Bitcoin Q&A: 2FA and secure hardware

published on Dec 05, 2018 by aantonop Favorite
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How secure is Google Authenticator? What are some hardware two-factor authentication options? When will these hardware security options become cheap enough for frontier markets?

These questions are from the HoshoCon event and the Seattle 'Internet of Money' tour event, which took place on October 11th and November 10th 2018 respectively. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron:

Advanced Bitcoin Scripting, Part 1: Transactions and Multisig -
Advanced Bitcoin Scripting, Part 2: SegWit, Consensus, and Trustware -
What is a private key? -
Public keys vs. addresses -
How do I choose a wallet? -
Secure, tiered storage system -
Hardware wallets and attack surface -
Setting up secure storage devices -
What is a private key? -
How do mneomonic seeds work? -
Using paper wallets -
Wallet design and mass adoption -
Cryptographic primitives -
Public keys vs. addresses -
Re-using addresses -
Coin selection and privacy -
Multi-signature and distributed storage -
Nonces, mining, and quantum computing -
Software distribution security -
Protocol development security -
Geopolitics and state-sponsored attacks -
How to get people to care about security -
Honest nodes and consensus -
Why running a node is important -
Full node and home network security -
Running nodes and payment channels -
What is Segregated Witness (SegWit)? -
SegWit and fork research -

Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin.

Follow on Twitter: @aantonop

He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters.

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Translations of MASTERING BITCOIN:



Translations of THE INTERNET OF MONEY:
Spanish, 'Internet del Dinero' (v1) -
French, 'L'internet de l'argent' (v1) -
Russian, 'Интернет денег' (v1) -
Vietnamese, 'Internet Của Tiền Tệ' (v1) -


Music: "Unbounded" by Orfan (
Outro Graphics: Phneep (
Outro Art: Rock Barcellos (

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