Very early project with your smarphone : ->"Measure to earn" : Silencio (iOS or Android) ask you some sound measurments to help the world's biggest noise mapping network and earn Noise Coins Use my username "pasucaru" as your invitation code when signing up - >"Detect to earn" : Earn Nodle connecting devices around you on Polkadot network https://nodle.go.link/?adj_t=6kvgwhg -> "Listen to earn" : Ta-da.io to train an AI and earn token before Launchpad on MultiversX . Code ( only 5) : 9845b4cf8d -> "Walk to earn" : SweatCoin just earn token walking, already on the NEAR network: https://sweatco.in/i/pasucaru