According to @caprioleio, the US Dept of War has raised the alarm that a potential 'Q-Day' could arrive within three years, arguing BTC will not reach $1M per coin unless the quantum threat is addressed (source: @caprioleio on X, Oct 8, 2025). Bitcoin relies on ECDSA (secp256k1) for transaction signatures, which are theoretically breakable by sufficiently powerful quantum computers via Shor’s algorithm, making quantum security a systemic consideration for BTC (source: Bitcoin.org Developer Documentation; NIST Post-Quantum Cryptography program). U.S. standards bodies have already moved to mitigate such risks, with NIST publishing post-quantum cryptography standards in 2024 and the NSA’s CNSA 2.0 guidance setting migration timelines for national security systems, providing objective checkpoints for security transition risk (source: NIST 2024 PQC standards; NSA CNSA 2.0 guidance). For trading, monitor official NIST/NSA releases and any Bitcoin Core proposals on post-quantum signatures, as policy or development milestones can reprioritize BTC risk premia and hedging demand in derivatives markets (source: @caprioleio; NIST; NSA).

According to @caprioleio, McKinsey’s Quantum Monitor 2025 indicates quantum computing industry revenues are set to surpass $1 billion in 2025 with annual growth above 40% and $54 billion in global commitments, underscoring accelerating timelines that crypto markets must track for security risk pricing. Source: McKinsey Quantum Monitor 2025; @caprioleio. @caprioleio highlights a 4–5 year path to multi-thousand logical qubits and frames a Q-Day window of 2–10 years, asserting this scale would be sufficient to threaten Bitcoin’s ECC-based security. Source: @caprioleio. Bitcoin relies on ECDSA over secp256k1, and sufficiently large fault-tolerant quantum computers running Shor’s algorithm can compute elliptic-curve discrete logarithms, enabling private-key recovery from public keys in principle. Source: NIST Post-Quantum Cryptography (2024) overview; NIST Computer Security Resource Center. Academic resource estimates suggest low-thousands logical qubits are in the ballpark needed to attack 256-bit ECC, aligning with the risk threshold cited by the author. Source: Roetteler, Naehrig, Svore, Lauter (Microsoft Research, 2017); Gidney and Ekerå (2019, Quantum). If ECC were broken, UTXOs that reveal public keys (e.g., address reuse or legacy pay-to-pubkey outputs) are first at risk, which is directly relevant for assessing BTC key-exposure on-chain. Source: Bitcoin Wiki – Address reuse; Bitcoin protocol documentation. NIST finalized initial post-quantum cryptography standards in 2024 (including CRYSTALS-Kyber and CRYSTALS-Dilithium), providing a migration path that security-focused market participants can monitor against the author’s Q-Day window. Source: NIST PQC standards announcement 2024; NIST CSRC.

According to @caprioleio, Satoshi’s early coins will be market dumped and quantum computing could break Bitcoin within 2-8 years, prompting a call to upgrade Bitcoin now and an invitation to his Token2049 talk at 10:45am on Wed Oct 1, 2025 (source: Charles Edwards X post dated Sep 26, 2025). The post offers no technical evidence for the timeline, but the claim presents headline risk that can affect BTC via narrative-driven volatility and renewed attention to on-chain monitoring of Satoshi-era UTXOs (source: Charles Edwards X post dated Sep 26, 2025). Traders can watch for unusual activity from early addresses, shifts in BTC options implied volatility and skew, and developer signals on post-quantum upgrade discussions as potential catalysts if this narrative gains traction (source: trading analysis based on Charles Edwards X post dated Sep 26, 2025).

According to @caprioleio, the quantum computing risk to Bitcoin is becoming an imminent threat and the industry is widely misunderstood, source: @caprioleio on X, Sep 26, 2025. He stated he will explain the details and what you can do at Token2049 at 10:45 on October 1, source: @caprioleio on X, Sep 26, 2025. The warning specifically highlights Bitcoin BTC security risk as the focus, source: @caprioleio on X, Sep 26, 2025.

According to Reuters Business, Britain and the United States agreed to a technology pact to boost ties in artificial intelligence, quantum computing, and civil nuclear energy with an estimated value of $42 billion (source: Reuters Business). The announcement did not specify timelines, company-level beneficiaries, or any provisions related to cryptocurrencies or digital assets (source: Reuters Business). From a trading perspective, the headline size and sector focus highlight policy-driven themes to monitor in UK- and US-listed AI, quantum, and civil nuclear equities, while no direct crypto-market impact was indicated in the source post (source: Reuters Business).

According to Charles Edwards (@caprioleio), quantum computing is Bitcoin’s biggest existential threat and, once a replacement is selected, the ecosystem would have roughly 12 months to migrate, placing urgency on protocol choices that traders should monitor; source: Charles Edwards on X, Aug 21, 2025. Bitcoin relies on ECDSA over secp256k1 for transaction signatures, which is vulnerable to sufficiently powerful quantum attacks such as Shor’s algorithm, making signature replacement the core mitigation; source: NIST Post-Quantum Cryptography program and Bitcoin.org Developer Guide. NIST has standardized post-quantum signature schemes including CRYSTALS-Dilithium and SPHINCS+, offering candidate pathways for migration that Bitcoin developers could evaluate; source: NIST Post-Quantum Cryptography standards 2022–2024. Traders should watch for any Bitcoin Improvement Proposal introducing post-quantum signatures and activation timelines, as protocol changes require broad consensus and staged rollout; source: Bitcoin Improvement Proposals repository. Coins reveal public keys when spent, so UTXOs with exposed public keys carry higher quantum-theft risk under a breakthrough, informing on-chain risk assessment; source: Bitcoin.org Developer Guide and Bitcoin Wiki.

According to @stocktalkweekly, Rosenblatt has initiated coverage on IonQ (IONQ) with a Buy rating and a 12-month price target of $70. The firm highlights IonQ as an attractive entry point for investors seeking exposure to the rapidly growing quantum computing sector. This bullish outlook may influence both tech and crypto markets, as advancements in quantum computing could drive further blockchain innovation and impact cryptocurrency security protocols (source: @stocktalkweekly).

According to BitMEX Research, the Bitcoin (BTC) Lightning Network faces significant security risks from future quantum computers, which could break its underlying ECDSA cryptography. The research outlines a detailed proposal for making Lightning Network transactions quantum-resistant by implementing post-quantum cryptography (PQC) standards, such as a one-time signature scheme. While this proposed upgrade could lead to larger transaction sizes and increased complexity, BitMEX Research emphasizes that it is a crucial measure to safeguard the long-term security of funds transacted on Bitcoin's primary layer-2 scaling solution.

According to @BitMEXResearch, Lamport signatures, a type of hash-based digital signature scheme, are presented as a simple and viable solution for making Bitcoin (BTC) quantum-safe. The research suggests that while there is no concrete evidence of an imminent threat to Bitcoin from quantum computing, the first step towards mitigation is to provide users with the option to spend their BTC using quantum-safe methods. @BitMEXResearch posits that the level of user adoption for such features will be the primary driver for any subsequent developments in securing the network against future quantum risks.

According to @BitMEXResearch, a potential strategy to mitigate the risks posed by quantum computing to cryptocurrencies like Bitcoin (BTC) involves a three-step, ordered approach. The first step proposed is the creation of a new quantum-resistant spend type within the network, as cited in the post. Following this, if these new quantum-resistant spends gain significant popularity, the second step would be to consider banning new transactions to older, quantum-vulnerable addresses after a substantial grace period. The final step outlined by @BitMEXResearch is to implement a quantum-safe signature scheme for all new Unspent Transaction Outputs (UTXOs), securing future transactions against potential quantum threats.

According to @AltcoinGordon, a recent $8 billion Bitcoin (BTC) transfer by a Satoshi-era whale is likely a wallet security upgrade rather than a market sale, as suggested by on-chain analytics firm Arkham. The funds were moved from legacy addresses to more secure and efficient native SegWit bc1q-style addresses, and Arkham reports the BTC remains untouched. Ledger CTO Charles Guillemet noted that legal notices sent via OP_RETURN messages to the old wallets may have prompted the owner to move the funds as a precautionary measure. This event highlights the growing importance of wallet security, which is further underscored by the imminent threat of quantum computing, or 'Q-Day'. Experts like IBM Quantum's Jay Gambetta warn that 'Harvest Now, Decrypt Later' attacks are already underway. The crypto market faces significant risk, with researchers estimating 4 million BTC are vulnerable, and BlackRock has officially listed quantum computing as a risk in its Bitcoin ETF filing. Ethereum co-founder Vitalik Buterin has already proposed emergency hard-forks to address this cryptographic threat, but researchers at the University of Kent warn such an upgrade could lead to 75 days of downtime for the Bitcoin network, posing a major risk to the asset class.

According to Eric Balchunas, the advent of quantum computing, or 'Q-Day,' presents a catastrophic and immediate threat to the entire cryptocurrency market, including Bitcoin (BTC) and Ethereum (ETH). The core risk stems from 'Harvest Now, Decrypt Later' attacks, where, as IBM Quantum's Vice President Jay Gambetta warns, nation-states are already collecting encrypted data to be broken by future quantum computers. This risk is so significant that BlackRock, in its Bitcoin ETF filing, cited quantum advances as a critical threat that could 'undermine the viability' of current cryptographic standards. Researchers estimate that 4 million Bitcoin, or 25% of the usable supply, are vulnerable. For Ethereum, co-founder Vitalik Buterin has already proposed emergency hard-forks, which could lead to prolonged network downtime. While some predict Q-Day is 5-7 years away, a Reuters report cites Tilo Kunz of Quantum Defen5e suggesting it could be as early as 2025. The article concludes that for traders and investors, the only path forward is an urgent migration to post-quantum cryptography, as existing digital assets without such security could become worthless.

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.

According to @AltcoinGordon, the cryptocurrency market faces an existential threat from quantum computing, known as "Q-Day," which could render current encryption obsolete. Experts like Jay Gambetta from IBM Quantum warn that malicious actors are already conducting "Harvest Now, Decrypt Later" attacks, stockpiling encrypted data to be broken by future quantum computers. The risk is so significant that BlackRock included it in its Bitcoin ETF filing, with researchers estimating 4 million BTC are vulnerable. In response, Ethereum co-founder Vitalik Buterin has proposed emergency hard-fork solutions for ETH. Buterin also cautioned that the entire ecosystem is at an "inflection point," where projects must prove their decentralization or fail. Amid these security concerns, key ecosystem developments are unfolding: the Bitcoin Layer-2 network Botanix has launched its EVM-compatible mainnet with 5-second block times, and Ripple's XRP Ledger has deployed its EVM sidechain, using XRP as the gas token to enhance interoperability. Furthermore, institutional adoption is growing, with Robinhood building its own Arbitrum-based Layer-2 for tokenized assets and Deutsche Bank planning a crypto custody service.

According to @_RichardTeng, the threat of 'Q-Day'—the point at which quantum computers can break current encryption—is an immediate crisis for the cryptocurrency market, not a future problem. Malicious actors are already engaging in 'Harvest Now, Decrypt Later' attacks, storing encrypted data to be broken by future quantum computers, a warning echoed by IBM Quantum's Jay Gambetta. This systemic risk is so significant that BlackRock cited quantum computing as a critical risk in its Bitcoin (BTC) ETF filing, stating it could 'undermine the viability' of cryptographic algorithms. Researchers warn that approximately 4 million BTC, or 25% of the usable supply, are vulnerable. Ethereum (ETH) is also exposed, with co-founder Vitalik Buterin having proposed emergency hard-forks that could pause the network for years. With some experts like Tilo Kunz suggesting Q-Day could arrive as soon as 2025, the article stresses that the only solution is an urgent migration to post-quantum cryptography, a process that itself could cause massive network downtime and market disruption.

According to @KookCapitalLLC, the cryptocurrency market faces a significant long-term threat from quantum computing, which could render current encryption obsolete. Researchers warn that approximately 4 million Bitcoin (BTC), or 25% of the usable supply, are vulnerable to being stolen once quantum computers are powerful enough, a risk factor now included in BlackRock's Bitcoin ETF filing. The analysis suggests "Harvest Now, Decrypt Later" attacks are already underway, with some experts cited in a Reuters report warning that a cryptographically relevant quantum computer could arrive as soon as 2025, making migration to post-quantum cryptography urgent. In more immediate market events, the Polyhedra (ZKJ) token plummeted over 80% following what the team described as a coordinated liquidity attack on PancakeSwap. The Polyhedra team responded by injecting approximately $30 million in USDT, USDC, and BNB to stabilize liquidity and has announced a buyback plan to restore investor confidence. Other notable developments include JPMorgan piloting a permissioned USD deposit token (JPMD) on the Base network and the U.S. Senate passing a bipartisan stablecoin bill, signaling growing institutional and regulatory engagement with the crypto sector.

According to @AltcoinGordon, the cryptocurrency market faces an imminent existential threat from quantum computing, known as 'Q-Day,' which could break the encryption securing assets like Bitcoin (BTC) and Ethereum (ETH). Researchers warn that approximately 4 million BTC are vulnerable, a risk now cited in BlackRock's Bitcoin ETF filing. The 'Harvest Now, Decrypt Later' strategy, where malicious actors are currently storing encrypted data for future decryption, is a present danger highlighted by IBM Quantum's Jay Gambetta. In response, Project Eleven has raised $6 million in a round co-led by Variant Fund and Quantonation to build defenses. The company is launching 'Yellowpages,' a post-quantum cryptographic registry that allows users to create a verifiable link between their existing BTC address and a new quantum-resistant key without requiring a contentious network hard fork. This approach contrasts with proposals like QRAMP, offering a potentially faster, consensus-free path to security as experts like Tilo Kunz warn Q-Day could arrive as soon as 2025, making proactive measures critical for traders and investors.

According to @Ultra_Calls, the cryptocurrency market faces a significant long-term threat from quantum computing, or 'Q-Day', which could render current encryption for assets like Bitcoin (BTC) and Ethereum (ETH) obsolete. The report highlights that BlackRock has added quantum computing as a critical risk in its Bitcoin ETF filing, and researchers warn that up to 4 million BTC could be vulnerable. This risk is amplified by 'Harvest Now, Decrypt Later' attacks, where encrypted data is being stored by malicious actors for future decryption. In the more immediate term, markets are reacting to geopolitical tensions, with major cryptocurrencies experiencing a downturn. However, analysis from Charmaine Tam of Hex Trust suggests that Ethereum's (ETH) recent outperformance against Bitcoin (BTC) may signal a capital shift into altcoins, driven by institutional interest in spot ETH ETFs and emerging sectors like DeFi and Layer 2s. On the regulatory front, the Monetary Authority of Singapore (MAS) is tightening its grip on offshore crypto firms, a move potentially influenced by the collapses of Singapore-domiciled Three Arrows Capital and Terraform Labs. In response to the quantum threat, new solutions like Quranium's quantum-safe QSafe Wallet are emerging.

According to @AltcoinGordon, the cryptocurrency market faces a dual scenario of a long-term existential threat and a short-term trading opportunity. The primary threat is 'Q-Day,' the point where quantum computers can break current cryptographic standards, jeopardizing Bitcoin (BTC) and Ethereum (ETH). 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 in the future. This risk is so significant that BlackRock added quantum computing as a critical risk to its Bitcoin ETF filing, and researchers estimate 4 million BTC could be vulnerable. In response, Ethereum's Vitalik Buterin has proposed emergency hard-fork solutions. Concurrently, the market is experiencing a 'summer lull' with Bitcoin's volatility trending lower despite trading at new highs over $100,000, as noted by NYDIG Research. This low-volatility environment makes options trading relatively inexpensive. NYDIG suggests this presents a cost-effective opportunity for traders to use calls for upside exposure and puts for downside protection to position for directional moves ahead of anticipated market-moving events.

According to @phantom, the crypto market faces an existential threat from quantum computing, known as 'Q-Day,' which could render current encryption obsolete. The risk is immediate due to 'Harvest Now, Decrypt Later' attacks, where malicious actors are already storing encrypted data from blockchains to crack later, a warning echoed by Jay Gambetta of IBM Quantum. This threat has prompted major financial players like BlackRock to include quantum computing as a critical risk in its Bitcoin ETF filing, noting it could undermine the viability of cryptographic algorithms. Researchers warn that as much as 4 million Bitcoin (BTC), or 25% of the usable supply, is vulnerable to theft, which could trigger a catastrophic price collapse. For Ethereum (ETH), co-founder Vitalik Buterin has proposed emergency hard-forks, but an upgrade to post-quantum cryptography could lead to extensive network downtime—potentially 75 days for Bitcoin, according to University of Kent researchers. For traders, this implies that any digital assets not secured by post-quantum cryptography could eventually become worthless, making the migration to quantum-resistant technology a critical factor for long-term portfolio viability.