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chainalysis.com
article
https://www.chainalysis.com/blog/quantum-computing-crypto-security/
While these developments don’t pose an immediate threat to crypto security, they signal a clear trend: quantum computing is evolving faster than many anticipated, and the crypto industry must address both the challenges and opportunities this presents. According to Project Eleven, a company working on quantum securing crypto currency, and advised by Chainalysis’ former CEO Michael Grønager, approximately $718 billion worth of bitcoin is currently held in addresses that would be vulnerable to quantum attacks, including early Pay-to-Public-Key addresses where public keys are already exposed on the blockchain. Based on our analysis of current quantum computing capabilities, significant technical hurdles remain before quantum computers pose a direct threat to the security and integrity of cryptocurrency networks. Blockchain analytics providers, including Chainalysis, are preparing to support quantum-resistant address formats and transaction types to ensure continuity of compliance and quantum security monitoring capabilities. While quantum computing poses future challenges for cryptocurrency security, the industry has time to prepare. The industry is actively developing post-quantum cryptography to secure blockchain networks.
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onekey.so
article
https://onekey.so/blog/ecosystem/crypto-and-quantum-computing-is-it-a-threat/…
# Crypto And Quantum Computing – Is it a Threat? Crypto And Quantum Computing – Is it a Threat? • Quantum computing poses a significant threat to current cryptographic algorithms used in blockchain. This leap in computing power means that *many cryptographic algorithms currently used to secure blockchain networks, such as RSA and elliptic curve cryptography (ECC), are fundamentally vulnerable* to quantum attacks. **Stay informed on security updates**: Monitor wallet providers and blockchain communities for developments on quantum resistance and cryptography upgrades. As the sector shifts toward quantum-resistant cryptography, users of agile, security-focused hardware wallets like OneKey will be better equipped to benefit from new protections and standards. Whether you’re a casual holder or a seasoned developer, understanding the quantum threat and equipping yourself with upgradable, transparent solutions like OneKey is essential for future-proof digital asset management. Explore more about quantum computing and its impact on cryptography in the Halborn Blockchain Security Overview.
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deloitte.com
article
https://www.deloitte.com/nl/en/services/consulting-risk/perspectives/quantum-…
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sciencedirect.com
article
https://www.sciencedirect.com/science/article/pii/S2590005621000138
## Array. Volume 10, July 2021, 100065. # Vulnerability of blockchain technologies to quantum attacks. Author links open overlay panel,. https://doi.org/10.1016/j.array.2021.100065Get rights and content. Under a Creative Commons license. ## Abstract. Quantum computation represents a threat to many cryptographic protocols in operation today. It has been estimated that by 2035, there will exist a quantum computer capable of breaking the vital cryptographic scheme RSA2048. Blockchain technologies rely on cryptographic protocols for many of their essential sub-routines. Some of these protocols, but not all, are open to quantum attacks. Here we analyze the major blockchain-based cryptocurrencies deployed today—including Bitcoin, Ethereum, Litecoin and ZCash, and determine their risk exposure to quantum attacks. We finish with a comparative analysis of the studied cryptocurrencies and their underlying blockchain technologies and their relative levels of vulnerability to quantum attacks. ## Keywords. ## Cited by (0).
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river.com
article
https://river.com/learn/will-quantum-computing-break-bitcoin/
Bitcoin supports various address types, each with varying levels of future vulnerability to quantum computing. Quantum computing could impact Bitcoin wallets in the future by deriving private keys from public keys, and can be divided into two types of attacks: A “long range” attack affects only wallets with exposed public keys, while a “short range” attack would target all current wallet types. A chart depicting the number of bitcoin vulnerable to a long-range quantum computing attack. A chart depicting the number of bitcoin vulnerable to a long-range quantum computing attack. However, if your wallet has reused its address or uses the P2TR address type, you can protect your funds from a potential long-range quantum attack by migrating your bitcoin to a new wallet that does not reuse addresses. If Bitcoiners want to protect themselves against the long-term risks of quantum computing, then it is likely that a soft fork will be required to add a quantum-resistant signature algorithm.
J
jbs.cam.ac.uk
article
https://www.jbs.cam.ac.uk/2025/why-quantum-matters-now-for-blockchain/
Preparing blockchain ecosystems for post-quantum cryptography (PQC) requires carefully coordinated upgrades in protocols, software and governance. Figure 2 maps the current state of quantum computing hardware against the estimated requirements for breaking blockchain cryptography, showing where we are today relative to the threat threshold. Lower error rates dramatically extend feasible computation time, which matters because attacking blockchain cryptography via Shor’s algorithm requires a long sequence of quantum operations. We at the Cambridge Centre for Alternative Finance analysed blockchain code on GitHub, examining 879 repositories across major blockchain ecosystems for cryptography use and quantum-resistant techniques. Figure 4 visualises the gap between blockchain repositories using cryptography and those implementing post-quantum algorithms. This trajectory matters more than current exposure: while banks have minimal operational exposure to public blockchains today, the rapid adoption of tokenised assets on quantum-vulnerable networks like Ethereum and Bitcoin creates future risk. Just as banks undergo stress tests, financial infrastructures leveraging blockchain technology should be expected to have concrete quantum transition plans, and new systems like central bank digital currencies (CBDCs) should adopt PQC from the outset.
Y
youtube.com
video
https://www.youtube.com/watch?v=Ql_4U-HhkP4
... implications: ECDSA signatures and SHA‑256 — what could change and ... Go to channel Tech Alert Network · The Law Enforcement Backdoor
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reddit.com
article
https://www.reddit.com/r/QuantumComputing/comments/18f2bfx/why_people_throw_m…
While encryption can be updated to be 'quantum safe' cryptos are really exposed and, afaik, there is no crypto or blockchain that is really quantum ready.