Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy audit-ready smart contracts for DeFi, NFTs, and enterprise protocols. Our engineers specialize in Solidity 0.8+, Rust, and Vyper, implementing OpenZeppelin standards and gas-optimized patterns from day one.
Deliver a secure, functional MVP in as little as 2-3 weeks.
Our development lifecycle is built for security and speed:
We focus on contracts that handle real value and require absolute reliability:
ERC-20, ERC-721, and ERC-1155 with advanced features.We architect and deploy production-ready, anonymous messaging systems on StarkNet. Our focus is on delivering secure, scalable, and compliant infrastructure that accelerates your time-to-market.
We write, test, and deploy high-assurance Cairo smart contracts for your messaging protocol. Our code follows OpenZeppelin patterns and is optimized for StarkNet's ZK-rollup environment to ensure minimal transaction costs and maximum security.
We design and implement custom zero-knowledge circuits using Cairo to enable provable anonymity. This includes proof generation for message sending/receiving without revealing sender/receiver identities or message content on-chain.
We build the off-chain client-side layer for key management and end-to-end encryption (E2EE), ensuring messages are only decryptable by intended recipients. Integrates seamlessly with on-chain ZK proofs for anonymity guarantees.
We provision, configure, and maintain the full StarkNet node infrastructure required for your application, including RPC endpoints, sequencers, and prover coordination. We ensure 99.9% uptime and sub-second API response times.
Every component undergoes rigorous security review. We conduct internal audits and facilitate third-party audits with leading firms. For critical logic, we employ formal verification methods to mathematically prove correctness.
We architect your system to scale with user growth, optimizing every Cairo contract and proof for minimal L1 settlement cost and L2 transaction fee. We implement batch processing and state compression techniques.
We deliver a production-ready, ZK-powered messaging layer with measurable results for your business. Here's what you can expect.
End-to-end encrypted messaging with zero-knowledge proofs on StarkNet. Sender, receiver, and content remain cryptographically anonymous, meeting the highest standards for confidential communication.
Every smart contract and cryptographic circuit undergoes a formal security audit by a top-tier firm like Trail of Bits or Quantstamp. We provide a comprehensive report and remediation before deployment.
Seamless API and SDK integration with your existing platform. We manage the full deployment lifecycle on StarkNet Mainnet, from testnet validation to production monitoring.
Cairo contracts are meticulously optimized for minimal L1 settlement costs. Our architecture ensures your users pay the lowest feasible fees for sending and verifying private messages.
You retain 100% ownership of the source code, audit reports, and cryptographic keys. We provide complete documentation and knowledge transfer to your engineering team.
Built on StarkNet's validity rollup for high throughput. The system is designed to scale with your user base, supporting thousands of private messages per second without compromising latency or cost.
Compare our tailored development packages for building secure, private messaging applications on StarkNet. Each tier includes Cairo smart contract development, zero-knowledge proof integration, and end-to-end encryption.
| Feature | Starter | Professional | Enterprise |
|---|---|---|---|
Cairo Smart Contract Development | |||
ZK-Proof Integration (ZK-STARKs) | Basic | Advanced | Custom |
End-to-End Encryption Layer | |||
On-Chain/Off-Chain Hybrid Architecture | |||
Smart Contract Security Audit | Basic Review | Full Audit + Report | Full Audit + Formal Verification |
Deployment & Mainnet Launch Support | |||
24/7 Monitoring & Alerting | 6 Months | 12 Months + SLA | |
Priority Support Response Time | 72h | 12h | < 4h |
Custom Feature Development (Hours) | 10 | 40 | Unlimited |
Estimated Delivery Timeline | 6-8 weeks | 8-12 weeks | Custom |
Starting Price | $25,000 | $75,000 | Custom Quote |
We deliver production-ready, secure ZK-powered messaging infrastructure through a structured, client-focused process that minimizes risk and maximizes speed to market.
We conduct a technical deep-dive to define your anonymous messaging protocol's requirements, threat model, and optimal StarkNet/Cairo architecture for privacy and scalability.
Our Cairo experts build your custom ZK circuits and smart contracts for anonymous messaging, implementing cryptographic primitives like Semaphore or custom nullifiers for identity protection.
Every line of Cairo and Solidity code undergoes internal review followed by a formal audit from a top-tier security firm, ensuring your protocol's anonymity guarantees are mathematically sound.
We deploy to StarkNet testnet, running extensive simulations for load, Sybil resistance, and privacy leakage under real-world conditions before mainnet launch.
We manage the secure mainnet deployment and provide 24/7 monitoring for transaction finality, ZK proof generation latency, and system health with actionable alerts.
Receive comprehensive technical documentation, admin key management procedures, and a knowledge transfer session for your team to own and scale the infrastructure.
Secure, audited smart contracts built for production by Web3-native engineers.
We architect and deploy custom smart contracts that form the backbone of your protocol. Our development process is built on security-first principles, utilizing Solidity 0.8+, OpenZeppelin libraries, and comprehensive testing suites to mitigate risk before the first line of code hits mainnet.
From initial concept to final audit, we deliver production-ready contracts in 2-4 weeks.
Our full-service delivery includes:
ERC-1967).EVM-compatible networks.We partner with leading audit firms like ConsenSys Diligence and CertiK to provide an additional layer of verification. Every contract undergoes unit testing, integration testing, and simulation against known attack vectors before audit submission.
Answers to common technical and commercial questions about building private communication protocols on StarkNet.
A production-ready MVP with core messaging, identity, and ZK-proof generation typically takes 6-8 weeks. This includes smart contract development in Cairo, frontend integration, and a security audit. Complex features like group chats or advanced anonymity sets can extend the timeline to 12+ weeks. We provide a detailed sprint-by-sprint roadmap during discovery.
Our experts will offer a free quote and a 30min call to discuss your project.