A group of developers claim to have performed a solar-powered cryptocurrency transaction, using shortwave radios and blockchain tech. While it ...
source https://www.google.com/url?rct=j&sa=t&url=https://thenextweb.com/hardfork/2018/09/18/off-grid-solar-powered-cryptocurrency/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNGXztyLOkMDoCDH8sZPSOyN0fj5HA
