Research into Bitcoin’s quantum-resistant security is moving forward with several new proposals and early prototypes, highlighting a broader effort to prepare the network for potential long-term cryptographic threats. Rather than relying on a single approach, developers are exploring multiple layers of the Bitcoin stack, including signatures, transaction construction, and wallet recovery.
New proposals target different attack surfaces
Among the developments, Jonas Nick introduced SHRIMPS, a hash-based signature scheme designed to support multi-device signatures. This is notable because it combines a quantum-resistance-oriented signature concept with a setup that could be practical for users operating across several devices. Hash-based signatures are often discussed as a potential path in a post-quantum setting, and multi-device support expands the range of possible use cases.
In parallel, Avihu Levy proposed QSB, a quantum-safe transaction construction method that does not require a soft fork. That detail is particularly important in the Bitcoin context, where protocol changes typically involve extensive review, coordination, and compatibility considerations. A design that avoids a soft fork may therefore attract attention as the community evaluates realistic deployment paths.
Wallet recovery enters the post-quantum discussion
Another area of focus is wallet security. Olaoluwa Osuntokun developed a zk-STARK-based wallet recovery prototype that allows users to prove ownership without revealing mnemonic phrases. The idea addresses a critical challenge for future security architecture: how to preserve privacy while still offering a workable recovery mechanism.
Taken together, these efforts remain at the proposal and prototype stage, but they point to a clear trend. Bitcoin developers are not waiting for quantum risks to become immediate. Instead, they are building and testing options in advance, aiming to strengthen the network’s long-term resilience through parallel research and experimentation.