“ECASH IS AN OPEN, INTEROPERABLE PROTOCOL FOR BITCOIN BANKS” — nostr:npub1qny3tkh0acurzla8x3zy4nhrjz5zd8l9sy9jys09umwng00manysew95gx nostr:note1wrfl5qznjfy0cd52e48s8d6p0nkx0u2cmx9nkmwwfecf94qh6cwsmrs5th