ERC-721 tokens have revolutionized digital ownership by enabling the tokenization of unique assets on the blockchain. They provide creators with verifiable proof of authenticity and ownership, reducing the risk of counterfeiting. The standard has driven the growth of NFT marketplaces such as OpenSea, Rarible, and Foundation, allowing artists and developers to monetize digital assets. Additionally, ERC-721 tokens support smart contracts, enabling programmable royalties and automated transfers. Verify the authenticity of ERC-721 tokens using blockchain explorers like Etherscan.