Could a hacker change the client software of Bitcoin Core to accept fraudulent updates to the consensus rules? Is there a manual update process? What are deterministic builds? Can fraudulent transactions be validated and propagated? Why are there progressive time-outs for nodes that propagate incorrect information? Would miners deliberately propagate invalid blocks? These questions are from the second and third sessions of MOOC 11, which took place on February 7th and February 14th 2019 respectively. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: What is a private key? - https://youtu.be/xxfUpIV9wRI Public keys vs. addresses - https://youtu.be/8es3qQWkEiU Re-using addresses - https://youtu.be/4A3urPFkx8g Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Derivation paths and watch-only wallets - https://youtu.be/tPCN3nDVzZI Key storage best practices - https://youtu.be/A5I55aOgX2o Key management and inheritance - https://youtu.be/W3XADagE6P8 Data integirty and validation of keys - https://youtu.be/LjbREINFrZk SIGHASH_NOINPUT and custodial wallets - https://youtu.be/lnb4CE3boKk Governance and social attack immunity - https://youtu.be/PjOHatoX6Fk Wallets, nodes, and monetary sovereignty - https://youtu.be/8Hb3tUn8s4E Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in Bitcoin. He is the author of “Mastering Bitcoin,” “The Internet of Money" series, and "Mastering Ethereum." Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ Subscribe to the channel to learn more about Bitcoin & open blockchains; click on the red bell to enable notifications about new videos! MASTERING BITCOIN, 2nd Edition: https://amzn.to/2xcdsY9 Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations-of-mastering-bitcoin/ THE INTERNET OF MONEY, v1: https://amzn.to/2ykmXFs THE INTERNET OF MONEY, v2: https://amzn.to/2IIG5BJ Translations of THE INTERNET OF MONEY: Spanish, 'Internet del Dinero' (v1) - https://amzn.to/2yoaTTq German, 'Das Internet des Geldes' (v1) - https://amzn.to/2LEiyqO German, 'Das Internet des Geldes' (v2) - https://amzn.to/2VCzse5 French, 'L'internet de l'argent' (v1) - https://www.amazon.fr/Linternet-largent-Andreas-M-Antonopoulos/dp/2856083390 Russian, 'Интернет денег' (v1) - https://www.olbuss.ru/catalog/ekonomika-i-biznes/korporativnye-finansy-bankovskoe-delo/internet-deneg Vietnamese, 'Internet Của Tiền Tệ' (v1) - https://alphabooks.vn/khi-tien-len-mang MASTERING ETHEREUM: https://amzn.to/2xdxmlK Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)