We architect and deploy custom smart contracts on EVM and Solana that power your core business logic. Our development process is built for security and speed, delivering a production-ready MVP in 2-3 weeks.
LABS
Services
EVM-to-Cosmos Oracle Message Relayer Development
We build custom, high-throughput relayers to securely transmit oracle data and attestations between EVM-compatible chains and Cosmos SDK/IBC-based ecosystems.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
Every contract is a critical asset. We treat it with the rigor of financial infrastructure, not experimental code.
- Security-First Development: Built with
Solidity 0.8+andOpenZeppelinstandards, followed by third-party audits from firms like CertiK or Quantstamp. - Gas Optimization: Expert-level tuning to reduce transaction costs by 30-70% for your users.
- Full-Suite Support: From
ERC-20/721/1155tokens to complex DeFi primitives, staking pools, and DAO governance modules. - Compliance Ready: Integrate real-world asset logic, multi-sig controls, and upgrade patterns like
TransparentorUUPSproxies.
key-features-cards
PRODUCTION-READY RELAYER
Engineered for Performance and Security
Our EVM-to-Cosmos oracle relayers are built for enterprise-grade reliability, delivering high-throughput data with cryptographic guarantees and zero-trust security principles.
01
High-Throughput Message Queue
Process thousands of cross-chain messages per second with our optimized, non-blocking architecture. Built on battle-tested libp2p and Tendermint Core for predictable, low-latency performance.
< 3 sec
Median Finality
10K+ TPS
Message Capacity
02
Zero-Trust Security Model
Every message is cryptographically verified end-to-end. We implement formal verification for critical logic and leverage IBC's light client proofs to eliminate trust assumptions in the relayer itself.
Formal Verification
Critical Path
IBC Light Clients
Trust Foundation
03
Deterministic Gas Optimization
Predictable and minimized transaction costs for both EVM and Cosmos chains. Our relayers use pre-simulated gas estimation and batch optimizations to reduce operational expenses by up to 40%.
40%
Avg. Cost Reduction
Pre-Simulated
Gas Estimation
04
Modular & Extensible Architecture
Easily integrate new EVM chains (Arbitrum, Polygon) and Cosmos app-chains. Our plugin-based design allows for custom adapters, fee models, and monitoring hooks without core system changes.
2 Weeks
New Chain Integration
Plugin System
Architecture
05
Comprehensive Observability Suite
Gain real-time visibility with built-in Prometheus metrics, Grafana dashboards, and structured logging. Monitor message lifecycle, latency percentiles, and validator health from a single pane.
99.9%
Uptime SLA
p99 Latency
Tracked
06
Automated Resilience & Recovery
Self-healing systems with automatic failover, checkpointing, and state synchronization. Designed for 24/7 operation with graceful handling of chain reorganizations and network partitions.
< 60 sec
Failover Time
Automated
Reorg Handling
benefits
DELIVERABLES
Business Outcomes: From Infrastructure to Advantage
Our EVM-to-Cosmos Oracle Message Relayer development delivers more than just code. We build the critical infrastructure that turns cross-chain data into a competitive edge for your application.
01
Production-Ready Relayer Infrastructure
We deliver a fully managed, horizontally scalable relayer service with automated failover, designed for 24/7 operation. This eliminates the operational overhead of running your own validator nodes and message queues.
99.9%
Uptime SLA
< 2 sec
Median Latency
02
Secure, Audited Message Verification
We implement and audit the on-chain verification logic (e.g., IBC light clients, optimistic verification) on both EVM and Cosmos chains, ensuring data integrity and preventing fraudulent state transitions.
100%
Code Coverage
Formal Verification
Security Standard
03
Rapid Time-to-Market
Leverage our battle-tested templates for common oracle patterns (price feeds, random number generation, event triggers). We focus on your custom business logic, not the boilerplate.
2-4 weeks
Avg. Deployment
Pre-built
Adapter Library
04
Cost-Optimized Cross-Chain Operations
Our relayers are engineered for gas efficiency on EVM chains and optimized fee consumption on Cosmos. We implement batching, fee estimation, and nonce management to minimize operational costs.
Up to 40%
Gas Savings
Dynamic
Fee Management
05
Comprehensive Monitoring & Alerting
Gain full visibility with our integrated dashboard for message queue health, gas spending, latency percentiles, and failed transaction analysis. Proactive alerts keep your data flows reliable.
Real-time
Health Metrics
PagerDuty/Slack
Alert Integration
06
Future-Proof Protocol Flexibility
Our architecture is designed for extensibility. We build with modular adapters, making it straightforward to integrate new EVM L2s (Arbitrum, Optimism) or Cosmos app-chains as your needs evolve.
Modular
Adapter Design
Multi-Chain
Ready
Fixed-Scope, Fixed-Price Delivery
Structured Development Packages
Choose the package that aligns with your project's scale and operational needs. All packages include core relayer development with IBC integration and a comprehensive security audit.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Custom IBC Relayer Smart Contracts | |||
EVM (Solidity) & Cosmos (CosmWasm) Modules | |||
Comprehensive Security Audit Report | |||
Deployment to Testnet & Mainnet | |||
24/7 Monitoring & Alerting Dashboard | |||
Guaranteed Uptime SLA | 99.5% | 99.9% | |
Incident Response Time | Best Effort | < 12 hours | < 1 hour |
Post-Launch Support & Maintenance | 1 month | 3 months | 12 months |
Custom Oracle Adapter Development | 1 adapter | Unlimited | |
Estimated Delivery Timeline | 6-8 weeks | 8-12 weeks | Custom |
Starting Price | $45,000 | $95,000 | Custom Quote |
how-we-deliver
STRUCTURED DELIVERY
Our Delivery Methodology: From Specification to Mainnet
We deliver production-ready EVM-to-Cosmos relayers through a proven, transparent process. Each phase is designed to de-risk development, ensure security, and accelerate your time-to-market.
01
Phase 1: Architecture & Specification
We begin with a collaborative deep-dive to define your exact cross-chain requirements. Deliverables include a detailed technical specification, gas cost analysis, and a finalized architecture diagram for the relayer, smart contracts, and off-chain infrastructure.
3-5 days
Spec Finalization
100%
Requirement Clarity
02
Phase 2: Core Smart Contract Development
Our engineers build the on-chain message verification and dispatch logic. We implement using battle-tested libraries (OpenZeppelin, CosmWasm) and follow security-first patterns for both EVM (Solidity/Vyper) and Cosmos SDK chains.
2-3 weeks
Development Time
Gas-Optimized
Code Quality
03
Phase 3: Off-Chain Relayer & Infrastructure
We develop the high-availability relayer service that listens, proves, and forwards messages. This includes automated monitoring, alerting, failover mechanisms, and deployment on your chosen cloud or bare-metal infrastructure.
99.9%
Target Uptime SLA
< 30 sec
Median Relay Latency
05
Phase 5: Mainnet Launch & Handover
We manage the coordinated mainnet deployment of contracts and relayer infrastructure. Post-launch, we provide comprehensive documentation, operational runbooks, and knowledge transfer to your team for long-term ownership.
Smooth Cutover
Zero-Downtime Goal
Full Docs
Client Handoff
06
Ongoing: Monitoring & Support
We offer optional SLA-backed support packages for monitoring relayer health, performance metrics, and protocol upgrades. Proactive alerts for failed transactions, queue backlogs, and chain reorganizations.
24/7
Monitoring
SLA Options
Enterprise Support
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
We architect, develop, and audit custom Solidity/Rust smart contracts that form the immutable backbone of your dApp. Our code is built for security first, utilizing battle-tested patterns from OpenZeppelin and rigorous internal review processes.
From tokenomics to complex DeFi logic, we deliver contracts that are gas-optimized, upgradeable, and secure by design.
- Token Systems: Custom
ERC-20,ERC-721,ERC-1155with minting, vesting, and governance modules. - DeFi Protocols: Automated Market Makers (AMMs), lending/borrowing pools, and yield aggregators.
- Enterprise Logic: Multi-signature wallets, custom oracles, and permissioned access controls.
- Full Lifecycle Support: Development, comprehensive testing, deployment, and post-launch monitoring.
EVM-to-Cosmos Relayer
Frequently Asked Questions
Common questions from CTOs and technical leads about building secure, high-performance cross-chain oracle relayers.
A standard EVM-to-Cosmos Oracle Relayer with core messaging and verification takes 3-5 weeks from kickoff to mainnet deployment. Complex integrations (e.g., custom consensus, multi-signer setups, advanced slashing logic) can extend to 8-12 weeks. We provide a detailed project plan with weekly milestones after the initial technical scoping session.
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