Charles Hoskinson, founder of Cardano (ADA), warned there is more than a 50 percent chance quantum computers will become a practical threat to cryptocurrencies before 2033. On May 17 (local time), blockchain media outlet BeInCrypto reported that Hoskinson said the quantum computing risk should be seen not as a distant theoretical possibility but as a technical deadline that requires action starting now. Cardano is pushing a transition to lattice-based cryptography. Hoskinson said, "I think there's a better than 50 percent chance that by 2033, there will be a working commercial quantum computer at scale." He added, "We're working on lattices, but the federal standards have already been applied. We know how to protect ourselves." The core issue is the elliptic-curve signature schemes used by major blockchains today. With sufficient quantum processing power, Shor's algorithm could be used to derive private keys and forge signatures, which could undermine distributed ledger consensus structures. Hoskinson pointed to hardware progress using neutral-atom approaches and government-backed indicators such as the U.S. Defense Advanced Research Projects Agency's (DARPA) quantum benchmarking initiative as factors that are bringing the threat forward. The possibility of a "harvest now, decrypt later" attack, in which encrypted data stored today could be decrypted later, was also raised. That means even if quantum computers have not yet been commercialised, data exposed or accumulated now could become targets of future attacks. The concern is not limited to Cardano. It was also noted that Bitcoin has large holdings at addresses with exposed public keys in a potentially vulnerable state. Hasib Qureshi, managing partner at Dragonfly, said the midpoint estimate for when modern public-key cryptography is decisively broken is about 10 years, while noting the timeline could be pulled forward. Cardano's response focuses on lattice problems, particularly the Learning With Errors (LWE) family. This approach is