The Department of Energy has launched the Quantum Genesis Q Competition, committing up to $215 million to build quantum machines capable of marking a turning point for quantum computing with long-term consequences for Bitcoin. The competition targets private companies to demonstrate 'scientifically relevant' fault-tolerant quantum computers with at least 100 logical qubits and hundreds of millions of reliable operations, with deployment targeted by 2028. As reported by The Block, today's quantum computers are still far from perfection, with errors quickly ruining long calculations, but fault tolerance uses error correction to keep those calculations running reliably, making the technology far more useful for serious science.
Google has outlined a 2029 migration plan for post-quantum cryptography, raising fresh concerns about future risks to Bitcoin and Ethereum network security. The company published its timeline in a blog post Wednesday, citing two primary threats that quantum computers will pose to current cryptographic standards. The first threat involves 'store-now-decrypt-later' attacks, where adversaries harvest encrypted data today with plans to crack it once quantum hardware matures. The second threat involves quantum computers' future ability to break digital signatures used in authentication - a mechanism central to cryptocurrency security. As reported by Google, the company stated that quantum computers will pose a 'significant threat' to current cryptographic standards, specifically targeting encryption and digital signatures.
Bitcoin uses elliptic-curve cryptography to prove who can spend coins, with a powerful enough quantum computer running Shor's algorithm potentially working backwards from a public key to recover the private key. Google researchers said breaking the 256-bit elliptic-curve system used by Bitcoin could require roughly 1,200 to 1,450 logical qubits, depending on the design. The DOE competition targets a minimum of 100 logical qubits, which would still show that large, error-corrected quantum computations can work at a meaningful scale. Glassnode calculated in May that about 6.04 million BTC, or 30.2% of issued supply, already sat in outputs where the public key was visible on-chain, offering the clearest targets once quantum key-breaking becomes practical.
Ledger CTO Charles Guillemet says Bitcoin faces a migration challenge, not an immediate quantum crisis, warning that migration research, software implementation, hardware-wallet changes and user adoption could take years. In a technical analysis published by Ledger, Guillemet stated 'Bitcoin does not have a quantum computer problem today,' while emphasizing that no cryptographically relevant quantum computer capable of breaking Bitcoin's current signatures is known to exist. He divided the transition into three problems: selecting a post-quantum signature scheme, adapting Bitcoin wallets and protocol infrastructure to that scheme, and deciding how existing BTC should move to quantum-resistant outputs. Guillemet described reaching social agreement over vulnerable legacy coins as one of the harder unresolved questions, with migration unable to be judged solely by the cryptographic strength of a replacement scheme because wallets, hardware devices, backup systems and multi-device setups must implement it safely.
The CLARITY Act fell 11 votes short of the 60 needed to advance, with the Senate voting 49-50 on the motion to invoke cloture. According to Strategy Executive Chairman Michael Saylor, this failure could actually benefit Bitcoin by forcing regulators to proceed under existing law without waiting for congressional action. 'With CLARITY stalled, I expect the SEC, CFTC, and Treasury to advance rules under existing law,' Saylor wrote in an X post. He expects banks could expand Bitcoin custody services and offer additional loans backed by the asset, creating new channels for capital to enter the market. The bill had previously passed the House by 294-134 in July 2025 and cleared the Senate Banking Committee by 15-9 in May 2026, but securing 60 votes on the Senate floor required bipartisan support.
Bitcoin developers are already discussing defenses through draft proposals BIP 360 and BIP 361, which outline paths to reduce public-key exposure and eventually migrate away from today's vulnerable signature schemes. Such a migration would involve wallets, exchanges, custodians, and users, potentially taking years. Bitcoin was trading at $77,106.64 at press time after experiencing a modest decline in the past 24 hours but gaining over 22% in the past month. According to AMBCrypto, the cryptocurrency is currently stuck between strong long-term buying and short-term selling pressure. The DOE competition brings fault-tolerant quantum computing closer to a real engineering target, while Bitcoin still has time based on current hardware and research estimates, though the deadline remains unknown which is why the migration debate is becoming harder to ignore.
