The Stellar Development Foundation has unveiled a three-stage Quantum Preparedness Plan to shield its blockchain from future quantum attacks, while billionaire investor Tim Draper downplays the risk to Bitcoin, asserting that traditional banking systems are far more vulnerable.
Stellar’s migration roadmap, announced Tuesday, targets a post-quantum world where powerful computers could break the elliptic curve cryptography securing most digital assets. The plan leverages Stellar’s unique architecture: account identity is separate from signing keys, allowing users to upgrade to quantum-resistant algorithms without changing their wallet addresses or balances. In 2026, enterprise wallets can opt-in via smart contracts; by end-2027, a protocol upgrade will enable all accounts to add a quantum-safe signer. A later third phase will deprecate legacy cryptography entirely, with timing dependent on quantum progress and community consensus. One unresolved issue is dormant accounts whose holders are unreachable—a mass freeze would require community debate.
The urgency is underlined by shifting expert estimates. The National Institute of Standards and Technology now projects a quantum “danger zone” by 2029, and Google has set 2029 as its internal post-quantum deadline. Bitcoin and Ethereum developers are also exploring countermeasures: Bitcoin has proposals like BIP 360, while Ethereum formed a post-quantum team.
Tim Draper, an early Bitcoin adopter and venture capitalist, dismissed Bitcoin’s quantum vulnerability as less pressing. “Quantum will hack the banks long before it can touch the blockchain,” he said, calling his BTC holdings “more secure” than fiat in banks. He argued that Bitcoin could hard fork back to a secure block if needed, though he acknowledged that would require massive consensus. Draper, who famously bought confiscated BTC at a 2014 U.S. Marshals auction, reiterated his long-running $250,000 Bitcoin prediction, now targeted within 18 months.
A March 2026 Google Quantum AI paper suggests cracking ECDSA-256 may require under 500,000 physical qubits—a 20-fold reduction from earlier estimates—intensifying the race to upgrade. Stellar’s proactive move and the broader industry’s preparations reflect growing recognition that quantum computing, while still uncertain, could redefine digital asset security within a decade.
