Once live, Cash App users will be able to send bitcoin internationally to any external compatible wallet, including those for family or friends or a self-managed wallet. Users will also be able to send bitcoin to any merchant that accepts Lightning Network payments, with zero fees.
Dorsey himself had demonstrated interest in the Lightning Network, tweeting back in 2019 that it was a “cool example” of the experimentation taking place among #BitcoinTwitter users. More recently, Block’s bitcoin-focused company, Spiral, presented its Lightning Development Kit (LDK) which offers a way to easily integrate bitcoin payments into any application. The new Lightning integration on Cash App is also powered by Spiral’s LDK — and Cash App is also the first and largest payments app to integrate with LDK at this time, the company notes.