ZK-SNARK Development

From Circuits to Production Wallets

Zero-knowledge proofs let you prove something is true without revealing why. I have built production ZK-SNARK systems — from writing Circom circuits to shipping wallet engines that process private transactions across multiple blockchains. The hardest part is not the cryptography. It is making the proving system fast enough that users do not notice it is there.

What This Means for Your Business

The most common mistake in ZK projects is treating the proof system as a black box. Under-constrained Circom circuits can pass verification while allowing forged proofs — a class of vulnerability that standard testing does not catch. You need someone who understands the constraint system at the circuit level, not just the API surface.

If you are building privacy-preserving transactions, compliant DeFi protocols, or any system where users prove something without revealing everything — the architecture of your proving pipeline determines whether proofs generate in 200ms or 20 seconds. That gap is the difference between a usable product and an academic demo.

How I Have Used This in Production

  1. Multi-Chain ZK Wallet Engine

    Panther Protocol

    Built a zk-SNARK wallet engine with a UTXO-based transaction model supporting multiple blockchains. The UTXO model was chosen over account-based because it enables transaction graph privacy — each output is unlinkable to its inputs without the spending key.

  2. Circom Circuit Security Audits

    Panther Protocol

    Identified critical vulnerabilities in Circom circuits during security audits — specifically under-constrained signal assignments that would have allowed proof forgery. Built verification tooling to catch constraint gaps before deployment.

  3. Zero-Knowledge Proof Integration

    Panther Protocol

    Integrated zero-knowledge proof system for private transactions while maintaining on-chain verifiability. Optimized proof generation for browser environments using Service Workers to keep the UI responsive during computation.

Technologies

zk-SNARKzk-STARKCircomElliptic Curve CryptographyService WorkersTypeScriptReact

ZK wallets that span multiple chains need a protocol layer to normalize finality, block times, and signing schemes. See how I built that abstraction.

Cross-Chain Protocols — Connecting Blockchains

The on-chain verifier is a smart contract. I built the Solidity layer that validates zk-SNARK proofs while keeping transaction details confidential.

Smart Contract Development — Solidity to Solana

Proof generation is compute-heavy. Rust compiled to WebAssembly is how I kept it fast enough for browser environments.

Rust and WebAssembly — Native Performance in the Browser

Building a privacy protocol?

ZK systems fail silently — under-constrained circuits pass all tests and break in production. I have audited and shipped these systems. If you need someone who works at the circuit level, not just the API surface, let's talk.

Discuss your ZK architecture