Quantum Resistant Ledger (QRL) Addresses Quantum Threats to Blockchain Assets

• Google researchers warn that quantum computing advancements could make Bitcoin's 256-bit encryption vulnerable with fewer qubits and gates than previously estimated, potentially allowing quantum attacks to compromise stored funds or intercept transactions, especially for early wallet formats like P2PK, which are difficult to upgrade according to Google researchers.

• BTQ Technologies highlights progress in post-quantum cryptography and quantum-secure infrastructure across its core business lines, including the development of a quantum-safe Bitcoin fork and post-quantum hardware platforms to protect digital assets against quantum threats as reported.

• Google researchers estimate that 1,200–1,450 logical qubits and 70–90 million quantum gates could break Bitcoin's 256-bit encryption in minutes, executable on less than 500,000 physical qubits in minutes. These findings indicate that quantum attacks may be feasible much sooner than earlier estimates suggested.

• The largest immediate target for quantum attacks may be dormant holdings. Roughly 1.7 million Bitcoin are locked in early wallet formats known as P2PK, many of which are believed to be inaccessible due to lost keys. These assets cannot be upgraded to quantum-resistant standards and could eventually be unlocked by whoever first gains access to a cryptographically relevant quantum computer according to Google.

• Future quantum threats to Bitcoin depend on which hardware scales first, according to Google. Fast systems may allow near-instant attacks during transactions, while slower systems would initially target stored funds. Key vulnerabilities include reused addresses, older wallet types, and public key exposure during transactions, with millions of BTC already at risk.

• Google notes that while quantum computers could threaten Bitcoin's cryptography, mining itself is not immediately at risk. Quantum speedups from Grover's algorithm are limited, and conventional ASIC miners still dominate efficiency. However, sudden attacks could disrupt the network's economics.

• BTQ Technologies has advanced its QCIM division in 2025, moving from architecture and IP development toward silicon validation, engineering buildout, and commercialization planning. The company strengthened QCIM through the integration of Radical Semiconductor's CASH architecture, a memory-centric acceleration architecture designed for post-quantum cryptography.

• BTQ announced a strategic collaboration with the Industrial Technology Research Institute to validate QCIM in silicon. That initiative is focused on generating first silicon performance estimates, reducing development risk, and establishing benchmark data that can support integration planning and commercial discussions with future customers as reported.

• The Ethereum Foundation has also intensified efforts to upgrade the core infrastructure for post-quantum security, while some projects, like QRL and Abelian, were built to be quantum-resistant from the start according to analysis.

What are the potential quantum threats to Bitcoin and Ethereum?

• Google researchers warn that quantum computing advancements could significantly impact Bitcoin and Ethereum. For Bitcoin, quantum machines running Shor's algorithm could break its 256-bit encryption, with key vulnerabilities including reused addresses, older wallet types, and public key exposure during transactions. For Ethereum, smart contracts lack post-quantum cryptography, making code at-rest vulnerable, while BLS signatures in Proof-of-Stake create systemic risks if a sufficient number of validators are compromised according to research.

• Quantum computing could also impact Ethereum layer 2 networks, which rely on quantum-vulnerable KZG commitments. This could allow permanent backdoors, further exposing Ethereum to quantum threats as noted.

What solutions are being developed to protect digital assets against quantum threats?

• Projects like QRL and Abelian have been built with quantum resistance in mind. BTQ Technologies is developing hardware, software, and network solutions to protect against quantum threats to digital assets. This includes a quantum-safe Bitcoin fork and post-quantum hardware platforms according to BTQ.

• BTQ has also advanced its QCIM division to move from architecture and IP development toward silicon validation and commercialization planning as detailed. The company has also strengthened QCIM through the integration of Radical Semiconductor's CASH architecture and announced a strategic collaboration with the Industrial Technology Research Institute to validate QCIM in silicon according to company reports.

• New cryptographic approaches, including lattice- and hash-based systems, are already being tested and rolled out in select networks. Google urges the crypto community to prepare for quantum attacks early, adopt post-quantum cryptography, fix short-term vulnerabilities, and responsibly share information to protect both funds and public confidence according to Google's analysis.

What are the broader implications of quantum threats in the blockchain ecosystem?

• Quantum vulnerabilities extend far beyond Bitcoin and Ethereum, affecting forks, sidechains, privacy coins, and stablecoins according to research. Many chains still rely on ECDLP-based cryptography, leaving funds and privacy exposed, while multi-signature bridges and admin keys create additional risks. Even privacy-preserving blockchains like Zcash or Mimblewimble can face retroactive attacks, enabling past transaction exposure or inflation exploits as reported.

• Blockchain platforms are increasingly hosting tokenized real-world assets, including bonds and real estate. With market projections exceeding $16 trillion by 2030, experts warn that quantum computing threats could become a systemic risk to the financial system as a whole according to market analysis.

• Google highlights that the migration to post-quantum cryptography is one of the most complex cryptographic transitions to date. Cloud servers and browsers can adopt new algorithms through software updates, but the world now runs on mobile devices, IoT endpoints, 5G and 6G networks, data centers, and physically secure equipment in power grids and defense systems according to Google.

• BTQ is building quantum-secure infrastructure for the real world, with a platform spanning secure digital money infrastructure, post-quantum silicon and hardware acceleration, fault-tolerant quantum software and control systems, and quantum-safe blockchain infrastructure as detailed.