OpenSea has launched Web3 marketplace protocol Seaport for the secure and efficient purchase and sale of NFTs. The team has now created the first iteration of Seaport, but the protocol is not just for OpenSea, but for all builders, creators, and collectors of NFTs. The core smart contract is open source and inherently decentralized, with no contract owners, scalability, or other special privileges. The protocol supports setting NFT as a means of payment of equal value, mixed with $ETH for the purchase of other NFT.