The Ethereum blockchain has given rise to multiple token standards, each with its unique characteristics and uses. Among the many Ethereum Improvement Proposals (EIPs) that have emerged are ERC-721 and ERC-6551. Each of these has its unique role and potential, offering intriguing possibilities for the growth and development of the NFT space.

The Original Non-Fungible Token Standard

ERC-721 is the original standard for NFTs on the Ethereum blockchain, and its importance cannot be overstated. Before ERC-721, tokens on Ethereum were largely fungible, like the ERC-20 standard used for most cryptocurrencies. Fungible tokens are identical to each other and can be swapped on a one-for-one basis, much like traditional currency.

But ERC-721 introduced something new to the table – uniqueness. Each ERC-721 token is distinct, possessing individual characteristics that set it apart from all others. 

This opened up a world of possibilities for representing ownership of unique digital items, such as digital art, virtual real estate, or gaming items. ERC-721 formed the foundation of the current NFT market, enabling the tokenization and ownership of unique digital assets on the blockchain.

A New Standard for NFTs

While ERC-721 laid the groundwork, ERC-6551 is an Ethereum Improvement Proposal (EIP) that takes the concept of NFTs to the next level. It creates a system in which each ERC-721 token is given its own smart contract account. 

These token-bound accounts allow NFTs to own assets and interact with other applications without changing existing ERC-721 contracts or infrastructure.

This is a game-changer in the NFT space. Previously, NFTs served mainly as pointers to data on the blockchain. But with ERC-6551, an NFT can actually own other assets and perform functions, much like a full-fledged user account on the blockchain.

How ERC-6551 Improves NFTs

With ERC-6551, NFTs gain a significant boost in functionality. They become more than just certificates of ownership for unique digital assets. Now they can actively participate in the blockchain ecosystem, interacting with smart contracts, owning other tokens, and even representing real-world entities.

Furthermore, ERC-6551 enhances the security of NFTs. The token-bound accounts are stored directly on the blockchain, making them less susceptible to hacking and theft. Plus, they offer increased interoperability, being compatible with other blockchains, thus making them accessible to a wider range of users.

In a world where digital ownership and interaction are becoming increasingly important, the potential applications of ERC-6551 are vast. From gaming to DeFi, identity verification, and the creation of DApps, token-bound accounts can add value in a multitude of ways, enriching the user experience and enabling new forms of digital interaction.

The Future of NFTs

While ERC-721 has served as a robust standard for NFTs and continues to play a significant role in the space, ERC-6551 appears to be a powerful extension to the capabilities of NFTs. By providing each token with its own smart contract account, it opens up a world of possibilities that could further enhance the utility, security, and interoperability of NFTs.

As the blockchain technology landscape continues to evolve, it’s important to understand these emerging standards and their potential impact. The rise of ERC-6551, with its enhanced capabilities, represents a promising development in the space, offering new ways for NFTs to interact within the blockchain ecosystem. As we move forward, it will be exciting to see how this standard is adopted and what new opportunities it will offer.

来源：nft news today