SmartPlay is providing video to mobile/online platforms with IQIYI, Tencent Video in China, Star TV in India and multiple channels in the world. The SmartPlay believes that subtitles can play an important role to understand what they want to talk about in the culture that reflects the language of the country. Therefore, SmartPlay hopes to solve this problem by creating and sharing video subtitles based on blockchain technology to create an ecosystem for participants. Through this work, the SmartPlay aims to help many viewers understand the culture of other countries by accessing high quality content.