Exploring NFT on macOS — ERC-721 with Hardhat (Local Chain Walkthrough)

Description

This video documents a practical exploration of NFT fundamentals through an ERC-721 test on macOS using a Hardhat local network. While initially attempting to work through Sepolia, several practical difficulties arose (faucet access, RPC variability, network configuration). To focus more clearly on core blockchain behavior, the workflow was simplified by moving to a controlled local Hardhat environment. This walkthrough demonstrates: - Smart contract deployment (ERC-721) - Minting and on-chain ownership verification (ownerOf) - Transfer execution and event logs (Transfer) - Permission enforcement and revert behavior - JSON-RPC interaction via Python Web3 The emphasis is on understanding foundational blockchain mechanics: EVM execution, state transitions, event emission, and verifiable on-chain ownership. Full written reference: https://ngene.org/sandbox.html#20260220_NFT This video shows how to run the example introduced in that page. Keywords #blockchain #NFT #ERC721 #Hardhat #Ethereum #EVM #SmartContract #Web3py #Solidity #OnChain #JSONRPC #macOS #LocalTestnet