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Bitcoin quantum security concerns

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2026-07-26 13:34 UTC → 2026-07-26 22:12 UTC · added removed

Early July 2026 analysts noted that 6.5‑6.9 million BTC remain in legacy address types with on‑chain public keys, making them theoretically vulnerable to a future quantum computer. A surge in micro‑transactions driven by runes, ordinals and BRC‑20 tokens pushed daily volumes above 800 000, increasing mempool pressure and prompting calls for post‑quantum upgrades. By late July, attention turned to geopolitical risk. Experts warned the United States could leverage quantum computing to compromise Bitcoin’s elliptic‑curve signatures, urging rapid adoption of quantum‑resistant safeguards. MicroStrategy announced a $1.25 billion Digital Credit Capital Framework, authorising the sale of up to that amount of Bitcoin to repair its balance sheet after a $14 billion unrealised loss; an initial sale of 32 BTC raised about $2.5 million and lifted its share price. On 25 July, analyst Nic Carter echoed the U.S. threat narrative, stressing that a quantum‑enabled adversary could seize private keys or disrupt the network if Bitcoin’s scale challenges the global financial system, and reinforced the need for swift post‑quantum migration. The following day, Coinbase CEO Brian Armstrong said a quantum break‑in is not imminent but announced the formation of a Bitcoin Security Consortium – backed by Coinbase, BlackRock, Fidelity Digital Assets, Block, Blockstream major custodians and others miners – to coordinate long‑term security work. Coinbase also work, and unveiled a post‑quantum roadmap including a quantum‑resistant key‑management system (PQ‑CoreKMS) and scheduled working sessions aligned with Bitcoin Core developers and cryptographers, noting that NIST has already standardized post‑quantum NIST‑standardised algorithms. Together, these developments track a growing consensus On 26 July, Cardano co‑founder Charles Hoskinson warned that technical vulnerability, rising transaction load, U.S. strategic considerations, corporate liquidity moves, and coordinated industry actions are converging on the need for Bitcoin Bitcoin’s informal, multi‑party governance model may be too slow to adopt implement the urgent quantum‑resistant cryptography. upgrade, risking the network’s leadership position. He contrasted Bitcoin’s consensus‑driven process with Cardano’s on‑chain voting mechanism, which he says can enact hard‑forks like v11 swiftly. Hoskinson also cited recent bridge attacks and broader crypto‑security concerns, urging adoption of zero‑knowledge technologies and decentralized insurance to bolster resilience.

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  1. 2026-07-26 22:12 UTC Bitcoin quantum security concerns
  2. 2026-07-26 13:34 UTC Bitcoin quantum security concerns

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