Nowadays, Decentralized finance(DeFi), Meme, and Non-fungible token (NFT) are the three most popular domains of blockchain-based markets. The popularity of Defi has exploded in recent years. DeFi market size has grown by over 300%; Commissioned research estimates the number of wallets actively interacting with DeFi protocols is over 1.2 million. With the complete launching of Ethereum 2.0, DeFi will further register exponential growth. Along with the popularity of Meme cryptocurrencies, that started as a joke, like DOGE and SHIBA, has become one of the leading tokens by market cap. Finally, we have Non-fungible token (NFT), which is used to represent ownership of unique items.