1. https://www.coindesk.com/trueusd-stablecoin-soon-to-have-real-time-monitoring-of-dollar-backing
2. https://www.six-group.com/exchanges/exchange_traded_products/trading/newlistings/2019_en.html
3. https://cointelegraph.com/news/california-bill-would-legalize-crypto-for-tax-payments-from-cannabis-related-businesses
4. https://cointelegraph.com/news/us-startup-introduces-crypto-hardware-wallet-chip-for-cell-phones
5. https://www.opera.com/ru/ioscrypto