Microsoft has introduced its Majorana 2 quantum chip, claiming a 1000-fold increase in reliability over its predecessor. Announced at the Build conference, the chip features an average qubit lifetime of 20 seconds, with some lasting up to a minute. The design shift from aluminum to lead-based topological superconductors enhances qubit protection from interference. Microsoft aims for scalable quantum computing by 2029, leveraging AI tools to optimize research and manufacturing processes. The announcement raises concerns about the potential for quantum computers to compromise public-key cryptography, including Bitcoin. With an estimated $461 billion in Bitcoin at risk, the industry is increasingly focused on the implications of "Q-Day," when quantum capabilities could threaten digital security.