This week's WuBlockchain highlights include a potential Federal Reserve Chair candidate with ties to Coinbase, sparking interest in regulatory circles. Spain has proposed a significant 47% tax on cryptocurrency transactions, which could impact the country's crypto market dynamics. In South Africa, authorities have raised concerns about the risks associated with stablecoins, while China's cryptocurrency mining activities are reportedly resurging. Additionally, the South Korean exchange Upbit has suffered a security breach, raising alarms about exchange vulnerabilities. Other notable developments include S&P's downgrade of USDT, Vitalik Buterin's comments on privacy, increased crypto adoption in high-inflation countries, and significant industry donations in Hong Kong.