Cryptocurrency Explained: Understanding "Double-spend", Block Re-Organization, & Consensus [Bitcoin] скачать в хорошем качестве

Cryptocurrency Explained: Understanding "Double-spend", Block Re-Organization, & Consensus [Bitcoin]

Today there were headlines about a "double-spend" in bitcoin! Many took that to mean that bitcoin has a catastrophic flaw (it doesn't) or the network is not secure (it is) or that bitcoin is somehow broken (it's not). Watch this video to learn the truth about what a double-spend is, what it's not, and how to separate FUD from facts. tl;dw: Nothing abnormal happened. Chapters 0:00 Did a double spend happen on bitcoin? 1:31 What happened? 5:46 Miners are competing 18:53 2 competing blockchains 20:47 Consensus fork 22:41 How is consensus fork resolved? 26:10 What it means when someone says my transaction has confirmation 27:25 This process ensures that double spends are not successful 28:53 2 miners found 2 blocks simultaneously and broadcast them 29:17 Bitmex research and monitoring 29:58 What happens to transactions in those 2 blocks? 32:33 The Mempool 34:42 Double spend attempt 38:19 This doesn't matter for small amounts 41:47 Risk assessment 43:28 I would sell my house for 0 confirmation 44:56 Miners will take the most fee they can 48:59 How do we move forward? It seems fake news is becoming a major problem within bitcoin. 53:39 Do you think it's easier to "fake articles" about bitcoin than it is about anything else? Given the complexity of the blockchain and how so many people that hold bitcoin don't really understand it 54:23 Was it the same transaction in the two blocks? It seems the amount spent is different. If yes, could it be indicative of someone deliberately trying to spend the same bitcoin twice and testing waters if there was some protocol flaw? 56:59 In my opinion what happened is too unlikely without being premeditated. Maybe someone has been propagating two different transactions like these for a long time until he finally got lucky and they were precisely included in 2 competing blocks 58:22 Would a node continuously propagating competing transactions get banned from connecting to the peer-to-peer network? 1:01:11 I think it would be beneficial to explain how a merchant should treat a bitcoin transaction and how the number of confirmations to wait before accepting a transaction should possibly scale. 1:10:21 Can Proof-of-Work provide immediate block finality like modern Proof-of-Stake algorithms 1:12:29 Why the clickbait title? 1:13:43 Announcement - Open topic Q&A 1:14:16 One of the solutions to confirmations is the lightning network 1:15:55 Conclusion Are you interested in really understanding bitcoin? In this video, aantonop (one of the most trusted, unbiased sources of crypto info) answered questions bitcoin transactions, network double spends, how consensus works, and much more. Don’t miss Andreas' version of what happens if you let someone drive away with your car after only 1 confirmation. COMMENT with your questions and let us know how you like this video. SUBSCRIBE to this YouTube channel and select the bell 🔔 for notifications:    / @aantonop   JOIN this YouTube channel to become a YouTube Community Member and access custom emojis and other perks:    / @aantonop   BECOME a Community Builder:   / aantonop   You may already know that Andreas’ mission is to educate as many people as possible about Bitcoin and open blockchain technologies. Watching and sharing these videos is one way to do that. Thank you for being part of this mission! About aantonop: Andreas isn't promoting a company or an organization; he's paid by the community (people who support this work on Patreon and YouTube) and provides an unbiased look at open blockchain technologies, what they can do for our societies, and how to get involved (if you decide you want to). Learn more at https://aantonop.com **Learn More From Andreas’ Workshops, Books & Events* Amazon & Kindle: http://www.amazon.com/-/e/B00MVAG8Z8 Audible: https://www.audible.com/author/Andrea... E-books & Merch: https://aantonop.io/shop Patreon:   / aantonop   Website: https://aantonop.com Workshops: https://aantonop.com/workshops **Connect with Andreas on Socials** Facebook:   / andreasmantonopoulos   Instagram:   / amantonop   LinkedIn:   / aantonop   Twitter:   / aantonop   Music: "Unbounded" by Orfan (  / grassfedbitcoin  ) Thanks for watching!