Project Eleven Flags Rising Risks For Bitcoin

For years, the quantum threat has remained a distant scenario for bitcoin. This perception is wavering. A report from Project Eleven now estimates that the network might lack time to prepare its cryptographic transition before the arrival of quantum computers capable of breaking its current protections. Behind this alert lies a colossal issue: several million BTC could become vulnerable if the ecosystem fails to coordinate its migration in time. Such a prospect brutally revives the debate about bitcoin’s future security.

Project Eleven Warns of a Risk Window That Is Approaching

In a report, the company Project Eleven estimates that there is now more than a fifty percent chance that a quantum computer capable of breaking current cryptographic systems will appear before 2033.

The document even discusses a possible “Q-Day” as early as 2030, the moment when the encryption algorithms used by bitcoin could become vulnerable. Indeed, the company supports the idea that quantum progress could follow a sudden dynamic, summed up by the formula: “nothing… then everything switches suddenly”.

Several points raised in the report explain this rise in concerns :

• Project Eleven estimates that about 6.9 million BTC could become vulnerable in certain scenarios related to future quantum capabilities ;
• A researcher has succeeded in deriving a 15-bit elliptic key using experimental quantum hardware ;
• Shor’s algorithm is identified as the main threat to ECDSA signatures used by bitcoin ;
• Once a public key is exposed during a transaction, a sufficiently powerful quantum computer could theoretically recover the associated private key ;
• The report emphasizes that the risk depends as much on the time necessary for the network’s migration as on the quantum technology’s own progress.

For now, no quantum computer possesses the necessary capabilities to break bitcoin’s cryptographic keys. Project Eleven nevertheless estimates that the network’s preparation window could close faster if discussions around post-quantum solutions remain too slow.

A Post-Quantum Migration That Could Surpass the Taproot Challenge

Alex Pruden, CEO of Project Eleven, estimates that bitcoin’s post-quantum transition could be more complex than Taproot. This time, the difficulty would not only lie in the technical validation of an update but in coordinating the entire ecosystem: wallets, exchanges, custodians, companies, and individual users would all need to migrate to new cryptographic standards.

Project Eleven notably mentions the concept of “Mosca’s Inequality”, according to which a system becomes vulnerable when the remaining time before the threat is less than the time needed to complete its migration. The company estimates that this point could be reached much sooner than expected if technical discussions delay turning into concrete implementations.

Several approaches are beginning to emerge within the Bitcoin community. BIP-360 is among the proposals studied to introduce quantum-resistant signatures. Other researchers, such as Dan Robinson at Paradigm, are working on “timestamp proofs” mechanisms designed to secure certain cryptographic proofs in a post-quantum environment.

The debates also focus on millions of dormant BTC whose keys could remain vulnerable if their owners never migrate their funds. The issue becomes even more sensitive as major tech groups themselves start accelerating their own transitions. Google already plans some post-quantum migrations by 2029 in its critical infrastructures, signaling that the topic now widely exceeds the academic framework.

Bitcoin has never yet faced a threat of such nature. Previous protocol evolutions mostly targeted scalability, privacy, or network optimization. This time, the issue directly touches the cryptographic foundation that protects fund ownership. Thus, the coming years could transform a debate still perceived as theoretical into a strategic priority for the entire crypto industry. Bitcoin must therefore prepare itself against this threat.