Ethereum Co-Founder Warns of AI Dangers in the Hands of a Few Tech Giants

According to Consensys CEO and Ethereum co-founder Joseph Lubin, the next significant turning point for the crypto industry will be driven by artificial intelligence. In a recent interview, Lubin stated that autonomous or semi-autonomous agents can perform transactions, coordinate, and verify one another on decentralized networks, utilizing crypto rails as the foundation for machine-driven activities. Lubin, who is set to speak at Consensus Miami 2026, expressed his support for the idea that blockchain is suited for machine intelligences but does not envision humans being replaced. Instead, he believes that increasingly intelligent interfaces will simplify complexity, enabling users to interact with crypto systems through intent rather than manual inputs, with AI serving as the intermediary layer between people and protocols. However, if AI infrastructure remains concentrated among a few large tech firms, it could pose significant risks. Lubin emphasized the importance of decentralized systems and cryptography in ensuring accountability and enabling machines to 'check on one another' in transparent, verifiable environments. The evolution of products like MetaMask, a Consensys product, reflects this shift. Lubin described the wallet as being rebuilt as 'a new kind of neobank that you own and control,' part of a transition toward a 'personal money operating system.' AI-powered agents could act on behalf of users, managing assets, executing transactions, and navigating a growing decentralized economy. Lubin also pointed to structural changes across the Ethereum ecosystem, including the rise of 'corporate chains' as companies seek higher throughput and greater control over their infrastructure. He emphasized that assets are best issued on Ethereum's base layer, stating that 'the best way to ensure that an asset is durable... is to mint it on Ethereum layer one,' even if the asset is later used across other networks. Stablecoins are part of this transition but not the ultimate goal. Lubin views them as a 'stepping stone' toward more fully decentralized financial systems, noting that current models remain heavily reliant on centralized issuers. Over time, he expects growth in decentralized collateral to enable more robust, crypto-native forms of money. On tokenization, Lubin suggested that traditional finance and decentralized finance are converging, combining centuries of financial innovation with newer blockchain-based systems. The result will be a more granular and programmable global economy. While Lubin acknowledges the risks of quantum computing, he struck a measured tone, stating that Ethereum developers have been preparing for years and see it as part of the natural evolution of Ethereum.