This is the first part of a more technical talk where Andreas explores Bitcoin script, with examples from the 2nd edition of Mastering Bitcoin, focusing on the use of conditional statements, flow control, guard clauses and time locks. The examples will include advanced multi-signature scripts, hash time lock contracts and asymmetric revocable commitments. Then he answers questions about Bitcoin's quirky bugs, where Bitcoin differs from Ethereum at a scripting level, how SegWit works, how consensus rules change, and whether Bitcoin is more than just a currency.
Watch Part 2 here:
https://youtu.be/pQbeBduVQ4IThis talk took place at the San Francisco Bitcoin Developer (@SFBitcoinDev) meetup on April 3rd, 2017:
https://www.meetup.com/SF-Bitcoin-Devs/events/238773843/Review materials on the topics presented:
Chpt. 7:
https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch07.asciidocChpt. 12:
https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch12.asciidocChapters
2:17 The fundamentals of Bitcoin script
5:00 Bitcoin's operators
6:30 Creating transactions (P2PKH - Pay to Public Key Hash)
7:42 Public Key CheckSigs, security by obfuscating public keys
9:05 Redeeming the script
12:05 The RIPEMD160 hash operation
14:05 OP_EQUALVERIFY, OP_CHECKSIG, & the elliptic curve digital signature algorithm (ECDSA)
18:30 Summary
19:45 Illustrating scripts: Equal, EqualVerify, CheckSig, CheckVerify, CheckMultisig, CheckLockTimeVerify
23:02 Guard clauses
24:53 Script-based timelocks
26:50 Flow control statements, interactive artificial intelligence
28:35 If, Else, EndIf
33:55 Unlocking scripts, what conditional flows do in Bitcoin
35:44 1-of-2 multi-signature script
38:28 1-of-2 multi-signature script with guard clause
41:30 2-of-3 multi-signature script
43:20 2-of-3 multi-signature script with timelock guard clause
44:42 BIP-113, how time is referenced in Bitcoin
46:58 Backup clause & other nuances in multi-signature schemes
52:36 Game theory, complexity from simplicity
53:45 2-of-3 multi-signature script, unlocking
RELATED:
Bitcoin: Where the Laws of Mathematics Prevail -
https://youtu.be/HaJ1hvon0E0The rules of Bitcoin (part 1) -
https://youtu.be/VnQu4uylfOsThe rules of Bitcoin (part 2) -
https://youtu.be/vtIp0GP4w1EForkology: A Study of Forks for Newbies -
https://youtu.be/rpeceXY1QBMIrreversibility and consumer protection -
https://youtu.be/R107YWu5XzUAndreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and well-respected figures in bitcoin.
Follow on Twitter: @aantonop
https://twitter.com/aantonopWebsite:
https://antonopoulos.com/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.
THE INTERNET OF MONEY, v1:
https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8MASTERING BITCOIN:
https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042[NEW] MASTERING BITCOIN, 2nd Edition:
https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388Subscribe to the channel to learn more about Bitcoin & open blockchains!
If you want early-access to talks and a chance to participate in a monthly LIVE Q&A with Andreas, become a patron:
https://www.patreon.com/aantonopMusic: "Unbounded" by Orfan (
https://www.facebook.com/Orfan/)
Outro Graphics: Phneep (
http://www.phneep.com/)
Outro Art: Rock Barcellos (
http://www.rockincomics.com.br/)
Join the aantonop Channel:
https://aantonop.io/joinaantonopytAbout the Site 🌐
This site provides links to random videos hosted at YouTube, with the emphasis on random. 🎥
Origins of the Idea 🌱
The original idea for this site stemmed from the need to benchmark the popularity of a video against the general population of YouTube videos. 🧠
Challenges Faced 🤔
Obtaining a large sample of videos was crucial for accurate ranking, but YouTube lacks a direct method to gather random video IDs.
Even searching for random strings on YouTube doesn't yield truly random results, complicating the process further. 🔍
Creating Truly Random Links 🛠️
The YouTube API offers additional functions enabling the discovery of more random videos. Through inventive techniques and a touch of space-time manipulation, we've achieved a process yielding nearly 100% random links to YouTube videos.
About YouTube 📺
YouTube, an American video-sharing website based in San Bruno, California, offers a diverse range of user-generated and corporate media content. 🌟
Content and Users 🎵
Users can upload, view, rate, share, and comment on videos, with content spanning video clips, music videos, live streams, and more.
While most content is uploaded by individuals, media corporations like CBS and the BBC also contribute. Unregistered users can watch videos, while registered users enjoy additional privileges such as uploading unlimited videos and adding comments.
Monetization and Impact 🤑
YouTube and creators earn revenue through Google AdSense, with most videos free to view. Premium channels and subscription services like YouTube Music and YouTube Premium offer ad-free streaming.
As of February 2017, over 400 hours of content were uploaded to YouTube every minute, with the site ranking as the second-most popular globally. By May 2019, this figure exceeded 500 hours per minute. 📈
List of ours generators⚡
Random YouTube Videos Generator
Random Film and Animation Video Generator
Random Autos and Vehicles Video Generator
Random Music Video Generator
Random Pets and Animals Video Generator
Random Sports Video Generator
Random Travel and Events Video Generator
Random Gaming Video Generator
Random People and Blogs Video Generator
Random Comedy Video Generator
Random Entertainment Video Generator
Random News and Politics Video Generator
Random Howto and Style Video Generator
Random Education Video Generator
Random Science and Technology Video Generator
Random Nonprofits and Activism Video Generator
