Description
Kurier is a developer-facing REST API built by Horizen Labs that handles zero-knowledge proof submission, optimistic verification, job-status tracking, and on-chain finalization, avoiding the need to operate verification infrastructure. It supports multiple proof systems, including groth16, fflonk, plonky2, risc0, sp1, ultrahonk, ultraplonk, and proof of SQL, and is available on mainnet and testnet.