O2 is an application-layer blockchain project, and our objective is to create a blockchain application that is truly meaningful to our daily life. By Fully leveraging the technology of distributed ledger (DLT), decentralization and the encrypted digital currency, O2will be able to overcome the innate weakness of the current banknote due to its physical properties, i.e. the risk of fraud, something we may encounter or even become accustomed to every day.

For example, if we are going to purchase 100 Dollar worth home appliance maintenance service, of course we prefer to get service first and pay later, but service provider definitely wants to get paid first. There is a perfect solution that nobody will actually adopt: we can fold and tear a 100 Dollar bill into two pieces, give one half of the banknote to the service provider, and then give the 2nd half when we are satisfied with the service. This approach guarantees that neither party during the services fraudulent because fraud will NOT bring any profit, as half of a banknote has no value.