Production-ready smart contracts built for security, scalability, and compliance.
We architect and deploy custom, audited smart contracts that form the core logic of your dApp. Our development process is built on industry-leading security standards and battle-tested patterns to mitigate risk from day one.
Deploy with confidence using contracts that have passed rigorous internal and third-party audits.
Our development stack includes:
OpenZeppelin libraries and custom security extensions.Hardhat and Foundry.Deliverables you receive:
EVM-compatible chains.We architect and deploy the robust, scalable backend infrastructure that powers your multi-chain NFT marketplace. Our focus is on security, performance, and seamless interoperability.
Real-time liquidity and listing aggregation across Arbitrum, Optimism, zkSync, and Base. Our engine normalizes data from disparate rollup environments into a single, queryable API, ensuring users see the best prices and availability.
Non-custodial order management with atomic cross-rollup settlement. We implement secure signature verification, prevent front-running with MEV-resistant strategies, and guarantee transaction finality.
High-performance indexing of ERC-721/1155 assets across all integrated chains. We cache and serve enriched metadata (images, traits) with CDN acceleration, eliminating RPC latency for end-users.
Intelligent gas estimation and sponsored transaction services for seamless user onboarding. Our system batches transactions and leverages L2 gas tokens to minimize costs for your users.
REST & GraphQL endpoints with rate limiting, authentication, and comprehensive analytics. Built for scale to handle high-volume trading activity and integrate seamlessly with your frontend.
Proactive threat detection, real-time alerting, and automated incident response. Our infrastructure undergoes regular third-party audits and adheres to SOC 2 Type II compliance standards.
We deliver a production-ready, secure backend that drives user growth and revenue. Here are the concrete outcomes you can expect.
Aggregate NFT listings from major L2s (Arbitrum, Optimism, Base, zkSync) and Ethereum mainnet. Unlock 100% of the market for your users in a single interface.
Our indexer provides sub-second price updates across all integrated marketplaces (Blur, OpenSea, LooksRare). Ensure users always see the best available price.
Atomic cross-rollup settlement powered by audited smart contracts and secure bridging infrastructure. Eliminate failed transactions and user fund risk.
High-throughput GraphQL/REST APIs with enterprise-grade load balancing and caching. Handle 10,000+ requests per second without performance degradation.
Deploy a fully functional, white-labeled aggregator backend in weeks, not months. Our modular architecture integrates seamlessly with your frontend.
Intelligent routing to minimize gas costs and platform fees. Our algorithms save users an average of 15-30% on transaction costs versus manual swaps.
A structured approach to building and scaling a cross-rollup NFT marketplace aggregator backend, from MVP to full-scale production.
| Core Capability | Foundation Tier | Growth Tier | Scale Tier |
|---|---|---|---|
Multi-Rollup Indexing & Aggregation | Single Chain (e.g., Arbitrum) | 2-3 Major L2s (Arbitrum, Base, zkSync) | Full Suite (Arbitrum, Base, Optimism, zkSync, Starknet) |
Smart Contract Suite (Aggregator) | Basic Aggregator Router | Advanced Router with MEV Protection | Custom Router with Fee Optimization & Slippage Controls |
Real-time Order Book & Price API | Basic REST API (5s refresh) | WebSocket API + Advanced Filters | Low-latency WebSocket + Historical Analytics |
Security & Audits | Automated Scanning & Basic Review | Full Smart Contract Audit (1 Firm) | Comprehensive Audit (2 Firms) + Bug Bounty Setup |
Deployment & DevOps | Manual Deployment Guide | Automated CI/CD Pipeline Setup | Managed Infrastructure with 99.9% SLA |
Ongoing Support & Maintenance | Community Support | Business Hours Support | 24/7 Priority Support with 4h SLA |
Custom Feature Development | Not Included | Up to 2 Custom Features | Dedicated Engineering Sprint |
Estimated Timeline | 4-6 Weeks | 8-12 Weeks | 12-16 Weeks |
Starting Engagement | $25,000 | $75,000 | Custom Quote |
A structured, four-phase approach to deliver a secure, scalable, and production-ready cross-rollup NFT marketplace backend. We focus on rapid iteration, transparent communication, and measurable outcomes.
We conduct a technical deep-dive to define your specific requirements for multi-chain liquidity, user flows, and fee structures. The outcome is a detailed technical specification and architecture diagram for your custom aggregator.
Our engineers build the core aggregation engine, price routing logic, and deploy audited smart contracts for order settlement. We implement security-first development using OpenZeppelin libraries and Solidity 0.8+.
We integrate with your chosen rollup stacks (e.g., Arbitrum, Optimism, zkSync) and bridge protocols (e.g., Across, Hop). This phase ensures seamless, gas-optimized cross-chain asset transfers and unified liquidity access.
We deploy the backend to your infrastructure, configure real-time monitoring with Chainscore's dashboards, and conduct a full knowledge transfer. You receive 24/7 system observability and detailed operational documentation.
Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy the foundational logic for your protocol. Our team delivers audit-ready Solidity/Vyper code with OpenZeppelin standards, gas optimization, and comprehensive testing.
From tokenomics to governance, we translate your business rules into immutable, secure on-chain operations.
ERC-20, ERC-721, ERC-1155 with minting, vesting, and staking logic.Get clear answers on development timelines, costs, security, and ongoing support for your multi-chain NFT marketplace backend.
A production-ready MVP for a cross-rollup NFT aggregator backend typically takes 4-8 weeks from kickoff to mainnet deployment. This includes architecture design, smart contract development for indexers and escrow, API gateway setup, and integration with 2-3 target rollups (e.g., Arbitrum, Optimism, zkSync). Complex features like real-time floor price aggregation or custom royalty logic can extend the timeline. We provide a detailed, phase-gated project plan at the start.
Our experts will offer a free quote and a 30min call to discuss your project.