Hacker group BlackCat threatens to release stolen Reddit data, demanding a ransom and reversal of changes. Sydney emerges as a global hub for crypto and blockchain, hosting innovative projects and fostering a vibrant crypto culture. Bitcoin reaches one-year high after BlackRock's Bitcoin ETF plans and increased institutional interest. JPMorgan expands its blockchain-based token, JPM Coin, to include euro payments. US Supreme Court ruling favors Coinbase, reinforcing companies' rights to arbitrate disputes.