RabbitHole is building a two-sided marketplace, connecting users and contributors with projects and protocols, fostering learning, contribution, and on-chain achievement recognition. Users engage in learning by doing, earning cryptocurrency, and building on-chain credentials through completing Quests and projects, and acquiring Skills. Initial partners like Polygon, Aave, ENS Domains, and more, incentivize learning and contribution via a "learn-to-earn" model. RabbitHole raised $3.6M in seed funding in June 2021 and completed an $18M Series A funding in February 2022, led by Electric Capital, Greylock, and TCG Crypto, respectively. Earn tokens by completing on-chain actions in your favourite web3 apps.