3. Blockchain Basics & Cryptography

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MIT OpenCourseWare

MIT OpenCourseWare

4 жыл бұрын

MIT 15.S12 Blockchain and Money, Fall 2018
Instructor: Prof. Gary Gensler
View the complete course: ocw.mit.edu/15-S12F18
KZbin Playlist: • MIT 15.S12 Blockchain ...
In this lecture, Prof. Gensler, explains the basics of blockchain and covers Bitcoin design features, hash functions, blocker headers, Merkle trees, among other related topics.
License: Creative Commons BY-NC-SA
More information at ocw.mit.edu/terms
More courses at ocw.mit.edu

Пікірлер: 623
@Chris-kq3ix
@Chris-kq3ix 2 жыл бұрын
Congrats to everyone who's made it this far! It's interesting how the view count dips so fast the further into the series you get! If you consider the number of people that then do the corresponding readings, I'm sure it's even lower. Still, the knowledge is there for those of us willing to put in the time and effort! Blessings to all!
@JoshuaGayman_SedonaCreekFund
@JoshuaGayman_SedonaCreekFund 2 жыл бұрын
Incredible opportunity and it sure is fascinating to watch that ledger! Readings are great. Are you doing assignments too?
@AmanJaiswalOfficial
@AmanJaiswalOfficial 2 жыл бұрын
Congratulations to you too. Its downhill from this point onwards as you pointed out. But the topic and the way he's explaining this, I am certain I'll get through all 23 of them, coming out as someone with probably a very different perspective than whatever I might have now on blockchain and cryptocurrencies.
@demetrioskasabalis5536
@demetrioskasabalis5536 2 жыл бұрын
I think the count dips in every successful series, because he interrupts the flow of the lecture by encouraging student participation every other minute and that is very annoying to the internet viewer.
@monochromatech
@monochromatech 2 жыл бұрын
I've been working on this course sporadically for a year, so I know what you're saying. Sometimes it's difficult with other obligations. hold fast everyone.
@MarinaGiovannelli
@MarinaGiovannelli 2 жыл бұрын
Where do you see the readings? I only see the book recommendations on the course site. Thank you.
@Whiskey-xp6vu
@Whiskey-xp6vu 3 жыл бұрын
This lecturer is now the chairman of the SEC. I think it is a great appointment and it will give confidence to the markets for investment in the blockchain industry
@radaniel8923
@radaniel8923 3 жыл бұрын
CONFIRMED
@hubertg7100
@hubertg7100 3 жыл бұрын
BTC ETF approval looks good!
@OrimarDez
@OrimarDez 3 жыл бұрын
Watch him endorse true bitcoin, which isn’t btc btw.
@merc7paul
@merc7paul 2 жыл бұрын
Damn future is looking bright
@nickandersen5213
@nickandersen5213 2 жыл бұрын
I hate when people can’t see blockchains the future🤯
@aakashkhithani7210
@aakashkhithani7210 3 жыл бұрын
blew my mind, MY GOODNESSS, never have i ever had such a good lectures, i'm here binge watching blockchain lectures, never thought learning could this much fun and easy.
@deborahbonner9271
@deborahbonner9271 2 жыл бұрын
OMG doing the same.....just started watching this one!!
@ewelinaklimczak3438
@ewelinaklimczak3438 2 жыл бұрын
Z
@ewelinaklimczak3438
@ewelinaklimczak3438 2 жыл бұрын
@@deborahbonner9271 a(€] €e@aa@
@imagevulture
@imagevulture 2 жыл бұрын
thank you MIT and Prof Gensler for this free lecture series! didnt think think I'd rather watch a college lecture than Netflix but now I know I do.
@lehoangv
@lehoangv 2 жыл бұрын
haha totally agree, better than Netflix series
@youcanknowanything8489
@youcanknowanything8489 7 ай бұрын
It is a privilege to be able to listen to Gary Gensler for free like this. Don't forget that these.lectures were presented before he was chosen to head the SEC.
@yojoebananas
@yojoebananas 3 жыл бұрын
This guy understands this stuff so well that he is able to break it down and make it easy to understand. He is astoundingly intelligent.
@xrpkidotec520
@xrpkidotec520 3 жыл бұрын
AND He's the new chairman of SEC!! thanks to biden. He's gonna bring balance to tha crypto markets!!!
@thebigmoneyshow806
@thebigmoneyshow806 3 жыл бұрын
@@xrpkidotec520 thanks for that info. Was wondering about that.
@giambini1969
@giambini1969 3 жыл бұрын
I was just going to write the same thing! He’s really gifted. This is so interesting!
@richdiskin9408
@richdiskin9408 3 жыл бұрын
Totally agree! Let’s hope he does a good job.
@kasl36
@kasl36 3 жыл бұрын
I completely agree. I believe he is going to pave the way for mass adoption.
@geoff5262
@geoff5262 2 жыл бұрын
I am from Jamaica, can believe I am listening to a semester of lecture from MIT... Bless be God.. Thanks MIT
@curtisbloodworth8243
@curtisbloodworth8243 2 жыл бұрын
Gary Gensler earned a whole new level of respect from me , this damn guy is a genuis
@Voy2378
@Voy2378 2 жыл бұрын
Not a fan of cronies, but it is amazing that this guy is still learning complex new stuff in his 60s, most people in their late 20s give up on learning new stuff.
@gilian2554
@gilian2554 2 жыл бұрын
I never thought I would ever be watching an MIT lecture and basically already understand all of it.
@csmlyly5736
@csmlyly5736 2 жыл бұрын
Just goes to show how much of learning and advancing oneself is really just about showing up and committing. Good on you! It’s a nice feeling!
@survivalSC
@survivalSC 9 ай бұрын
I make all the people that work in my office watch this MIT blockchain course. Then I give them a test. It helps to make sure when we have tech support problems I know all my people can at least think problems out in a group
@bryc0115
@bryc0115 3 жыл бұрын
Idk it's nice to know that knowledge is free. And that the majority of people watching this have probably understood the ins, outs and the importance of btc and how money and society work in relation for a while. Any ways thank you MIT for the lectures!
@bits_for_bytes
@bits_for_bytes 3 жыл бұрын
This isn’t knowledge, this is a con artists interpretation of “crYptO”
@onefull1
@onefull1 3 жыл бұрын
@@bits_for_bytes The concept of decentralization is what is truly at the heart of the advent of blockchain technology. It is much more than only crypto currency. It levels the playing field and pulls the rug out from profiteers, i. e. bankers for one, whom thrive from a privileged position of the middleman enabling one and all to equally participate whether rich or poor.
@boulevarda.aladetoyinbo4773
@boulevarda.aladetoyinbo4773 3 жыл бұрын
What a strategy!...and now, Gary's the US-SEC Chairman!
@anestezialmanya
@anestezialmanya 3 жыл бұрын
I watched this Video last year, and i was really proud too see that he ist being honored
@goadpadya280
@goadpadya280 3 жыл бұрын
I am on the 3rd , lecture ... its great learning ...thanks MIT
@multiversossaltamontes7374
@multiversossaltamontes7374 2 жыл бұрын
and yt. MIT is the content, KZbin the platform. and you a consumer, a byproduct. lol
@WGchamara
@WGchamara 7 ай бұрын
Thank you MIT & prof. Gary Gensler.
@smilylife7515
@smilylife7515 2 жыл бұрын
A PRAISE FROM A 20 YEAR OLD BLOCKCHAIN LOVER (YES ME💓😃) :- Dear professor gensler , your COMPUTATIONAL power is really great. You are a genius, we love how you are defining this brutal technology in an interactive and fun way, I swear I'll attend all the classes and I'm also preparing notes and trying to do the homework you offer. THIS CONTENT WORTH MILLIONS OF DOLLARS. GREAT . WE ALL ASPIRANTS ARE BLESSED
@KnockoutInvesting
@KnockoutInvesting 3 жыл бұрын
Last September 2020 I bought 3 bitcoin at $9,000 when my friends told me I'm stupid for buying so high. Best decision ever.. 😂😂😂
@TheBitcoinRevolution
@TheBitcoinRevolution 3 жыл бұрын
And continue to HODL through-out the volatility. This is normal and what gives you exponential gains.
@predatel_rodini
@predatel_rodini 3 жыл бұрын
Are you still holding it after bitcoin fell down from 65k to 30k last week?
@Magnus_E
@Magnus_E 3 жыл бұрын
@@TheBitcoinRevolution Hahaah margincalled... :P
@tomcosgrove100
@tomcosgrove100 3 жыл бұрын
@@predatel_rodini pppppp
@rigolemonade
@rigolemonade 3 жыл бұрын
@@predatel_rodini ofc. Why should trade the best asset in the world vs crap paper money.
@isabelserra1837
@isabelserra1837 2 жыл бұрын
I’m astonished by the quality of this lectures and it’s free! Thank you so much I really appreciate this MIT
@elizabethgutierrez8431
@elizabethgutierrez8431 2 жыл бұрын
This is the best way I have found to learn about this new tech. Doing the readings, the assigments and everything and the questions from the people there are really good too. Thanks for sharing it MIT.
@threecommayoda9639
@threecommayoda9639 3 жыл бұрын
It took me 4 hours to get through this. Thanks for the free content
@imatardable
@imatardable 3 жыл бұрын
It’s an hour and fifteen minute lecture...
@YoungDen
@YoungDen 3 жыл бұрын
@@imatardable - notes and memory
@Leglocker
@Leglocker 3 жыл бұрын
1.5x speed boi
@TheBitcoinRevolution
@TheBitcoinRevolution 3 жыл бұрын
@@imatardable Not if you are having to absorb/learn new material, obviously.
@johnguanciale258
@johnguanciale258 2 жыл бұрын
Captain rewind
@sanvidremane60
@sanvidremane60 2 жыл бұрын
These slides are exceptionally good. Great learning curve and the professor makes learning blockchain very exciting. I would highly recommend anyone who wants to do anything with crypto to watch this course.
@TonyCalice
@TonyCalice 2 жыл бұрын
Positive feedback to MIT open courses as a whole & Gary Gensler's class in particular. Thank you MIT for making this and your previous technical courses available. While I am typically a passive listener of educational content, professor Gensler and the student engagement in this course is really terrific. I feel obligated to provide the following feedback. For what is worth, here's my critique of the course so far. The first two classes had great tidbits about the history of money and finance...but I really enjoyed watching this 3rd lecture tackle the abstract concept of how (cryptography) algorithms could provide technical safeguards in the potential presence of an adversarial actor. Felt like the Prof was still looking for a more perfect/tangible analogy of a HASH value. Also (as with the previous lectures) I enjoyed the technical tidbits about how big a blockchain header is relative to the size of the blockchain. This lecture seemed to demonstrate the caliber of students at MIT in addition to the impressive professors.
@CD-pt8vy
@CD-pt8vy 3 жыл бұрын
Congratulations on your new position Mr Gensler
@DaniIhzaFarrosi
@DaniIhzaFarrosi 3 жыл бұрын
Head of SEC?
@kennethkeen1234
@kennethkeen1234 3 жыл бұрын
He is fake.
@rhiannonkiah
@rhiannonkiah 3 жыл бұрын
@@kennethkeen1234 who?
@levels1937
@levels1937 3 жыл бұрын
Its crazy how whenever I watch crypto vids I get funneled back to this playlist .I mean it makes since now that the guy is the head of the SEC I guess.Good job algorithm!
@gnzeu4tpns91
@gnzeu4tpns91 3 жыл бұрын
i feel much more motivated to dig deeper into blockchain after watching this lecture. best speaker for blockchain that i have encountered
@bingewatch_anime
@bingewatch_anime Жыл бұрын
this lecture had been told to me to learn by my university as blockchain is my self paced course .It was really good lecture even though i was lacking on so many points in lecture i found it very interesting to eatch and not drop on some point i dont get.so i think he is one of the best teachers i had ever been taught ..hats off sir
@user-yw2ke2bm3o
@user-yw2ke2bm3o 2 жыл бұрын
The information I learned from these 3 classes are very informative and fascinating. I appreciate everyone who made this far.
@ThePsysard
@ThePsysard 3 жыл бұрын
Thank you MIT for these amazing classes! 💐❤️
@noatycrypto7524
@noatycrypto7524 3 жыл бұрын
Investing in bitcoin now is the best 💯✔️
@kennethkeen1234
@kennethkeen1234 3 жыл бұрын
You are ALL pitiful. Not a single critical comment, not ONE. Wanna buy a bridge?
@N1GHTWOLF1
@N1GHTWOLF1 2 жыл бұрын
@@kennethkeen1234 Why be so negative?
@knee-long1255
@knee-long1255 2 жыл бұрын
This really is incredible, never thought I'd be so intrigued learning about block chain!
@axelriet
@axelriet 2 жыл бұрын
Thank you very very much for this series, I’m learning a lot. Those who want to dig deeper on RSA, hash functions, elliptic curve cryptography, and random-number generation can probably benefit from a specialized book on the subject.
@matthewblanc
@matthewblanc 3 жыл бұрын
A nonce isn't a random number that is used once, it's just a number that is used once. In fact with EVM based chains the nonces of your transactions have to be in exact numerical order with no gaps or your transaction will never confirm. I you successfully send a transaction with nonce 1 and then try to send another with nonce 3 the second transaction will not be considered for confirmation until a transaction with nonce 2 is submitted.
@mexticancun7521
@mexticancun7521 2 жыл бұрын
all this for free. lord what at time to be alive. just wished this series was recommended to me when it came out! but nonetheless very thankful
@jackc3201
@jackc3201 2 жыл бұрын
Truly a hidden gem of KZbin, thank you for the amazing content 👏👏
2 жыл бұрын
This is so interesting series of videos, that when I watching it during Im making my stocks analysis and is time to relax and play Diablo III I have a big problem to switch this video off and play game. Proffesor Gensler, you are great, and also the audience!
@lefttraces7207
@lefttraces7207 3 жыл бұрын
I’m confused if Larry is still there for the lecture or not
@fjanoos
@fjanoos 3 жыл бұрын
So is Gary !
@jzsoldaz6406
@jzsoldaz6406 2 жыл бұрын
I started watching just to find out if Larry was in the lecture again.
@JaBarge303
@JaBarge303 Ай бұрын
Watching this in April 2024 16 days before the halving. BTC is is valued around $67,800
@JoshuaGayman_SedonaCreekFund
@JoshuaGayman_SedonaCreekFund 2 жыл бұрын
Leaving my mark here at this mile marker. Thanks MIT and Professor Gensler. Peers, If you’ve made it this far, keep going!
@laincalvo9661
@laincalvo9661 2 жыл бұрын
Que gran curso! Me encanta, motiva y aprendo un montón, la calidad de la información y como esta organizada es perfecta. Saludos desde Argentina 🇦🇷
@ltserge3226
@ltserge3226 2 жыл бұрын
Cryptographic hashing is not only a way to take a lot of information and put it in fixed form, but The key thing is the hash functions tie the blocks together cause hash functions can point to previous info 1:13:11
@randellclarke7947
@randellclarke7947 3 жыл бұрын
I’ve just spent an hour down the rabbit hole of blockchain like he said I would be in lecture 2 😂
@algoryan3338
@algoryan3338 3 жыл бұрын
It’s a series a great one at that, you can go to the next lecture, in the link of the playlist underneath the video
@chrisshevey2228
@chrisshevey2228 3 жыл бұрын
Ha... ignorance is bliss, maybe the blue pill would have been more palatable
@predatel_rodini
@predatel_rodini 3 жыл бұрын
Русскоязычные хомяки отмечаемся под этим комментом. Спасибо mit за уникальную возможность смотреть это из любой точки мира
@zakirakhand562
@zakirakhand562 2 жыл бұрын
What a great academic, so lucid presentation!
@cashmanifestation
@cashmanifestation 2 жыл бұрын
I’m going to MIT for FREE! This is Awesome!❤️❤️❤️❤️❤️
@zhichunxiao5454
@zhichunxiao5454 2 жыл бұрын
Prof. Gary made a mistake with Base58's functionality, which is not designed to compress data, but to make binary data trasmitted over network easily and more visual friendly. The cons of Base58 is it makes data size bigger, not smaller.
@taylorviola5547
@taylorviola5547 2 жыл бұрын
this is a wild video, like outside of the informative nature of it. seeing Gensler talking about needlessly printing money a whole year before the pandemic, and noting one of the creators of Algorand over 6 months before it launched. shows have far we have come in only 3 years
@haikalyusuf4058
@haikalyusuf4058 3 ай бұрын
Cryptographic primitive - Used in communications & computations Hash functions Digital signatures Class 2 Review - Gensler mentions that blockchain isn’t necessarily the complete solution in the context of markets & money & that there are instances when an intermediary is necessary. But of course, there are cases when a decentralized solution will beat a centralized intermediary. - 10 key design features of Bitcoin: 1. Addresses 2. Hash functions 3. Nodes
@stracci_5698
@stracci_5698 2 жыл бұрын
This class is so entertaining I’m awestruck
@marleyzlegacy9208
@marleyzlegacy9208 2 жыл бұрын
these classes are amazing. thank you for posting them!
@liferajib
@liferajib 2 жыл бұрын
What a amazing method of teaching - No brainer why he is the SEC chairman
@seenasingh4297
@seenasingh4297 3 жыл бұрын
Thank you I really appreciate the content. I am from Africa and to get this for free is heart warming.
@thegoonist
@thegoonist 2 жыл бұрын
that base 2 to base 10 conversion trick/estimation at 35:55 was pretty genius and smart btw...for anyone who didnt catch that. shows hes pretty quick on his feet and knows quite a few math tricks
@Indiodyssey
@Indiodyssey Жыл бұрын
I couldn’t believe my eyes when I see this course being taught by GG! Oh how the times have changed….
@shashihnt
@shashihnt Жыл бұрын
Now he has SBF's mess to deal with
@andreienache6290
@andreienache6290 Жыл бұрын
I knew about it when it was released, but I didn't have the balls to study it. Better late than never I guess.
@NFT_Artist
@NFT_Artist Жыл бұрын
You ain’t kidding! We need a SEC reboot, employees who will help USA innovation thrive while also protecting investors. Would be nice if the SEC could be employed by an actual election.
@sunriseeternity300
@sunriseeternity300 3 жыл бұрын
I love these videos. Thank You MIT
@curtisbloodworth8243
@curtisbloodworth8243 2 жыл бұрын
how does Gary retain all this knowledge ? unbelievable
@donparmesan1012
@donparmesan1012 2 жыл бұрын
thank you MIT for sharing this amazing course for free!
@somdeepsengupta8497
@somdeepsengupta8497 2 жыл бұрын
Gem of a course. Good stuff prof..
@ahmed_shawa
@ahmed_shawa 2 жыл бұрын
Thanks MIT for sharing knowledge with the world!
@brunoa2893
@brunoa2893 3 жыл бұрын
Excellent and easy to grasp concepts. Need one update maybe, at 1:00:20 Bitcoin will use soon Schnorr signature instead of elliptic curve signatures
@buzzpedrotti5401
@buzzpedrotti5401 2 жыл бұрын
This is a very helpful and clear class. Thanks.
@blixx87
@blixx87 3 жыл бұрын
Damn we sittin here watching this for free not having to go in a debt with a student loan, while everyone in that room had to pay thousands just to hear this. Lmao
@blixx87
@blixx87 3 жыл бұрын
@Jesse Carmona I make 6 figures without a degree net worth in high 6 figures
@blixx87
@blixx87 3 жыл бұрын
@Jesse Carmona just proving you wrong. If you live with that mind set you will stay poor forever. You took the negative from my post then the positive outlook. That’s a poor mindset
@age0fdef1
@age0fdef1 3 жыл бұрын
Facts! And still just a hundred views yeez
@rudeboymon3177
@rudeboymon3177 3 жыл бұрын
Ha thinking the same thing. The only person thats not gonna have to pay their debt is the bimbo that couldn't read. Shes gonna marry someone thats gonna pay it for her 😆😜
@rowyaboat3107
@rowyaboat3107 3 жыл бұрын
well said lol
@yvsh
@yvsh 3 жыл бұрын
Students attending this class in 2018 who invested in BTC have seen their investment grow up to 10x to 20x(depending on the time in the year 2018) of the initial amount. Damn.
@frost531
@frost531 3 жыл бұрын
Hopefully the kids in this class considered Ethereum and its projects as well after being exposed to it early on. A 2-3 cent ADA earlier this year has been rocketing towards a 30-50x increase depending how close to the bottom you accumulated
@yvsh
@yvsh 3 жыл бұрын
@@frost531 Yes! Hopefully they did
@haha-eg8fj
@haha-eg8fj 3 жыл бұрын
It's not investment it's just speculation. In most places you cant use bitcoins to purchase anything. You still cant use it to purchase a pizza in most countries just like 10 years ago when it first came out. And its value changes abruptly during a month or even in a week.
@frost531
@frost531 3 жыл бұрын
@@haha-eg8fj can I tell you something? It wasn't built to purchase pizza with. Also it's the highest performing asset that we've ever seen in our lives. Get right or get left
@noatycrypto7524
@noatycrypto7524 3 жыл бұрын
W•H•A•T•S•A•P•P +•1•3•3•2•4•5•6•7•2•0•1 l•n•v•e•s•t•inC•r•y•p••t•o B•T•CA•N•D•E•T•H......iiiiiiii.....
@bijanatri2204
@bijanatri2204 3 жыл бұрын
Awesome show !
@emmanuelhoundo8449
@emmanuelhoundo8449 3 жыл бұрын
i'm honestly just marveled that i made it to class 3 of an MIT course...
@uria702
@uria702 3 жыл бұрын
This is a course specifically designed to be open to anyone in the MIT community. It’s from the business school. An engineering or computer science course in the same topic would be a lot more difficult. I’m happy they make courses like this that the public can follow along with. I learned a lot from this course.
@navsquid32
@navsquid32 3 жыл бұрын
It’s not an engineering course, my dude.
@algoriticus
@algoriticus Жыл бұрын
That one was a brain buster for me. I fully understood about 60-65% of it at depth, and its ok.
@mezzmarr1209
@mezzmarr1209 3 жыл бұрын
The difficulty rating varies based on how much hash power is available to mine. The nonce value varies to accommodate increased or decreased hash power available to mine the next block. By adding or reducing the zeros in the nonce, the time to hash the next block precisely lands in 10 minute intervals, regardless of how much hash power is added or reduced.
@Brian-tc7ii
@Brian-tc7ii 3 жыл бұрын
Are all 4 year halving cycles precise enough to predict the next halving? If so when is that event going to happen?
@mezzmarr1209
@mezzmarr1209 3 жыл бұрын
@@Brian-tc7ii The halving happens at specific block heights, about every 4 years. The fourth Bitcoin halving is going to happen in 2024 after 840,000 blocks will be mined, and the reward per block will be 3.125 BTC instead of the current 6.25.
@Brian-tc7ii
@Brian-tc7ii 3 жыл бұрын
@@mezzmarr1209 Thank you. I question because if blocks are mined precisely every 10min, we should precisely determine the day and time of halving. What am I missing?
@EJBWraithlin
@EJBWraithlin 2 жыл бұрын
The question at 49:45, the lecturer misunderstood/mis-answered (or was it me?) I think the point being made by the student is that: Assume some random set of transactions (and other bits) that produce a collusion with an existing hash in the blockchain. The probability that all of those transactions are also simultaneously valid is very low, and therefore the block would be rejected in many cases - thus reducing the number of possible collisions. Or put another way, it's not sufficient to find a set of transactions (and nonce etc) that produce the same hash, those transactions must also be completely valid for the starting ledger state.
@amirakhatib7765
@amirakhatib7765 Жыл бұрын
Your mathematics is top tier babyyy
@brainstormingsharing1309
@brainstormingsharing1309 3 жыл бұрын
Absolutely well done and definitely keep it up!!! 👍👍👍👍👍
@sikhuntaka3740
@sikhuntaka3740 3 жыл бұрын
Wow, this lecture series is amazing, thank you.
@del3485
@del3485 3 жыл бұрын
Thank you MIT courseware
@kennethkeen1234
@kennethkeen1234 3 жыл бұрын
Well done child. Go back to mommy.
@del3485
@del3485 3 жыл бұрын
@@kennethkeen1234 Thanks peerce
@dailymanager7133
@dailymanager7133 3 жыл бұрын
Blockchain is the evolution not only of economy but also for social life and sciences 1 of biggest fans
@kennethkeen1234
@kennethkeen1234 3 жыл бұрын
Get educated.
@TomPrior16
@TomPrior16 Жыл бұрын
Great engaging teacher!
@manosijroychowdhury7209
@manosijroychowdhury7209 2 жыл бұрын
One of the most valuable resources available on the internet about blockchain. Can anyone tell me which is the demo is he talking about?
@agusgunungmerapi4939
@agusgunungmerapi4939 3 жыл бұрын
thankyou for this video. I want to ask about technical presentation. How to switch between slide and presenter? is there an operator to operation this? thank you
@mattm6178
@mattm6178 3 жыл бұрын
that first dude lol who read the book 5 years ago this is an inspiration if you realize hes at that class now , the implications haha
@borein995
@borein995 3 жыл бұрын
Wow, this course is addictive.
@goksuokar288
@goksuokar288 2 жыл бұрын
Who is here being reminded of how much has changed in just 3 years!! Just a mind blowing that Bitcoin was worth $6,500 when this lecture was being recorded.
@mairajamil001
@mairajamil001 2 жыл бұрын
42,825 right now.
@666gene
@666gene 3 жыл бұрын
The time stamp is not what causes the difficulty adjustment its based on the last 2016 blocks
@bits_for_bytes
@bits_for_bytes 3 жыл бұрын
The guy is a con artist, he probably hasn’t even looked at the source code himself, or made a contribution. But he’s a shill like the rest, so he’ll be in charge of it.
@mezzmarr1209
@mezzmarr1209 3 жыл бұрын
The nonce value determines the difficulty.
@andikaonyoutube
@andikaonyoutube 2 жыл бұрын
Mr Gensler provided very detailed explanation about bitcoin and its cryptography.. could he be Satoshi Nakamoto or the part of the group??
@tomasz-waszczyk
@tomasz-waszczyk 3 жыл бұрын
Thanks for the content!
@sketch1985
@sketch1985 3 жыл бұрын
Does the word knots also transfer to the speed of a boat? Mph or kph are accurate but speed of a boat it surely Less accurate ?
@simonbrown9695
@simonbrown9695 3 жыл бұрын
this is absolutly amazing cant believe this is the guy now advising biden on finance for usa.......
@melliotbarrett
@melliotbarrett 3 жыл бұрын
Should be good for crypto!
@still1.
@still1. 3 жыл бұрын
Hopefully good for Crypto and not just another Politician power grab
@cryptographadam
@cryptographadam 3 жыл бұрын
Right! I started watching this lecture at the end of 2020 and then just briefly after Gensler was appointed, exciting!
@simonbrown9695
@simonbrown9695 3 жыл бұрын
@@cryptographadam top tip if your into buying crypto look at cornell university lecturer and his project avalanche....also note the person in gensler class at MIT he keeps refering to as a proffesser with phd is now running algorand it if nyc is the finance capital of world,,,,,,,,,see my point
@rhiannonkiah
@rhiannonkiah 3 жыл бұрын
@@simonbrown9695 ohh 😲 I need to look into this !
@sanketdalwadi5672
@sanketdalwadi5672 3 жыл бұрын
Could anybody tell which books were used in this course?
@marpalpalmer8337
@marpalpalmer8337 11 ай бұрын
Great teacher. Thanks so much for this lecture Prof. Gary
@MindfulBanking
@MindfulBanking 2 жыл бұрын
This is gold ❤️
@goollthebest
@goollthebest 2 жыл бұрын
I love this guy!!
@taribobriggs7638
@taribobriggs7638 3 жыл бұрын
I stumbled on this last Night.. What an amazing insight..
@avdilluma1652
@avdilluma1652 3 жыл бұрын
New sec chair shipe 🤲💎
@deeshareshmi8338
@deeshareshmi8338 4 ай бұрын
What is the video that Prof. Gensler referrred to multiple times in this video? I only understood about half of today's class and was wondering if that would help.
@anhanryhu8204
@anhanryhu8204 2 жыл бұрын
Thanks MIT, MIT has made me think that I am now MIT, not at MIT...
@evanparshall1323
@evanparshall1323 2 жыл бұрын
This is a great lecture but I am confused by which order everything occurs. In order to mine the next block, don't the transactions from the current block have to be completed as indicated by the merkle root hash? Wouldn't that make for a lot of wasted time that miners could be mining? How can you be continuously guessing nonces if the transaction list is not fully determined?
@anabelaoliveira5085
@anabelaoliveira5085 Жыл бұрын
it takes the longest verified chain of transactions
@charlesdalton9058
@charlesdalton9058 4 жыл бұрын
28:32 interesting analogy Gary
@marksalvioli693
@marksalvioli693 4 жыл бұрын
I disagree with it honestly
@bits_for_bytes
@bits_for_bytes 3 жыл бұрын
@@marksalvioli693 that guy is a wolf in sheep’s clothing, a con.
@mohammadrahmaty521
@mohammadrahmaty521 3 жыл бұрын
Great content. Thank you!
@user-gc5kv3cd7j
@user-gc5kv3cd7j 2 жыл бұрын
Im half way, my notes for questions: 1. Why timestamp needed at all, if the order of blocks what’s matters 2. How can nonce guarantee we get output hash with zeros? Could such nonce nonexistent
@dadswithapurpose3167
@dadswithapurpose3167 3 жыл бұрын
How did these math tech guys become the guys I think are so cool. The 15 year old version of myself would kick my own butt.
@johndianora7427
@johndianora7427 3 жыл бұрын
Is what Professor Gensler's describing at 46:50 or so as "infeasible but not impossible" what happened in the past few days that made people believe that there was a so-called "double spend"?
@chrislombardi3968
@chrislombardi3968 3 жыл бұрын
No, the so-called "double-spend" issue is related to the mining question that other student raises, not the identical hash question. If two miners complete a block at roughly the same time, each will start propagating different versions of block-chain reality through the network. This is called a consensus fork. It happen fairly regularly, and these forks are always resolved eventually -- most within 10 minutes when the next block is mined. The media report called a consensus fork a double-spend incorrectly, either out of ignorance or malice, we don't know.
@johndianora7427
@johndianora7427 3 жыл бұрын
@@chrislombardi3968 thank you. I got through session 4 last night and there was a great deal of info about consensus forks and so-called "stale" or "orphan" blocks. This makes sense. Thanks for reaching out.
@minichanz
@minichanz 3 жыл бұрын
Lamestream media is what happened. You should know that.
@minichanz
@minichanz 3 жыл бұрын
@@chrislombardi3968 thanks
@mezzmarr1209
@mezzmarr1209 3 жыл бұрын
There was no double spend hashed into any block.
@asepigun
@asepigun 3 жыл бұрын
I'm watching this when BTC is valued $56K
@mikemerlin4020
@mikemerlin4020 3 жыл бұрын
There is no way bitcoin can continue to rise
@josh0340
@josh0340 3 жыл бұрын
@@mikemerlin4020 Bitcoin will be way over 100k In the future
@siscokid528
@siscokid528 3 жыл бұрын
@@mikemerlin4020 see
@captoor5022
@captoor5022 3 жыл бұрын
@@mikemerlin4020 the only way this is true is if AGAIN central power manipulates another asset
@DRIFTRAGE
@DRIFTRAGE 3 жыл бұрын
@@mikemerlin4020 It will!
@nosuchthing8
@nosuchthing8 Жыл бұрын
Question: If there are 10 to the 8 Satoshis per bitcoin, is that why that is the granularity of a bitcoin? That is, I have heard that you can break up a bitcoin into one out of a hundred million. Or, 10 to the 8th.
@ricardolarsen4171
@ricardolarsen4171 2 жыл бұрын
I heard that the last Bitcoin Will not be mined before 2120…. Gerry saying 2040! Which one is correct?
@davecorley5514
@davecorley5514 Жыл бұрын
Where can I find the Bosworth blockchain demo? Prof/Chairman Gensler refers to the demo app constructed by Andreas Bosworth. A link is presented in the introduction that links to a website that is now “owned” by someone other than Bosworth. Please point me to the actual demo app, not the video. Thanks
@FullMetalGundam
@FullMetalGundam 2 жыл бұрын
‘How’s my math?’ What a boss 🤣
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