OpenSea's Seaport protocol allows NFT bartering

The nonfungible token market Web3 marketplace protocol for "safely and efficiently purchasing and selling NFTs" has been announced by OpenSea.

NFTs will be available for purchase using assets other than payment tokens like Ether under Seaport's new marketplace protocol, OpenSea said on Friday (ETH). 

NFTs may be exchanged for ETH, ERC721 or ERC1155 tokens, according to the site, which implies trading a mix of tokens as a form of payment.

“OpenSea does not control or operate the Seaport protocol — we will be just one, among many, building on top of this shared protocol,” 

In addition, Seaport users may indicate while making offers whatever criteria they desire, such as certain qualities on NFT artwork or items that are a part of a collection. As long as the initial offer is not exceeded, the platform will allow for tipping.

According to NFT marketplace OpenSea, 

“OpenSea does not control or operate the Seaport protocol — we will be just one, among many, building on top of this shared protocol,” 
“As adoption grows and developers create new evolving use-cases, we are all responsible for keeping each other safe.”

The launch marketplace protocol was implemented following OpenSea's acquisition of NFT marketplace aggregator Gem in April. 

As of this writing, OpenSea is still working to include Gem features like a price sweeping tool and rarity-based rankings.