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Quantum Computing Threat: Could Q-Day Crash Bitcoin (BTC) and Ethereum (ETH) by 2025? Market Analysis and Regulatory Update | Flash News Detail | Blockchain.News
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7/7/2025 12:55:00 PM

Quantum Computing Threat: Could Q-Day Crash Bitcoin (BTC) and Ethereum (ETH) by 2025? Market Analysis and Regulatory Update

Quantum Computing Threat: Could Q-Day Crash Bitcoin (BTC) and Ethereum (ETH) by 2025? Market Analysis and Regulatory Update

According to @AltcoinGordon, the cryptocurrency market faces an imminent existential threat from quantum computing, known as 'Q-Day,' which could render current blockchain encryption obsolete. Experts like Jay Gambetta of IBM Quantum warn that malicious actors are already engaging in 'Harvest Now, Decrypt Later' attacks, storing encrypted data to break with future quantum computers. This risk is now being acknowledged by major institutions, with BlackRock including quantum computing as a critical risk in its Bitcoin ETF filing. Researchers estimate that 4 million Bitcoin (BTC), or 25% of the usable supply, are vulnerable. Ethereum (ETH) is also at risk, prompting co-founder Vitalik Buterin to propose emergency hard-fork solutions. Some experts, like Tilo Kunz of Quantum Defen5e, suggest Q-Day could arrive as soon as 2025. In response, solutions like the Quranium QSafe Wallet are emerging, utilizing post-quantum cryptography. This threat looms over a market already experiencing volatility, with BTC and ETH prices recently dipping due to geopolitical tensions. However, Charmaine Tam of Hex Trust notes that ETH's recent outperformance over BTC could be a leading indicator for a broader altcoin rally. Concurrently, regulatory pressure is increasing globally, as seen with Singapore's Monetary Authority (MAS) tightening rules on offshore crypto firms, a move likely influenced by the collapses of Singapore-domiciled entities like Three Arrows Capital and Terraform Labs.

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Analysis

The cryptocurrency market is facing a silent but existential threat that dwarfs daily price volatility: the dawn of quantum computing. This isn't a distant, theoretical event. Known as 'Q-Day,' it represents the moment a quantum computer becomes powerful enough to shatter the cryptographic standards that secure not just Bitcoin (BTC) and Ethereum (ETH) wallets, but the entire global digital infrastructure. While today's supercomputers would need eons to crack modern encryption, a functional quantum computer could compromise secure systems in a matter of hours. The urgency is palpable, as malicious actors are already engaging in 'Harvest Now, Decrypt Later' (HNDL) attacks. They are siphoning and storing vast amounts of encrypted data today, betting on future quantum capabilities to unlock it all.

The Imminent Threat to Crypto's Foundations

The danger is so significant that in May 2025, BlackRock, the world's largest asset manager, explicitly added quantum computing as a major risk factor in its Bitcoin ETF filing. The filing warned that quantum advancements could fundamentally "undermine the viability" of the cryptographic algorithms underpinning digital assets. This isn't hyperbole. Researchers estimate that approximately 4 million BTC, or about 25% of the usable supply, reside in addresses vulnerable to quantum attacks due to their use of older, less secure public key formats. Bitcoin, Ethereum, and the majority of blockchains rely on Elliptic Curve Cryptography (ECC), a system that quantum computers are particularly adept at breaking. As Jay Gambetta, Vice President of IBM Quantum, has stated, "The quantum threat isn't coming—it's here. Nation-states are harvesting encrypted data TODAY, betting they'll decrypt it tomorrow."

Migration to Quantum Resistance is a Race Against Time

The industry is slowly waking up to this reality. Ethereum co-founder Vitalik Buterin has already outlined potential emergency hard-fork scenarios to transition the network to a quantum-resistant state if a threat becomes imminent. However, such a move would be monumental. Researchers at the University of Kent project that upgrading Bitcoin to a post-quantum system could require 75 days of network downtime, a catastrophic prospect for a trillion-dollar asset. In response, projects are emerging to address this vulnerability head-on. Quranium, a quantum-secure Layer 1 blockchain, recently launched its QSafe Wallet, which utilizes post-quantum cryptographic algorithms like SLHDSA and ML-KEM, both selected by the U.S. National Institute of Standards and Technology (NIST). According to a December 2023 Reuters report, Tilo Kunz of cybersecurity firm Quantum Defen5e warned officials that Q-Day could arrive as soon as 2025, making the immediate migration to post-quantum standards a critical priority for the entire digital asset ecosystem.

Asia Markets Reel from Geopolitical Shockwaves

While the quantum threat brews in the background, immediate geopolitical events are dictating short-term market movements. As the Asian trading day began on Friday, the crypto market saw a significant downturn following reports of Israeli military strikes on Iranian nuclear facilities. This risk-off event sent Bitcoin and Ethereum prices tumbling as traders sought the safety of traditional havens like gold, which surged on the news. The Nikkei 225 in Japan fell over 1.2%, reflecting the broader market anxiety that quickly spilled over into digital assets. This volatility underscores the crypto market's increasing correlation with macroeconomic and geopolitical events, forcing traders to balance long-term technological risks with immediate, real-world conflicts.

Despite the recent dip, Ethereum has shown notable strength over the past quarter, outperforming Bitcoin. According to Charmaine Tam, Head of OTC at Hex Trust, ETH's rally is significant as it often serves as a leading indicator for capital flowing into the broader altcoin market. As investors grow more comfortable moving beyond Bitcoin, assets with strong narratives in sectors like DeFi, modular infrastructure, and decentralized AI are benefiting. This trend is supported by on-chain data showing strong inflows into projects like Pendle and Bittensor, coupled with rising activity on Ethereum Layer 2 solutions. The sustained institutional interest in spot ETH ETFs, which have attracted over a billion dollars since mid-May, provides a solid foundation for a potential altcoin rally, assuming market stability returns.

Gordon

@AltcoinGordon

From $0 to Crypto multi millionaire in 3 years

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