Currency Bitcoin 'halving' to shake crypto markets in 2020 Updated : December 26, 2019 09:42 AM IST The event, expected in May 2020, slashes by half the number of new coins awarded to bitcoin miners who provide global supply of the cryptocurrency by solving complex maths puzzles. No one's in control of this process. It's a rule written into bitcoin's underlying code by its pseudonymous creator Satoshi Nakamoto more than a decade ago. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.