CloudCoins provide a theoretically “perfect” global currency that cannot be counterfeited, double-spent, mined, or lost. Your actions are 100% private, requiring no public ledgers, accounts, or even encryption. Like the Internet itself, it cannot be brought down by governments, hackers, or even nuclear weapons. CloudCoins consist of 3,200 bits of secret data that only the owner knows. These bits are written into jpg images or in text files that can be stored on your computer and sent to your partner by email, SMS, or even by regular old paper mail.
Visit the official CloudCoin website.