Abstract
Blockchain Technology (BT) involves maintaining a special log (or register of records), the amount of information in which increases with each new record. Maintaining such a registry in high-load systems, in which several thousand (or more) records can be added per second, creates a serious problem of storing such a volume of information. There are also cases, in which the blockchain security features, and in particular its immutable data storage, are a drawback. For instance, once stored in the blockchain, erroneous data cannot be removed. To solve this problem, it is possible to use the redactable BT (RBT). In this case, one can clear the registry of outdated (or unnecessary) information that is no longer suitable for solving the tasks assigned to the system. However, this issue has its own subtleties, features and rules for working with this technology. Therefore, the purpose of the paper is to identify the actual problems of the RBT usage.
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