Background
An emerging Web3 company collaborated with Coaldev to develop a decentralized NFT marketplace, enabling creators to mint, list, and sell digital assets. The client required OpenSea compatibility, allowing NFTs minted on the platform to be automatically synchronized and listed for sale externally.
Coaldev designed and developed a full-stack platform that supported NFT creation, presale management, wallet connectivity, and tokenized asset listings, all powered by the Ethereum blockchain.
Challenges
Building a decentralized NFT marketplace required balancing on-chain security, a smooth user experience, and strict compatibility with external ecosystems like OpenSea. The platform had to manage wallet interactions, metadata standards, and contract logic while keeping the creator workflow simple and reliable. Below are the main challenges Coaldev solved while developing this Web3-enabled marketplace.
Integrating Ethereum blockchain functionality through Web3.js.
Managing NFT metadata and secure wallet transactions.
Ensuring compatibility with OpenSea marketplace standards.
Implementing pre-sale and public sale logic in a user-friendly interface.
Solution
Coaldev implemented a Node.js backend to manage NFT generation and listing, while the React frontend handled wallet integration and real-time minting. Security measures were embedded to protect user assets and transaction data.
Coaldev engineered GatsbyNFT, a decentralized NFT marketplace with end-to-end asset lifecycle management.
Key solution components included:
1. Innovative Contract Development
Created Ethereum-based contracts for minting, presales, and on-chain revenue tracking.
2. OpenSea Integration
Implemented standardized ERC-721 and ERC-1155 token structures, ensuring NFTs minted on GatsbyNFT were instantly visible and tradable on OpenSea.
3. Secure Wallet Integration
Enabled MetaMask and Web3 wallet support for seamless user onboarding and transactions.
4. Creator Dashboard
Provided artists and sellers with tools to mint, preview, and manage NFTs directly through the platform interface.
5. Automated Metadata Management
Managed token metadata, ownership history, and royalty distribution within a secure backend.
The platform combined decentralized blockchain principles with a clean, user-friendly design, bridging accessibility and trust for the NFT creator community.
Results
The GatsbyNFT platform successfully launched with end-to-end NFT minting and listing capabilities.
Key outcomes
- Secure on-chain minting and wallet-based asset purchases.
- Seamless synchronization with the OpenSea marketplace.
- Simplified NFT creation via an intuitive creator dashboard.
- Fully automated backend for token metadata and listing management.
Tech Stack
- Node.js
- React.js
- Ethereum (Web3.js)
- Smart Contracts
- Blockchain APIs
Live Link: https://www.gatsbynft.io
