Adam Back Dismisses Fears Over Google’s 2029 Quantum Computing Milestone

Concerns about quantum computing posing a near-term threat to Bitcoin are being downplayed by early Bitcoin contributor Adam Back, who remains confident the network can adapt faster than the technology evolves.

The discussion was recently reignited after Nic Carter warned that advances in quantum computing could potentially compromise Bitcoin by 2029. However, Back argues that such timelines are being misinterpreted.

According to him, Google’s 2029 target refers to progress in building stable quantum systems for cloud applications—not machines capable of breaking modern cryptographic standards.

Back explains that compromising Bitcoin’s cryptography would require millions of highly stable, error-corrected qubits—something that remains well beyond current technological capabilities. Most experts, he notes, see such breakthroughs as a long-term challenge rather than an immediate risk.

In the meantime, development within the Bitcoin ecosystem is already addressing potential threats. Work on post-quantum cryptography is ongoing, with developers testing new solutions designed to protect user funds.

Proposals for quantum-resistant wallet structures and signature upgrades are already under consideration. These changes could allow users to move funds into more secure address formats through standard network upgrades, such as soft forks.

Back emphasizes that while quantum computers are still largely confined to experimental environments, Bitcoin’s software can be updated and deployed relatively quickly across the network.

Rather than signaling a crisis, he views the 2029 milestone as part of a broader technological evolution—one that the Bitcoin ecosystem is actively preparing for.