Need help with NFT royalty implementation
I’m working on an NFT collection and want to build royalty features directly into my smart contract code. I don’t want to rely on external marketplace solutions for this.
Basically, I need the contract itself to handle royalty payments when tokens get resold. This way the original creator can automatically receive a percentage of future sales.
I’m using a scaffold framework for Ethereum development, but I’m not sure how to properly implement the royalty logic in Solidity. What’s the best approach to add this functionality?
Has anyone successfully implemented contract-level royalties before? Would appreciate any guidance on the technical implementation.
EIP-2981 royalties are definitely the way to go for your NFT contract. You’ll need to create a royaltyInfo function that sets the recipient and royalty amount based on sale price. Just inherit from ERC2981 - it makes everything way easier. Set your royalty rate when you mint the token. OpenSea, Rarible, and most major marketplaces support this standard, so royalties get enforced automatically. Just remember - this only works on compliant platforms. Direct wallet-to-wallet transfers won’t trigger royalties. For implementation, use OpenZeppelin’s ERC2981. Call _setDefaultRoyalty with your creator address and basis points, then make sure you’ve got supportsInterface implemented so platforms can detect EIP-2981 support.
eip-2981 is solid. override _beforeTokenTransfer if u need more control - been there. the tricky bit is basis points calculation. use 10000 as your denominator for percentages. test everything tho - marketplaces handle royalty enforcement differently.