BlockBeats News, September 9th, according to official sources, Coinbase will add support for SPX6900 (SPX, an ERC-20 token) on the Ethereum network and Flock (FLOCK) on the Base network. Trading will begin in Pacific Time on September 9, 2025, at 9:00 AM or later if liquidity conditions are met. Once an ample supply of these assets is available, their SPX-USD and FLOCK-USD trading pairs will be launched in phases.