This chapter examines how cryptocurrencies and blockchain technology are transforming philanthropy by enabling new decentralized models of fundraising and donation. Cryptocurrency and blockchain have given rise to innovative forms of charity and social impact projects that provide more transparency, efficiency, and accessibility than traditional giving. This chapter first provides background on cryptocurrency philanthropy and its benefits, including lower fees, faster transfer of funds, and an immutable record of donations on the blockchain. It then reviews different models of crypto-based philanthropy: Direct crypto donations; NFT charity auctions; DAOs and crypto social impact funds; and “Giving” cryptocurrencies. Each model is explained through real-world examples and case studies. The benefits and limitations are critically analyzed. This chapter concludes by reflecting on how these experiments in Web 3.0 philanthropy are making giving more open, equitable, and impactful. They present new opportunities for social innovation and financial inclusion using cryptocurrency's distinctive properties.