nostr:npub1sg6plzptd64u62a878hep2kev88swjh3tw00gjsfl8f237lmu63q0uf63m and  nostr:npub1sn0wdenkukak0d9dfczzeacvhkrgz92ak56egt7vdgzn8pv2wfqqhrjdv9 and  the explanatory videos by  nostr:npub1lelkh3hhxw9hdwlcpk6q9t0xt9f7yze0y0nxazvzqjmre3p98x3sthkvyz and the Alby browser extension.