Bitcoin’s reliance on elliptic-curve cryptography has raised concerns about its long-term security in the face of future quantum computing breakthroughs. Project Eleven, a post-quantum cryptography firm, announced on July 15, 2026, the development of a new zero-knowledge proof prototype that enables users to verify wallet ownership without needing to reveal private cryptographic keys.
Project Eleven’s Post-Quantum Verification Prototype
Project Eleven described its latest technology as a substantial advancement for post-quantum security in digital assets. The prototype introduces a faster zero-knowledge proof system, aiming to strengthen wallet ownership verification methods against the threat of quantum computers.
Zero-knowledge proofs enable one party to prove the validity of certain information without actually sharing the information itself. Under Project Eleven’s approach, users can demonstrate they control the cryptographic structures behind a Bitcoin wallet address, all while shielding sensitive private key material from exposure.
The core mechanism leverages hardened derivation paths commonly used in modern cryptocurrency wallets. This design ensures that even if quantum computers become capable of breaking elliptic-curve cryptography, the hash-based derivation methods remain secure and resistant to reverse engineering.
With the technology, users can tie the ownership proof to a specific transaction or action, verifying control over a wallet for a given operation without revealing their full security credentials.
Project Eleven reported significant improvements in proof generation and verification times. The company stated that its prototype can generate a proof in 243 milliseconds and verify it within 40 milliseconds when tested on an Apple M5 MacBook Air with four CPU cores and no GPU. The process requires 2.1 GB of RAM per proof, with each proof sized at 358 KiB.
The current implementation supports three Bitcoin address formats: P2PKH, P2WPKH, and P2SH-P2WPKH. The company highlighted that any transition to practical real-world use would require adoption of protocol-level support by blockchain networks such as Bitcoin.
Project Eleven described its release as an early, unaudited prototype that does not yet allow for asset recovery on existing blockchains. Instead, it represents a potential path for research as the industry investigates security upgrades for the quantum era.
Mini dictionary: Zero-knowledge proofs (ZKPs) are cryptographic protocols that allow one party to confirm the truth of a statement without revealing the underlying information, supporting privacy and security in blockchain applications.
| Approach | Proof Generation Time | Verification Time | Hardware Used |
|---|---|---|---|
| Project Eleven Prototype | 243 ms | 40 ms | Apple M5 MacBook Air (4 CPU cores, no GPU) |
| Olaoluwa Osuntokun (Previous Version) | 14.6 s | Not specified | GPU used |
Project Eleven’s prototype reportedly improves performance by a factor of approximately 16 compared to the prior model developed by Olaoluwa Osuntokun, which required dedicated GPU resources and substantially longer processing times.
Implications for Bitcoin Security in a Quantum Era
Bitcoin and most digital assets currently depend on elliptic-curve cryptography for secure ownership verification and transaction authorization. The emergence of quantum computers with enough power could enable actors to calculate private keys from public keys, posing a direct threat to wallet security.
Experts do not see this risk as imminent but agree that migration strategies need to be established, since updating a global financial network’s security infrastructure would demand widespread collaboration and planning over several years.
Cryptographic researchers predict a time when users might have to move holdings to post-quantum-compliant addresses. Some may avoid transactions that expose public keys until new protocols are in place. Project Eleven’s work suggests zero-knowledge proofs could be an option for proving ownership during the migration process, offering an alternative mechanism for user authentication.
If adopted in the future, quantum-resistant recovery proofs could expand options for crypto users as quantum computing capabilities evolve. The research forms part of broader efforts to strengthen the resilience of Bitcoin and other cryptocurrencies as potential cryptographic vulnerabilities are identified.
