Circle said in an official announcement that its EVM-compatible Layer-1 Arc will implement a quantum-resistant cryptography roadmap ahead of its planned mainnet launch later this year. According to the company’s official blog, the roadmap includes phased security upgrades, validator enhancements, and a target of sub-500 millisecond finality. The update expands on Circle’s previously stated focus on early quantum resistance and adds new performance and validator details to Arc’s launch plans.