Thank you so much for this enlightening video it has helped me greatly. Many a time new comers are indecisive on how to start when it comes to their personal investment growth. But great investors can provide proper guidance...
True< this is a scary time for new investors but the best thing you can do is not to make decisions based on emotions. This could actually be a good time to buy more of your high conviction stocks or crypto on a discount. Wealth is created during bear markets, not bull markets. If your portfolio is really affecting your mental health then delete the app and go for a walk. Let the market do its thing and have a long time horizon. I buy and just trade long term more than ever, I have made over 16` btc from day trading with Mark Maxwell in few weeks this is one of the best medium to backup your assets incase it goes bearish…
My growing love for crypto caused me to explore until I came across Mark Maxwell (although I'm trying to avoid sensationalism) he is by far the best. No hype for hype's sake, but great inspiration to trade crypto.
Wow, you know Maxwell too, he has been helping alot of [people recover their losses from the crash, he's all we need right now. Trading has so much advantages as it is volatile, this is a perfect time to partake in it folks.
0:00 intro 1:47 cryptographic hash functions 20:28 hash pointers and data structures 29:23 digital signatures 39:03 public keys as identities 44:32 a simple cryptocurrency
Slide Commitment API: What's the purpose of the key? The only thing you publish at beginning is commitment. Message is kept secret until opening envelope. So you can easily do only com=h(msg) and publish com. Nobody can reveal msg from com. Message originator can't forge original message because he can't find msg' with the same hash h(msg)=h(msg'). Everything works without the key as well. All you need is clear hash.
Qestions: 14:00: "...returning as commitment: is it "hash(key) + Message" *or* "hash(key+message)"? 14:15: When the key+message was given to the verifier so he could hash it for comparsion? Great lecture!
I love the grounded reality of this channel, its normal to see so many investors panic amid a worsening bearish market but it is also important to note that the market situation is nothing new in the crypto world. Several factors are driving negative sentiment in the stock and crypto markets right now including inflation, a shaky stock market, rising interest rates, and recession fears. As a result, BTC has dropped significantly from its all-time high, breaking below several key technical levels. As a crypto investor, the current situation might seem bleak. However, there are several tried and tested expert suggested investment strategies that can help you accumulate the current crypto storm, in few weeks of implementing trade with accurate signals directly from Theo Ryan, I have been able to accumulate over 19.5 btc despite the current state of the market.
@@newnew80793 Thanks for sharing his telegram details, this gave me a small amount of hope thanks, i’ll surely reach out to him and start learning the right way, tired of loosing from price drops,
I normally don’t do this, but coming across Theo Ryan in this channel, I just have to say something. He is indeed a tutor, he guided me even when I was being naive to the basics of trading. Thanks to Theo Ryan today I have made reasonable amount of crypto stack up and a good trading capital.
13:45 So commit(msg) returns (com, key), where in reality this is equal to (H(key|msg), H(key)). Does this mean that the key which is to be published is actually equal to H(key)? In that case, how could it possibly be that the verification method which uses the published key(aka H(key)) could ever succeed, since it will always be doing: verify(com, H(key), msg):=H(H(key)|msg)==com bearing in mind that com=H(key|msg).
Typing out my questions as I make my way through the video... I'll probably be posting multiple times... - When discussing the commitment API around the @14:28 mark, why do hash the 256 bit key? H(key) - Is it because we do "H(key | msg)" and theres some sort of communitive property? - Is "binding" essentially the same as saying the hash function is collision-free (impossible to find collisions)
More Qeustions: @23:48 - How is the data from in a tamper-evident log stored? In a key value store? Since you are not using pointers to memory you need an auxilary store right? - Does the prev H(arrow) include the prev pointer AND the data or just the data? It would make more sense to include both right?
I can recommend Mr William charle he is a good broker and also expert in crypto currency he can help you get More informations and knowledge about Bitcoin He's available on what's app *+1 8 1 8 7 2 2 9 1 4 5*
Arrow pointers under heading of 'Blockchain' and 'Detecting Tempering' should point to previous/parent block H( ). It correctly mentions previous H( ) though arrow pointer shows next H( ). Both Bitcoin and Ethereum Block Header stores parent H( ) which is previous H( ). Please correct this.
I have a thought about the identity in Privacy. When analyzing the behavior of an address to find out who that is, isn't it a good idea to use Machine Learning to run through the layers and to update the output over time? The activity of the address can be the input layer, the probability that that is Joe would be the output layer.
I would like feedback on this concept Imagine a hash being generated by number string occurring only once in space+time would that not eliminate any "collisions?"
For cryptocurrency mining and how to make good wages on your invested funds contact me (isaacken70@gmail.com ) and I'll show you how i made over $500k in 3 months and the secrets behind it.
@24min: re tampering: i undertand that tampering is not possible in th middle of the block chain but what if the tampering occurs at the very end of the chain (at the most recent "link"). would that not be possible?
at 7:16 he says "that if we know X and Y have the same hash, then it's safe to assume that X and Y are different" Did he mean to say that they are the same? The formula above shows "If we know H(x)=H(y), it's safe to assume that x=y"
yes H(x)=H(y) it is safe to assume x=y but it is rare situations where H(x)=H(Y) where x!=y it means it is difficult to find where Hash values are same with different X and Y. I think this is the concept he explained. If I make any mistake please correct me .
Is signature the way to prove , that someone is holding certain private key? Other words do we have another API for signature saying: isTheSameSK(pk,sig1,sig2)? This is like asking: is sig1 and sig2 made by the same person ? Or i can send a msg2 to this person and ask to sign it and later verify he also signed msg1?
Are these lectures the same ones being used for Coursera's Cryptocurrency course? I'd just sign up for the course but I hear the assignments on this specific course are pretty frustrating.
Great work .Would like to request Blockchain sync that covers and the technical background for Peer to peer network. Covering Topics like 1. Bitcoin Peer Discovery 2. Inital Block Download 3. HeaderFirst Block Downloads. 4. Orphan Blocks and 5. Alerts Mis behvaing nodes. These are all topics that have been added to bitcoin documentation on bitcoin.org/en/developer-guide#orphan-blocks and are closely related to Stanford lecture for 4 Gen Peer-to-Peer Technology.
In the past several years, the use and prevalence of virtual currency have increased exponentially. The proliferation of digital assets has changed the way goods and services are exchanged and has allowed for faster and cheaper transactions. But with this new technology comes the increased risk of fraudulent activity - especially tax fraud. Recently, the Internal Revenue Service (“IRS”) has made it abundantly clear through guidance, amendments to tax forms, and even warning letters to Americans suspected of tax fraud, that it is getting very serious about virtual currency tax compliance. The IRS and the Department of Justice (the “DOJ”) appear to be poised to commence a flurry of enforcement actions against virtual currency tax fraud offenders. Likely to be entangled in these enforcement actions are virtual currency institutions and companies that regulators suspect facilitated their customers’ tax evasion. It is thus imperative for all entities in the virtual currency industry to ensure their compliance programs are equipped to detect and prevent the facilitation of virtual currency tax fraud.
7:42 Dude says for a collision free hash function H, when H(x) = H(y), x does not equal y. This is false. For a collision free hash function H, when H(x) = H(y), x = y. Also this "collision free" function is called an injective function if you want to learn more about it.
I noticed that too. So I'm assuming he meant to say if H(x) = H(y) and the hash function is collision free, then it's safe to say x = y. Or did I miss understand?
Heeelp! Every time I try to purchase ETH my CC Visa says Cionbase it's a company in Great Britain, and it blocks the purchase. Is coinbase out of GB I thought it was in Ca. Are the Visa bankers trying to discourage folks from buying?
![The moment we stopped understanding AI [AlexNet]](/img/1.gif)
Never knew trade could be so challenging! Kept running back to these RUclips videos to learn more about this your video is indeed helpful. Thanks
.Sadly these are one of the changes in trade profit is not always assured..
@Brandon Hussain .Not everyone has the patience and persistence to grow account. Some may end up blowing up their account.
@George Potter .Demo account are risk free
Trade has left me no choice but to keep investing because it makes so much profit for me.
@@harrychapman3172 .I have been during trade offshore and still in yet to earn my first $100, what strategy do you use please.
Thank you so much for this enlightening video it has helped me greatly. Many a time new comers are indecisive on how to start when it comes to their personal investment growth. But great investors can provide proper guidance...
True< this is a scary time for new investors but the best thing you can do is not to make decisions based on emotions. This could actually be a good time to buy more of your high conviction stocks or crypto on a discount. Wealth is created during bear markets, not bull markets. If your portfolio is really affecting your mental health then delete the app and go for a walk. Let the market do its thing and have a long time horizon. I buy and just trade long term more than ever, I have made over 16` btc from day trading with Mark Maxwell in few weeks this is one of the best medium to backup your assets incase it goes bearish…
My growing love for crypto caused me to explore until I came across Mark Maxwell (although I'm trying to avoid sensationalism) he is by far the best. No hype for hype's sake, but great inspiration to trade crypto.
Wow, you know Maxwell too, he has been helping alot of [people recover their losses from the crash, he's all we need right now. Trading has so much advantages as it is volatile, this is a perfect time to partake in it folks.
I invested with Max also, he understands every beginners intention and fix you to a trading plan that matches your capital.
0:00 intro
1:47 cryptographic hash functions
20:28 hash pointers and data structures
29:23 digital signatures
39:03 public keys as identities
44:32 a simple cryptocurrency
Your speaking is very clear. Great lecture!
Did you ever buy bitcoin?
Fantastic ! This really exceeded my expectations. I'm very glad I signed up for this and I am really looking forward to future lectures. Thanks !
Thank you,
Sir, for the accessible lecture.
These are all entirely new concepts for me. It's difficult to grasp and make notes together at this pace!
Fantastic! I really enjoyed the whole lecture. It was very concise, clear and engaging.
Great! So nice to see some real heavy hitting in this space! Thanks.
$1 *****
I miss the time we could ChangeTip, but I'm sure it will be back again stronger and better.
The average fees for a Bitcoin transaction are over $1 right now because of the inane blocksize debate. It is becoming useless for microtransactions.
Let me hug some coins (っ◔◡◔)っ!
19HKMEVXViRMdMj318x5VqTPzJ1ipEBLSK
ruclips.net/video/fOMVZXLjKYo/видео.html
CRI did
Slide: Commitment API. The line commit(msg) := (H(key|msg), H(key)) probably needs to read commit(msg) := (H(key|msg), key).
Yep, that's a mistake.
Good catch.
can you just briefly explain the difference?
Excellent. GREAT series. So well presented. Much appreciated. Thank you.
Slide Commitment API: What's the purpose of the key? The only thing you publish at beginning is commitment. Message is kept secret until opening envelope. So you can easily do only com=h(msg) and publish com. Nobody can reveal msg from com. Message originator can't forge original message because he can't find msg' with the same hash h(msg)=h(msg'). Everything works without the key as well. All you need is clear hash.
Really amazing lecture.
Thanks for decentralising the knowledge.
a very well delivered and thorough introduction to the foundations of cyber-currencies. Great work!
Hello
whoa super detailed may need to see this a few times
thank you for the course, you're a great teacher and communicator!
Hello sir
Qestions:
14:00: "...returning as commitment: is it "hash(key) + Message" *or* "hash(key+message)"?
14:15: When the key+message was given to the verifier so he could hash it for comparsion?
Great lecture!
At 7 mins 24 seconds, I believe speaker meant: "If hash values are same, then X and Y have to be equal".
Agreed. Adding timestamp link: 7:18
Awesome. builds from ground up and provides great understanding. Thank you.
I love the grounded reality of this channel, its normal to see so many investors panic amid a worsening bearish market but it is also important to note that the market situation is nothing new in the crypto world. Several factors are driving negative sentiment in the stock and crypto markets right now including inflation, a shaky stock market, rising interest rates, and recession fears. As a result, BTC has dropped significantly from its all-time high, breaking below several key technical levels. As a crypto investor, the current situation might seem bleak. However, there are several tried and tested expert suggested investment strategies that can help you accumulate the current crypto storm, in few weeks of implementing trade with accurate signals directly from Theo Ryan, I have been able to accumulate over 19.5 btc despite the current state of the market.
Hello...I have been looking for such a profitable signals and guides from a pro trader for some time now how do i contact him?
@Theo917
That's👆his username / telegram
@@newnew80793 Thanks for sharing his telegram details, this gave me a small amount of hope thanks, i’ll surely reach out to him and start learning the right way, tired of loosing from price drops,
I'm also a subscriber of his signals, and if I were to rate their accuracy I would say 95%
I normally don’t do this, but coming across Theo Ryan in this channel, I just have to say something. He is indeed a tutor, he guided me even when I was being naive to the basics of trading. Thanks to Theo Ryan today I have made reasonable amount of crypto stack up and a good trading capital.
I lost it on the meteor HAHAHAHAHAHAHAHA
A good blog to begin with cryptos and blockchain
i-am-in-crypto.blogspot.com/2020/07/coming-soon.html
13:45 So commit(msg) returns (com, key), where in reality this is equal to (H(key|msg), H(key)). Does this mean that the key which is to be published is actually equal to H(key)? In that case, how could it possibly be that the verification method which uses the published key(aka H(key)) could ever succeed, since it will always be doing: verify(com, H(key), msg):=H(H(key)|msg)==com bearing in mind that com=H(key|msg).
Typing out my questions as I make my way through the video... I'll probably be posting multiple times...
- When discussing the commitment API around the @14:28 mark, why do hash the 256 bit key? H(key)
- Is it because we do "H(key | msg)" and theres some sort of communitive property?
- Is "binding" essentially the same as saying the hash function is collision-free (impossible to find collisions)
appreciable teaching. done a really great job @profs
Excellent lecture covering the key concepts very concisely
Sir will u please post the week 1 assingment answer file
16:08 "Let me just go through it "Bit-by-bit"" lol
Excellent! thank you very much for sharing your knowledge
More Qeustions:
@23:48
- How is the data from in a tamper-evident log stored? In a key value store? Since you are not using pointers to memory you need an auxilary store right?
- Does the prev H(arrow) include the prev pointer AND the data or just the data? It would make more sense to include both right?
Very beautifully explained, thanks!
what exactly is the commitment API ? is this kind of api an application programming interface ?
I can recommend Mr William charle he is a good broker and also expert in crypto currency he can help you get More informations and knowledge about Bitcoin
He's available on what's app
*+1 8 1 8 7 2 2 9 1 4 5*
Arrow pointers under heading of 'Blockchain' and 'Detecting Tempering' should point to previous/parent block H( ). It correctly mentions previous H( ) though arrow pointer shows next H( ). Both Bitcoin and Ethereum Block Header stores parent H( ) which is previous H( ). Please correct this.
Great intro to bitcoin. Thank you for posting this.
This was a Master Class! Thanks, From Eric Croom Jr,
This is where 99% of the people in this world don't understand how bitcoin actually works. They only know the bitcoin price news....
789overdrive And it's those people that will ruin bitcoin's potential future and just turn it into another financial bubble.
What is the point of Powerpoint if you just put the words you are speaking into it?
thank you. Excellent start!
Amazing Lecture prof!
Ah, this is like being back in Uni. Reminds me of my Computer Engineering and Electronics days.
I have a thought about the identity in Privacy. When analyzing the behavior of an address to find out who that is, isn't it a good idea to use Machine Learning to run through the layers and to update the output over time? The activity of the address can be the input layer, the probability that that is Joe would be the output layer.
Great Lecture!
THANK SIR, GOD BLESS AMERICA AND GREECE-ROMAN.
Good stuff, much appreciated!
22:27 why we are not calling it next pointer instead of prev??
I would like feedback on this concept
Imagine a hash being generated by number string occurring only once in space+time would that not eliminate any "collisions?"
Please, I want solution of exercises to chapter 1
What's the difference between the commitment and signature API's?
Thank you for providing the world with this infinitely valuable and accessible resource! 100000 satoshis *****
If last block data is tempered, how will it hamper the previous blocks?
34:43 Where exactly you draw the line that separates plausible numbers and non-plausible numbers?
Great lecture!
Excellent lecture. Very very good stuff
For cryptocurrency mining and how to make good wages on your invested funds contact me (isaacken70@gmail.com ) and I'll show you how i made over $500k in 3 months and the secrets behind it.
Can anyone answer what software I would use to calculate these commands? Com, key, msg, etc? How can I implement what I am learning in this video?
He looks like Tim Cook.
On a bad day
@24min: re tampering: i undertand that tampering is not possible in th middle of the block chain but what if the tampering occurs at the very end of the chain (at the most recent "link").
would that not be possible?
great lecture very well explained thanks.....
Can I get slides of lecture , please?
at 7:16 he says "that if we know X and Y have the same hash, then it's safe to assume that X and Y are different"
Did he mean to say that they are the same?
The formula above shows "If we know H(x)=H(y), it's safe to assume that x=y"
yeah he meant that they are the same.
yes H(x)=H(y) it is safe to assume x=y but it is rare situations where H(x)=H(Y) where x!=y it means it is difficult to find where Hash values are same with different X and Y. I think this is the concept he explained. If I make any mistake please correct me .
Time for a 4th rewatch?
Yes.
This is actually a bitcoin course that I can understand. I'm waiting for episode 2, when will it be uploaded?
"Earth will be destroyed by giant meteor in next 2 seconds which... did not happen" :D great lecture
Is signature the way to prove , that someone is holding certain private key? Other words do we have another API for signature saying: isTheSameSK(pk,sig1,sig2)? This is like asking: is sig1 and sig2 made by the same person ? Or i can send a msg2 to this person and ask to sign it and later verify he also signed msg1?
anyone knows: are all coins are immutable? thanks!
at 23:10 are the blocks going from left to right or right to left ?
Thank you so much for doing these.
Ummmm, cryptographic vegetables, tasty :D
Are these lectures the same ones being used for Coursera's Cryptocurrency course? I'd just sign up for the course but I hear the assignments on this specific course are pretty frustrating.
Are these videos available somewhere for legal download or are they only on youTube?
BRILLIANT
Ho boy that's how you know they're real academics ... 3 minutes in and it's an college senior-level algorithms lecture
I heard that educational token(LEDU coin) is currently paying project creators for their work, any thought on it
Does anyone have answers to the quiz of this course ?
Great work .Would like to request Blockchain sync that covers and the technical background for Peer to peer network. Covering Topics like
1. Bitcoin Peer Discovery 2. Inital Block Download 3. HeaderFirst Block Downloads. 4. Orphan Blocks and 5. Alerts Mis behvaing nodes. These are all topics that have been added to bitcoin documentation on bitcoin.org/en/developer-guide#orphan-blocks and are closely related to Stanford lecture for 4 Gen Peer-to-Peer Technology.
Why complaints? this is "intro" yes
Thanks for sharing!
Love it!!!! nice explanations
HEllo, would it be possible to have the slides of this course?
Hello Sir
perfect
"relies on hairy math" best quote
Where can we get the lecture PPT?
How rich would Satoshi be,if he mined 90% of the Bitcoin supply?
2:47
I want to learn it
Nice ! Thanks
34:31
Illustrations are too abstract and lack practical examples or meaningful analogies. Stopped at 27:30.
In the past several years, the use and prevalence of virtual currency have increased exponentially. The proliferation of digital assets has changed the way goods and services are exchanged and has allowed for faster and cheaper transactions. But with this new technology comes the increased risk of fraudulent activity - especially tax fraud. Recently, the Internal Revenue Service (“IRS”) has made it abundantly clear through guidance, amendments to tax forms, and even warning letters to Americans suspected of tax fraud, that it is getting very serious about virtual currency tax compliance.
The IRS and the Department of Justice (the “DOJ”) appear to be poised to commence a flurry of enforcement actions against virtual currency tax fraud offenders. Likely to be entangled in these enforcement actions are virtual currency institutions and companies that regulators suspect facilitated their customers’ tax evasion. It is thus imperative for all entities in the virtual currency industry to ensure their compliance programs are equipped to detect and prevent the facilitation of virtual currency tax fraud.
Thank you
So... invest in GoofyCoin?
very good
A course for gentlemen
Tammm
7:42 Dude says for a collision free hash function H, when H(x) = H(y), x does not equal y. This is false. For a collision free hash function H, when H(x) = H(y), x = y. Also this "collision free" function is called an injective function if you want to learn more about it.
Thats bijection not injection
I noticed that too. So I'm assuming he meant to say if H(x) = H(y) and the hash function is collision free, then it's safe to say x = y. Or did I miss understand?
0:51
Surprised Disney has not requested a take-down of this video.
What's the song used in these videos?
Yes whats the music! Great, great lectures. Thanks!
36:28
Heeelp! Every time I try to purchase ETH my CC Visa says Cionbase it's a company in Great Britain, and it blocks the purchase. Is coinbase out of GB I thought it was in Ca. Are the Visa bankers trying to discourage folks from buying?
Am the one who Broke the code .
And launch it towards Japan 1991! Dark net!.
l