MUMBAI: India’s cryptocurrency tax regime could hamper blockchain innovation and undermine the country’s potential to become a hub for building core blockchain infrastructure, Ethereum co-founder Vitalik Buterin said.Speaking on the sidelines of Devcon, Ethereum’s annual global developer conference, in Mumbai, the 32-year-old Russian-Canadian programmer said the 30% tax on crypto gains and 1% tax deducted at source (TDS) on transfers could disproportionately burden smaller developers and discourage innovation. Buterin pointed to proposals in the US for a de minimis exemption on small-value transactions and tax exemptions in some countries for assets held for over a year. India needed a regulatory framework that allowed developers to…