The South African Reserve Bank (SARB) partnered with seven other banks to develop a blockchain-based interbank system that handles daily payments in less than two hours while ensuring secrecy and finality of data. Hacking and system breakdowns pose a threat to the banking industry. The reconciliation payments are ineffectual, despite the substantial cost of dealing with these difficulties. Ultimately, banks bear the whole cost of uncovering questionable transactions.

Challenge 1: If central bank server is down, the other banks would not be able to process the payments.
Solution 1: Increase the resiliency of interbank payment systems.

Challenge 2: Cost spent to deal with attacks and equipment failure is high.
Solution 2: Reducing or maintaining the overall cost of the system.

Challenge 3: It is hard on banks to find out suspicious transactions within short period of time.
Solution 3: Interbank system that processes daily payments to ensure confidentiality and finality in records in less than two hours.