NFTs were born on Ethereum blockchain. Non-fungible token (NFT) technology made its debut with the now-popular Cryptopunks and Cryptokitties back in 2017 and popularity of these NFT projects has led to Ethereum network congestion that has caused slower processing speeds and increased transaction fees, and threatening to slow mass adoption. Also, Ethereum uses the proof-of-work (PoW) mechanism, which means transactions on the platform consume huge amounts of electricity, and, many developers and investors are getting concerned about Ethereum’s environment impact, and Ethereum has a plan to switch to proof-of-stake (PoS) mechanism, which is more energy efficient
To make Ethereum addresses more memorable, there is Ethereum Name Service to provide Ethereum address with an easier-to-remember name like myethwallet.eth, which means that you could ask someone to send you ETH via myethwallet.eth rather than 0x123456...... address.
ENS names have value, usually based on length and relevance, and with ENS you don't need a domain registry to facilitate the transfer of ownership, instead, you can trade your ENS names on an NFT marketplace, like OpenSea.
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