The world's largest asset manager, BlackRock's announcement to create a Bitcoin ETF had pushed the Bitcoin to rally for a third straight day, reaching $30,755, the highest level since mid-April. EDX Markets, back by Citadel Securities, Fidelity, and Schwab, had just started a crypto exchange operation, as the global cryptocurrency sector faces the U.S Securities And Exchange Commission scrutiny over securities law violations. Senior market analysts warned that cryptocurrencies need good news from the SEC to maintain long-term sustainability. Ether, the coin linked to the Ethereum blockchain network, also rose 4.8% to $1,877.70.