[Arc Releases Post-Quantum Design and Roadmap, Preparing for Blockchain Security in the Post-Quantum Era] Foresight News reports that Circle's Layer 1 blockchain, Arc, has published an article announcing the release of its post-quantum design and roadmap. The initiative aims to proactively defend against potential threats posed by quantum computing to blockchain, ensuring end-to-end security for wallets, private states, validators, and infrastructure. The roadmap includes support for post-quantum wallet signature schemes at mainnet launch; short-term implementation of post-quantum private state protection through private VMs; and gradual upgrades to infrastructure and validator signatures in the medium to long term. Arc's post-quantum design adopts a full-stack approach with user-selectable options, supporting post-quantum wallets, private smart contract state protection, and compatibility with the EVM ecosystem, thereby avoiding large-scale forced migrations.