This article explores five zero-knowledge proof use cases for the Stellar ecosystem: zkTokens for private transactions, zkLogin for secure authentication, zkKYC for privacy-preserving compliance, zkVoting for governance, and zkVM for scalable computation via Risc Zero integration with Soroban.

The article examines how zero-knowledge proofs can address privacy concerns in digital systems while maintaining transparency and compliance. It details five emerging applications within Stellar: zkTokens enable confidential transactions on public ledgers; zkLogin systems provide secure, phishing-resistant authentication without exposing secrets; zkKYC allows selective disclosure of identity attributes for compliance; zkVoting enables private yet verifiable governance; and zkVM leverages zk-STARKs for off-chain computation verification. The article highlights Stellar's partnership with Nethermind to integrate Risc Zero verifiers into Soroban, enabling developers to write Rust programs that generate STARK proofs verified on-chain.