On February 21, Yu Hu, founder of AI-based cryptographic search engine Kaito AI, wrote on social media, saying,"KAITO pledge rewards have been launched. Currently, about 10% of the tokens have been pledged, with an annualized rate of return of 70%. It is expected that this yield will gradually return to normal in the next few days. Locked-up tokens of investors/foundations/teams cannot be pledged. The current source of rewards is liquidity incentives, but starting next week, this will translate into net consumption as network fees increase. More uses of the pledge will be announced later."