The prototype system divides the operation of CBDC (central bank digital currency) into three layers:
The first layer ‘s participants include central banks and commercial banks ,which involves in the CBDC’s issue and withdrawal and its transfering between the commercial bank, The first phase of the prototype system completes the closed loop from the central bank to the commercial bank, that is, through issuance and withdrawal, CBDC is transferred between the issuance library of central bank and the bank library of commercial bank, and the total currency issuance of central bank is guaranteed to remain unchanged in mechanism
The second layer is the CBDC deposit and withdrawal from commercial banks to individual or enterprise users.
The third layer is the CBDC circulation between individual or enterprise users, and the CBDC is transferred between the digital money wallets of individual or enterprise
Among them, the central bank mainly needs to set up the digital currency system, the commercial bank needs to set up the IT system of the bank, and the personal/enterprise device (POS/ATM/ digital wallet) involved in payment
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