erc2981

Full-stack NFT marketplace on Polygon: escrow-free listings, escrowed offers, English auctions and ERC-2981 royalties. Upgradeable Solidity 0.8.37 contracts with 109 tests including fuzz and invariants, plus a Next.js 16 + wagmi v3 frontend.

Create 32 x 32 = 1024 pixels art as NFT on Polygon blockchain.

ERC1155 with ERC2981 Royalty Standard

Useful notes and source codes for "Blockchain Developers"

Mint expanded NFT (ERC721) drops

Decentralized NFT marketplace with EIP-712 signed listings, royalty support and platform fees

ERC-8004 agent identity with ERC-6551 Token Bound Accounts, on chain memory, and EIP-712/EIP-3009 dual-signature x402 payment settlement

Multi-collection NFT marketplace supporting fixed price listings, English auctions, offers, ERC-2981 royalties, and platform fees.

Complete ERC 721 testing and implementation with marketplace and royalty features.

Rentable NFT & Royal ERC4907 ERC2981

This is new Interactive NFT using ERC3664 and ERC2981 combined with DAO

ERC-6105 No Intermediary NFT Trading Protocol and its extensions' implementation in Cairo

TON bc NFT Loyalty Contract

Ethereum contracts for NOT FOR HUMANS: onchain agent portraits, signed agent decisions, ownership, and non-custodial markets.

A consignment marketplace for ERC-721 tokens: pull payments, capped royalties, and listings that admit when they have gone stale

Onchain avatar and wearables system on ERC-6551 token-bound accounts, with from-scratch soulbound ERC-721/1155 standards and onchain leveling. Solidity and Foundry, verified on Ethereum mainnet.

Production-ready Solidity templates for regulated tokenization: ERC-20 with vesting, ERC-721 with EIP-2981 royalties, multi-sig custodial vault. Hardhat + OpenZeppelin 5 + full TypeScript test suite.

ERC721 smart contract that creates unique NFTs integrating IERC2981 royalties

Official Cobox NFT contracts (Username CBXU + Environment CBXE) — ERC-721/ERC-2981, built with Hardhat & OpenZeppelin, deployed on BNB Smart Chain (BSC).

Mobile-first PWA marketplace for the ipê.city community. Pay with PIX or any crypto, pickup at the next event. Onchain receipts (ERC-1155 on Base) coming soon.