As captioned. If Paxos Standard is created by Paxos, and Binance USD is created by Paxos and Binance in partnership, then why are there two different coins instead of just one coin? What are the differences? Is Paxos Standard safer than Binance USD, and, if so, by how much? The follow-up question would be, would you consider Binance USD to be safer than Tether and Circle?