Publisher's Synopsis
The digital currency may have other definition. However, I give the digital currency a new definition in this book. Based on the MathAccounting software, the digital currency is the electric extension of the traditional money. The most advantage of the MathAccounting software is that it can embed an identity ID into every dollar in the process of money circulation regardless of the cash receipts and the cash payments. Because all members of the society in the world will touch money, all identity IDs of society members can be embedded in the money. Embedding an identity ID into the money can be achieved by adding the three-level subaccount to existing multi-subaccount name of the parent account "Cash". Namely, the "MultiSubaccount Name" form of the "Cash" is the "Identity ID
