A two-day blockchain hackathon, 'Building Future Cities' is being organised by crypto investing platform CoinSwitch, in association with 'Startup Karnataka'. Around 8,000 crypto wallets on the Solana network have been drained out of around $8 million (roughly Rs. 63 crores) so far. The hack has only impacted 'hot wallets', that are always connected to the Internet. NDTV's Coffee and Crypto this week covers the hackathon live from Bengaluru and gets answers from Crypto gurus there on the Solana Hack.