Introducing zkAPI: private usage credits for any API

tl;dr: zkAPI lets you pay for a metered API without being known.

tl;dr: zkAPI lets you pay for a metered API without being known. Deposit credits into an Ethereum vault once, then authorize bounded usage with zero-knowledge proofs instead of an identity. The provider sees the requests, and the payment layer sees the spend. Neither learns the link between them. The...