Electrum is a lightweight, open-source Bitcoin wallet that has been in continuous operation since 2011, making it one of the oldest and most trusted Bitcoin wallets available. It connects to a decentralized network of Electrum servers rather than downloading the full blockchain, enabling fast startup and low resource usage. Electrum supports advanced features including multi-signature wallets, hardware wallet integration (Trezor, Ledger, Coldcard), Lightning Network payments, coin control, RBF (Replace-By-Fee), and custom transaction fee settings. Its focus on Bitcoin-only functionality and security has made it a standard among power users.
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