According to @BitMEXResearch, in June 2013 Google acquired a 512 qubit quantum computer, which reignited concerns among Bitcoiners about potential quantum risks to Bitcoin security. Source: @BitMEXResearch, Twitter, Dec 23, 2025. According to @BitMEXResearch, this is documented as part of a 13-post timeline highlighting quantum-related headlines that affected Bitcoin community sentiment. Source: @BitMEXResearch, Twitter, Dec 23, 2025.