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3 Tips on How to Upload NFTs to OpenSea More Efficiently

Non-fungible tokens are continuously improving in order to highlight the uniqueness of every individual. Because tokens of this type are unique and distinct from each other, they are an excellent choice for displaying uniqueness. We now have the ability to own digital assets using blockchain technology. It's up to us to figure out how to store and upload them in the best way. This post will provide you with pointers on how to upload NFTs to OpenSea in order to save time. HapPhi has a super upload that allows you to upload NFT collections to OpenSea in minutes.

Written by
June 15, 2022

As the world continues to become more digitized, new technology like blockchain and artificial intelligence is making it possible for us to own digital versions of real-world objects. This type of digital object, known as an NFT or Non-Fungible Token, can be stored on a blockchain and transferrable. It’s also unique because each one is different from the rest and cannot be broken down into smaller units like a standard token. We’re already seeing lots of companies launching and developing ways for users to upload their NFTs onto various platforms. However, this can often be a time-consuming process that involves numerous steps and constant copying and pasting. The good news is that there are many simple changes you can make to streamline the uploading process so that it takes you less time than it would otherwise take you if you don’t make those small changes beforehand. Here are 3 tips on how to upload NFTs to OpenSea more efficiently:

Always use the latest version of Solidity

This may sound like a no-brainer, but it’s actually crucial that you ensure you’re using the latest version of Solidity when uploading your smart contracts. Solidity is a programming language used to write smart contracts, and it comes with its own versioning system. This means that each new release of the language comes with its own set of new features and fixes. A lot of people often upload their contracts without updating to the latest version, which can lead to issues when the smart contract is being executed. For example, a lot of people used to upload contracts with the version 0.4.19, but that was before the fixed the “call” function, so uploading with that would make the contract not work. You can always check out the latest version of Solidity on the official website to make sure you’re always up to date.

Use HapPhi to check your smart contract

When you’re uploading your smart contract to OpenSea, you also need to make sure that your contract is valid. Now, a valid contract is different from a correct contract. A valid contract meets the requirements specified in the OpenSea smart contract validation standard. So, even if your contract is correct and follows your rules, it may not be valid on OpenSea because the validation standard may require something different. For example, you might have written your contract in a way that means it’s impossible for anyone to interact with it. But OpenSea’s validation standard requires that your contract be “callable” so that it can be interacted with. To check if your contract is valid, you can use the HapPhi website. This website contains a set of rules that OpenSea’s validation standard follows. So, if your contract is valid, it will trigger a result on the website. If it’s not valid, there will be no result.

Utilize OpenSea’s own Solidity library

When uploading your smart contract to OpenSea, you have the option of uploading it in either .VMT or .sol format. While .VMT is a format that many people have become accustomed to uploading their smart contracts in, .sol is a newer format that OpenSea recently started supporting. Now, don’t get us wrong: .VMT is a perfectly fine format to upload your smart contracts in. However, if you’re uploading in .sol, you’ll be able to gain access to OpenSea’s own Solidity library. This library allows you to easily add in common NFT features to your smart contracts, such as name, symbol, and decimals. This can make the process of uploading your smart contract much simpler. HapPhi uses .sol


The world of digital assets is ever-evolving, and the functionality of each token is constantly improving. Non-fungible tokens are uniquely different from each other, making them a good choice for showcasing the uniqueness of an individual. Now that blockchain technology has made it possible for us to own these digital assets, it’s up to us to figure out how best to upload and store them. The tips in this article can help you make the process of uploading NFTs to OpenSea more efficient so that you can spend more time enjoying them than worrying about how to upload them.

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