OKX launches Spark USDC on-chain earning rewards program, with annualized returns up to 9.68%

OKX will officially launch the Spark USDC bonus program at 16:00 (UTC+8) on August 4, 2025, with a total prize pool of 2,000,000 SPK. During the promotional period, users who subscribe to the Spark Protocol's on-chain coin-earning product USDC will receive corresponding SPK token rewards, with an annualized return of up to 9.68%.