New Wallet Offers Solution to Mitigate Bitcoin's Quantum Vulnerability Without a Network Fork

The developers of a new wallet claim to have developed a method to address the risks associated with quantum computing using a smart contract layer that operates in conjunction with Bitcoin, without necessitating any modifications to the network itself. Postquant Labs has introduced the Quip Network wallet, which utilizes the Arch Network system to enable the creation of smart contracts directly anchored to Bitcoin. This approach allows for the addition of a post-quantum signature scheme called WOTS+, which does not rely on elliptic curve mathematics that could be compromised by a quantum computer. By employing a 'Layer 2' network, developers can introduce new features without altering Bitcoin's base layer. The launch of Quip's wallet occurs amidst an ongoing debate within the Bitcoin community regarding the best approach to mitigate quantum risk. Prominent developer Jameson Lopp has proposed a plan to phase out quantum-vulnerable addresses, while Paul Sztorc has suggested a hard fork to create a quantum-resistant chain. Quip's approach eliminates the need for a soft fork, consensus change, or community vote. However, some argue that Layer 2 protection may be insufficient, as Bitcoin's mainnet public keys can still be exposed to potential quantum attacks. The Quip wallet is set to launch next week, and a third-party audit is currently underway. The wallet's quantum-resistant accounts are already available on Ethereum and Solana, but the Bitcoin deployment is new, and the Arch Network is still in its early stages. According to Postquant Labs CTO Dr. Richard Carback, the approach reduces the window of vulnerability to a quantum attack to as little as two blocks, approximately 20 minutes.