Bitcoin researchers Mikhail Kudinov and Jonas Nick from Blockstream have proposed the use of hash-based digital signatures to enhance Bitcoin's resistance to quantum computing threats. In a revised paper released on December 5, they argue that hash functions provide a robust foundation for digital signatures in a post-quantum era. This development is crucial as quantum computing progresses, potentially compromising older Bitcoin wallets, including those like Satoshi Nakamoto's, which are more vulnerable to such advanced computational threats.