We architect and deploy custom smart contracts that form the secure, immutable backbone of your application. Our development process is built on audited code patterns and rigorous testing to ensure reliability from day one.
LABS
Services
EVM-Based Encrypted Messaging dApp Development
Full-stack development of secure, decentralized messaging applications on Ethereum and EVM-compatible chains. We deliver end-to-end encryption, gas-optimized smart contracts, and seamless wallet integration.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for DeFi, NFTs, and enterprise applications.
- Protocol Development: Custom
ERC-20,ERC-721, andERC-1155tokens, DEXs, lending platforms, and staking mechanisms. - Security-First Approach: Development with
OpenZeppelinlibraries, comprehensive unit/integration testing, and pre-audit code reviews. - Gas Optimization: Expert-level Solidity to minimize transaction costs and maximize user efficiency.
- Full Lifecycle Support: From initial architecture and development through to mainnet deployment and ongoing maintenance.
We deliver battle-tested contracts that execute exactly as intended, protecting your assets and your users' trust.
key-features-cards
END-TO-END ENCRYPTION INFRASTRUCTURE
Core Technical Capabilities
We build secure, scalable messaging dApps on EVM chains, delivering enterprise-grade privacy and seamless user experiences. Our architecture ensures compliance with modern security standards while maintaining the decentralization ethos.
03
Gas-Optimized Smart Contracts
Custom Solidity contracts for message relaying, inbox management, and subscription logic. Built with OpenZeppelin libraries and optimized for cost, achieving up to 40% lower gas fees for core operations.
40%
Lower Gas Fees
Solidity 0.8+
Secure Version
05
Cross-Chain Messaging Bridges
Enable communication across EVM chains (Ethereum, Polygon, Arbitrum) via LayerZero, Axelar, or Wormhole. Maintains encryption integrity while allowing users on different networks to connect.
< 2 min
Cross-Chain Finality
5+ Chains
Supported
06
Security Audits & Penetration Testing
All smart contracts and cryptographic implementations undergo rigorous audits by firms like Trail of Bits or CertiK. Includes automated scanning, manual review, and a formal verification report for clients.
100%
Audited Code
Zero Critical
Vulnerabilities
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Project
We translate technical execution into measurable business results. Our EVM-based encrypted messaging dApp development delivers secure, scalable infrastructure with clear performance guarantees.
01
End-to-End Encrypted Chat
Deploy private messaging with Signal Protocol-inspired encryption, ensuring only sender and recipient can read messages. All data is encrypted on-chain or in decentralized storage, never on our servers.
AES-256-GCM
Encryption Standard
Zero-Knowledge
Key Management
02
Gas-Optimized Smart Contracts
Custom-built Solidity contracts for messaging logic, group management, and access control. We implement EIP-712 for secure signing and optimize for L2s like Arbitrum or Polygon to reduce user costs by up to 90%.
< $0.01
Avg. Tx Cost (L2)
OpenZeppelin
Security Base
03
Decentralized Identity & Reputation
Integrate ENS for human-readable addresses and build on-chain reputation systems. Users control their identity via wallets, enabling spam resistance and verifiable credentials without centralized databases.
ERC-725/ERC-735
Identity Standards
SBTs
Reputation Model
04
Cross-Chain & Multi-Protocol Support
Enable messaging across EVM chains using LayerZero or Axelar. Support for file sharing via IPFS/Arweave and optional integration with XMTP for broader protocol compatibility.
5+
EVM Chains
IPFS/Arweave
Storage Backend
05
Enterprise-Grade Security Audit
Every dApp undergoes a comprehensive security review. We provide a final audit report from certified partners, covering smart contracts, encryption implementation, and key management vulnerabilities.
100%
Code Coverage
CertiK/Quantstamp
Audit Partners
06
Full-Stack dApp Deployment
We deliver a production-ready application including React/Next.js frontend, Node.js backend services for indexing, and infrastructure setup on AWS/GCP with CI/CD pipelines for automated deployments.
< 4 weeks
MVP Timeline
99.5% SLA
Infra Uptime
Choose Your Path to Secure Messaging
Structured Development Tiers
Compare our structured packages for EVM-based encrypted messaging dApp development, from MVP to enterprise-grade deployment.
| Core Deliverables | Starter | Professional | Enterprise |
|---|---|---|---|
End-to-End Encrypted Messaging Protocol | |||
Custom Smart Contract Suite (ERC-7252/ERC-4337) | Basic | Advanced | Fully Custom |
Smart Contract Security Audit (2nd Party) | |||
Frontend SDK & Integration Support | Basic React SDK | Multi-Framework SDK | White-Glove Integration |
Multi-Chain Deployment Support | 1 EVM Chain | Up to 3 EVM Chains | Unlimited EVM Chains |
On-Chain Key Management & Recovery | |||
Performance & Uptime SLA | 99.5% | 99.9% | |
Technical Support & Response Time | Email (72h) | Priority Slack (24h) | Dedicated Engineer (4h) |
Post-Launch Monitoring & Maintenance | 1 Month | 3 Months | 12 Months + Optional SLA |
Estimated Delivery Timeline | 4-6 Weeks | 8-12 Weeks | 12-16 Weeks |
Starting Project Investment | $25,000 | $75,000 | Custom Quote |
how-we-deliver
PROVEN METHODOLOGY
Our Development Process
A systematic, security-first approach to building encrypted messaging dApps that launch on time and scale with your user base.
01
Architecture & Protocol Design
We design a secure, scalable architecture tailored to your use case, selecting the optimal encryption protocols (e.g., Signal Protocol, X3DH) and on/off-chain data strategies for your EVM-based dApp.
2-3 weeks
Design Phase
100%
Custom Architecture
02
Smart Contract Development
Secure, gas-optimized smart contracts built in Solidity 0.8+ for managing keys, access control, and message metadata. All contracts follow OpenZeppelin standards and are designed for audit-readiness.
OpenZeppelin
Security Standard
Gas-Optimized
Code Focus
03
End-to-End Encryption Layer
Implementation of battle-tested encryption libraries for key generation, exchange (using ECDH), and message sealing. We ensure perfect forward secrecy and deniability where required by your spec.
ECDH / Signal
Protocols Used
Zero-Knowledge
Proofs Integrated
04
Frontend & Wallet Integration
Development of a responsive React/Next.js frontend with seamless integration of Web3 wallets (MetaMask, WalletConnect) for authentication and signing, providing a native Web3 user experience.
React/Next.js
Frontend Stack
WalletConnect v2
Wallet Support
05
Rigorous Security Audit
Our code undergoes internal review and is prepared for external audits by leading firms. We provide a comprehensive audit report and implement all critical findings before mainnet deployment.
Audit-Ready
Code Delivery
Critical Fixes
Guaranteed
06
Deployment & Scaling
We handle mainnet deployment, configure scalable infrastructure (IPFS, The Graph, node providers), and provide monitoring dashboards for message throughput and system health.
99.9% SLA
Infrastructure Uptime
Full Handover
Documentation & Support
tech-stack
BUILT FOR SCALE AND SECURITY
Proven Technology Stack
We deliver encrypted messaging dApps on battle-tested EVM infrastructure, ensuring enterprise-grade security, performance, and developer experience from day one.
01
EVM Smart Contract Development
Secure, gas-optimized Solidity contracts for message encryption, key management, and on-chain interactions, built with OpenZeppelin libraries and audited security patterns.
Solidity 0.8+
Language
OpenZeppelin
Standard
02
End-to-End Encryption Layer
Implementation of Signal Protocol or custom ECIES/Secp256k1 schemes for peer-to-peer encrypted messaging, with secure key generation and storage solutions.
AES-256-GCM
Encryption
P2P
Architecture
03
Decentralized Storage Integration
Seamless integration with IPFS, Arweave, or Ceramic for storing encrypted message payloads and metadata, ensuring data permanence and censorship resistance.
IPFS/Arweave
Providers
Content IDs
On-Chain
04
Wallet & Identity Management
Secure integration with Web3 wallets (MetaMask, WalletConnect) and emerging identity standards (ENS, Sign-In with Ethereum) for seamless, non-custodial user onboarding.
SIWE
Auth Standard
WalletConnect v2
Protocol
05
Real-Time Messaging Infrastructure
Hybrid architecture using The Graph for historical queries and decentralized push notification networks (EPNS, XMTP) or WebSockets for real-time message delivery.
Sub-Second
Delivery
The Graph
Indexing
06
Security & Audit Readiness
Development follows security-first principles with comprehensive unit/integration testing, formal verification where applicable, and preparation for third-party audits.
100% Coverage
Test Goal
Audit-Ready
Codebase
EVM Messaging dApp Development
Frequently Asked Questions
Common questions about our end-to-end encrypted messaging dApp development service for EVM chains.
For a core encrypted messaging MVP with peer-to-peer chat, group channels, and wallet authentication, we deliver in 3-5 weeks. Complex features like token-gated chats, cross-chain messaging, or NFT-based identity add 1-2 weeks each. We use agile sprints with weekly demos to ensure alignment.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall