TY JOUR TI Legal protection of digital art by NFT technologies KW non-fungible tokens KW crypto-art KW blockchain system KW creative industry KW exclusive rights KW copyright JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Kraus, A.S. AU Ochhikidze, A.Z. AU Dan'shina, N.A. PY 2025 IS 0 PB ITBO University