Wallet of Satoshi is now live on Spark, bringing a self-custodial Lightning experience to their users for the first time. This marks a major step forward in making Lightning more scalable, seamless, and accessible—especially in the U.S. market.
When we first introduced Spark, we quietly rolled out an early beta to a small group of partners. Wallet of Satoshi was one of those teams we were especially excited about, given their deep expertise and impressive track record in Bitcoin.

At the time, Spark was still super early, but the Wallet of Satoshi team didn't seem to mind. They immediately saw the potential and pushed us to build something real. We can confidently say they've been a key driver in taking Spark from zero to one. They shaped a big part of our wallet SDK, constantly gave us thoughtful feedback, and kept us honest every step of the way.

...read more at lightspark.com