Ethereum Q&A: How do smart contracts work?

Ethereum Q&A: How do smart contracts work?

How do smart contracts in Ethereum work? How are operations conducted without middlemen? Do smart contracts work with external inputs or real-world events? Can we make sure that oracles are not corrupted?

These questions are from the MOOC 10.6 session, which took place on October 11th 2018. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron:

Note: Apologies for the colour glitch towards the end of the video.

The Lion and the Shark: Divergent Evolution in Cryptocurrency –
Investing in Education instead of Speculation –
Ethereum, ICOs, and Rocket Science –
Slush17 Panel: Farewell to Centralised Data –
Blockchain vs. Bullshit: Thoughts On The Future of Money –
Why I’m writing ‘Mastering Ethereum’ –
What is Metropolis? –
Smart contract platforms –
Smart contracts, sidechains, and the Lightning Network –
Impact of smart contracts on law and accounting –
Key management and inheritance –
The legality of smart contracts –
Smart contracts and law ambiguity –
Gas and resource allocation –
Intrinsic vs. extrinsic assets –
Altcoins and specialisation –
Ether, ICOs, and securities –
Unstoppable code –
Airdrop coins and privacy implications –
Initial coin offerings (ICOs) –
The token ICO explosion –
‘Coin’ and ‘token’ terminology –
ICOs and responsible investment –
ICOs and financial regulation –
ICOs, disruption, and self-regulation –
Scams, gambling, and regulation –
ICOs and pyramid schemes –
Directed acyclic graphs (DAGs) and IOTA –
Scaling and “Satoshi’s vision” –
“Blockchain, not Bitcoin ” –
Reflections on the last five years –

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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