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Table 1. SHA 256 Hash values of information as a result of the hash function algorithm
In short, blockchain technology is a much simpler technology, so when using this technology, we 
should first focus on choosing a hash function algorithm. Of course, the higher the cryptographic 
strength of the hash function algorithm, the higher the reliability of the data we store in blocks. This, 
of course, violates the confidentiality of our financial information in the banking system of malicious 
subscribers and the reliability of our money in blockchain chains. Creating a remote lending system 
with a platform based on blockchain technology offers great opportunities. As we can see in the 
example, all the blocks are created by each subscriber in an interconnected way, which eliminates the 
problem of using the help of intermediaries in the conduct of banking operations in the network and 
the payment of existing interest. Most importantly, the network will find effective solutions to long-
standing unresolved issues such as data theft and fraud.
References
1. Равал С. Децентрализованные приложения. Технология Blockchain в действии, Питер, 
2017, 192с.
2. Blockchain Technology the Identity Management and Authentication Service Disruptor: A 
Survey , 2015, 25-29c. 
3. Ye Guo and Chen Liang Blockchain application and outlook in the banking industry Guo and 
Liang Financial Innovation (2016) 2:24.
4. Шнайер Б. Прикладная криптография. 2-издание Протоколы, алгоритмы, исходные 
тексты на языке Си Applied Cryptography. Protocols, Algorithms and Source Code in C.- М.: 
Триумф, 2002.-С. 19-22.-816 с.-3000 экз. 

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