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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

Soulbound Token (SBT) Interoperability Bridge

We design and deploy secure bridges that enable the portable, non-transferable attestations of Soulbound Tokens across ecosystems while maintaining their non-financial properties.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by Web3-native engineers.

We architect and deploy custom smart contracts that are secure, gas-optimized, and tailored to your tokenomics. Our process delivers audit-ready code from day one, using battle-tested patterns from OpenZeppelin and Solmate.

  • Security-First Development: Full test coverage, formal verification, and integration of multi-sig wallets and timelocks.
  • Gas Optimization: Expert-level Solidity to minimize transaction costs, crucial for high-frequency DeFi protocols.
  • Full-Stack Integration: Seamless connection to your frontend via ethers.js/web3.js and backend APIs.

We don't just write code; we deliver a production-grade system with documented upgrade paths and a 99.9% reliability SLA for core functions.

key-features-cards
BUILT FOR ENTERPRISE SCALE

Core Bridge Architecture & Capabilities

Our SBT Interoperability Bridge is engineered for production-grade reliability, security, and performance. We deliver a modular architecture that future-proofs your identity layer across any EVM or non-EVM chain.

01

Modular & Multi-Chain Architecture

Deploy a single, unified bridge supporting Ethereum, Polygon, Arbitrum, Base, and Solana. Our modular design allows for rapid integration of new chains in under 2 weeks, eliminating vendor lock-in and future-proofing your infrastructure.

5+
Chains Supported
< 2 weeks
New Chain Integration
02

Zero-Knowledge Proof Verification

Secure, trust-minimized state attestation using zk-SNARKs. We generate cryptographic proofs of SBT state on the source chain, enabling instant, verifiable transfers without relying on centralized validators or optimistic assumptions.

< 5 min
Proof Generation
Gas-optimized
On-Chain Verification
03

Enterprise-Grade Security & Audits

Every component undergoes rigorous security review. Our bridge contracts are audited by firms like Trail of Bits and Spearbit, with formal verification for critical state transition logic. Includes a $5M bug bounty program.

2+
Top-Tier Audits
$5M
Bug Bounty Cover
04

High-Availability Relayer Network

A decentralized, fault-tolerant network of relayers ensures 99.9% uptime for message passing. Automated failover and geo-distributed nodes prevent single points of failure, backed by real-time monitoring and alerting.

99.9%
Uptime SLA
< 30 sec
Failover Time
05

Gas-Optimized Smart Contracts

Our bridge contracts are built with Solidity 0.8+ and OpenZeppelin libraries, optimized for minimal gas consumption. We achieve up to 40% lower gas costs for end-users compared to standard bridge implementations.

40%
Avg. Gas Savings
ERC-5169
Standard Compliant
06

Comprehensive Monitoring & Analytics

Gain full visibility with our dashboard for tracking bridge health, transaction volume, and latency. Includes custom alerts for failed transfers, security events, and performance thresholds via Slack, PagerDuty, or webhook.

24/7
Real-Time Monitoring
< 1 min
Alert Latency
benefits
DELIVERABLES & IMPACT

Business Outcomes for Your Platform

Our SBT Interoperability Bridge delivers tangible infrastructure improvements, accelerating your product roadmap and reducing operational risk.

01

Multi-Chain Identity Unification

Deploy a single, canonical identity layer that aggregates SBTs from Ethereum, Polygon, and Base. Eliminate the complexity of managing separate user profiles across chains.

Why it matters: Users interact with a unified identity, increasing engagement and simplifying your UX.

3+
Primary Chains
1
Unified Graph
02

Gas-Optimized Claim & Verification

Implement gas-efficient, batched claim mechanisms for cross-chain SBT attestations. Built with Solidity 0.8+ and OpenZeppelin libraries for security and cost predictability.

Why it matters: Users can verify credentials with minimal fees, removing a critical adoption barrier.

< $0.50
Avg. Claim Cost
OpenZeppelin
Security Standard
03

Real-Time Reputation Portability

Enable sub-second syncing of reputation scores, DAO voting power, and access rights as SBTs move between ecosystems. Powered by our proprietary relay network.

Why it matters: Your platform can leverage a user's complete, live reputation instantly, enabling sophisticated gating and personalization.

< 1 sec
Sync Time
99.9%
Relay Uptime
04

Audited Bridge Security

Receive a production-ready bridge contract suite that has undergone formal verification and third-party audit. Includes a comprehensive security model for managing upgradeability and admin keys.

Why it matters: Mitigate the #1 risk in cross-chain systems with provably secure, maintainable code.

Third-Party
Security Audit
Formal Verification
Critical Modules
05

Modular Governance Integration

Plug-and-play modules for integrating with Snapshot, Tally, and custom DAO frameworks. Control SBT minting, bridging permissions, and fee parameters via governance.

Why it matters: Future-proof your system with decentralized control, aligning with Web3 ethos and reducing central points of failure.

Snapshot/Tally
Native Support
2 weeks
Integration Time
06

Full Observability & Analytics

Gain real-time dashboards for bridge health, cross-chain volume, and user adoption metrics. Monitor all events and sync states from a single pane of glass.

Why it matters: Make data-driven decisions on ecosystem expansion and user incentives with complete operational visibility.

Real-Time
Dashboards
100%
Event Indexing
Strategic Decision Analysis

Build vs. Buy: SBT Bridge Development

A detailed comparison of the total cost, risk, and time investment required for developing a secure, cross-chain Soulbound Token bridge in-house versus partnering with Chainscore Labs.

FactorBuild In-HouseChainscore Managed Service

Time to Production

6-12 months

4-8 weeks

Initial Development Cost

$150K - $400K+

$50K - $150K

Security Audit & Penetration Testing

Additional $30K - $100K

Included

Ongoing Maintenance & Upgrades

1-3 Full-Time Engineers

Fully Managed (Optional SLA)

Cross-Chain Protocol Support

Custom Integration per chain

Pre-built for 10+ EVM & non-EVM chains

Disaster Recovery & Monitoring

Build from scratch

24/7 Monitoring & Alerting Included

Total Year 1 Cost (Est.)

$250K - $600K+

$80K - $200K

Guaranteed Uptime SLA

Not Applicable

99.9%

Expertise Required

Specialized Bridge & Cryptography Team

Your Core Team + Our Specialists

how-we-deliver
PROVEN METHODOLOGY

Our Development & Delivery Process

A structured, security-first approach to delivering production-ready SBT bridges. We combine deep protocol expertise with agile delivery to ensure your interoperability solution launches on time and to spec.

01

Discovery & Architecture Design

We conduct a technical deep-dive to map your token standards, target chains, and use cases. We deliver a detailed technical specification and architecture diagram for the bridge, including gas optimization strategies and security models.

1-2 weeks
Spec Delivery
5+ Standards
ERC-5114, 721, 1155
02

Smart Contract Development

Our team builds the core bridge logic, mint/burn modules, and governance contracts in Solidity 0.8+. We implement OpenZeppelin security patterns and conduct internal peer reviews for every commit.

100% Coverage
Unit Tests
OpenZeppelin
Security Base
03

Security Audit & Formal Verification

All bridge contracts undergo a rigorous third-party audit by firms like Spearbit or Code4rena. We integrate formal verification tools like Certora for critical state transitions to mathematically prove correctness.

Zero Critical
Audit Target
2+ Firms
Independent Review
04

Relayer & Frontend Integration

We deploy and configure secure, high-availability relayers for cross-chain message passing. We provide a customizable frontend SDK and admin dashboard for managing bridge operations and monitoring.

99.9% SLA
Relayer Uptime
< 1 sec
Message Finality
05

Staging & Mainnet Deployment

We manage the full deployment pipeline from testnet (Sepolia, Holesky) to mainnet. This includes contract verification, multisig wallet setup, and a comprehensive go-live checklist with your team.

48 hours
Deployment Window
Multi-sig
Governance Setup
06

Post-Launch Support & Monitoring

We provide 30 days of included support with 24/7 monitoring dashboards for bridge health, volume, and security events. Optional ongoing DevOps and upgrade management is available.

24/7
Monitoring
30 days
Included Support
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 ensures security-first design, gas optimization, and regulatory readiness from day one.

  • Audit-Ready Code: Built with Solidity 0.8+ and OpenZeppelin libraries, following established security patterns.
  • Full Lifecycle Support: From initial spec and development through to deployment, monitoring, and upgrade management.
  • Compliance by Design: Integrate features for ERC-20, ERC-721, or custom standards with built-in controls for sanctions screening and role-based access.

Reduce your time-to-market by weeks with battle-tested contract templates and a streamlined development workflow.

We deliver production-grade contracts with comprehensive documentation and test coverage exceeding 95%. Our focus is on creating secure, maintainable systems that scale with your user base without compromising on cost or performance.

Technical & Commercial FAQs

SBT Bridge Development: Key Questions

Get clear answers on timelines, costs, security, and our development process for building a custom Soulbound Token interoperability bridge.

A standard, production-ready SBT bridge from specification to mainnet deployment typically takes 4-6 weeks. This includes 1 week for architecture design, 2-3 weeks for core development and unit testing, and 1-2 weeks for security audit integration and final deployment. Complex multi-chain architectures or custom attestation logic can extend this to 8-10 weeks.

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
Soulbound Token (SBT) Bridge Development | Chainscore Labs | ChainScore Guides