Bitcoin Quantum-Safe Proposal Emerges Without Protocol Upgrade, But Costs $75-$150 Per Transaction

VADODARA, April 10, 2026. The following report is based on currently available verified source material and market data.

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Data Summary

The proposal, detailed by StarkWare chief product officer Avihu Levy, introduces a Quantum Safe Bitcoin (QSB) transaction scheme that operates within existing Bitcoin script constraints. Key metrics include transaction costs ranging from $75 to $150 per transaction, sourced from public statements, and current Bitcoin market data showing a price of $71,925 with a 24-hour trend of 1.43%, according to CoinGecko. The scheme replaces proof-of-work signature puzzles with a hash-to-sig puzzle, requiring brute-force computing that even quantum computers cannot shortcut, but this comes at a high computational expense.

Why It Matters

Why now? The timing is critical as Google published a paper in March suggesting quantum computers could crack Bitcoin's cryptography with fewer resources than previously thought, heightening urgency. Who benefits? Large institutional holders and whales securing high-value transactions stand to gain, while everyday users face prohibitive costs. Time horizons: Short-term, this offers a stopgap for securing large transfers; long-term, protocol-level changes remain preferred. Causal chain: The proposal provides an immediate quantum-safe option → reduces vulnerability for big players → but high costs limit adoption → delaying broader security upgrades.

Mechanism Breakdown

The QSB scheme works by replacing elliptic curve math, which quantum computers can break using Shor's algorithm, with a hash-to-sig puzzle. Spenders must find an input whose hash output randomly resembles a valid ECDSA signature, a process requiring brute-force GPU computing that quantum computers cannot optimize. This mechanism operates within legacy Bitcoin script, avoiding protocol changes, but demands far more computing power than standard transactions, directly linking to the high cost per transaction.

Industry Comparison

This development contrasts with other quantum-related efforts in crypto. For instance, Lightning Labs recently published a quantum "escape hatch" prototype for wallet ownership proof, while the broader community debates protocol upgrades. Key differences include:

• QSB focuses on transaction-level security without protocol changes, unlike long-term signature upgrades.
• Costs are transaction-based, whereas other solutions may involve network-wide changes.
• It addresses active transactions but not dormant wallets, a gap highlighted by critics.

Risks & Counterpoints

The proposal faces several bearish scenarios and uncertainties. What would invalidate the bullish narrative? If costs remain too high for widespread use, adoption could stagnate. What data is missing? Exact scalability impacts and integration with layers like Lightning Network are not addressed. The failure condition: If quantum threats materialize before cheaper solutions emerge, Bitcoin's security could be compromised. Key risks include:

• High transaction costs limiting practical use to niche cases.
• Unaddressed vulnerabilities in 1.7 million BTC in early P2PK addresses.
• Lack of coverage for use cases beyond basic transactions.

Future Implications

In the near term, this proposal may spur discussions on quantum readiness but is unlikely to see mass adoption due to cost barriers. It could pressure developers to accelerate protocol-level solutions, while large holders might test it for high-stakes transfers. The research the need for balanced approaches between immediate fixes and sustainable upgrades.

Background

Bitcoin's quantum vulnerability stems from its reliance on elliptic curve cryptography, which quantum computers could break using algorithms like Shor's. The community has been split on responses, with debates over protocol upgrades versus preserving Bitcoin's core ethos. This proposal enters a where an estimated 1.7 million BTC in dormant wallets remain exposed, adding complexity to security discussions.

Related Developments

Cross-market reactions include ongoing efforts by entities like Lightning Labs on quantum prototypes, while regulatory and institutional moves continue shaping crypto. For context, recent articles cover topics such as StarkWare's quantum defense tech and Bitcoin price movements amid geopolitical shifts, highlighting the interconnected nature of security and market dynamics.

Conclusion

The QSB proposal offers a theoretical path to quantum-safe Bitcoin transactions without protocol changes, but its high costs and limited scope reveal the practical challenges in securing a decentralized network. While it provides a temporary solution for large transactions, long-term security likely depends on broader upgrades, emphasizing the trade-offs between innovation and usability in crypto.

Final Line

Traders and analysts are watching for cost reductions in quantum-safe methods and progress on protocol upgrades to gauge Bitcoin's long-term security resilience.

Frequently Asked Questions

What is the core update in this report?

This article tracks Bitcoin can be made quantum-safe without a protocol upgrade: Researcher. The latest timestamped reference is: Related: Bitcoin’s quantum challenges are ‘more social than technical’: Grayscale “This is huge,” said StarkWare CEO Eli Ben-Sasson, claiming that it essentially makes Bitcoin quantum-safe today..

Which data points matter most right now?

Key references currently highlighted are $75 and $150. If additional validated figures emerge, coverage will be updated.

How should readers interpret this in market context?

The practical impact depends on confirmation quality, liquidity reaction, and whether follow-up disclosures reinforce the initial report.

What timeline checkpoints should be monitored next?

Watch for follow-up milestones linked to: Related: Bitcoin’s quantum challenges are ‘more social than technical’: Grayscale “This is huge,” said StarkWare CEO Eli Ben-Sasson, claiming that it essentially makes Bitcoin quantum-safe today.; “While this article describes a solution that works today for quantum-safe Bitcoin transactions, it should be treated as a last-resort measure.” Google published a paper in March that unsettled the Bitcoin community as it suggested that a quantum computer could potentially crack Bitcoin’s cryptography using far fewer resources than previously thought..

Where is the primary source for this update?

Primary source reference: https://cointelegraph.com/news/researchers-say-bitcoin-can-be-made-quantum-safe-without-protocol-upgrade.

What to watch next: Related: Bitcoin’s quantum challenges are ‘more social than technical’: Grayscale “This is huge,” said StarkWare CEO Eli Ben-Sasson, claiming that it essentially makes Bitcoin quantum-safe today.; “While this article describes a solution that works today for quantum-safe Bitcoin transactions, it should be treated as a last-resort measure.” Google published a paper in March that unsettled the Bitcoin community as it suggested that a quantum computer could potentially crack Bitcoin’s cryptography using far fewer resources than previously thought..