We architect and deploy custom smart contracts that form the secure, immutable backbone of your application. Our development process is built on Solidity 0.8+ with OpenZeppelin libraries and follows industry-standard security patterns to mitigate risks like reentrancy and overflow.
LABS
Services
API Gateway for Legacy Enterprise Integration
We build robust middleware APIs that connect your corporate ERP, treasury, and accounting systems (SAP, Oracle) directly to on-chain B2B payment networks, enabling real-time, low-cost cross-border settlements.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for your Web3 product.
- End-to-End Development: From initial architecture and
ERC-20/ERC-721token design to complex DeFi logic and DAO governance systems. - Security-First Approach: Every contract undergoes manual code review and automated analysis before deployment. We provide a clear audit path.
- Gas Optimization: We write efficient code to minimize transaction costs, a critical factor for user adoption and scalability.
Deliver a secure, auditable foundation. We ensure your core business logic is executed exactly as designed, without compromise.
key-features-cards
ENTERPRISE-GRADE
Core Capabilities of Our Integration Gateway
Our API Gateway bridges your legacy systems to Web3 with production-ready reliability, security, and developer velocity. Built for CTOs who need to ship, not experiment.
01
Legacy System Connectors
Pre-built, secure adapters for SAP, Oracle, SWIFT, and custom mainframes. We handle protocol translation, data normalization, and real-time event streaming to your blockchain layer.
20+
Pre-built Connectors
< 2 weeks
Integration Time
02
Enterprise-Grade Security
End-to-end encryption, SOC 2 Type II compliant infrastructure, and granular role-based access control (RBAC). All integrations are penetration tested before deployment.
SOC 2
Compliant
Zero
Security Incidents
03
High-Availability & Monitoring
Guaranteed 99.9% uptime SLA with multi-region failover. Real-time dashboards provide visibility into transaction health, latency, and system performance.
99.9%
Uptime SLA
< 100ms
P99 Latency
04
Smart Contract Orchestration
Automate complex, multi-step business logic across EVM chains (Ethereum, Polygon, Arbitrum). Our engine handles gas management, nonce sequencing, and failure rollbacks.
5+
EVM Chains
Sub-second
Execution
05
Compliance & Audit Trail
Immutable logs for every API call and on-chain transaction. Generate reports for financial audits (SOX) and regulatory compliance (MiCA, Travel Rule) with a single click.
7+ years
Data Retention
FIPS 140-2
Cryptography
06
Developer-First Tooling
REST & GraphQL APIs, comprehensive SDKs, and a local sandbox for testing. Integrate with your existing CI/CD pipeline and monitoring stack (Datadog, Splunk).
5 SDKs
Languages Supported
24/7
Dev Support
benefits
DELIVERABLES
Business Outcomes for Your Finance & Tech Teams
Our API Gateway for Legacy Enterprise Integration is engineered to deliver measurable results. We focus on accelerating development, reducing operational overhead, and ensuring enterprise-grade security for your core financial systems.
01
Accelerated Time-to-Market
Deploy a secure, production-ready blockchain integration layer in under 3 weeks. Our pre-built connectors and standardized APIs eliminate months of custom development, allowing your teams to launch new products faster.
< 3 weeks
Deployment Time
80%
Dev Time Saved
02
Unified & Secure Data Access
A single, auditable gateway for all on-chain data. We implement role-based access control (RBAC), SOC 2-compliant security patterns, and encrypted data flows to protect your legacy systems from direct blockchain exposure.
SOC 2
Compliance
Zero Trust
Architecture
03
Operational Cost Reduction
Consolidate disparate integration efforts and reduce infrastructure management. Our managed service model cuts costs associated with node operations, monitoring, and blockchain DevOps by up to 60%.
60%
Ops Cost Reduction
24/7
Managed Support
04
Developer Productivity Boost
Provide your engineering teams with a RESTful/GraphQL API that abstracts blockchain complexity. Developers can query on-chain data and submit transactions using familiar tools, accelerating feature development.
REST/GraphQL
API Standard
99.9%
API Uptime SLA
05
Regulatory & Audit Readiness
Built-in transaction logging, immutable audit trails, and compliance-focused data structuring. Our gateway ensures all on-chain interactions are traceable and reportable for internal audits and regulatory requirements.
Immutable
Audit Trail
Real-time
Monitoring
06
Scalable & Future-Proof Architecture
Designed to handle enterprise transaction volumes with sub-second latency. Our modular architecture supports multi-chain strategies (EVM, Solana, Cosmos) and can scale to process 10,000+ TPS without refactoring your core systems.
10k+ TPS
Scalability
< 1 sec
Latency
The Infrastructure Decision
Build vs. Buy: Integrating Legacy Systems with Blockchain
A detailed comparison of the time, cost, and risk involved in developing a custom API gateway in-house versus leveraging Chainscore's enterprise-grade platform.
| Integration Factor | Build In-House | Chainscore API Gateway |
|---|---|---|
Time to Initial Integration | 6-12 months | 2-4 weeks |
Initial Development Cost | $250K - $750K+ | From $50K |
Security & Audit Overhead | High (Your Responsibility) | Built-in (SOC 2, Audited Code) |
Ongoing Maintenance & Updates | Dedicated 3-5 person team | Fully Managed Service |
Supported Legacy Protocols | Custom Development per System | Pre-built for SAP, SWIFT, FIX, etc. |
Blockchain Protocol Support | Limited to Initial Build | Ethereum, Polygon, Arbitrum, Base, Solana |
Uptime & Reliability SLA | Your Infrastructure | 99.95% Enterprise SLA |
Total Cost of Ownership (Year 1) | $500K - $1.2M+ | $150K - $300K |
how-we-deliver
PREDICTABLE INTEGRATION
Our Phased Delivery Methodology
We de-risk your legacy system modernization with a structured, milestone-driven approach. Each phase delivers tangible value, ensuring alignment with your business objectives and technical requirements.
01
Phase 1: Discovery & Architecture
We conduct a comprehensive audit of your existing APIs, data models, and business logic to design a secure, scalable gateway architecture. This phase establishes the technical blueprint and project roadmap.
2-3 weeks
Typical Duration
100%
Requirements Locked
02
Phase 2: Core Gateway Development
Our engineers build the secure API Gateway layer with authentication, rate limiting, and protocol translation (REST to Web3 RPC). Includes unit testing and initial staging deployment.
3-4 weeks
Development Sprint
99.9%
Test Coverage Target
03
Phase 3: Smart Contract Integration
We develop and audit the critical smart contracts that act as the on-chain logic layer, ensuring secure transaction processing and data anchoring from your legacy systems.
Audited
Security Standard
EVM & L2s
Chain Compatibility
04
Phase 4: Staging & Security Audit
Full integration testing in a production-like environment. We perform penetration testing and a final security review before sign-off, ensuring enterprise-grade resilience.
OWASP
Compliance
< 50ms
P99 Latency SLA
05
Phase 5: Production Deployment
Managed go-live with zero-downtime deployment strategies. We provide comprehensive monitoring dashboards, documentation, and knowledge transfer to your team.
24/7
Launch Support
99.95%
Uptime SLA
06
Phase 6: Ongoing Support & Scaling
Post-launch maintenance, performance optimization, and scaling support. We offer flexible retainer models to handle increased load and new feature integration.
< 1 hour
Critical Response
Monthly
Health Reports
security-compliance
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy custom smart contracts that form the backbone of your dApp. Our development process is built for security and scale from day one, ensuring your core logic is robust and future-proof.
- Full Lifecycle Support: From initial design and
Solidity/Rustdevelopment to deployment, verification, and ongoing maintenance. - Security-First Approach: All code follows
OpenZeppelinstandards and undergoes internal audits before deployment. We prepare for formal audits withSlitherandMythX. - Gas Optimization: We write efficient code to minimize transaction costs, a critical factor for user adoption and protocol sustainability.
We don't just write code; we engineer the financial and operational rules of your protocol with precision.
Our team specializes in complex contract systems:
- DeFi Primitives: Custom
AMMs, lending/borrowing pools, staking mechanisms, and yield aggregators. - NFT Ecosystems:
ERC-721A,ERC-1155marketplaces with advanced minting, royalties, and metadata logic. - Cross-Chain & Layer 2: Development for
EVM-compatible chains (Arbitrum,Polygon,Base) andSolanausingAnchor.
Deliverables you receive:
- Production-ready, audited source code with comprehensive documentation.
- Deployment scripts and configuration for testnet and mainnet.
- A technical spec document detailing contract architecture and interactions.
- 2-week MVP sprints for rapid prototyping and iteration.
API Gateway for Legacy Systems
Frequently Asked Questions
Common questions from CTOs and enterprise architects evaluating blockchain integration for their existing infrastructure.
Typical deployment is 2-4 weeks from kickoff to production-ready integration. This includes discovery, configuration of our pre-built adapters, security hardening, and staging environment deployment. Complex multi-system integrations or custom adapter development can extend this to 6-8 weeks. We provide a detailed project plan within the first 3 business days.
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