It's non-custodial and uses hot storage for safeguarding Bitcoins. Today, Electrum has more than 300 people contributing to its development.Įlectrum is a lightweight Bitcoin wallet that allows users to interact with the Bitcoin blockchain directly without running a full node. Thomas Voegtlin built it in 2011 exclusively for Bitcoin and even kept the decentralization roots of Bitcoin by releasing the wallet's software code as open-source software. Based in Berlin, Germany, Electrum is one of the founding fathers of crypto software wallets.