Charles Hoskinson, the founder of Cardano and one of the cryptocurrency industry’s most outspoken figures, has issued new comments on Bitcoin and ADA, focusing on the risks he believes could emerge as quantum computing develops.

Speaking recently on The Starting Block program, Hoskinson said Bitcoin may face its greatest test from advances in quantum computing technology. He argued that if the Bitcoin network does not implement necessary upgrades in time, it could risk losing its position as the world’s largest cryptocurrency.

The concern relates to the way blockchains depend on cryptographic systems to protect user funds and validate ownership. Large-scale, fault-tolerant quantum computers are not currently part of everyday blockchain infrastructure, but researchers and protocol developers have long discussed whether future machines could weaken widely used public-key cryptography and force networks to migrate to quantum-resistant alternatives.

Hoskinson identified Bitcoin’s governance model as what he sees as the network’s main weakness. According to his remarks, that structure makes it difficult to coordinate major changes to the protocol. As quantum computing advances, he said, quantum computers could begin to pose a threat to today’s cryptographic infrastructure.

Hoskinson acknowledged that Bitcoin has survived many challenges since its launch, including regulatory pressure, market crashes, and the disappearance of its founder, Satoshi Nakamoto. However, he said quantum computing presents a different type of risk because it would require coordinated technical upgrades across the entire network.

His warning centered on whether the Bitcoin community can reach agreement on the changes he considers necessary. Hoskinson said that if Bitcoin cannot adopt the required upgrades, the network could lose its competitive advantage and, over the long term, surrender its leadership position to other blockchains.

Hoskinson Positions Cardano as Bitcoin’s Successor

Hoskinson also drew comparisons between Bitcoin and Cardano, arguing that Cardano was built to preserve Bitcoin’s core philosophy while addressing technical limitations that have appeared over time.

He described Cardano as “the spiritual successor to Bitcoin” and said the network was designed to solve some problems that Nakamoto could not address because of limits related to expertise and time.

Hoskinson said Cardano’s on-chain governance system is one of its most important advantages. He argued that if a transition to quantum-resilient infrastructure becomes necessary, the ADA community would be able to vote on-chain and implement required protocol changes more quickly and easily.

The comparison highlights a broader debate across the crypto industry over how decentralized networks should handle security upgrades that require widespread coordination. Bitcoin has historically favored conservative protocol changes and broad social consensus, while newer networks often emphasize formal governance mechanisms as a way to make upgrades more explicit.

He added that this governance structure could allow Cardano to adapt faster to future technological threats, including those associated with quantum computing.