ABSTRACTS OF ARTICLES OF THE JOURNAL "INFORMATION TECHNOLOGIES".
No. 6. Vol. 26. 2020

DOI: 10.17587/it.26.360-367

I. M. Shilov, e-mail: ilia.shilov@yandex.ru, D. A. Zakoldaev, PhD, e-mail: d.zakoldaev@mail.ru, ITMO University, Saint Petersburg, Russian Federation

Multidimensional Blockchain and its Advantages

The paper observes key disadvantages of robust ledgers based on blockchain technology. Most severe problems of such technologies include rapid increase of data for storage and the necessity to use mediators during information exchange between different systems. The purpose of this paper is solution of these problems which can be compatible with existing solutions. A new approach to building robust distributed ledgers based on existing solutions — multidimensional blockchain — is presented as one of potential mitigations. The paper contains description of possible modes of multidimensional blockchain functioning and its key peculiarities. The main advantages of multidimensional blockchain are excessive use of external transactions and system-wide addressing of transactions, blocks and accounts. External transactions are held in stages which mitigates double-spending attacks and preserves system independence. Initiating step is similar to sending usual transaction while accepting step implies usage of search and validation protocol. Numeric assessment of key features of multidimensional blockchain is presented. These include transactions per second, block generation period, amount of data stored by network nodes. Transactions per second are assessed under various circumstances: when amount of transactions generated in one time slot is static and when it is not. Those features are compared to analogs (currently — cryptocurrencies). The results can be used in building systems based on robust distributed ledgers and are a basis for formal security proof of the proposed solution.
Keywords: blockchain, robust distributed ledger, multidimensional blockchain, scaling, addressing, transactions, transactions per second, availability, integrity, liveness, persistence

P. 360–367

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