Amazon-Flipkart's mystery sellers, Bluestone cuts IPO valuation and new UPI milestone clocked | MC Tech3

In today's Tech3 from Moneycontrol Amazon and Flipkart’s top sellers are clocking massive revenues, but with razor-thin profits and rising regulatory heat. Jewellery brand Bluestone tones down its IPO valuation but hopes to shine with its phygital strategy. Meanwhile, UPI hits a record 707 million daily transactions, but funding cuts raise questions on sustainability. And Indian audio firms scramble as China’s export curbs on rare earth metals disrupt production.