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Andreas Antonopoulos - Empty Blocks & Valid Chains

5/24/2018

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Bitcoin Q&A: Empty blocks, orphan blocks, and valid chains
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Andreas Antonopoulos - Public Keys vs. Addresses

5/10/2018

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Andreas Antonopoulos - Bitcoin Q&A: Public Keys vs. Addresses
What is the difference between public keys and addresses? How are new addresses generated? How are change addresses generated? Why have two outputs? Do you still pay fees if you are sending bitcoin to new addresses in your own wallet? What is the VanityGen command? What does the SIG_HASH flag do?

These questions are from the MOOC 9.3 and 9.5 sessions which took place on March 2nd and March 16th, 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles.
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Andreas Antonopoulos - April 26, 2018

4/26/2018

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Bitcoin Q&A: Lightning's security model
Are Lightning Network transactions still bitcoin transactions? Do you have to be online? What happens when a party does not commit to an action / send a reimbursement in LN? How will the Lightning Network handle DDoS attacks? How does node banning work?

These questions are from the MOOC 9.5 session which took place on March 16th, 2018. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles.
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Andreas Antonopoulos - April 25, 2018

4/25/2018

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Bitcoin Q&A: Miners, pools, and consensus
How many miners and/or pools are there? Can the distribution of miners be determined? Would mining pools be incentivised to merge? Is miner collusion through 51% attacks a present threat? Could they double-spend their coins? How are they impacted by replace-by-fee (RBF)?

These questions are from the MOOC sessions 7.2, 8.2, and 9.2 covering the Byzantine Generals' Problem, which took place on February 26th 2017, September 15th 2017, and February 23rd 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles.
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Andreas Antonopoulos - April 18, 2018

4/18/2018

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Bitcoin Q&A: Mixing services
How do mixing services work? What are CoinJoin transactions? How much could they improve privacy or anonymity in Bitcoin?
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Andreas Antonopoulos - April 16, 2018

4/16/2018

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Bitcoin Q&A: The value of proof-of-work
Can a blockchain exist without miners, proof-of-work, or blocks? What are the implications for security, trustlessness, and decentralisation? Not all distributed ledgers are blockchains. What is the influence of alternative energy generation on mining in proof-of-work cryptocurrencies? Should we use alternative algorithms that generate "useful work" in addition to mining cryptocurrencies? The hard promises that Bitcoin provides are valuable and useful in themselves. What is the difference between proof-of-work and proof-of-stake?

Note: These sessions were recorded live using Google Hangouts. The audio and video may be slightly out of sync at some points.

These questions are from the MOOC sessions 7.2 and 8.2, covering the Byzantine Generals' Problem, which took place on February 26th 2017 and September 15th 2017 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles.
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Andreas Antonopoulos - April 11, 2018

4/11/2018

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Bitcoin Q&A: Honest nodes and consensus
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Andreas Antonopoulos - April 09, 2018

4/9/2018

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Bitcoin Q&A: How do mnemonic seeds work?
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Andreas Antonopoulos - April 06, 2018

4/6/2018

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Bitcoin Q&A: Using paper wallets
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Andreas Antonopoulos - April 04, 2018

4/4/2018

1 Comment

 
Bitcoin Q&A: Bitcoin as everyday currency
How will Bitcoin's infrastructure scale to an everyday currency? When will a business model of small retail transactions make economic sense for cryptocurrencies? What stage of grief are the banks at now?
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Andreas Antonopoulos - March 31, 2018

4/1/2018

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Interview: "The Bitcoin Protocol"
In this interview, Andreas answers questions about Bitcoin's development into a secure, border-less system that is already influencing geopolitical relations and decision-making, and why the banks' attempt to offer "blockchains in a bottle" is mostly a re-run of the boring and isolated intranets failing to compete against the innovation of the open internet.
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