We architect and deploy custom smart contracts on EVM-compatible chains (Ethereum, Polygon, Arbitrum) and Solana. Our development process is built for security-first deployment, ensuring your core logic is robust and resilient.
LABS
Services
Flow NFT-Based Access Control API
A production-ready API for implementing granular, NFT-gated access control on the Flow blockchain. We deliver secure, scalable systems where user identity and permissions are tied to verifiable, non-transferable digital assets.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by certified auditors for your Web3 application.
- From Audit to Mainnet: Contracts are built by developers who are also certified auditors, integrating best practices from day one.
- Full-Stack Integration: We deliver contracts with comprehensive test suites (>95% coverage) and deployment scripts for seamless CI/CD.
- Gas Optimization: Every contract is analyzed and optimized to reduce user transaction costs by 20-40% on average.
We don't just write code; we deliver a secure, auditable, and maintainable foundation for your product's growth.
key-features-cards
ENTERPRISE-GRADE NFT ACCESS CONTROL
Core API Capabilities We Deliver
Our Flow NFT-Based Access Control API provides the foundational building blocks for secure, scalable, and programmable membership, ticketing, and gated content systems. We deliver production-ready endpoints that integrate seamlessly into your existing stack.
01
Real-Time NFT Verification
Instant, on-chain verification of NFT ownership and metadata. Our API checks the Flow blockchain to confirm user holdings and token properties in < 200ms, enabling seamless access to gated features without wallet pop-ups.
< 200ms
Verification Latency
100%
On-Chain Accuracy
02
Programmable Access Rules
Define complex, multi-faceted access logic beyond simple ownership. Set rules based on specific token IDs, collection tiers, holding duration, or custom metadata attributes stored on-chain, all managed via our dashboard.
Unlimited
Rule Combinations
1-click
Rule Deployment
03
Scalable Event & Drop Management
Handle high-throughput NFT minting events and access-controlled drops with built-in rate limiting, anti-sybil mechanisms, and automated allowlist management. Designed for launches with 10,000+ concurrent users.
10k+
Concurrent Users
99.9%
Event Uptime SLA
04
Comprehensive Audit Logging
Every access attempt, mint, and rule change is logged with immutable timestamps and user identifiers. Generate compliance reports and analyze user behavior patterns directly from our admin panel or via webhook.
Immutable
Audit Trail
Real-time
Webhook Alerts
06
Enterprise Security & SLAs
Built on Flow's secure, resource-oriented Cadence language. Our infrastructure includes DDoS protection, private endpoints, and dedicated support. Backed by a 99.9% uptime SLA and 24/7 incident response.
99.9%
Uptime SLA
24/7
SOC2-aligned Support
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Product
Our Flow NFT-Based Access Control API delivers concrete, measurable results for your product's go-to-market and operational efficiency.
01
Secure, Audited Access Logic
Production-ready, gas-optimized smart contracts for membership, subscriptions, and gated content. Built on Flow's Cadence with formal verification patterns and comprehensive audit reports.
100%
On-chain Logic
Formal Verification
Security Standard
02
Rapid Integration & Deployment
Go from concept to live in under 3 weeks with our modular API and SDKs for React, Node.js, and mobile. Includes full testing suite and staging environment.
< 3 weeks
Time-to-Market
4+
SDK Frameworks
03
Enterprise-Grade Uptime & Support
Dedicated infrastructure with 99.9% SLA for API endpoints and indexers. Includes 24/7 monitoring, alerting, and priority developer support.
99.9%
Uptime SLA
< 1 sec
P95 Latency
04
Scalable User Onboarding
Seamless wallet creation and NFT minting flows supporting Blocto, Dapper, and Ledger. Handle thousands of concurrent mints during launch events.
10k+
Concurrent Users
3
Wallet Providers
05
Compliance & Analytics Suite
Built-in tools for KYC/AML checks, royalty enforcement, and real-time analytics dashboard tracking mints, holds, and engagement.
Real-time
Royalty Tracking
Custom Rules
Compliance Engine
06
Reduced Operational Overhead
Eliminate the need for in-house Flow/Cadence expertise. We manage all smart contract upgrades, indexer maintenance, and infrastructure scaling.
70%
Cost Reduction
0
DevOps Headcount
Choose the right plan for your project's scale and security needs
Implementation Tiers & Deliverables
A detailed breakdown of our service packages for Flow NFT-Based Access Control API development, from initial build to ongoing enterprise support.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Access Control Smart Contracts | |||
Pre-Deployment Security Audit | |||
Cadence Code Review & Optimization | Basic | Comprehensive | Comprehensive + Gas Analysis |
On-Chain Deployment & Configuration | Self-service guides | Assisted deployment | Full-service deployment & handover |
Integration SDK & API Documentation | |||
Post-Deployment Monitoring & Alerts | 7 days | 30 days | 12 months (SLA) |
Priority Technical Support | Email (48h) | Slack (24h) | Dedicated Engineer (4h) |
Custom Feature Development | Up to 20 hours | Unlimited (SOW) | |
Smart Contract Upgrade Management | Advisory | Full lifecycle management | |
Estimated Delivery Timeline | 3-4 weeks | 6-8 weeks | Custom (8+ weeks) |
Starting Price | $15,000 | $45,000 | Custom Quote |
use-cases
IMPLEMENTATION PATTERNS
Proven Applications Across Industries
Our Flow NFT-Based Access Control API powers secure, scalable membership and asset-gating for leading Web3 projects. See how industry leaders leverage our infrastructure.
how-we-deliver
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
We architect and deploy custom smart contracts for tokens (ERC-20, ERC-721, ERC-1155), DeFi protocols, DAOs, and NFT projects. Our code is built on Solidity 0.8+ with OpenZeppelin standards and undergoes rigorous internal audits before delivery.
- Faster Time-to-Market: Go from spec to testnet in 2-3 weeks.
- Security-First: Formal verification and gas optimization are standard.
- Full Ownership: You receive all source code, deployment scripts, and documentation.
We don't just write code; we deliver the secure, auditable foundation your Web3 product needs to scale with confidence.
Flow NFT Access Control
Frequently Asked Questions
Get clear answers on implementation, security, and support for our Flow-based NFT access control API.
Standard integration takes 2-3 weeks from kickoff to production deployment. This includes environment setup, smart contract deployment on Flow Testnet and Mainnet, API key provisioning, and a security review. Complex custom logic or multi-chain integrations may extend this timeline, which we scope and quote upfront.
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