Ethereum Co-Founder Joseph Lubin Highlights the Risks of AI Control by Major Tech Firms

The next significant milestone for cryptocurrency is emerging from advancements in artificial intelligence, according to Joseph Lubin, CEO of Consensys and co-founder of Ethereum. In a conversation with CoinDesk, Lubin noted that autonomous agents can perform transactions, coordinate, and verify each other on decentralized networks using cryptocurrency infrastructure as the basis for machine-driven activities. Lubin, who is set to speak at Consensus Miami 2026, expressed sympathy for the idea that blockchain technology is suited for machine intelligences but does not envision humans being replaced. Instead, he foresees increasingly intelligent interfaces simplifying complexity, enabling users to interact with cryptocurrency systems through intent rather than manual inputs, with AI acting as an intermediary layer between people and protocols. However, this vision comes with potential risks, particularly if AI infrastructure remains concentrated among a few large technology companies, which could lead to trouble, as per Lubin's warning. He emphasized the importance of decentralized systems and cryptography in ensuring accountability and enabling machines to verify each other in transparent environments. Products like MetaMask are evolving to reflect this shift, with Lubin describing the wallet as a new kind of bank that users own and control, part of a transition towards a personal financial operating system. AI-powered agents could manage assets, execute transactions, and navigate a growing decentralized economy on behalf of users. Lubin also pointed to structural changes in the Ethereum ecosystem, including the rise of corporate chains, which he expects to become more common as companies seek higher throughput and greater control over their infrastructure. While he believes assets are best issued on Ethereum's base layer for durability, he noted that stablecoins are part of a transition towards more decentralized financial systems but are not the endpoint. Stablecoins are seen as a stepping stone, with current models relying heavily on centralized issuers. Over time, Lubin expects growth in decentralized collateral to enable more robust forms of cryptocurrency. On tokenization, he suggested that traditional finance and decentralized finance are converging, combining centuries of financial innovation with newer blockchain-based systems, resulting in a more granular and programmable global economy. Lubin adopted a measured tone on longer-term technical risks like quantum computing, stating that while it is not an immediate concern, Ethereum developers have been preparing for it over the years, viewing it as part of Ethereum's natural evolution.