantum algorithm" is not the same sentence as "we are quantum-safe." Here's the gap.👇 A chain can swap in a standardized post-quantum signature and still publish the public key the moment you spend. That key sits on-chain, in the open, for as long as the signature scheme is considered strong. When the next threshold is crossed, the same exposure exists for the new keys. And the same coordinated migration has to happen across every wallet, every contract, and every token built on that chain. That's not a fix. It's a treadmill with a better algorithm on it. The question to ask any project is simple: when value is sitting at rest, is a live public key protecting it? On QuanChain the answer is no. Funds sit behind an address hash. The key is revealed only at the moment of spending, and by then the funds have already moved to the next child wallet. Which algorithm you use matters. Whether you ever expose the key matters more.