A Twitter discussion highlights several blockchain projects building on Robinhood Chain and Ink ecosystem. Projects include sleepagotchi (health platform), PlayOnMint (NFT identity system), vangrid_io (spatial data infrastructure), zerufinance (token distribution), agenticscredit (DeFi loans), and Americanfort_io (privacy tools). Discussion notes Robinhood Chain's 28M customers and Ink ecosystem growth with builder support.