Blockchains quietly prepare for quantum threat as Bitcoin debates timeline

While current quantum computers cannot break Bitcoin, major blockchains are quietly preparing for the future threat. Aptos proposed opt-in post-quantum signature support, and Solana tested quantum-resistant transactions, framing these as future-proofing infrastructure upgrades. Ethereum co-founder Vitalik Buterin has argued that early preparation is necessary due to the high cost of failure and the multi-year migration timeline, citing a roughly 20% chance of cryptographically relevant quantum computers emerging before 2030. In contrast, the Bitcoin community remains divided on how urgently to address quantum risks. Some developers and cryptographers, like Blockstream CEO Adam Back, dismiss near-term fears, arguing that amplifying distant risks fuels unnecessary panic. Conversely, investors like Nic Carter suggest that influential developers dismissing the risk is bearish, as Bitcoin's value relies on long-term confidence, and perceived complacency may drive capital away. This tension means that for Bitcoin, managing the discussion around long-term risks may be as crucial as managing the technical risks themselves, as any proposal for quantum-resistant upgrades provokes immediate scrutiny regarding the network's fundamental security.

(Source：Cointelegraph)