Over 12 years since Bitcoin emerged as the world's first virtual currency, designed by an enigmatic, freedom-loving hacker and currently used by underground geeks to buy and sell everything from servers to cell phone jammers.

A decade later, Bitcoin and other cryptocurrencies are pretty much mainstream investment,s and even most non-techies know the basics of blockchain driving a decentralized finance revolution.

What Bitcoin was for those years, the development of NFTs seems to be in 2021.

So-called “non-fungible tokens” are having a huge boom in recent weeks, attracting increased venture capital cash and incredible speculative values ​​for digital collectibles.

Despite the fact that most of the general public barely understands how this blockchain-based digital authentication system works.

What is this about Non-Fungible Tokens?

Perhaps the easiest way to understand it is to think of NFTs as a digital version of the certificates of authenticity that are prevalent in the real-world art and collectibles market.

Instead of a piece of paper, however, NFTs use cryptographic smart contracts and a distributed blockchain (which, in most cases, is built on top of Ethereum technology) to authenticate who owns each particular token.

As with cryptocurrencies, those contracts are verified by the distributed collective work of the miners who maintain the entire system.

Through its computational work (whose electricity generates a lot of carbon emissions) just like it happens with cryptocurrencies.

NFTs can be sold and traded directly on any online marketplace, without any centralized control structure dictating the rules of those transfers.

What makes NFTs different from a cryptocurrency is the distinctiveness of each token .

With a cryptocurrency like Bitcoin, each individual unit is indistinguishable from another and has identical value. Each individual Bitcoin can be traded or split like any other Bitcoin (ie Bitcoins are tradable).

What makes NFTs non-fungible is that each one represents an entity with a different value and cannot be broken down into smaller units.

Just as anyone can start printing their own online Certificates of Authenticity (or anyone can start their own cryptocurrency to try to be the next Bitcoin) anyone with little technical knowledge can start minting their own NFTs.

Etherscan currently lists more than 9,600 different NFT contracts, each with its own network of trust that represents and tracks its own set of digital assets.

In the following video, they explain to you about 4 of the most important markets, such as: Rarible, Superrare, Nifty Gateway and AtomicHub.

1.Open Sea

OpenSea is the first and largest marketplace for user-owned digital goods, including collectibles, gaming items, domain names, digital art, and other blockchain-backed assets.

2. Rare

Rarible is an NFT (non-fungible token) platform for protecting digital collectibles secured with blockchain technology.

3. Nifty Gateway

Nifty Gateway allows you to buy, sell, trade and display your Nifties or digital NFT products. Great artists have chosen this NFT market, for example Calvin Harris.

4.Super Rare

SuperRare is a blockchain-backed social network for art creators and collectors. Creators can create digital works of art and tokenize them on the Ethereum blockchain.

Collectors can buy and trade works of art with royalties going back to the creator thanks to smart contracts. Limited access.

5. mintable

Creating and selling digital items on Mintable to earn cryptocurrency is one of the best alternatives for beginner users.

6.Atomic HUB

Atomic Assets is a standard for non-fungible tokens (NFTs) on the EOS cryptocurrency blockchain technology.

Anyone can use the Atomic Asset standard to tokenize and create digital assets and buy, sell and auction assets using the Atomic Assets marketplace.

Within this market, you will be able to special cards for some games, such as: SplinterLands. In addition, some collectible cards / cards.

7. Know Origin

Known Origin allows artists and designers to create, discover and own rare digital works of art, all protected by the Ethereum blockchain.

Artists can submit digital artwork as a jpg or GIF to the KnownOrigin gallery. All files are stored decentrally in IPFS. All assets are given unique identifiers that can be traced.

Known Origin focuses on digital art, so there is no point in going here for Cryptopunks or Avastars, for example. Think of the items for sale here like you would an art gallery.

8. Marble Card

MarbleCard is a way to create and exchange unique URL-based digital cards, each web page can only be viewed once and by a single person.

Once a card is created, that URL is claimed forever, all cards are non-fungible tokens created on Ethereum.

9. Valuable

The site, Valuables, allows anyone to auction off their tweet for payment in the form of ether.

The platform is solely focused on selling tweets as NFTs and obviously don't expect to sell your TWEETS, unless you are a major influencer in the world.

10. VIV3

VIV3 is the first general nft marketplace development for the Flow blockchain based on the belief that the world is at the beginning of a shift from physical to digital ownership.

Viv3 has a vision to empower one billion people to create, trade and own the world's most valuable creations based on Flow.

A highly scalable and composable smart contract platform that delivers the performance required for mainstream applications.

Artists, game studios, and brands use VIV3 to create unique tokens, each representing their digital creations on the Flow blockchain as NFTs (Non Fungible Tokens).

These NFTs are purchased by fans, collectors, gamers, and digital asset dealers.

11.Treasureland

TreasureLand is the first and largest NFT marketplace development on Binance Smart Chain that enables the buying and selling of BSC NFT tokens.

It is a spin-off from the developers behind DEGO, a hybrid platform that blends the worlds of DeFi and NFT.

It has a complete NFT ecosystem including NFT Casting, Mining, Crafting, Auction, Trading, Trading and more.

Getting your hands on some NFTs is pretty simple on the Treasureland platform. It allows listings and auctions payable in a few different cryptos.

You can also switch to DEGO to participate in NFT mining as well, which is pretty uncommon in the world of collectibles.

12. Venly

Venly is a digital collectibles marketplace designed for gamers and collectors in general where users do not need to pay with cryptocurrencies.

Venly is also the first NFT marketplace to operate on Polygon (formally Matic). Still in its infancy, the platform recently launched with a Battle Racers campaign to generate immediate interest.

Battle Racers is an action-packed blockchain racing game where you design, build and race NFT cars on arcade-sized tracks, as part of the launch a new special car called Venly was created.

13.Ghost Market

Ghost Market is the first blockchain NFT market. Ghost Market allows you to discover, buy and sell NFTs from both the NEO and Phantasma Blockchains.

Phantom is a fast, secure, and scalable blockchain built with NFT in mind, so it has many NFT features (minting, batch minting, shipping, etc.) built in by default.

14. Zora

Zora is a marketplace to buy, sell and trade limited edition products.

15. Foundation

Foundation is a platform for artists (creators) and collectors to sell, buy, list for auction, bid and bid their digital works of art represented by the Ethereum blockchain as NFTs.

16.Decentraland

Decentraland is a virtual game, in the style of what was formerly Second Life, with the novelty that it allows you to buy game objects as NFT digital assets.

To develop NFT marketplace like opensea, rare etc click the link below

https://www.blockchainx.tech/nft-marketplace-development