b'In the Harry Potter universe, there\\u2019s a handy spell for when you need to stop someone from spilling your secret plans or shit-talking during a duel. It\\u2019s called Mimblewimble, otherwise known as the tongue-tying curse. It\\u2019s also the name of a privacy technology designed for cryptocurrencies\\u2014because, well, somebody\\u2019s gotta keep crypto weird. The first coins to use Mimblewimble\\u2014distinct efforts called Grin and Beam\\u2014both launched in January.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'