Cryptocurrency Digest Aug 13, 2021: News, Analysis & Opinions

⚡️ The Poly Network hacker returned all funds and refused the reward.
📱 Honor released a smartphone with hardware wallet support for digital yuan.
📑 Kryptoin has applied to launch an ETF based on ETH.
❌ Binance restricted a number of services for South Korean citizens.
⛏ Bitcoin mining difficulty increased by 7% after another recalculation.
🤝 Polygon will merge with Hermez Network.
✨ The president of Argentina says he sees no reason not to accept bitcoin.
