IntroductionIn 2010, Gavin Andresen, the main developer of the Bitcoin network, created the Bitcoin Faucet, the very first cryptocurrency faucet. Each user can get 5 BTC for free after completing the simple verification code. The bitcoin faucet distributed a total of 19,715 BTC, helping to broadly distribute early bitcoin ownership. It played an important role in educating the initial network of Bitcoin users, leading to the healthy development of the cryptocurrency later. Of course, no crypt...