Siraj, how do you learn so much? I've seen that you know a lot in science and tech and have you good understanding of its philosophy. Do you learn everything from articles and blog posts?
Read into the concept of light nodes. Merkel trees solve this exact problem by hashing previous transactions so not every transaction is executed. Ideally you should have the whole Blockchain including the genesis block but it is def not a requirement ( correct me if I am wrong here )
Siraj, ain't it kinda ironic that on one side with block chain the need for trust is eliminated but still, the organisation that runs any type of Blockchain network needs to be trusted again?! The same counts for the good old internet network and the corresponding ISPs. So the need of trust is not eliminated but only shifted and the additional outcome is transparancy, right?
These are great! Keep all the decentralized content coming! All the ethereum stuff you are putting out is perfect to get up to speed. I'd love to see thoughts on some of the private chains such as Multi-chain
sir i want to read large csv file in pandas but my laptop memory is 4GB only. i read csv file using chunksize=100000 but when i want to update or manipulate the data i was unable to do so. i want to apply changes on entire data. how can i please help.
Hey sir. I just discovered your channel. I really like your informative contents and enthusiasm. My only suggestion is to include the links to your previous videos on this topic so that beginners who are interested know where to start.
How would an Ethereum contract verify the outcome that was previously agreed upon? For example if you bought life insurance then faked your death - it seems that would need a third party to confirm that you died. Maybe you can decide who can confirm prior. You could have companies that specifically do confirmations.
The point of smart contracts is you have something easily verifiable that is difficult to counterfeit. If you run a webshop using smart contracts, the shop owner can prove he didn't get paid, or the customer can prove he did pay. It's still up to the shop owner to package and send the bought goods, and it's still up to the customer to verify they got what they paid for. Smart contracts aren't magic that can verify real-world situations like that. But they're an improvements to "dumb" contracts and agreements because they're cryptographically verifiable and computational bits can be automated such that terms are always enforced. If your webshop is selling something immaterial, like say access to a song, that part can be automated in the contract too. If you pay according to the contract, you get access to the song. If a contract includes provisions for refunds, you can invoke that and be refunded automatically according to the terms of that contract. You could make an electronic voting system where citizens can verify that their vote was counted. It doesn't prevent people from selling their votes, or losing their authentication credentials, but it does prevent some types of voter fraud and miscounts and provides a cryptographic way to ensure your vote wasn't ignored. If the ownership of a car is encoded in a smart contract, you can ensure that only the current owner can transfer ownership to a new owner, and the document can never be falsified or changed without access to the authentication credentials of the current owner. You can still steal the car and sell the parts, but to falsify ownership of the car you'd have to change the vehicle identification number and create new false documents. If your new false documents are also encoded in a smart contract, it's obvious that they're newer than the car and fake. So if you buy a car with a smart contract and the vehicle identification number matches the smart contract and the government records, you can be sure it isn't stolen unless the thief can break the cryptography of the blockchain or hack the government records. Probably the latter is more likely, so perhaps governments should put such records on the blockchain too.
Think about how it would work in the traditional system. A mortician or other professional writes a death certificate. It is brought before a judge and the judge allows the family members to access funds through his own authorization trusted by banks. So in the blockchain space, I see the best solution to this thus far is: A dead man's switch, and a signed transaction by a mortician. Unfortunately, society is all backwards, and we don't have people of authority (such as police officers and morticians) using cryptography. So maybe the best thing right now is only a dead man's switch. (Unless you had a trusted source like a newspaper that published death notices in a JSON-readable format.) Unfortunately you can't tell a police officer: "STOP! I don't believe you're actually a cop! You could just be someone dressed up in a cop uniform, like Halloween or something! Send me cryptographic authentication that you are who you say you are!" They expect blind trust and obedience and depend on punishing fake cop lookalikes except on Halloween...
So, the key takeway is that when using a blockchain: 1) Instead of data being held by servers operated by a few companies, data is held by servers operated by individuals...? 2) The immutable nature of the blockchain facilitates this. Because the content/record can't easily be changed, the credibility of whoever is running a server doesn't matter... 3) The "anonymous" nature of the information stored in a block also facilitates this? I.e. users don't mind info in public record as long as doesn't personally identify them... I question the "anonymity" part. For example in the rent example in the video, what stops someone identifying your transactions... Ex suppose your neighbor knows you moved in on a specific date, can't they just look at the public blockchain and see which wallet made rent payments + deposit around that time (correlation attack)? (Or even the landlord). And if you use the same wallet for other transactions, won't they be able to know exactly what goods and services you purchased/used... And given that the blockchain is online, can't someone on the other side of the planet just track a wallet's activities and get a pretty good understanding of the owner... Would you now be advised to use different wallets for different things (ex healthcare vs Ebay purchase) to avoid this correlation?
Yvan: The correct time to feel threatened would have been when it was being developed. It's already out there and being used, it's too late for those in power to do anything but adapt.
Hey Blockchain-Enthusiasts Can someone help with the following questions: 1. Why do I have to transfer my whole UTXO in the Bitcoin Blockchain, what was the intention behind? 2. In the Bitcoin Blockchain; is the timestamp in the blockheader hashed, or is the hash of the blockheader timestamped and subsequently indeirectly included in the previous hash of the next block? 3. In Ethereum, does the EVM updating the storage of each account and thus changing the storage root of each account??
What would you use a quantum computer for? Raining of blockchain supporter's parade - or to mine with and make mega-bank? There's a strong financial inventive to mine instead of just cause havoc.
To be honest, while I find the idea of distributed computing to be the future of computing, I'm sick and tired of the whole mining and crypto currency hype and third party scammers. I'm also not willing to give up for free tens of gigs of HD space, bandwidth and electricity right now. When I have free internet, free electricity and very cheap and durable storage devices I might get into this and have a computer only for that, disconnected from everything else in my house.
siraj, here is an advice. focus on quality, not quantity. You may be spitting videos often, but the content is bad. You give the impression that you dont know stuff because you cant properly explain them, in a clear and structured way. Also, if you want to be taken more seriously, you should reduce the amount of these stupid memes. (edit: typo)
@Siraj, I am greatly inspired by your videos, recently the clarity in your explanation is slightly going down. I hope you will take my comment as a constructive feedback and will come with better explanations. I feel like you are just putting more things(like revising the things for yourself), please make sure you also double check that any point you are telling will be understood by others that does not have much of the context you already know.
So I wonder whos sponsoring Siraj to shill blockchains? I mean similar to Googles products he shilled early this year...its very clear that he has to make money somehow if this is all he does.
Siraj Raval well I appreciate the candid reply at the very least. But what are your motives? Forgive me but it’s hard to learn information from a source without applying bias first.
Dude, you are throwing in too many unknown parameters in your video. It makes you sound smart of course, but the value of this video is questionable.
Am I the only one, who understood nothing from Siraj's videos and still watching his videos?
ill get more beginner soon
This is probably a terrible way to invest.
I am not sure that even him understands that deep, you still watching him because he works like a brainstorming.
yeah, that's what I hope. That's the reason why I still watches.
Dr Jada yes
Can anyone tell me what is he using on 2:09?
Love how you explain blockchain technology; it's such an important topic.
will this save web development?
Siraj, what do you think about hashgraph? Are you planning to make a video about it too?
I love your videos Siraj, keep up the great work and good luck with getting that Elon Musk interview. :)
thank you! if it works ill be happy. if not, its ok as well :)
LOL
Driftwood Gaming sfhdbnlhikjyfjfg
What are some good conferences on AI and blockchain you guys recommend?
Siraj did you consider looking into EOS and their smart contract capabilities?
Siraj, how do you learn so much? I've seen that you know a lot in science and tech and have you good understanding of its philosophy. Do you learn everything from articles and blog posts?
yes articles and blog posts and videos
Siraj Raval noice. That's pretty respectable.
icommand that seems nice. How do get so much time? College takes so much of my time.
It was an amazing smart contract explanation.
thanks!
If every node on the network needs to own a copy of the blockchain, won't the size of the blockchain eventually become an issue?
Only if the growth of the blockchain outpaces the largest storage available. (And even then there's RAID...)
Read into the concept of light nodes. Merkel trees solve this exact problem by hashing previous transactions so not every transaction is executed.
Ideally you should have the whole Blockchain including the genesis block but it is def not a requirement ( correct me if I am wrong here )
Siraj, how many years away are we from wider adoption of blockchain technology?
Status of my body parts:
*Eyes:* Running
*Ears:* Running
*Br...* oh no, an error occurred - brain.exe has stopped working!
My Body: brain.exe? Must be running under Wine or something? *the rest of the system continues to function normally*
needs dopamine.dll file
ok you can't just start singing a dank song and then leave us hanging, man! Also, fascinating video as always!
thanks!
Siraj, ain't it kinda ironic that on one side with block chain the need for trust is eliminated but still, the organisation that runs any type of Blockchain network needs to be trusted again?! The same counts for the good old internet network and the corresponding ISPs.
So the need of trust is not eliminated but only shifted and the additional outcome is transparancy, right?
Eth price is $13 at 1:02 :D :D
These are great! Keep all the decentralized content coming! All the ethereum stuff you are putting out is perfect to get up to speed. I'd love to see thoughts on some of the private chains such as Multi-chain
thanks pat! i'd absolutely love to talk about sidechains, lets see if i can fit it in before my next AI course starts
You're a genius dude
sir i want to read large csv file in pandas but my laptop memory is 4GB only.
i read csv file using chunksize=100000 but when i want to update or manipulate the data i was unable to do so. i want to apply changes on entire data. how can i please help.
Can't find Bitnet's Homepage or something similar
Now it's about crypto currency huh ? Great Siraj , you are moving with the latest stuff and helping us move with you . Thanks !
Watch your videos every day! :D
You are the best! Thank you!
Your intelligence and speaking style reminds me of the late Nabeel Qureshi. You speak on completely different matters, but, still.
Could you talk about hyperledger?
Hey Siraj can you have Live Stream sessions for Dapps development? Thanks
Hey sir. I just discovered your channel. I really like your informative contents and enthusiasm. My only suggestion is to include the links to your previous videos on this topic so that beginners who are interested know where to start.
Nice Explanation Siraj. Thank you.
sha256 returns a 256 bit length hash, but bytes32 only stores 128 bit length hash (32 * 4)
You gained 19k subscribers this month, good job famalam
thanks bruh
Hey siraj can you please make video on proof of stake
There is no "balance" in the btc ledger. There are only references to the transactions.
How would an Ethereum contract verify the outcome that was previously agreed upon? For example if you bought life insurance then faked your death - it seems that would need a third party to confirm that you died.
Maybe you can decide who can confirm prior. You could have companies that specifically do confirmations.
The point of smart contracts is you have something easily verifiable that is difficult to counterfeit.
If you run a webshop using smart contracts, the shop owner can prove he didn't get paid, or the customer can prove he did pay. It's still up to the shop owner to package and send the bought goods, and it's still up to the customer to verify they got what they paid for. Smart contracts aren't magic that can verify real-world situations like that. But they're an improvements to "dumb" contracts and agreements because they're cryptographically verifiable and computational bits can be automated such that terms are always enforced. If your webshop is selling something immaterial, like say access to a song, that part can be automated in the contract too. If you pay according to the contract, you get access to the song. If a contract includes provisions for refunds, you can invoke that and be refunded automatically according to the terms of that contract.
You could make an electronic voting system where citizens can verify that their vote was counted. It doesn't prevent people from selling their votes, or losing their authentication credentials, but it does prevent some types of voter fraud and miscounts and provides a cryptographic way to ensure your vote wasn't ignored.
If the ownership of a car is encoded in a smart contract, you can ensure that only the current owner can transfer ownership to a new owner, and the document can never be falsified or changed without access to the authentication credentials of the current owner. You can still steal the car and sell the parts, but to falsify ownership of the car you'd have to change the vehicle identification number and create new false documents. If your new false documents are also encoded in a smart contract, it's obvious that they're newer than the car and fake. So if you buy a car with a smart contract and the vehicle identification number matches the smart contract and the government records, you can be sure it isn't stolen unless the thief can break the cryptography of the blockchain or hack the government records. Probably the latter is more likely, so perhaps governments should put such records on the blockchain too.
Think about how it would work in the traditional system. A mortician or other professional writes a death certificate. It is brought before a judge and the judge allows the family members to access funds through his own authorization trusted by banks.
So in the blockchain space, I see the best solution to this thus far is: A dead man's switch, and a signed transaction by a mortician. Unfortunately, society is all backwards, and we don't have people of authority (such as police officers and morticians) using cryptography. So maybe the best thing right now is only a dead man's switch. (Unless you had a trusted source like a newspaper that published death notices in a JSON-readable format.)
Unfortunately you can't tell a police officer: "STOP! I don't believe you're actually a cop! You could just be someone dressed up in a cop uniform, like Halloween or something! Send me cryptographic authentication that you are who you say you are!" They expect blind trust and obedience and depend on punishing fake cop lookalikes except on Halloween...
IS this a sign i'm getting close, Error: encountered, bailing. Network state unknown. Review successful transactions manually.
you are a titan
Hi siraj. Thanks for nice video and also a great diwali
So, the key takeway is that when using a blockchain:
1) Instead of data being held by servers operated by a few companies, data is held by servers operated by individuals...?
2) The immutable nature of the blockchain facilitates this. Because the content/record can't easily be changed, the credibility of whoever is running a server doesn't matter...
3) The "anonymous" nature of the information stored in a block also facilitates this? I.e. users don't mind info in public record as long as doesn't personally identify them...
I question the "anonymity" part. For example in the rent example in the video, what stops someone identifying your transactions... Ex suppose your neighbor knows you moved in on a specific date, can't they just look at the public blockchain and see which wallet made rent payments + deposit around that time (correlation attack)? (Or even the landlord). And if you use the same wallet for other transactions, won't they be able to know exactly what goods and services you purchased/used... And given that the blockchain is online, can't someone on the other side of the planet just track a wallet's activities and get a pretty good understanding of the owner... Would you now be advised to use different wallets for different things (ex healthcare vs Ebay purchase) to avoid this correlation?
to be honest: if i was a government i would feel threatened by this technology. the seat of power is not easily vacated.
Yvan: The correct time to feel threatened would have been when it was being developed. It's already out there and being used, it's too late for those in power to do anything but adapt.
They will own the oracles (or the oracle's data actually).
its true
Hey Blockchain-Enthusiasts
Can someone help with the following questions:
1. Why do I have to transfer my whole UTXO in the Bitcoin Blockchain, what was the intention behind?
2. In the Bitcoin Blockchain; is the timestamp in the blockheader hashed, or is the hash of the blockheader timestamped and subsequently indeirectly included in the previous hash of the next block?
3. In Ethereum, does the EVM updating the storage of each account and thus changing the storage root of each account??
Nice video again
Siraj, great video! make an ICO fast before the bubble bursts
btc @ 6025 usd...
I love you siraj
love you too
hi siraj... can you start a deep learning channel where you teach DL in hindi
I really like your videos.
Lol, thought Bitcoin was hard to wrap my mind around, then this! Sounds like a video game...
Can someone answer if quantum computers are threat to blockchains because it provides user with insane computing power?
What would you use a quantum computer for? Raining of blockchain supporter's parade - or to mine with and make mega-bank? There's a strong financial inventive to mine instead of just cause havoc.
Make episode about Lisk it is surprisingly promising technology !!
I've got to say that I understand about 10% of this video. How about you guys?
Same Here..
To be honest, while I find the idea of distributed computing to be the future of computing, I'm sick and tired of the whole mining and crypto currency hype and third party scammers. I'm also not willing to give up for free tens of gigs of HD space, bandwidth and electricity right now. When I have free internet, free electricity and very cheap and durable storage devices I might get into this and have a computer only for that, disconnected from everything else in my house.
siraj, here is an advice. focus on quality, not quantity. You may be spitting videos often, but the content is bad. You give the impression that you dont know stuff because you cant properly explain them, in a clear and structured way. Also, if you want to be taken more seriously, you should reduce the amount of these stupid memes.
(edit: typo)
@Siraj, I am greatly inspired by your videos, recently the clarity in your explanation is slightly going down. I hope you will take my comment as a constructive feedback and will come with better explanations. I feel like you are just putting more things(like revising the things for yourself), please make sure you also double check that any point you are telling will be understood by others that does not have much of the context you already know.
will improve thanks
Bio metrics to authenticate users without server?
Dude make a tutorial for that please, very curious to see lol
I feel like you have a lot of investments on Ethereum :) @Siraj Raval
surprisingly i dont
Cool!!!
I understood his video just because I referred other resources. So it is not recommended for people who dont know basics of Ethereum
NOTIFICATION SQUAAAAAAAAAAAAAD!
squad!
Ether at $17 like 2 months ago?! God damn...it's like over $700 now (December 17th, 2017).
soooo, who thinks that ether is a good investment right now, compared to other altcoins?
Siraj!! Do not move to crypto world. We want you to do more videos on AI
contact me if you want to invest on block chain via email pricecollins7@gmail.com
Wish I saw this when ethereum was 13 dollars lol.
Hey siraj, why you are not focusing on DL and AI? Please dont move away from it completely
+Nishanth G give me a week
Siraj Raval You're awesome
My head feels bigger now, for some reason...
So I wonder whos sponsoring Siraj to shill blockchains? I mean similar to Googles products he shilled early this year...its very clear that he has to make money somehow if this is all he does.
Patrick Hastings patreon
patreon + ads + udacity. no one tells me what to create
Siraj Raval well I appreciate the candid reply at the very least. But what are your motives? Forgive me but it’s hard to learn information from a source without applying bias first.
motive: solve intelligence by inspiring and educating devs. blockchains are a piece of the puzzle
Your videos are usually great but when you try to make them "funny" really distracts me
i bet these videos are really good if i could understand anything. smh.
fark me, even installing all the shit is a pain in the arse.
too fast
WOW you breathe so loudly.
Are you an INDIAN
DOGE CRYPTOCOIN BRING ME