The GDPR (General Data Protection Regulation) comes into effect on the 25th of May, 2018. For not complying, the fees are up to 20 million Euro. This is why Peter goes through the regulations that effect Blockchain and how you can become compliant (probably). No legal advice, but good old speculation will give you an overview of what GDPR is and what to look out for.
Peter talks through the current state of privacy on the Bitcoin blockchain and presents different methods of increasing said privacy. Topics include CoinJoin, Mixers, TumbleBit, Confidential Transactions and Schnorr Signatures.
Peter talks about different types of wallets and their security. The underlying technology of hierarchical deterministic (HD) wallets is discussed as well as Full Node and Simplified Payment Verification (SPV) wallets.