Blockchain News OpenAI hits $500B valuation, surpassing SpaceX as world’s largest startup Oktober 2, 2025 Tether is estimated to be the closest crypto company to rival OpenAI’s $500 billion valuation, far ahead of Coinbase, Ripple and Circle. Post Navigation Previous UK weighs if victims of China fraud scheme get today’s value of seized 61K BitcoinNext Melania Trump plugs memecoin amid $10M team selling allegations More Stories Blockchain News G7 calls for joint action on North Korean crypto theft, cybercrime Juni 18, 2026 Blockchain News Why banks are fighting stablecoins after shaping the rules Juni 16, 2026 Blockchain News LG, Arbitrum launch blockchain-based bid in $679B ad market Juni 12, 2026