# Pastebin S5mwvg5K
interesting summary though:
• Confidentiality is difficult to achieve in blockchains.
• Sensitive data should not be stored or processed directly or without protection on a blockchain.
• Cryptographic mechanisms should be state-of-the-art, and a good key management is required.
• Mechanisms for anonymisation and pseudonymisation on blockchains are often not reliable in practice.
• Concrete (especially quantitative) assessments of the security level achieved cannot be made for most blockchain applications.