Ethereum Wants to Break AI’s Paper Trail
Every question fired at a commercial AI model can leave more breadcrumbs than most users probably imagine. An API key connects to an account. The account connects to money. The prompts accumulate behind both. The Ethereum Foundation (EF) puts the problem plainly. “Every AI API call today carries an identity.” That’s the trail zkAPI is trying to break.
Launched Oct. 1 by the Ethereum Foundation and Open Anonymity Project, zkAPI lets somebody deposit ETH, USDC or other supported credits into an Ethereum vault and later pay for AI requests without telling the payment server who they are. The AI provider gets the request but not the billing identity behind it.
The Foundation’s description is striking because of how personal that billing history can become. “Prompts are personal. People ask AI models about their health, their finances, their doubts,” the Foundation’s blog post titled “Introducing zkAPI: private usage credits for any API” states. Pile up enough of those questions under one account and the provider doesn’t merely have a bill. It can have a years-long record of what someone has been thinking about.
