rich1.0unknown wroteunknown (npub1yh…6l33l)https://yabu.me/npub1yh2aytq422srfl54ul3qs7q2n0atx4fdfw95zdzfvznyz2njhckqg6l33lnjumphttps://yabu.mehttps://bitcoinmagazine.com/technical/spark-explained-like-youre-five