【Ethena and Securitize plan to launch stablecoin USDtb to participate in Spark's $1 billion tokenization competition】According to Jinse Finance, Ethena and Securitize are preparing to participate in Spark's $1 billion tokenization competition with the upcoming stablecoin USDtb. The initial reserves of USDtb will be supported by over 90% from BlackRock's BUIDL fund, which is tokenized by Securitize. Spark is a platform under the Sky ecosystem (formerly MakerDAO), and the outcome of the competition will be determined by votes from Sky token holders. Ethena claims that it contributes approximately $120 million in annual revenue to the Sky ecosystem, accounting for nearly 30% of total revenue.