Innovative Wallet Offers Solution to Mitigate Bitcoin's Quantum Computing Risks Without Forking

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 requiring any modifications to the underlying network. Postquant Labs introduced the Quip Network's post-quantum bitcoin wallet, which utilizes Arch Network, a system enabling developers to build smart contracts directly anchored to Bitcoin. The wallet incorporates a post-quantum signature scheme known as WOTS+, which is a tested cryptographic technique that does not rely on elliptic curve math, making it resistant to quantum computer attacks. By utilizing a 'Layer 2' network, developers can add features without altering Bitcoin's base layer. This approach provides an alternative to proposals from Jameson Lopp and Paul Sztorc, which have been met with resistance from the community. The Quip wallet's launch occurs amidst an ongoing debate regarding Bitcoin's preparedness for quantum risk, with the company's CEO stating that their approach offers similar protection immediately, without the need for a protocol upgrade. The setup does not require a soft fork, consensus change, or community vote, providing a more straightforward solution. However, the approach has its technical trade-offs, with some arguing that Layer 2 protection may be insufficient due to the potential for public key leakage. The wallet app is set to launch soon, and a third-party audit is currently underway. Postquant Labs' CTO, Dr. Richard Carback, stated that their approach reduces the window for a quantum attack to as little as two blocks, roughly 20 minutes.