Never heard anything about these.

Please, a little bit advice for you. Never trust anything by “Volume” information from exchange, most of exchange have insider bot doing a wash trading to make a fake volume. So they have a good total volume trading to raise their exchange rank.

It’s really simple to see the trading history is fake or not, you just need to see from history trading. Most of wash trading from the exchange it self, have a same interval trading time, the amount really small, and most of the history always have a small different token.