In these years’, from 2015 until now, cryptocurrencies (cryptos) and all the financial instruments and events linked to it has become very popular following a hype wave of excitement. These cryptos, like Bitcoin or Ether, are traded thanks to the existence of the blockchain technology, which is the concept of a distributed ledger (DL) system where all new transactions are added to the chain thanks to the due diligence of people who are part of the network. They are called ‘miners’ and assure the correctness of the code of the transaction and deliver security to the system, which is not based on a trusted centralized authority.