We architect and deploy audit-ready smart contracts that form the secure backbone of your protocol. Our development process is built on OpenZeppelin standards and battle-tested security patterns, ensuring reliability from day one.
LABS
Services
Cross-Chain NFT Aggregator SDK Development
We deliver a production-ready SDK that integrates aggregated NFT listings and liquidity from Ethereum, Solana, and other major chains into your application, solving fragmentation for multi-chain projects.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts for your protocol's foundation.
- Custom Logic: Tailored
Solidity 0.8+development for DeFi, NFTs, DAOs, and enterprise use cases. - Security-First: Comprehensive unit/integration testing, formal verification, and pre-audit reviews.
- Gas Optimization: Expert tuning for up to 40% lower transaction costs and efficient on-chain execution.
- Full Lifecycle: From architecture and development to deployment, verification, and upgrade management.
We deliver contracts you can stake your reputation on, with a focus on security, maintainability, and clear documentation for your team.
key-features-cards
ENGINEERED FOR SCALE
Core SDK Capabilities
Our SDK delivers production-ready tooling for building high-performance NFT marketplaces. We provide the battle-tested infrastructure so you can focus on your product.
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your NFT Project
Our Cross-Chain NFT Aggregator SDK delivers concrete, measurable results. We focus on technical execution that directly impacts your project's growth, security, and market position.
01
Multi-Chain Liquidity Access
Integrate a single SDK to access aggregated NFT liquidity from Ethereum, Polygon, Solana, and Arbitrum. Unlock a user base 5x larger than any single chain.
5+
Supported Chains
100%
API Coverage
02
Secure, Audited Smart Contracts
Deploy battle-tested aggregation and settlement contracts. Every line is audited by industry leaders like CertiK and follows OpenZeppelin security patterns.
100%
Audit Coverage
0
Critical Bugs
03
Reduced Time-to-Market
Go from concept to live deployment in weeks, not months. Our modular SDK and pre-built connectors for major marketplaces eliminate 80% of development time.
< 4 weeks
Integration Time
80%
Dev Time Saved
04
Enterprise-Grade Infrastructure
Built on a fault-tolerant, multi-region node infrastructure. Guarantee 99.9% uptime for your marketplace with automatic failover and <100ms API latency.
99.9%
Uptime SLA
< 100ms
P95 Latency
05
Gas Optimization & Cost Savings
Our cross-chain routing algorithms and batch transaction bundling reduce user gas fees by up to 40% compared to native bridge solutions.
Up to 40%
Gas Savings
1-Click
Batch Swaps
06
Full Ownership & Customization
Receive a white-label SDK with full source code ownership. Customize every component—UI, fee structure, supported chains—to match your brand.
100%
Code Ownership
Unlimited
Customization
Strategic Infrastructure Decision
Build vs. Buy: The Cross-Chain NFT Aggregator Dilemma
A detailed comparison of the total cost, risk, and time investment required to build a cross-chain NFT aggregator from scratch versus leveraging Chainscore's production-ready SDK.
| Key Factor | Build In-House | Buy with Chainscore SDK |
|---|---|---|
Time to Market (MVP) | 6-12 months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $25K - $75K |
Security Audit & Risk | High (unaudited, custom code) | Low (pre-audited, battle-tested) |
Supported Chains (Initial) | 1-2 chains (Ethereum + 1) | 5+ chains (EVM & non-EVM) |
Ongoing Maintenance | Full internal team required | Managed infrastructure & updates |
Aggregation Features | Basic listings only | Advanced: Sweeping, Bundling, Rarity |
Total Cost of Ownership (Year 1) | $400K - $1M+ | $75K - $200K |
Integration Complexity | High (protocol APIs, indexing, wallets) | Low (single SDK, unified API) |
Team Requirements | 5-10 senior blockchain engineers | 1-2 full-stack developers |
Focus Shift | Infrastructure, not product | Core product & user experience |
how-we-deliver
TRANSPARENT & PREDICTABLE
Our Delivery Process: From Integration to Launch
We deliver your cross-chain NFT aggregator SDK in defined phases, ensuring technical alignment, rapid iteration, and a production-ready launch. Our process minimizes your team's overhead and de-risks development.
01
Phase 1: Discovery & Architecture
We conduct a technical deep-dive to define your target chains (Ethereum, Solana, Polygon), user flows, and SDK scope. You receive a detailed technical specification and architecture diagram.
1-2 weeks
Duration
100%
Specification Complete
02
Phase 2: Core SDK Development
Our engineers build the core aggregation engine, multi-chain indexers, and unified API. Development follows OpenZeppelin security patterns and is modular for easy future upgrades.
4-6 weeks
Development Sprint
Solana, EVM, more
Chain Support
04
Phase 4: Staging & Go-Live
We deploy to your staging environment for final testing and load simulation. Upon your approval, we manage the production deployment and provide launch support.
1 week
Deployment Window
24/7
Launch Support
tech-stack
ENTERPRISE-GRADE FOUNDATION
Built on Proven Protocols & Infrastructure
Your cross-chain NFT aggregator is built on battle-tested protocols and infrastructure, ensuring security, scalability, and seamless interoperability from day one.
01
Secure Smart Contract Framework
Production-ready smart contracts built with Solidity 0.8+ and OpenZeppelin libraries, following established security patterns for minting, bridging, and marketplace logic.
OpenZeppelin
Security Standard
Solidity 0.8+
Language Version
02
Multi-Chain Bridge Integration
Native SDK integrations with leading cross-chain messaging protocols like LayerZero, Axelar, and Wormhole for secure NFT transfers across EVM and non-EVM chains.
LayerZero
Primary Protocol
EVM & Non-EVM
Chain Support
03
High-Performance Indexing
Real-time NFT data aggregation from major marketplaces (OpenSea, Blur, Magic Eden) using The Graph subgraphs and custom indexers for sub-second query responses.
< 1 sec
Query Latency
The Graph
Indexing Stack
04
Reliable Node Infrastructure
Dedicated, load-balanced RPC endpoints powered by Alchemy and QuickNode, providing 99.9% uptime SLA and enterprise-grade reliability for mainnet and testnets.
99.9%
Uptime SLA
Alchemy
Provider
Cross-Chain NFT Aggregator SDK
Frequently Asked Questions
Get clear answers on timelines, costs, and technical capabilities for your SDK development project.
A production-ready, core SDK with basic aggregation across 2-3 major chains (EVM-based) typically takes 4-6 weeks. Complex deployments with custom liquidity routing, multi-wallet support, and 5+ chains can extend to 8-12 weeks. We provide a detailed sprint-by-sprint roadmap after the initial technical scoping.
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