1. IOTA – https://iota.org/. Last visited 09.02.2020
2. Projekt uPort – https://www.uport.me/. Last visited 09.02.2020
3. Sovrin – https://sovrin.org/. W3C – Decentralized Identifiers (DIDs) v0.10 Last visited 09.02.2020
4. Turek, J., & Shasha, D. (1992). The many faces of consensus in distributed systems. Computer, 25(6), 8-17.
5. REGULATION (EU) No 910/2014 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 July 2014on electronic identification and trust services for electronic transactions in the internal market and repealing Directive 1999/93/EC[6] Mandate M460: “Standardisation Mandate to the European Standardisation Organisations CEN, CENELEC and ETSI in the Field of Information and Communication Technologies Applied to Electronic Signatures”.