Ledger CTO Charles Guillemet warned that two new cryptographic breakthroughs could pose a long-term threat to Bitcoin. He noted that new research proposes a theoretically more efficient sub-exponential time algorithm to solve the elliptic curve discrete logarithm problem. Simultaneously, significant progress has been made in the efficiency of quantum computing attacks on elliptic curve cryptography, with researchers reducing the estimated quantum circuit cost by approximately 70%. French quantum computing company Alice & Bob estimates that it could theoretically be possible to crack Bitcoin's secp256k1 cryptography in about an hour using fewer than 30,000 physical cat qubits. Guillemet emphasized that these breakthroughs are currently theoretical and do not pose an immediate risk, but he cautioned that the estimated resources required to break common cryptographic schemes are continuously shrinking.