Tim Draper, a historic investor known for his strong predictions about Bitcoin, recently dismissed fears around quantum computing. According to him, traditional banks will fall victim to quantum well before blockchain. Do BTC holders really have less to fear than bankers?
In brief
- Tim Draper believes that quantum computing will target banking systems before it can threaten the Bitcoin blockchain.
- A Google Quantum AI white paper (March 2026) reduces the threshold necessary to break the ECDSA-256 encryption to less than 500,000 qubits, or 20 times less than estimated in 2019.
- BIP-360, a proposed quantum-resistant address format, is among the defense avenues currently being studied in the community.
Draper keeps faith in Bitcoin in the face of quantum
The billionaire investor doesn't mince his words. For him, if a quantum computer were to hack anything first, it would be the infrastructures of centralized banks, not the Bitcoin blockchain. He adds that the network could, as a last resort, undergo a hard fork to return to the last secure block before a possible attack.
This option remains technically possible. However, it would require a very broad consensus among miners and node operators, a scenario that is far from simple to coordinate.
Furthermore, Draper has not changed its price trajectory. At the start of 2026, he reaffirmed his target of $250,000 for Bitcoin in the next 18 months, a prediction he has been putting off since 2018.
Draper speaks from knowledge. Its relationship with Bitcoin dates back to purchases around $4, followed by a total loss during the Mt. Gox crash, then a repurchase of nearly 30,000 BTC confiscated by the US Marshals in 2014, at around $632 each. His conviction does not weaken.
The quantum threat, very real despite reassuring speeches
Yet, warning signs are piling up. In March 2026, a Google Quantum AI white paper revised the estimates downward: less than 500,000 physical qubits would now be enough to break the ECDSA-256 encryption, compared to 10 million according to 2019 projections. A reduction of a factor of 20 in seven years.
However, Project Eleven recently warned of a closing window of risk: the report mentions a probability greater than 50% that a quantum computer capable of breaking the current protections of the network will appear before 2033. Some 6.9 million BTC could become vulnerable in certain scenarios.
In response to this pressure, the Bitcoin community is moving forward with concrete solutions. BIP-360, which offers quantum-resistant address formats, concentrates part of the technical discussions. Bernstein, for his part, considers the threat framed rather than existential, estimating that a window of three to five years still allows a controlled transition.
In the end, Tim Draper expresses an oft-repeated conviction: Bitcoin is resilient, and traditional institutions remain the most fragile targets. Well-founded optimism or blind spot?
The advances of Google Quantum AI, the progress of Chinese machines like Jiuzhang 4.0, and the slow coordination of the Bitcoin ecosystem, however, outline a timetable that is tightening. The network has never faced a challenge directly affecting its cryptographic foundations. Preparing for migration is already one form of response.
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