Ex-Facebook crypto chief David Marcus launches Lightspark, a payments startup building on Bitcoin’s Lightning network, backed by a16z, Paradigm, and others

Ex-Facebook crypto chief David Marcus launches Lightspark, a payments startup building on Bitcoin’s Lightning network, backed by a16z, Paradigm, and others  —  After his departure from Facebook in November, many crypto industry insiders speculated where long-time executive David Marcus would land.