What is OpenSea NFT Marketplace?

Although NFTs like CryptoKitties and CryptoPunks were already popular among early Ethereum users, it wasn't until the 2021 crypto bull run that they gained widespread attention. 

What is OpenSea NFT Marketplace?

According to estimates, NFT trading volumes surged by an astonishing 21,000% between 2020 and 2021, and OpenSea emerged as one of the major beneficiaries of this NFT frenzy.

Presently, OpenSea continues to dominate a significant portion of the NFT trading volume in the ecosystem, with many of the NFT collections featured on social media likely to be found on this platform.

What is OpenSea NFT Marketplace?

OpenSea is a peer-to-peer marketplace that operates on the Ethereum blockchain and facilitates the buying and selling of non-fungible tokens (NFTs). Launched in December 2017 by Devin Finzer and Alex Atallah, OpenSea quickly established itself as one of the largest and most popular NFT marketplaces on the internet.

Unlike traditional marketplaces that focus on a specific category of goods, OpenSea allows users to trade a diverse range of NFTs, including art, music, collectibles, virtual real estate, and gaming items, among others. The platform operates as a decentralized exchange, meaning that buyers and sellers interact with each other directly without the involvement of intermediaries.

OpenSea's popularity stems from several factors, including its user-friendly interface, low fees, and broad selection of NFTs. The platform also enables creators to easily create and list their own NFTs, making it accessible to both established artists and up-and-coming creators.

One of the most notable features of OpenSea is its integration with multiple Ethereum-based marketplaces, including SuperRare, Rarible, and Foundation, among others. This integration allows users to seamlessly buy and sell NFTs from different marketplaces using a single account.

OpenSea has also introduced several innovative features, such as the ability to create bundles of NFTs, fractionalize NFT ownership, and even create custom NFT storefronts. These features have contributed to the platform's popularity and have helped it stay ahead of its competitors in the NFT marketplace space.

Despite its success, OpenSea has faced criticism from some quarters for its perceived lack of quality control, which has led to the proliferation of low-quality and spam NFTs on the platform. However, the company has taken steps to address this issue by implementing stricter guidelines for listing NFTs and introducing a verification system for creators.

A Look at the Strengths and Weaknesses of OpenSea NFT Marketplace


  • Free NFT minting using OpenSea's gas-free marketplace
  • Royalty payments for original creators
  • Easy browsing and purchasing experience for buyers
  • Support for multiple crypto wallets


  • High gas fees during peak network congestion
  • Performance issues with degraded website and API
  • Instances of improper use and theft resulting in loss for customers
  • Community unrest around fundraising plans

OpenSea NFT marketplace provides both creators and buyers with numerous benefits. One of the main advantages for creators is the ability to mint NFTs for free using OpenSea's gas-free marketplace, which means that creators won't have to pay transaction fees on the Ethereum network. Additionally, original creators can receive a royalty payment for every secondary-market sale of their tokens.

Buyers have an easy experience when browsing through NFT collections, with the ability to filter by price, status, native blockchain, and rarity of each token. They can place bids, make offers, or buy NFTs immediately by paying the asking price. Buyers can also see the purchasing history of each NFT, including how many times it was sold, who bought it, and its prices. OpenSea supports more than a dozen crypto wallets, making it accessible to a wide range of users.

However, there are some weaknesses associated with OpenSea. One concern is that because the platform uses the Ethereum blockchain, there may be high gas fees during peak network congestion. OpenSea is currently the top gas guzzler on the Ethereum network. To address this issue, OpenSea added cross-chain support for Polygon and created a gas-free marketplace. Another concern is related to the platform's performance, which often runs with degraded performance.

There have also been instances of improper use and theft resulting in loss for customers. OpenSea's head of product was accused of trading NFTs on insider information, using secret crypto wallets to buy NFT drops before they were listed on the platform's homepage. Additionally, in January 2022, OpenSea suffered a theft of 332 ETH, worth around US$800,000 at the time of the attack. OpenSea contacted affected customers directly and reimbursed them, but stated that the problem is fundamental to blockchain marketplaces.

Finally, OpenSea has experienced community unrest around its fundraising plans. In December 2021, the OpenSea NFT marketplace faced heavy criticism after its CFO (Chief Financial Officer) began plans to take the company public. Users felt that the company should keep its fundraising within the community, through an OpenSea token airdrop. The executive later clarified that the firm was not planning an IPO and that they would involve the community if they did.

A Guide to Creating NFTs on OpenSea

If you're an artist or a musician looking to monetize your digital work, creating NFTs on OpenSea can be a great option. The process of creating NFTs on OpenSea is straightforward and can be done in a few simple steps.

First, navigate to the "Create" tab on the OpenSea website. This will take you to the NFT item creation page. Here, you can add your NFT files, including their names and descriptions. You can also customize your NFT by adding properties, levels, stats, and other attributes to make it unique.

Once you've uploaded your files and customized your NFT, you can then set a price for it. You can choose to sell your NFT through an auction or set a fixed price. If you choose an auction, you can set a reserve price, which is the minimum price you're willing to accept for the NFT.

Once you've set the price, you can then publish your NFT to the OpenSea marketplace. It will then be available for anyone to purchase using cryptocurrency.

Overall, creating NFTs on OpenSea is a simple and accessible way for artists and musicians to monetize their digital work and take advantage of the growing interest in NFTs.

Selling NFTs on OpenSea: A Step-by-Step Guide

To sell your NFTs on OpenSea, you have the option to sell a single item or create a bundle of multiple NFTs to sell together. Here is a step-by-step guide to listing your NFTs for sale on OpenSea NFT Marketplace:

  1. Go to your profile icon on OpenSea and select the NFTs you want to list from your wallet.
  2. On the NFT item page, click on the "Sell" tab located at the top right corner of the page.
  3. The listing page will open, and you will be presented with different sale options to choose from, including fixed-price sales and timed-auction sales.
  4. Set the price for your NFT, select the currency you want to receive, and choose the type of sale.
  5. If you choose a timed-auction sale, set the duration of the auction and the minimum bid amount.
  6. Customize your listing by adding a description, images, and other details that will make your NFT more attractive to potential buyers.
  7. Review your listing and click the "List item" button to make it available for sale on OpenSea.

Once your NFT is listed for sale, interested buyers can place bids or buy it outright for the listed price. If someone buys your NFT, the sale proceeds will be deposited in your connected wallet.

7 Tips for Securely Storing Your NFTs on OpenSea

In the crypto market, scams are becoming increasingly prevalent. Scammers target crypto users, whether on a crypto exchange or an NFT marketplace. Here are seven tips to help you safeguard your NFTs on OpenSea.

  1. Do not share your secret recovery phrase with anyone, not even someone posing as an OpenSea support official.
  2. Ensure that you’re linking to the official website, not one with a similar name but a different domain. Sometimes the difference is easy to miss, so be careful to confirm the site before initiating a transaction.
  3. When your wallet is linked to a browser, avoid clicking on broken, unknown, and suspicious links to avoid getting hacked.
  4. Your passwords should be unique, different from the ones you use for other sites.
  5. Enable two-factor authentication (2FA) to shield yourself from potential attacks.
  6. Consider using a hardware wallet to store your NFT assets for improved security.
  7. Do not download attachments from an OpenSea email. OpenSea does not send files to its users, so be cautious of phishing emails.

The Bottom Line

OpenSea is a popular NFT marketplace that offers creators a platform to sell their digital assets and collectors a place to purchase unique and one-of-a-kind NFTs. Despite some concerns around network congestion, platform performance, and security, OpenSea remains a top choice for buying and selling NFTs, offering a user-friendly interface, a variety of payment options, and a wide range of collections to choose from.

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