Circle’s Post-Quantum Security Whitepaper

Explore how Circle’s phased post-quantum roadmap is designed to support Arc’s long-term security, resilience, and institutional readiness

Quantum computing introduces new long-term risks for blockchains, digital assets, and financial infrastructure. Circle’s Post-Quantum Security Whitepaper explores a phased approach to post-quantum resilience across Arc, USDC, smart contracts, validators, and supporting infrastructure.

The whitepaper covers potential approaches to quantum-secure signatures, private execution environments, validator hardening, infrastructure migration, account recovery, and the operational considerations that may be relevant to supporting long-term digital asset security as cryptographic standards evolve.

Read Circle’s Post-Quantum Security Roadmap Whitepaper

English

Arc testnet is offered by Circle Technology Services, LLC ("CTS"). CTS is a software provider and does not provide regulated financial or advisory services. You are solely responsible for services you provide to users, including obtaining any necessary licenses or approvals and otherwise complying with applicable laws.

Arc has not been reviewed or approved by the New York State Department of Financial Services.

The product features described in these materials are for informational purposes only. All product features may be modified, delayed, or cancelled without prior notice, at any time and at the sole discretion of Circle Technology Services, LLC. Nothing herein constitutes a commitment, warranty, guarantee or investment advice.

Post-quantum cryptography remains an evolving area of research, standard-setting, and implementation. The features, design approaches, and roadmap items described here reflect Circle’s current thinking based on available standards, technical assumptions, and product plans, all of which may change over time. Quantum-related risks, timelines, and mitigation strategies are inherently uncertain, and no post-quantum design can eliminate all future security risk. This material is provided for informational purposes only and does not constitute a guarantee, warranty, or commitment regarding future performance, resilience, or availability.

USDC is issued by regulated affiliates of Circle. See Circle’s list of regulatory authorizations.