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AmericanFortress proposes quantum-safe crypto wallet protection without fund migration

AmericanFortress proposes quantum-safe crypto wallet protection without fund migration

podľa | júl 28, 2026 | 0 |

Blockchain security company AmericanFortress has unveiled a cryptographic scheme that it says could protect existing cryptocurrency wallets from future quantum attacks without requiring users to move funds, rotate keys or change wallet addresses.Unlike most proposed post-quantum approaches, AmericanFortress said its scheme allows existing wallet addresses to remain unchanged while adding post-quantum protection.The company published the proposal in a technical paper on the Cryptography ePrint Archive, describing the scheme as compatible with seed-based hierarchical deterministic wallets used across Bitcoin (BTC), Ethereum (ETH), Solana (SOL) and other blockchain networks that rely on elliptic curve cryptography. The paper has not yet been peer-reviewed.According to the paper, the scheme uses zero-knowledge proofs derived from a wallet’s original seed phrase instead of replacing the elliptic curve cryptography underlying existing wallets. AmericanFortress said participating nodes would verify those proofs while users continue signing transactions with their existing keys.AmericanFortress also cited a recent Bloomberg analysis estimating that up to $470 billion in Bitcoin could be vulnerable to quantum attacks if sufficiently powerful quantum computers become available.Related: Hong Kong prepares banks for quantum threats amid tokenization pushCompanies pursue different paths to post-quantum wallet securityAmericanFortress is not the only company developing post-quantum protections for cryptocurrency wallets. On Tuesday, Freedom Factory unveiled PQ1, which it describes as a post-quantum hardware wallet designed for Ethereum and other Ethereum Virtual Machine (EVM)-compatible networks.Unlike AmericanFortress’ software-based approach, PQ1 uses post-quantum cryptographic signatures generated on dedicated hardware. According to Freedom Factory, the wallet uses SPHINCS+C10 signatures and ERC-4337 smart accounts to secure transactions against future quantum attacks.Developers have increasingly focused on post-quantum cryptography because sufficiently powerful quantum computers could eventually break the elliptic-curve cryptography used to secure Bitcoin, Ethereum and many other blockchain networks. Although such computers are not yet available, several blockchain projects have already begun researching migration strategies.In recent months, a Strategy-led consortium pledged $15 million to fund Bitcoin quantum security research, the Ethereum Foundation published a proposal for migrating accounts to quantum-resistant cryptography, and Algorand outlined plans to introduce quantum-resistant accounts by 2027.Ethereum’s post-quantum roadmap. Source: Ethereum FoundationMagazine: A quantum roadmap would push Bitcoin much higher: Charles Edwards

AmericanFortress proposes quantum-safe crypto wallet protection without fund migration

AmericanFortress proposes quantum-safe crypto wallet protection without fund migration

podľa | júl 28, 2026 | 0 |

Blockchain security company AmericanFortress has unveiled a cryptographic scheme that it says could protect existing cryptocurrency wallets from future quantum attacks without requiring users to move funds, rotate keys or change wallet addresses.Unlike most proposed post-quantum approaches, AmericanFortress said its scheme allows existing wallet addresses to remain unchanged while adding post-quantum protection.The company published the proposal in a technical paper on the Cryptography ePrint Archive, describing the scheme as compatible with seed-based hierarchical deterministic wallets used across Bitcoin (BTC), Ethereum (ETH), Solana (SOL) and other blockchain networks that rely on elliptic curve cryptography. The paper has not yet been peer-reviewed.According to the paper, the scheme uses zero-knowledge proofs derived from a wallet’s original seed phrase instead of replacing the elliptic curve cryptography underlying existing wallets. AmericanFortress said participating nodes would verify those proofs while users continue signing transactions with their existing keys.AmericanFortress also cited a recent Bloomberg analysis estimating that up to $470 billion in Bitcoin could be vulnerable to quantum attacks if sufficiently powerful quantum computers become available.Related: Hong Kong prepares banks for quantum threats amid tokenization pushCompanies pursue different paths to post-quantum wallet securityAmericanFortress is not the only company developing post-quantum protections for cryptocurrency wallets. On Tuesday, Freedom Factory unveiled PQ1, which it describes as a post-quantum hardware wallet designed for Ethereum and other Ethereum Virtual Machine (EVM)-compatible networks.Unlike AmericanFortress’ software-based approach, PQ1 uses post-quantum cryptographic signatures generated on dedicated hardware. According to Freedom Factory, the wallet uses SPHINCS+C10 signatures and ERC-4337 smart accounts to secure transactions against future quantum attacks.Developers have increasingly focused on post-quantum cryptography because sufficiently powerful quantum computers could eventually break the elliptic-curve cryptography used to secure Bitcoin, Ethereum and many other blockchain networks. Although such computers are not yet available, several blockchain projects have already begun researching migration strategies.In recent months, a Strategy-led consortium pledged $15 million to fund Bitcoin quantum security research, the Ethereum Foundation published a proposal for migrating accounts to quantum-resistant cryptography, and Algorand outlined plans to introduce quantum-resistant accounts by 2027.Ethereum’s post-quantum roadmap. Source: Ethereum FoundationMagazine: A quantum roadmap would push Bitcoin much higher: Charles Edwards

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Bitcoin lows pierce $63K as Asia chip-stock crash spreads to Wall Street

Bitcoin lows pierce $63K as Asia chip-stock crash spreads to Wall Street

podľa | júl 28, 2026 | 0 |

Bitcoin (BTC) hit ten-day lows at Tuesday’s Wall Street open as BTC price action followed a US stocks sell-off.Key points:Bitcoin price action reacts to contagion from an Asia stocks sell-off as it hits US markets.Chip makers are at the epicenter of the reversal with South Korea’s KOSPI Index closing the day down 10.8%Crypto long liquidations pass $500 million in 24 hours.Semiconductor giants fuel major Asia stock comedownSemiconductor-led losses from Asia spilled over into US trading. South Korea’s KOSPI Index finished the day down 10.8% in a single session, fueled by 14.8% losses for chip-maker SK Hynix, while Japan’s memory manufacturer Kioxia Holdings fell 18.3% on the day.In the US, the tech-heavy Nasdaq Composite Index was down just over 1% at the time of writing. Notably, semiconductor manufacturer Micron Technologies, which fell by more than 10% at the open, erased a rebound and saw its lowest levels since May 22.Micron Technologies one-week chart. Source: Cointelegraph/TradingViewSemiconductor stocks are contending with intensifying scrutiny over the sustainability of hyperscaler capital expenditure. Investors increasingly question whether the underlying economics of AI infrastructure buildouts can justify their scale. Combined 2026 capex guidance from Alphabet, Microsoft, Amazon, and Meta is now tracking toward $725–730 billion, with Wall Street projecting that figure could climb toward $900 billion in 2027. Alphabet posted its first cash burn on record in the second quarter, at $5.9 billion, even as its cloud unit posted 82% growth.Layered on top of the financing concerns are competitive pressures on US-based AI companies from Chinese startups. Moonshot AI’s Kimi K3 open source model, first launched two weeks ago, was benchmarked competitively against top proprietary systems from Anthropic and OpenAI. This has intensified questions about the return profile assumed by the spending commitments of Western hyperscalers, given their capabilities may be replicated at a fraction of the cost.Crypto short liquidations pass $500 millionToday’s sell-off in the semiconductor and AI sector has not left Bitcoin unscathed. Data from TradingView showed BTC/USD dipping below $63,000 for the first time since July 17.BTC/USD four-hour chart. Source: Cointelegraph/TradingViewCrypto markets saw elevated long liquidations on the back of the day’s reversal, with data from CoinGlass putting these in excess of $510 million over 24 hours.Related: Markets eye Bank of Japan meeting on Friday as yen repeats 40-year US dollar lowsCryptocurrency liquidation history (screenshot). Source: CoinGlassOn Monday, crypto analytics platform CoinAnk warned of the risk of a long liquidation “cascade” below $64,700.“Extremely large long liquidity has accumulated below this level,” it commented.CoinAnk added that to the upside, little resistance remained, with the area between $65,800 and $66,200 being a “major short liquidation zone.”

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