A two-day blockchain hackathon, 'Building Future Cities', will be held here from August 5. The hackathon is organised by Crypto investing app CoinSwitch, in association with 'Startup Karnataka', a Karnataka Government initiative, and Tejasvi Surya, Member of Parliament. The hackathon will challenge participants to envision a blockchain-powered India, with a focus on smart mobility, energy credits and trading, decentralized waste …