Tether CEO Paolo Ardoino Highlights Long-Term Risks Quantum Computing Could Pose to Bitcoin's Security

Tether CEO Paolo Ardoino has sparked significant discussion within the cryptocurrency community by highlighting the long-term risks quantum computing

Tether CTO highlights quantum computing risks for Bitcoin

Tether Chief Technology Officer (CTO) Paolo Ardoino has sparked discussion within the cryptocurrency community over the long-term risks that quantum computing could pose to Bitcoin's security.

In a series of recent statements, Ardoino highlighted that while quantum computing does not pose an immediate threat to Bitcoin, its advancement could eventually enable the recovery of Bitcoin that is trapped in lost or inactive wallets. This includes the estimated 1.1 million BTC that is linked to Bitcoin's pseudonymous creator, Satoshi Nakamoto.

“Quantum computing is still very far from any meaningful risk of breaking Bitcoin cryptography. Quantum resistant addresses will eventually be added to Bitcoin before there is any serious threat. All people alive (and that have access to their wallets) will move…,” said Ardoino on Feb. 8, 2025.

Quantum computers leverage quantum mechanics to solve complex problems exponentially faster than classical computers. Their ability to crack elliptic curve cryptography (ECC) could enable them to expose private keys from public addresses, especially for inactive wallets where the keys have remained unchanged.

Ardoino stressed that Bitcoin's current cryptographic defenses are still secure, but he warned that “any Bitcoin in lost wallets, including Satoshi’s if he is not alive, will be hacked and put back in circulation” once quantum technology matures.

The threat to Satoshi's stash and market stability

The potential revival of Satoshi's dormant coins has also raised concerns about the stability of the market. Analysts have noted that reintroducing even a small fraction of the 1 million BTC that is linked to Nakamoto could disrupt Bitcoin's supply dynamics, which have been largely predicated on the assumption that lost coins are permanently out of circulation.

“If quantum computers manage to unlock a significant portion of early lost BTC (like Satoshi's stash), it will send the market back to the stone age,” stated pseudonymous trader Crypto Skull, alluding to the potential supply inflation that could arise from such an event.

To mitigate this risk, some experts, like Ava Labs co-founder Emin Gün Sirer, have proposed freezing early Bitcoin transactions that used the outdated Pay-to-Public-Key formats, which expose public keys and are more vulnerable to quantum attacks.

Despite the concerns, Ardoino emphasized that Bitcoin's 21 million supply cap will remain intact regardless of any technological advancements.

Proactive measures and the path to quantum resistance

The crypto industry is already preparing countermeasures to the quantum threat. As noted by Ardoino, it is likely that Bitcoin will adopt quantum-resistant encryption protocols, such as quantum-safe signatures, before quantum computers become a tangible threat.

In such a scenario, active users are expected to migrate their funds to quantum-resistant addresses, while the coins in inactive wallets may remain vulnerable to exploitation by advanced quantum computers. Ardoino's remarks highlight the need for proactive adaptation.

“The history of cryptography is one of change and adaptation. We will adapt,” he added.