Transactions of crypto currency are gradually becoming commonplace and speed is in demand. If the system has a higher transaction speed, better customer satisfaction will be achieved.
Unfortunately, crypto transactions are common for us, which are closely related to crypto. Existing blockchains do not provide high speed with a large number of transactions and the average cost of the transaction. This is important for transactions with small amounts (for example, when paying 5$, the transaction cost can reach 1$).