nostr:nprofile1qyxhwumn8ghj7mn0wvhxcmmvqyf8wumn8ghj7mmxve3ksctfdch8qatzqqsrmhqm2qvscs4ea3w4s99q4hpja4mlvvpmw2dpke4hqnfr0myjp4qdrp6u0 will give a short explaination of Spark at ~20:30@Njoy Cafe. Spark is the Level2 solution on Bitcoin that has pros and cons to Lightning Network, the most used current Level2 solution.
