BTC is undoubtedly a great innovation, but it has many problems, one of which is inefficient transaction performance: the transaction speed of the entire network is about 7 transactions per second, which is much lower than the traditional financial transaction system; at the same time, waiting for the trusted confirmation of 6 blocks will result in a final confirmation time of about 1 hour. Thus, the Lightning Network appeared. Lightning Network mainly improves off-chain transaction channels ...