Stablecoin giant Circle has revealed a quantum-resistant roadmap for its Layer-1 blockchain Arc. aiming to implement it on a full stack. The plan aims to defend against the collapse of today’s encryption standards.
Experts are warning about Harvest Now, Decrypt Later (HNDL) attacks. This involves attackers collecting encrypted blockchain data now, like public keys, with the intent of decrypting it later, when quantum computers reach a level of capability that makes it possible. Circle is preparing the ecosystem to withstand such quantum computer attacks.
How Quantum computers could break crypto
By 2030, it’s estimated that machines boasting over 10,000 logical qubits could crack the Elliptic Curve Digital Signature Algorithm (ECDSA). This algorithm secures every crypto wallet in use today.
With over $1.4 trillion in stablecoins currently sitting in quantum-vulnerable systems, Circle stresses that quantum resistance must exist in actual code, not just research papers. Waiting too long creates a systemic risk for every holder, custodian, and institutional provider in the space.
Following the news of the quantum-resistant infrastructure, the native tokens linked to the Arc ecosystem saw a huge spike. The ARC token jumped 16.89% to $0.001294 shortly after the news went public.
Implementing through phases
Circle’s approach isn’t about a sudden shift; it’s done in planned phases to maintain the stability in the ecosystem. When the mainnet goes live in 2026, Arc will provide an optional feature for quantum-resistant signatures. This means users can start building secure wallets right away.
The proposed plan includes immediate protection for private stakes. This will be achieved by securing both balances and recipient data within a private virtual machine. In addition, the plan outlines a long-term transition to validator authentication.
Though these new signatures might be two to ten times the size of the old ones, Arc aims for transactions under seconds and very low fees, using USDC as its native gas token. The platform maintains full compatibility with the Ethereum Virtual Machine (EVM), so existing developer tools won’t skip a beat.
While Circle prepares for the 2030s, the market is still reeling from the $280 million Drift Protocol hack, the second-largest in Solana’s history. That exploit relied on contemporary weaknesses like social engineering and durable nonces.
