https://www.reuters.com/article/tether-hindenburg/short-seller-hindenburg-offers-1-million-for-info-related-to-cryptocurrency-tether-idUSKBN2HA1PY >Short-seller Hindenburg Research, which in recent months has taken aim at firms including Nikola Corp and DraftKings Inc, announced a reward of up to $1 million for information on the reserves that back cryptocurrency Tether.