Rarible is a decentralized, community-centric NFT marketplace that enables users to create, buy, and sell digital assets such as art, collectibles, and virtual goods. Supporting multiple blockchains—including Ethereum, Flow, Tezos, and Polygon—Rarible offers a versatile platform for diverse NFT transactions.
Athena is a decentralized insurance protocol that uses ERC-721 tokens (NFTs) to represent liquidity positions and insurance covers, enabling detailed customization and efficient user interaction. Liquidity providers deposit ERC-20 tokens, receiving Position NFTs representing their stake, while cover buyers deposit premiums to receive Cover NFTs representing their insurance coverage. These NFTs store individualized data, allowing for flexible coverage limits, liquidity strategies, and seamless claim or withdrawal processes. By combining DeFi strategies with tokenized contracts, Athena ensures transparency, security, and user-friendly access to decentralized insurance solutions
UTU Protocol is a decentralized trust infrastructure designed to enhance online interactions by providing personalized and contextually relevant trust signals. By leveraging artificial intelligence and blockchain technology, UTU aims to replace traditional anonymous ratings and reviews with more reliable trust mechanisms.
Open Source Observer provides free analytics to assess the impact of open source software contributions on ecosystem health, focusing on the Superchain. It aims to demonstrate the value of these contributions by offering visibility and verifiable proof. Operating without formal governance or a native token, the project has garnered support through grants, including a Builders Grant from Optimism and recognition at an Optimism hackathon. Following its spinout from Protocol Labs in 2023, the team established Kariba Labs to continue development independently.
