Bitcoin's Quantum Vulnerability: A Growing Concern for the Network

A report by Project Eleven has cast doubt on the security of the Bitcoin network, suggesting that it may not have enough time to prepare for the transition to post-quantum cryptography. The report estimates a 50% chance of a quantum computer capable of breaking current cryptographic systems appearing before 2033.

According to the report, nearly 6.9 million BTC could become vulnerable under certain scenarios tied to future quantum computing capabilities. This is because Shor's algorithm is identified as the main threat to ECDSA signatures used by Bitcoin, and 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. Currently, no quantum computer possesses the necessary capabilities to break Bitcoin's cryptographic keys, but Project Eleven estimates that the network's preparation window could close faster if discussions around post-quantum solutions remain too slow.