AI agent reduces resources required for Bitcoin secp 256k1 quantum attack by 86%

AI agents help reduce Bitcoin secp256k1 quantum attack resource requirements by 86%.

Recently, a study involving more than 100 researchers revealed that artificial intelligence (AI) agents have played an important role in reducing the quantum computing resources required for key cryptographic operations related to Bitcoin. It has dropped by as much as 86.1%. The research results, released on September 9, highlight new efficiencies in computing costs related to the security of Bitcoin's underlying elliptic curve (secp 256k1). However, this study does not prove that Bitcoin has a real vulnerability to quantum attacks in practical applications.

Breakthrough in secp256k1 Optimization

The project focuses on optimizing quantum circuits used for secp256k1 dot addition-a core mathematical step in the Bitcoin digital signature process, rather than an attack to fully recover the private key. This specific process is critical to transaction authorization and wallet security within the Bitcoin network.

Eigen Labs launched the ECDSA.Fail Challenge in May, allowing researchers to compete to design more resource-efficient quantum circuits to perform this calculation. Each commit is evaluated by a composite resource score, which is calculated by multiplying the number of logical qubits by the average number of Toffoli gates required.

Over the next few months, the best-performing designs significantly reduced their resource scores, from 10.75 billion to 1.496 billion at the end of July. Leading solutions have reduced the use of logic qubits to 813 and the gate count to below one million in some cases. These achievements represent significant advances in the efficiency of this particular computing.

Quantum computing company IonQ Computing points out that a full-scale quantum attack on secp256k1 would still require approximately 1,457 logic qubits and 39 million Toffoli gates, which is equivalent to approximately 19,400 physically trapped ion qubits and approximately 25.7 days of runtime using its current method.

Although AI-driven optimization marks a major advance, these improvements are only for secp256k1 point-add, rather than the entire end-to-end Bitcoin key recovery process. Google researchers independently released higher resource estimates for the entire operation, ranging from 1,200 to 1,450 logic qubits and from 70 million to 90 million Toffoli gates. Because the results from ECDSA.Fail only address one component of a larger challenge, they cannot be directly compared.

Exposure to existing bitcoins

On-chain data provider Glassnode reported that 6.04 million BTC (30.2%) in the current circulation supply are now associated with public keys visible on the blockchain. Of these, 1.92 million BTC are stored in directly exposed output, and another 4.12 million BTC are at indirect risk due to address reuse and user behavior.

An additional risk that arises after a transaction is broadcast is that the public key will appear briefly before the transaction has sufficient network confirmation. If a sufficiently advanced quantum computer emerges, this window period can theoretically be used to derive the private key from the exposed public key before the transaction is completed.

The new Bitcoin improvement proposal BIP 360 recommends implementing Pay-to-Merkle-Root exports to minimize these risks during Taproot keypath spending. However, the BIP 360 does not alleviate the short-term exposure of pending transactions in the memory pool, nor does it automatically transfer older or previously exposed coins to anti-quantum addresses.

Coinbase analysts estimate that about 1.7 million BTC remain in traditional P2PK addresses, some of which are believed to belong to Satoshi Nakamoto or represent permanently lost coins. Deciding whether and how to migrate these dormant coins to post-quantum solutions is an unresolved issue for Bitcoin developers.

Planning for a post-quantum future

Other blockchain networks, such as Ethereum, are actively working to achieve extensive quantum-resistant upgrades by December 2029. Global regulators, including the G7, have also called for coordinated post-quantum migration strategies in the financial industry, emphasizing the urgency of proactive security planning.

Given how quickly a Federal Reserve decision or a new altcoin listing affects the crypto asset market, crypto investors are increasingly facing high-risk scenarios, rapid response is crucial. To keep up with these changes and minimize losses from switching between multiple tools, traders are adopting multifunctional platforms like CryptoApps, which provide real-time charts, customized price alerts, project-specific news and macroeconomic data on one screen without having to register an account or sacrifice privacy.

Glassnode's latest estimates show that 30.2% of the bitcoins in circulation have been exposed to the chain through direct on-chain public key or address reuse, increasing quantum-related risks until broader migration measures are taken.