Cardano founder Charles Hoskinson has warned that Bitcoin could eventually lose its position as the world’s largest cryptocurrency if it fails to adapt to quantum computing.
Speaking in an interview on The Starting Block, Hoskinson claimed that Bitcoin’s biggest weakness is its limited ability to implement major protocol upgrades.
He argued that Bitcoin’s governance model makes significant network changes difficult, a challenge that could become critical as quantum computing advances and threatens today’s cryptographic security.
Quantum Computing Could Become Bitcoin’s Biggest Test
According to Hoskinson, Bitcoin has successfully overcome several external challenges throughout its history, including the disappearance of its pseudonymous creator, Satoshi Nakamoto.
However, he stressed that quantum computing represents a fundamentally different threat. Unlike previous challenges, quantum-resistant security would likely require coordinated, network-wide upgrades. If Bitcoin cannot organize and deploy those changes efficiently, Hoskinson believes it could eventually lose its dominance in the cryptocurrency market.
For context, Bitcoin remains the world’s largest cryptocurrency by market cap, with a valuation of $1.28 trillion.
Conversely, Hoskinson argued that Cardano was built to preserve Bitcoin’s original vision while addressing limitations that have emerged over time.
He described Cardano as Bitcoin’s “spiritual successor,” saying the blockchain solves issues that Satoshi Nakamoto could not fully address because of technical limitations and time constraints during Bitcoin’s early development.
On-chain Governance Gives Cardano Greater Flexibility
Hoskinson identified Cardano’s on-chain governance system as one of the network’s greatest strengths.
He explained that if quantum-resistant infrastructure becomes necessary, Cardano stakeholders could vote on the required protocol changes and execute the migration through the blockchain’s governance framework.
According to him, this process would allow Cardano to respond more quickly and efficiently to future technological challenges than networks with more rigid governance structures.
Leios Upgrade Expected to Deliver Massive Performance Boost
Hoskinson also revealed that Cardano is preparing for its largest network upgrade to date. He said the enhancement is expected to increase the blockchain’s performance by 60x.
The upgrade he referenced is Ouroboros Leios, Cardano’s next-generation scaling protocol. Last month, developers launched Musashi Dojo, the Leios testnet, confirming that development is progressing as planned.
Meanwhile, the recent activation of the van Rossem hard fork (Protocol Version 11) laid the foundation for Leios, setting the stage for its anticipated mainnet launch later this year.
Hoskinson Proposes a Non-Custodial Way to Bring Bitcoin to Cardano
Beyond network upgrades, Hoskinson outlined a potential method for bringing Bitcoin liquidity into the Cardano ecosystem without relying on traditional blockchain bridges or triggering taxable events.
He explained that because both Bitcoin and Cardano use the Unspent Transaction Output (UTXO) accounting model, developers can leverage zero-knowledge cryptography to create a non-custodial mirror of Bitcoin on Cardano.
Under this approach, Bitcoin holders would retain ownership of their $BTC while accessing Cardano-based decentralized applications without transferring their assets to a third-party bridge.
Hoskinson argued that this model would significantly improve security by eliminating the risks associated with cross-chain bridges, which have historically been among the most frequent targets of cryptocurrency exploits.
He also emphasized that the process would remain tax-neutral because it does not involve creating a new asset or selling Bitcoin. Instead, users would continue holding their original $BTC while securely participating in Cardano’s ecosystem through zero-knowledge technology.
