Free 30-min Web3 Consultation
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Custom DeFi Protocol Development
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Full-Stack Web3 dApp Development
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Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
LABS
Services

Layer 3 AppChain Bridge Development

Design and deploy specialized bridges that connect your sovereign Layer 3 application-specific rollup to Layer 2s and Layer 1s, unlocking liquidity and composability.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by Web3 experts.

We architect and deploy custom smart contracts for DeFi, NFTs, and enterprise applications. Our development process ensures security-first code and gas-optimized execution.

Deliver a battle-tested, auditable codebase that forms the secure foundation of your Web3 product.

  • Full Lifecycle Development: From ideation and Solidity/Rust coding to deployment on EVM/Solana/Cosmos chains.
  • Security & Audits: Rigorous internal review, integration with OpenZeppelin libraries, and preparation for third-party audits.
  • Key Deliverables: Production-ready contracts, comprehensive documentation, and deployment scripts for 2-week MVP timelines.
key-features-cards
ARCHITECTURE

Engineered for Sovereign Rollup Interoperability

Our bridge infrastructure is purpose-built for sovereign rollups, enabling seamless asset and data transfer across isolated L2/L3 environments. We deliver the foundational interoperability layer your application-specific chain requires.

benefits
TANGIBLE RESULTS

Business Outcomes: From Isolated Chain to Integrated Hub

Our Layer 3 AppChain Bridge Development transforms your sovereign chain from a siloed environment into a high-value, interconnected hub. We deliver measurable outcomes that drive adoption, liquidity, and developer activity.

01

Multi-Chain Liquidity Access

Deploy a secure bridge to Ethereum, Arbitrum, and Base, unlocking billions in TVL for your native assets. Enable seamless cross-chain swaps and composability, directly increasing your chain's utility and attracting DeFi protocols.

Ethereum, Arbitrum, Base
Primary Connectors
Zero-Day
New Chain Support
02

Developer Onboarding Velocity

Provide developers with battle-tested SDKs and unified APIs, reducing integration time from months to weeks. Our modular bridge architecture allows teams to deploy dApps that work across your L3 and connected L2s instantly.

< 4 weeks
SDK Integration
Unified API
Single Interface
03

Enterprise-Grade Security Posture

Receive a bridge secured by formal verification and audits from firms like Spearbit. We implement multi-sig governance, fraud proofs, and continuous monitoring, providing the institutional-grade security required for high-value asset transfers.

Spearbit Audited
Security Standard
24/7
Threat Monitoring
04

Reduced Time-to-Market

Leverage our pre-audited, modular bridge components to launch your production-ready cross-chain capability in 6-8 weeks, not 6-8 months. Avoid the pitfalls of in-house development and focus on your core application logic.

6-8 weeks
Production Launch
Pre-Audited
Core Modules
05

Enhanced Token Utility & Value

Design bridge economics that incentivize holding and using your native token for fees and governance. Create sustainable revenue streams and strengthen your token's fundamental value proposition within a multi-chain ecosystem.

Fee Capture
Revenue Model
Governance
Token Utility
06

Future-Proof Interoperability

Build on a flexible architecture designed for the modular future. Our bridges are prepared for integration with EigenLayer AVS, AltLayer, and other emerging infra, ensuring your chain remains at the forefront of interoperability.

EigenLayer Ready
Architecture
Modular Design
Upgrade Path
Scalable Bridge Solutions

Structured Development Path: From MVP to Full Suite

A phased approach to Layer 3 AppChain bridge development, balancing speed, security, and long-term scalability for startups and enterprises.

Feature / CapabilityMVP LaunchProduction ScaleEnterprise Suite

Custom Bridge Smart Contracts

Security Audit (2 Firms)

Post-Launch

Pre-Launch

Pre-Launch + Quarterly

Supported Asset Types

Native Token

ERC-20, ERC-721

Multi-Asset (incl. ERC-1155)

Transaction Finality

< 5 min

< 30 sec

< 2 sec

Daily Throughput Limit

10,000 TX

100,000 TX

Unlimited

Relayer Infrastructure

Managed Basic

Managed High-Availability

Dedicated Geo-Redundant

Monitoring & Alerting

Basic Dashboard

Advanced Analytics + Alerts

Custom SLA (99.9%) & 24/7 SRE

Time to Deploy

4-6 weeks

8-12 weeks

12-16 weeks

Ongoing Support

Community

Business Hours

24/7 Dedicated Engineer

Typical Investment

$50K - $100K

$150K - $300K

Custom Quote

how-we-deliver
A STRUCTURED APPROACH

Our Delivery Process: From Architecture to Mainnet

We deliver production-ready Layer 3 AppChain bridges through a transparent, milestone-driven process designed for technical founders and CTOs who need predictable timelines and enterprise-grade security.

01

1. Architecture & Specification

We define your bridge's core architecture, including consensus mechanism, data availability layer, and cross-chain message passing protocol (e.g., IBC, Axelar, Wormhole). This phase delivers a comprehensive technical specification document for your team's review.

5-7 days
Specification Finalization
3+ Options
Architecture Reviewed
02

2. Core Bridge Development

Our engineers build the bridge's smart contracts (Solidity/Rust) and relayers using battle-tested libraries. We implement security-first patterns, including multi-sig governance, pause mechanisms, and rate limiting from day one.

OpenZeppelin
Security Standards
2-3 weeks
Core Development
03

3. Security Audit & Testing

Every bridge undergoes rigorous internal testing and a formal audit by a top-tier third-party firm. We provide a detailed vulnerability report and implement all critical recommendations before deployment.

100%
Critical Issues Resolved
Certik / Halborn
Audit Partners
04

4. Testnet Deployment & Integration

We deploy the bridge to a testnet environment (e.g., Sepolia, Arbitrum Goerli) and assist your team with integration. This includes SDK setup, wallet connectivity, and end-to-end transaction flow validation.

< 3 days
Deployment Time
Full SDK
Integration Support
05

5. Mainnet Launch & Monitoring

We manage the secure mainnet deployment with phased rollouts. Post-launch, we provide 24/7 monitoring, alerting, and performance dashboards to ensure 99.9%+ uptime and rapid incident response.

99.9%
Uptime SLA
24/7
Monitoring & Support
06

6. Documentation & Handoff

We deliver comprehensive technical documentation, operational runbooks, and conduct knowledge transfer sessions with your engineering team, ensuring you have full ownership and operational control.

Complete
Source Code Handoff
2 Sessions
Knowledge Transfer
security
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for scale and compliance.

We architect and deploy custom smart contracts that form the backbone of your Web3 product. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and comprehensive audit trails to protect your assets and users.

  • Token Standards: ERC-20, ERC-721, ERC-1155, and custom implementations.
  • DeFi Protocols: Automated market makers (AMMs), staking pools, and yield aggregators.
  • Enterprise Logic: Multi-signature wallets, vesting schedules, and governance modules.
  • Deliverables: Full test suites, deployment scripts, and technical documentation.

We deliver audit-ready code in 2-4 weeks, reducing your time-to-market while ensuring compliance with industry security standards like EIP specifications.

Technical & Commercial Insights

Frequently Asked Questions on AppChain Bridge Development

Get clear, specific answers to the most common questions CTOs and founders ask when evaluating a partner for their cross-chain bridge.

For a standard, audited AppChain bridge connecting to 2-3 major chains (e.g., Ethereum, Arbitrum, Polygon), we deliver a production-ready solution in 4-6 weeks. This includes architecture, smart contract development, security audits, and a basic front-end integration. Complex multi-chain or custom consensus mechanisms can extend this to 8-12 weeks. We provide a detailed project plan with weekly milestones after the initial scoping call.

ENQUIRY

Get In Touch
today.

Our experts will offer a free quote and a 30min call to discuss your project.

NDA Protected
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team
Layer 3 AppChain Bridge Development | Chainscore Labs | ChainScore Guides