Coinbase Chief Executive Officer Brian Armstrong said the $300 billion stablecoin market could expand tenfold by 2030, with rising payment volumes potentially becoming an important revenue source and reducing the company’s reliance on cryptocurrency trading fees. Stablecoin-related revenue rose to 24% of Coinbase’s second-quarter revenue from 22% in the previous quarter. Coinbase shares more than half of the revenue generated from USDC with issuer Circle, while Armstrong said Coinbase receives more than half of USDC-related revenue. The company also launched Coinbase for Agents, infrastructure that allows compatible artificial-intelligence applications to trade cryptocurrencies, stocks and derivatives through Coinbase Advanced Trade. The platform supports spot trading across more than 900 cryptocurrency pairs, qualified U.S. futures contracts, S&P 500 component stocks and USDC conversions. Coinbase recommends separate restricted portfolios for agent activity, while native x402 payments remain under development after the infrastructure processed more than 100 million transactions on Base and Solana. Coinbase’s second-quarter revenue of $1.22 billion missed the $1.29 billion to $1.31 billion analyst forecast range. COIN was priced at $179 on Sept. 9, up 0.15%, after trading between $174 and $192 since Aug. 21. Analysts identified support near $173 to $177 and then $160, while a move above $180 could revive the uptrend that began Aug. 19. The Senate scheduled a Sept. 15 vote on the CLARITY Act, with 85% of market participants expecting it to fail. Armstrong said the Securities and Exchange Commission and Commodity Futures Trading Commission could still establish comprehensive crypto rules regardless of the legislative outcome.