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ERC721A Contract: The Ultimate Guide to Non-Fungible Token Standards

ERC721A is an improved implementation of the IERC721 standard that offers batch minting, making it easier and more cost-effective to create non-fungible tokens (NFTs). It was launched in January 2022 and was the first mainstream contract to offer a real alternative approach

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ERC721A Contract - Is Crypto Over

What is an ERC721A Contract?

One of the main differences between ERC721A and OpenZeppelin's ERC721 is that ERC721A supports minting multiple tokens for close to the cost of one, while ERC721 only allows for minting one particular type of NFT. ERC721A is also an extension and optimization of the ERC721 standard.

ERC721A has several benefits compared to other NFT standards. The gas fees while using ERC721A were found to be significantly lower in comparison to AC721 Enumerable. This is due to the fact that it offers a more efficient way of minting NFTs, allowing for bulk transfers and consecutive burns. Additionally, ERC721A offers greater flexibility and scalability, making it easier to use for a wider range of use cases

How Does an ERC721A Contract Work?

The ERC721A contract is a powerful way to save your community gas costs and save the Ethereum network from unnecessary congestion by batch minting NFTs.

ERC721A was created by Azuki and maintained by Cygaar_dev and Vectorized.eth. Several projects have implemented or plan to use ERC721A, and it is available on GitHub.

To deploy an ERC721A NFT smart contract, one can use a tool like third web Dashboard and hit "Deploy new contract".

Interacting with an ERC721A contract involves calling out to an already deployed contract or deploying a new one, depending on the situation.

In order to transfer ERC721A tokens to a contract as token owner, msg.sender must approve the contract to transfer tokens.

It is important to ensure that all non-reverting code paths have an explicit return with value or that the variable is named in ERC721A contracts.

Why is an ERC721A Contract Used?

The main benefit of using an ERC721A contract is that it saves a significant amount of gas during the minting process. This can help reduce the overall cost of creating an NFT project, as well as prevent unnecessary congestion on the Ethereum network. Additionally, the ERC721A contract is open source, which means that it can be copied and improved upon by the community.

If you are building an NFT project and are interested in using an ERC721A contract, there are various tools available to help you deploy, monitor, notify, and market your NFT collection. You can use the third web CLI to set up a smart contract, or head to the Contracts page in your third web Dashboard and hit "Deploy new contract" to browse smart contracts built by the top protocols in web3 and deploy them in just a few clicks


The ERC721A Contract provides developers and users with a uniform set of rules for creating and trading non-fungible tokens, or NFTs, on the Ethereum blockchain. By using a decentralized smart contract, users can trust that the token will always remain secure, be held by the rightful owner and provide them with a unique way of representing a variety of digital assets. The adoption of ERC721A is growing rapidly, as it provides an easy way for developers to create and deploy tokens that adhere to a certain set of criteria and for users to purchase and trade them.

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