Learn #Bitcoin nostr:nevent1qqsfv6zp6nd6g928nudmsdeg3g9wlv3yzwvqvgc5ljcakxrnmgam6acpzpmhxue69uhkummnw3ezuamfdejsygqm6v4rs6nmummg3v7u03yqalppek2xksl2c996fwncxjk80g37dypsgqqqqqqs2a0qd7