According to an official announcement, OKX's on-chain earning program will extend its Spark USDC bonus SPK reward program from 4:00 PM on October 10, 2025, to 4:00 PM on November 10, 2025 (UTC+8). During this extended period, an additional 8,000,000 SPK will be awarded, allowing participants to earn up to 10% annualized returns (including Spark Protocol's base yield and real-time activity income). During the promotional period, users who subscribe to Spark Protocol's on-chain earning program will automatically receive SPK tokens. Users who have already subscribed to Spark's USDC product are also eligible. Users can participate conveniently through the OKX app or website: In the app, go to "Explore" - "On-chain Earning" - select USDC, set Spark as the income source, and complete the subscription. On the website, go to "Finance" - "On-chain Earning" - select USDC, set Spark as the income source, and enter the subscription amount. There is no subscription limit during the promotional period, so participate now and earn more income.