Usernames for which the authority that granted them has started the removal process by
unbinding them. Each unbinding username maps to its grace period expiry, which is the first
block in which the username could be deleted through a
remove_username call.
Usernames for which the authority that granted them has started the removal process by unbinding them. Each unbinding username maps to its grace period expiry, which is the first block in which the username could be deleted through a remove_username call.