According to BitMEX Research, there has been significant technological progress in quantum-resistant signature schemes that Bitcoin could use, as reported in a Dec 23, 2025 thread (source: BitMEX Research, Dec 23, 2025). BitMEX Research shared a chart showing the signature sizes in bytes and the dates these schemes were proposed for Bitcoin, providing concrete data points for assessing potential on-chain data overhead if any scheme is later evaluated by developers (source: BitMEX Research, Dec 23, 2025). The post does not announce any activation, adoption, or timeline, indicating no immediate protocol catalyst from this update alone for BTC price action (source: BitMEX Research, Dec 23, 2025).