El Salvador is moving $400 million worth of bitcoin around its crypto piggy bank

El Salvador, where bitcoin is (controversially) accepted as legal tender, is moving some of its digital coins around. The nation has shifted $400 million worth of bitcoin to a cold wallet stored in a physical vault. In crypto, a cold wallet refers to devices that store cryptocurrency private keys offline. source: https://qz.com/el-salvador-moves-bitcoin-cold-wallet-1851339334