1. Okupski, K. (2016). Bitcoin Developer Reference.
2. Anderson, R., Bergadano, F., Crispo, B., Lee, J.-H., Manifavas, C., & Needam, R. (1998). A New Family of Authentication Protocols.
3. Bonneau, J., & Miller, A. (2014). Fawkescoin: A cryptocurrency without public-key cryptography.Security Protocols XXII.
4. Castor, A. (2017, May 16).A Short Guide to Bitcoin Forks.Retrieved from Coindesk: https://www.coindesk.com/short-guide-bitcoin-forks-explained/
5. Pérez-Solá, C., Delgado-Segura, S., Navarro-Arribas, G., & Herrera-Joancomartí, J. (2017). Double-spending Prevention for Bitcoin Zero-confirmation Transaction.IACR Cryptology ePrint Archive.