Privacy-Preserving Payment Layer using Zero-Knowledge Proofs & Rust

RESULTS

▫️70% reduction in calldata size — thanks to off-chain proof generation
▫️12,000+ shielded transactions in just 4 months
▫️<15s latency from proof to withdrawal
▫️Regulatory-ready compliance hooks built in
▫️190k gas avg. per verified withdrawal — cheaper than most L2 bridges

THE CLIENT

A rising DeFi infrastructure provider scaling fast in APAC and Europe — with one clear mission: deliver real financial privacy without getting blacklisted or blocked.

THE PROBLEM

▫️Ethereum is public by design.
▫️That meant every user action — deposit, send, receive — left a trace. Tornado Cash was no longer an option. And building a custom L1? Too slow, too risky.
▫️They needed:
▫️A working privacy system on Ethereum
▫️Fast withdrawals
▫️Minimal gas
▫️Optional compliance hooks
▫️No compromise on security

OUR SOLUTION

We built them a Rust-native privacy layer powered by zero-knowledge proofs — designed for Ethereum, optimized for performance, and hardened for regulatory scrutiny.

What We Delivered:
▫️zk-based mixer (Groth16, Bulletproofs)
▫️ Rust orchestrator for off-chain proof generation
▫️ Shielded ERC-20 & ETH transfers with Poseidon/MiMC commitments
▫️ Optional blacklisting of UTXOs/nullifiers
▫️ Solidity bridge contracts for L1 compatibility

BOTTOM LINE

▫️We helped them build the missing layer of DeFi: true privacy with real-world usability.
▫️Today, they’re offering this tech as a white-labeled SDK to wallets, fintechs, and dApps across Europe and Asia — proving privacy and compliance can coexist.

GET STARTED

If you would like to work with us or just want to get in touch, we’d love to hear from you!

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