Circle's Layer-1 blockchain, Arc, will debut with quantum-resistant features designed to combat future quantum threats. Unlike legacy chains, Arc will not be waiting to add this feature later. Users create a wallet on the mainnet, they can choose a signing method that future quantum computers cannot break. This will ensure long-term security and protection of crypto assets in wallets. The move could make Arc attractive to institutions like banks and institutions. Arc's future strategy also includes ensuring that sensitive financial information remains private in the quantum era. The company's announcement comes amid concerns about the reliability of digital ledgers.