[MicroCloud Hologram Plans $400 Million Investment to Upgrade Bitcoin Protocol] Nasdaq-listed company MicroCloud Hologram announced a $400 million investment to upgrade the Bitcoin protocol to defend against quantum attacks. The plan involves developing a quantum-resistant protocol based on a multi-layer hybrid encryption architecture, introducing a parallel verification mechanism to validate post-quantum signature algorithms and traditional signature algorithms. Users will have the option to choose dual signatures to enhance security and avoid systemic risks.