In essence, sending money is pyramid selling money, which is a fake blockchain. Under the slogan of "blockchain technology" and "digital currency", it began to illegally attract money to defraud investors. The so-called currency means that a number on someone's server can be changed at will, and you can be blocked if you want (for example, if you expose a scam in their discussion group, you will be blocked), and you can shut down the server and run away at any time.

Coin is a new type of cryptocurrency, which was created by the doctoral team of Stanford University. It is an opportunity for ordinary people to make money. Coin friends can get coins for free by downloading the coin delivery App on their mobile phones. According to media reports, many people in the currency circle believe that the mode of currency issuance expansion is very similar to pyramid schemes. However, whether coins are "air coins" is still inconclusive, but it is a fact that they have not been filed in official website, so investors must be vigilant.