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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

EVM NFT Upgradeable Smart Contract Development

Architect and deploy gas-optimized, secure upgradeable NFT contracts on Ethereum and EVM chains using proxies and modular libraries, enabling post-deployment logic evolution without data migration.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for scale and compliance.

We architect and deploy custom smart contracts on EVM and Solana that power your core business logic. Our development process is built for security and speed, delivering a production-ready MVP in 2-4 weeks.

We don't just write code; we engineer systems that are secure by design and ready for mainnet.

  • Security-First Development: Code is built with OpenZeppelin standards, undergoes multi-stage internal review, and is prepared for third-party audits from firms like CertiK or Quantstamp.
  • Full-Stack Integration: Contracts are delivered with comprehensive testing suites, deployment scripts, and integration guides for your front-end.
  • Protocol Expertise: From ERC-20/721/1155 tokens and custom AMM logic to complex DeFi primitives and ZK-circuit integration.
key-features-cards
PROVEN ARCHITECTURE

Our Upgradeable NFT Development Capabilities

We build future-proof NFT collections using battle-tested upgrade patterns. Our contracts are designed for long-term evolution, enabling new features, bug fixes, and governance changes without disrupting your community or requiring costly migrations.

01

Transparent Proxy Pattern

We implement the industry-standard Transparent Proxy Pattern (EIP-1967) for secure, non-breaking upgrades. This separates logic from storage, allowing you to deploy new contract versions while preserving all existing token data and ownership.

EIP-1967
Standard
0 Migrations
Data Preserved
02

UUPS Proxies for Gas Efficiency

For collections where gas costs are critical, we deploy UUPS (EIP-1822) upgradeable proxies. This pattern embeds upgrade logic in the implementation contract itself, reducing initial deployment and transaction gas fees for your users.

~40% Less
Deployment Gas
EIP-1822
Standard
03

Multi-Signature Upgrade Control

Security is paramount. We implement timelocks and multi-signature wallets (Gnosis Safe) for all upgrade authorization. This prevents unilateral changes, requires consensus from your team, and gives your community advance notice of all modifications.

M-of-N
Consensus
48-72h
Standard Timelock
04

Storage Layout Preservation

Our upgrade process strictly follows inheritance chain ordering and storage gap techniques to prevent catastrophic storage collisions. We guarantee that user balances, metadata, and permissions remain intact across all future versions.

0% Risk
Data Corruption
OpenZeppelin
Best Practices
05

Post-Upgrade Validation & Testing

Every upgrade undergoes a rigorous simulation and staging process before mainnet deployment. We test all state transitions, user flows, and edge cases in a forked environment to ensure zero downtime and full backward compatibility.

100%
Flow Coverage
Tenderly
Simulation Tools
06

Comprehensive Upgrade Documentation

We deliver detailed technical specifications and upgrade playbooks for your team. This includes step-by-step guides, rollback procedures, and communication templates to ensure smooth, transparent operations for every contract evolution.

SOPs
Standard Procedures
Full Audit Trail
Deliverable
benefits
STRATEGIC ADVANTAGES

Business Outcomes of an Upgradeable NFT Architecture

Deploying a future-proof NFT architecture is a strategic investment. Here are the measurable business outcomes our upgradeable smart contract development delivers for your project.

02

Mitigate Security & Compliance Risk

Our development process includes comprehensive testing and formal verification. An upgradeable architecture provides a critical safety net, enabling rapid response to newly discovered exploits or evolving regulatory requirements without a costly redeployment.

03

Accelerate Feature Deployment

Decouple your product roadmap from your contract's immutable core. Launch with an MVP and roll out advanced features like staking, rentals, or new metadata standards in subsequent versions, reducing initial time-to-market by up to 40%.

04

Preserve User Trust & Asset Value

A transparent, well-governed upgrade process prevents community fragmentation. We design clear governance mechanisms, ensuring upgrades are community-approved, which maintains collection integrity and protects the long-term value of your NFTs.

05

Optimize Long-Term Gas Costs

Our gas-efficient proxy patterns and storage layout management minimize the overhead of upgrades. This results in lower transaction fees for both your administrative functions and your users' interactions over the project's lifetime.

06

Enable Seamless Ecosystem Integration

Maintain backward compatibility with marketplaces, wallets, and indexers through each upgrade. We ensure your evolving contract remains a reliable, standardized component within the broader EVM ecosystem, preventing integration breakage.

Choosing the Right Architecture for Your Project

Static vs. Upgradeable NFT Contracts: A Strategic Comparison

Selecting the correct smart contract architecture is a foundational decision for any NFT project. This table compares the key technical, operational, and business implications of static (immutable) and upgradeable (proxied) contracts to help you make an informed choice.

ConsiderationStatic (Immutable) ContractUpgradeable (Proxy) ContractChainscore Recommendation

Core Architecture

Code deployed directly. No proxy layer.

Uses a proxy pattern (e.g., UUPS, Transparent). Logic is separate.

Depends on project roadmap and risk profile.

Code Immutability

Permanent after deployment. Cannot be changed.

Logic contract can be upgraded via authorized calls.

Essential for long-term projects requiring adaptability.

Security & Trust Model

Highest user trust. Code is fully transparent and fixed.

Requires trust in upgradeability governance. Potential for malicious upgrades.

We implement rigorous multi-sig governance and timelocks.

Gas Costs (Deployment)

Lower. Single deployment cost.

Higher. Requires proxy + initial logic deployment.

Upfront cost vs. long-term flexibility trade-off.

Gas Costs (Minting/Transfers)

Typically lower. No proxy overhead.

Slightly higher due to delegatecall via proxy.

Marginal difference for users; we optimize logic.

Time to Fix Critical Bugs

Impossible. Requires migration to a new contract.

Possible via upgrade, preserving state and token IDs.

Crucial for mitigating post-launch vulnerabilities.

Feature Evolution

None. New features require a new collection.

New features (e.g., new metadata standard) can be added.

Recommended for projects planning phased rollouts.

Developer Complexity

Lower. Standard Solidity development.

Higher. Must manage storage layout, initialization, and upgrade safety.

Our expertise handles all complexity for you.

Audit & Verification

Single audit for the immutable codebase.

Initial audit + re-audits for each significant upgrade.

We provide audit services for every version.

Ideal Use Case

Limited-edition art, fully realized projects, maximal trust scenarios.

PFP projects, gaming assets, evolving utilities, subscription models.

We analyze your roadmap to prescribe the optimal approach.

how-we-deliver
PROVEN PROCESS

Our Methodology for Secure, Iterative Development

We combine battle-tested security practices with agile development to deliver robust, upgradeable NFT contracts that scale with your roadmap.

01

Architecture & Specification

We begin with a comprehensive technical design, defining upgrade patterns (UUPS/Transparent Proxy), storage layouts, and governance models to ensure a future-proof foundation.

2-3 days
Design Sprint
100%
Spec Review
02

Secure Implementation

Development using Solidity 0.8+ with OpenZeppelin libraries. Every contract follows secure patterns for initialization, access control, and upgrade safety to prevent common vulnerabilities.

OpenZeppelin
Standards
0 Reentrancy
Guarantee
03

Rigorous Testing & Auditing

Multi-layered testing: unit tests (Foundry/Hardhat), integration tests, and fuzzing. Optional formal verification and third-party audit coordination (e.g., CertiK, ConsenSys Diligence).

>95%
Branch Coverage
Audit-Ready
Deliverable
04

Deployment & Verification

Gas-optimized deployment scripts for mainnet and testnets. Full contract verification on Etherscan/Snowtrace, with documented upgrade procedures and admin key management guidance.

Multi-Chain
Deployment
Publicly Verified
Source Code
05

Post-Launch Support & Upgrades

We provide monitoring dashboards and support for seamless, secure contract upgrades using the implemented proxy pattern, ensuring your NFT project evolves without downtime.

24/7
Monitoring
Zero-Downtime
Upgrades
06

Documentation & Knowledge Transfer

Complete technical documentation, admin manuals, and developer onboarding sessions to empower your team to manage and extend the smart contract system independently.

Full SDK
Included
Live Training
Session
security-approach
CORE SERVICE

Smart Contract Development

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

We architect and deploy custom smart contracts for DeFi, NFTs, and enterprise protocols. Our team specializes in Solidity 0.8+, Rust (Solana), and Vyper, implementing OpenZeppelin standards and gas-optimized patterns from day one.

  • Full Lifecycle Development: From specification and architecture to deployment and on-chain verification.
  • Security-First Approach: Rigorous internal audits, formal verification tools, and integration with platforms like CertiK and Hacken.
  • Measurable Outcomes: Deliver contracts with 99.9% uptime SLAs, gas costs reduced by 20-40%, and audit-ready code in 2-4 weeks.

We don't just write code; we deliver the secure, scalable foundation your protocol needs to launch and scale with confidence.

Technical & Commercial Clarity

Frequently Asked Questions on EVM Upgradeable NFT Contracts

Get clear answers on timelines, costs, security, and our development process for future-proof NFT collections.

Our standard delivery for a production-ready, audited upgradeable NFT contract is 3-4 weeks. This includes requirements analysis, architecture design, development, comprehensive testing, and a basic security audit. For complex projects with custom minting logic, staking, or multi-chain deployment, timelines extend to 6-8 weeks. We provide a detailed project plan with weekly milestones at kickoff.

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