Bitcoin developers are advancing a new proposal to protect the network from emerging quantum computing threats amid growing concerns about cryptographic vulnerabilities.
The initiative follows fresh warnings from Google Quantum AI that existing encryption standards may be weaker than previously believed.
Against this backdrop, the proposed upgrade, BIP-360, or “Pay to Merkle Root (P2MR)”, seeks to strengthen Bitcoin’s long-term resilience.
Key Points
- Google Quantum AI research warns that breaking Bitcoin’s elliptic-curve cryptography may require fewer resources than previously estimated, accelerating concerns about quantum timelines.
- The study suggests sufficiently advanced quantum machines could theoretically break ECC in minutes.
- Industry analysis estimates that millions of Bitcoin could be exposed if public keys remain visible on-chain, with potential losses measured in hundreds of billions of dollars.
- BIP-360 proposes replacing exposed public-key-based spending with a Merkle-root-based structure to reduce attack surfaces in a future quantum computing scenario.
Google Research Raises Alarm Over Cryptographic Risks
The urgency around this effort stems largely from recent findings published by Google Quantum AI. In its whitepaper, the organization argues that breaking 256-bit elliptic-curve cryptography (ECC) may require significantly fewer resources than earlier estimates suggested.
Specifically, the research indicates that fewer than 500,000 physical qubits could decrypt such systems in roughly nine minutes. Notably, this duration is shorter than Bitcoin’s average block confirmation time, raising practical concerns.
The study further estimates that the top 1,000 Ethereum wallets could be compromised within nine days. Based on these findings, Google urged the crypto industry to accelerate its transition toward post-quantum cryptography.
Industry Feedback and Risk Exposure
Following the report, industry experts quickly weighed in on its implications. Haseeb, managing partner at Dragonfly, noted that the research improves the efficiency of breaking ECDSA by nearly 20 times, potentially advancing the need for quantum-resistant systems to as early as 2029.
He also pointed out that Google verified its findings using zero-knowledge proofs, allowing validation without exposing sensitive technical details.
At the same time, estimates of potential exposure within the Bitcoin network are becoming clearer. Analysis from Project Eleven suggests that approximately 7 million BTC could be vulnerable under a “long exposure” scenario in which wallet public keys are already visible on-chain. In such cases, quantum attackers could, in principle, exploit this data.
At current market prices, the assets at risk are valued at roughly $470 billion, underscoring the scale of the potential threat.
BIP-360 Testnet Deployment Begins
As concerns mount, BTQ Technologies has released BIP-360 on its Bitcoin Quantum Testnet (v0.3.0). This represents the first deployment of the proposal within an operational test environment, enabling practical experimentation and validation.
The P2MR model introduces a redesigned transaction structure that relies on Merkle roots instead of directly exposing public keys. By doing so, it aims to reduce the effectiveness of quantum-based attacks, including those leveraging Shor’s algorithm.
Although still in draft form, the testnet deployment allows developers, miners, and researchers to evaluate performance and security under real-world conditions.
Addressing Structural Weaknesses in Taproot
Importantly, BIP-360 also targets a known limitation in Bitcoin’s Taproot upgrade, introduced in 2021. While Taproot improved efficiency and privacy, its key-path spending mechanism can reveal public keys on-chain.
Over time, this exposure could become a critical liability in a quantum-enabled threat landscape. Therefore, BIP-360 seeks to mitigate this risk by minimizing or eliminating public key exposure through its redesigned framework.
Expanded Testnet Features and Early Adoption
Beyond its core architecture, the Bitcoin Quantum Testnet v0.3.0 introduces several enhancements to support post-quantum experimentation. These include new address formats, integration of Dilithium-based signature schemes, and full transaction lifecycle testing.
To accelerate development, block times have been reduced to one minute, while fee structures and signature processing have been adjusted to handle larger cryptographic payloads.
This evolving test environment has already gained traction. According to BTQ Technologies, more than 50 miners are participating in the network. The system has processed over 100,000 blocks and attracted a community of more than 100 open-source contributors. Notably, this release represents the fourth iteration of the testnet, reflecting ongoing development.
Narrowing Window for Quantum Preparedness
Taken together, these developments point to a shift across the crypto industry. As highlighted by Google Quantum AI and supported by independent analysis, the timeline for addressing quantum threats may be shorter than once assumed.
In this context, initiatives like BIP-360 represent early but meaningful steps toward future-proofing blockchain infrastructure. While still experimental, they signal a growing recognition that adapting to quantum-era risks is no longer optional, but increasingly urgent.
DisClamier: This content is informational and should not be considered financial advice. The views expressed in this article may include the author's personal opinions and do not reflect The Crypto Basic opinion. Readers are encouraged to do thorough research before making any investment decisions. The Crypto Basic is not responsible for any financial losses.
