Ethereum co-founder Joseph Lubin warns of the dangers of AI being controlled by a few big tech firms

Crypto’s next major inflection point is coming from artificial intelligence (AI).

That's according to Consensys CEO and Ethereum co-founder Joseph Lubin. He told CoinDesk that autonomous or semi-autonomous agents can transact, coordinate and verify one another on decentralized networks, using crypto rails as a foundation for machine-driven activity.

Lubin, who will be speaking at Consensus Miami 2026 next month, said he is “sympathetic to the idea that blockchain is for machine intelligences,” but does not see humans being displaced. Instead, increasingly intelligent interfaces will abstract away complexity, allowing users to interact with crypto systems through intent rather than manual inputs. In that model, AI becomes the intermediary layer between people and protocols.

That vision comes with risks. If AI infrastructure remains concentrated among large technology firms, “we could be in trouble,” Lubin warned. He argued that decentralized systems and cryptography will be essential in ensuring accountability, enabling machines to “check on one another” in transparent, verifiable environments.

Within that broader shift, products like MetaMask — a Consensys product — are evolving to reflect the change. Lubin said the wallet is being rebuilt as “a new kind of neobank that you own and control,” part of a transition toward what he described as a “personal money operating system.” AI-powered agents could act on behalf of users, managing assets, executing transactions and navigating a growing decentralized economy. “You can walk around with your personal financial system in your pocket,” he said.

The rise of corporate chains on Ethereum

Beyond interfaces, Lubin pointed to structural changes across the Ethereum ecosystem. The architecture of the blockchain is also shaping how institutions approach adoption. Lubin expects “corporate chains” to become more common as companies seek higher throughput and greater control over their infrastructure. Still, he argued that assets are best issued on Ethereum’s base layer, saying “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, one of crypto’s fastest-growing sectors, are part of that transition, but not the endpoint. Lubin described 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 more broadly, Lubin suggested that traditional finance and decentralized finance are entering a period of convergence, combining centuries of financial innovation with newer blockchain-based systems. The result, he said, will be a more granular and programmable global economy.