The Ethereum Foundation and Open Anonymity Project launched zkAPI on Ethereum mainnet on October 1, enabling users to deposit credits and prove AI API payments without revealing their identity or funding address. zkAPI uses zero-knowledge proofs to authorize capped, short-lived API sessions, separating payment verification from prompt content seen by the AI provider. While it enhances payment privacy by unlinking billing accounts from usage, it does not hide the prompt content or network metadata, meaning providers still see requests and can potentially correlate sessions through IP addresses or prompt details. The system is live with a public contract and code repository, but user adoption, security audits, and privacy in all configurations remain to be evaluated. zkAPI represents a significant step toward private AI payments but does not guarantee full anonymity in AI interactions.
Ethereum's zkAPI for private AI payments provides context for cryptocurrency market activity. For readers following the crypto sector, here is Pluang's market snapshot as of Oct 02, 2026 20:45 WIB: out of 50 major cryptocurrencies, 40 rose and 8 fell today. Notable moves include SXP (Solar) down 46.27% at Rp37 with a typical hold time of 94 days, ENJ (Enjin Coin) up 23.56% at Rp648 with 100% buy order activity and a typical hold time of 104 days, and MANA (Decentraland) up 15.41% at Rp1,842 with a typical hold time of 156 days and 58% buy order activity.
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