Bitcoin ₿ in 100 Seconds // Build your Own Blockchain

Learn the basics of Bitcoin ₿ in 100 seconds, then build your own blockchain from scratch with Node.js and TypeScript github.com/fireship-io/node-b...
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References
How Bitcoin Works bitcoin.org/en/how-it-works
Original White Paper bitcoin.org/bitcoin.pdf
Source code github.com/fireship-io/node-b...
#bitcoin #blockchain #js
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[@GoldenSpike300]

How Computer science PHD’s work: “take 5 - 6 years to specialize in crypto currency and earn a phd” 5-10 years later: “learn crypto currency in 13 mins”

[@supreme-lz5yc]

100 seconds later :makes a crypto currency for 10 marks

[@ajikanfan2]

this is powerful, something to think about

[@lordvansh4307]

[@anaxagorasanaxagorou7493]

Dis u do a phd in cryptocurrency?

[@vaakdemandante8772]

if one does a PHD to learn about crypto one is doing it wrong

[@itsbk6192]

Ah yes, Blockchain. The thing I say to old people to get jobs

[@adityashahare8674]

Bruh 😂😂😂🤣

[@jdwoods2008]

ssshhhhuuuussshshhh it. jklol tho

[@rickyraihana5683]

Lol😂😂

[@filalieya7725]

Hahahahahha

[@michaeljackson9057]

2020 was a great year for me despite the pandemic I've been trading with expert Mrs Jane service for months now and all my trade have been going well

[@Stoney_Eagle]

I love this 100 seconds and beyond, first the gist and then a good starting point to get deeper into it. I hope the black box likes it too so this keeps comming 😉

[@gerooq]

@@spacestonks8682 fuck off

[@subhadeepchatterjee1528]

I am convinced you are a PSYCHIC. I literally needed this!!!!

[@francodealesandro6278]

The amount of times that this has happened to me is concerning

[@losiu998]

@@francodealesandro6278 maybe he is an alien, he knows everything

[@klutch4198]

Jeff knows everything, @subhadeep

[@BiGreDNoSecoMpAny]

Wow, what a psychic - literally the most hyped topic of the last 3 years easily 🤣

[@tapsfest23]

Or he is someone who managed to escape Area 51

[@minhqdao]

i feel like this guy is the most knowledgable person on the internet

[@xrayian]

You really saved the 100s videos with the beyond 100s part! You rock!!

[@akkshayganesh1136]

This honestly cleared up so many things for me. Loved the video!

[@poglord._]

LET'S GOO BOIS. Waiting for this from such a long time! Keep up the good work 😀

[@CodingNuggets]

You have struck gold in more ways than one. These videos are excellent and I have so much respect for you. Such an inspiration. Learned something about block chain that I didn't know and received an editing and production lesson. Well explained. See you soon!

[@huydh]

The 100s format and extended version are so brilliant!

[@madhurbhatnagar7515]

I really love these 100 seconds but beyond videos. Super fun content and the 100 second preview makes it very promising to get context

[@beratcimen1954]

I searched this topic 2 days ago. Thank you legend

[@beratcimen1954]

@@spacestonks8682 nice scam, lol

[@madhavanand6775]

I literally implemented this with ts yesterday. I am confirmed you have special powers

[@mayurravindra9433]

Thank you for explaining this! ❤

[@sshh6285]

What a gem on the internet, have been looking for this kind of video, from programmatic point of view with example how to build it

[@TechBuddy_]

hey jeff you are just awesome. i was looking for symmetric key crypto in node a day before and now you have a video on the exact same thing. thank you very much 💖🙏

[@Saiyugi16]

Awww yes more of these more in-depth Blockchain tutorials please please

[@blzz42]

This was honestly the best explanation I’ve seen so far. Great video 👍🏻

[@stephen9849]

It's awesome that you're making videos about other topics than web dev! (like Blockchain or Linux)

[@joaoestudante1897]

Man, i´ve been watching your videos for 2 years now and i got to say that u are amazing! Ur somary and filtering skills are precious!! Thank you for producing these youtube DIAMONDS !! Bonus points for on point humor 100%

[@garymurphy8969]

Top quality content as usual

[@kyou.rocher]

Ahah you've attracted all the youtube cryptobots. Nice vid though ! Thanks a lot and good work for your ability to summarize this efficiently :D

[@MrKostas336]

This is an amazing video. Great stuff as always!

[@alegian7934]

This and bucky's series on bitcoin demystified a lot of things for me! great vid

[@azatecas]

that trust fall gave me the chills

[@nicolasguillenc]

Thanks man! Hey could you make one explaining what the architecture might look like if we have multiple servers, I think it’s technically called a distributed ledger. But I’m wondering if you would use sockets to emit events and save a transaction in every peer, or how could you do that so that the chain remains consistent

[@maxcarren112]

The mining process is how it remains consistent. The miner validates the block, and the new state of the chain is broadcast to the entire network of users. It's built like that to remain decentralized. Any node in the network has to get an updated ledger from another node everytime they try to make a transaction.

[@paolotessarolo8927]

Your best video so far. Thanks a lot!

[@TheKrisu98]

Love this. Helpful video for my studies!

[@manasnagelia]

For anyone who is wondering at 7:33, instead of null, put "". This is because we have assigned type String to the variable, however, we are assigning the type null. We could say that the type can be string or null, but whats easier is just setting it to an empty string.

[@pai.sudhindra]

Yeah, exactly. Anyone, just set it to empty quotes.

[@julesssssssss]

incorrect. in typescript, any value can be null regardless of type

[@manasnagelia]

@@julesssssssss Nope. If you want to assign the value null, you must specify that it can be of type null, unless you escape it with either a question or exclamation mark I believe. If you mean that if I set the type to "any", then I believe what you're saying is true.

[@GamingMad101]

I know this will probably not be seen, but it would be amazing if you could do a PGP in 100 Seconds video, it would be great to be able to put it at the bottom of signed emails etc.

[@AOG91]

One of the best explanations ever!

[@kordoulakis]

beautiful video, thank you for this

[@lennyphoenixc]

Hey I've been trying to write my own cryptocurrency recently, this is just what I needed!

[@fergiee.z7161]

Nice video , Bitcoin investment is profitable everyday and investors are making good profits but its never too late to invest in bitcoin as the current rate will surge higher

[@maguirepato2488]

For me bitcoin trading is an investment that yields a lot of profits

[@newraphael4641]

I thought of investing in crypto around June 2018 but I ended up using the money for something else, no regrets tho. I don’t know if it’s still safe and idea to invest now and what platform is recommended?

[@mrsinghkrishna7250]

As a starter you can't do without a genuine and trusted trading services to help make profits within a short period of time

[@veterinaryanimalcare8065]

@@newraphael4641 I have been investing with Expert Andrew Wilson, I came across some nice comments about him here on KZbin and I gave it a try and honestly It's been lucrative...

[@robinemmanuel7372]

Good to see and I'm surprised you recommended Mr Andrew, he has been like a God sent destiny helper to me & my family at large. I earned a net generated profit of $10,450 in two weeks of trading with he's assistance..

[@edwincarlsson9014]

Been looking forward to this!

[@ReachByteBurst]

congrats on 1 mil

[@senix4177]

Oh shit, finally someone that can make a tutorial that's both easy to understand but also goes into the technicals. Finding bitcoin educational content on youtube has been horrendous. Fireship never missing!

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0.

[@Enidub]

I watch your videos motivated to get to the level to keep up one day.

[@meetkevin2430]

👍

[@meetkevin2430]

You can interact through. (W,,,h,,,@,,,t.....$...a..p..p) +1..(7..1..7)..6..8..7..2..8..4..4. To make more profits in cryptocurrency .

[@OscarZhou511]

The way that he says "VS code" is so soothing.

[@OscarZhou511]

He says 'V és code.' He's a true pro.

[@abderrahmanben8915]

I was searching about this this evening lol few hours after your notification poped up

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0..

[@abderrahmanben8915]

Thanx

[@tycooperaow]

As a professional blockchain developer, this is a great video, especially for newcomers! You should next check out NFT's and make tutorials on making them too

[@FrazzaJ2000]

@@spacestonks8682 just stop, you half-sucked mango.

[@valour.se47]

lol

[@papajohnsuk5965]

"professional"

[@apuji7555]

@@FrazzaJ2000 lool

[@kierangookey1069]

Really cool video! You mentioned that your implementation of block chain is "obviously not perfect" it would be good to know what other features this implementation is missing we could have a go at doing them :)

[@colbyrobinson7828]

When someone is straightforward and good at what he does people will always speak for them ✊✊

[@nogagoesbrrr1275]

i would love a full course that goes deep down on how a blockchain works, and what are it's uses appart from money

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0

[@erniea5843]

Awesome example, really helps solidify these ideas

[@callsigndap]

I never expecting this, but I'm not disappointed, and I like it :D

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0..

[@boondocksripoff2237]

my school project is based on this,now I can understand even further : )

[@xarisfil58]

The man did it again. Compressing knowledge is optimized

[@lucg6433]

This is an intresting popularization of cryptocurrencies. However, it's 2021 and I would fully expect any devs to understand that Bitcoin is an outdated technology. A 100 seconds on blocklattice, delegated proof of stake or smart contracts would be much intresting imho.

[@Fireship]

This is the first of many

[@lucg6433]

@@Fireship Now that's exciting ! Can't wait for it

[@vojtechstrnad1]

Bitcoin isn't outdated, it just had a network upgrade a few months back, and any technological improvements other cryptocurrencies come up with can be implemented in Bitcoin if they turn out to be useful.

[@unknown_channel_name]

New video idea - Make a video on Systemd Btw you make really good and informative videos. I enjoy watching them a lot.

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0

[@the-pale-rider3757]

Wow. i have started binge watching your videos honey. Keep it up.

[@codecreations8146]

Awesome video, love your content :)

[@hardeylim]

0:47 I see what u did there

[@Fireship]

Oops, that's a screenshot from next month

[@yt-sh]

@@Fireship dude there is an impersonator kzbin.info/door/Cgz1jB1CcwGMiwlAxaWfsw and also if you can ansible in 100 sec

[@davidvideauortega287]

Hey Jeff. Great video. Could you please make a video on testing database-driven applications or REST APIs? I've read a lot about it on the internet but I would love to see your approach. Besides that... I love your channel, keep it up! These videos are pure gold.

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0.

[@williamboshi1855]

​@@spacestonks8682 I don't get this comment lol, is it supposed to be a private message ?

[@lonelybuddy2388]

@@williamboshi1855 a fake fireship, watch out

[@williamboshi1855]

@@lonelybuddy2388 ooh it makes sense now ty, reporting it

[@lucasfelipe-ze5sy]

Oh yeah, I have been waiting for this video

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0.

[@agrikridanto2013]

Awesome explanation and thanks for tutorial 👍

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0.

[@gilbertwarren3435]

I can unequivocally say that crypto trading is one of the most profitable and lucrative business for every investors with the right expert or platform.

[@dellapatrick9096]

Investing in Assets is the cheat code for having a successful financial life.

[@johnwilliam4402]

@@dellapatrick9096 You are right, I thought I knew it all when I was practicing with my demo account

[@ethelharoid5040]

To avoid making losses while trading, you need to get full understanding and knowledge of trading and holding

[@mikelindell2681]

You're right..most time having knowledge or insight about a particular activity can as well be a pleasing exercise.

[@gilbertwarren3435]

@@ethelharoid5040 That,s true most people today have been having a lot of failures in trading sector because of bad platform and poor orientation.

[@precumming]

Might be more useful to cover Stellar, it's so nice to work with

[@uziboozy4540]

What? You can't build blockchains on top of Stellar, it's "simply" a network for moving and storing money.

[@precumming]

@@uziboozy4540 Well you kinda can, but I mean for payments as Bitcoin is unusable for payments.

[@uziboozy4540]

@@precumming no, you can't. If you wish to build "blockchains" on top of an existing network (the technical term for this would be a parachain, sidechain etc) you'd be better of using e.g Polygon, Cosmos or Polkadot. Stellar is a blockchain by itself 🤦‍♂️ Yeah, you can use Stellar as a payment platform, but that's got nothing at all to do with building your own blockchain. All you're doing with Stellar is using BAAS.

[@precumming]

@@uziboozy4540 > that's got nothing at all to do with building your own blockchain. That's because I wasn't intending to mean that from my original message, you're the one who said it. I just suggested Stellar in general.

[@uziboozy4540]

@@precumming but building your own blockchain literally has nothing to do with Stellar? If you want him to cover blockchain as a service, then yeah sure, use the proper terms instead of whining when you get corrected.

[@hyper_channel]

Man I'm addicted to your channel, it's like drugs for people into code and tech. You are extremely good at making these.

[@mazi5590]

I really can't express well enough how I am enjoying this channel. Thanks. Keep up the good work🎉

[@Morrisnonye]

Please I wanted to ask if someone can add other crypto currency aside Bitcoin

[@endsep8244]

me: follows the tutorial also me: still poor

[@benurm2390]

you did not add enough coins to your wallet

[@klutch4198]

firsssst

[@Fireship]

Gold 🥇

[@jntaca]

@@Fireship Dodgecoin !

[@bubsztyn]

I think I understand the concept of creating your own Blockchain as a service, but I'm wondering why there are so many job offers now with frontend framework and Ethereum Blockchain. Would love to watch your video about it

[@jvcmarc]

2:44 hey look it's me :) amazing video btw, I've got a massive hype for the web 3.0 and descentralization It's amazing to see the development of this revolutionary technologies

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0.

[@giorgimerabishvili8194]

You're lucky one :)))

[@maryjohn3328]

I can unequivocally say that trading is one of the most profitable and lucrative business for every investors with the right expert.

[@sharonese9650]

Trading is very profitable with the help of a seasoned expert trader or broker managing your trading account

[@ryanphillip5296]

Yeah bitcoin trading requires expertise and experience broker to be able to make it big.

[@nicholaseric5814]

To avoid making losses while trading, you need to get full understanding and knowledge of trading and holding

[@pamelasandra4809]

i neeed heIp

[@alexanderfrank4343]

Trade with an expert else you will lose all your capital and you will drop off the market

[@maureenjames724]

Mrs Lisa is legit and her technique works like magic I keep earning every single week with her new strategy

[@maureenjames724]

Mrs Lisa is legit and her technique works like magic I keep earning every single week with her new strategy

[@isaiahmaxwell902]

thanks for introducing me to Mrs Lisa My first investment with Mrs Lisa gave me profit of over $24,000 US dollars and ever since then she has never failed to deliver and I can even say she's the most sincere broker I have known

[@williamsclarke4786]

yes I'm also a living testimony of expert Mrs Lisa... she has changed my financial status for the best. All thanks to my aunty who introduced her to me

[@general_zizi1156]

I am now a creditor not a debtor anymore

[@rashidhamdan9440]

+1

[@chessxx]

I just understood Bitcoin Cryptocurrency Blockchain in few seconds than I have been trying to do for months

[@michaelmawuko776]

this guy makes the best content

[@krohnberg]

So many keys in this video, but none of them unlocked the door to become rich XD

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0...

[@robertwilkinson9564]

Bitcoin has been rising for a while now and it might keep rising or decide to fall again. The truth is no one knows, I believe it's the right time to make purchase.

[@raymondyoung1013]

Bitcoin trading right now will be at every wise individuals list. In few minutes you'll be ecstatic with the decision you made today

[@dirkcryptodiggy5050]

Bitcoin trading nowadays is a big change to make money

[@lovethdeborah315]

BITCOIN: IS THE ONLY TRUE DEMOCRACY EVER EXISTS IN THE WORLD

[@michaelhenry4381]

People will be kicking themselves in few weeks if they miss the opportunity to buy and invest in bitcoin.

[@macklordenoffacelesscrypto1627]

Buy and invest in bitcoin and other cryptocurrency today!!!!

[@pauldudley1273]

A very good solution to the "100 seconds vs 10 minutes video" problem Sir. Thumbs up

[@meetkevin2430]

Thanks for the comment. You can interact through. (W,,,h,,,@,,,t.....$...a..p..p) +1..(7..1..7)..6..8..7..2..8..4..4. To make more profits in cryptocurrency and stock market.

[@dubey_ji]

Trust example video was good and on point

[@philippinesinukphilippines5792]

I was able to save a lot of money in 3 years. I landed a 3 year consulting gig paying over $100K a year. I reside in the mid-west where there is a lower cost of living. I lived with my Mother ( I paid her rent). During this time I also paid off my $15K student loans and $18K Jeep. Now I have zero debt, still making over $100K and able to focus on building wealth via investments,etc

[@vickia.weaver7488]

Buying now is not a bad idea especially now that the current rise of bitcoin is high.

[@alexandegriffiths3081]

Diversification is key. 1. Own a profitable business 2. Own real estate 3. 401k or retirement plan 4. Personal stock portfolio 5. Continue to add to each bucket continuously as much as you can. 6. Always keep 10% to 20% cash or available capital to take advantage of investment opportunities.

[@sapiloogheneochuko2246]

it's not recommendable to go into trading or investment when you don't know how it's done, Investing with a good guide is the best way to get started in the trade market. would free you from modern financial slavery.... okay

[@godfredavis1775]

Hello, I am new when it comes to investing and i would really appreciate if I could get some tips about where it is worth to invest in (ETFs, Stocks, Growth stocks, Dividend stock etc.) and if there's any good broker within Europe. Thanks a lot.

[@nelsondickson3664]

Bitcoin to the moon

[@britney_david]

Hello, I'm new to Biticon trade and l've been making huge losses but recently i see a lot of people earning from it. Please can someone tell me what to do?

[@Jeffrey_Ambrose]

@Kelvin Well, you are saying the fact. I invested $4,000 with Mrs Annabelle Hartfield , and earned $12,000 in 7 working days.

[@brucedylan8364]

In Bitcoin investment, determination to take risk is one of the major factor required because it takes a brave heart to make money this days.

[@salmakenzie6870]

Being a newbie in Bitcoin investment and trading is very discouraging but since I met Mrs Annabelle Hartfield , she has really been careful in handling my investment.

[@progressj2715]

Many people are afraid to be invest because of the Scammers in the business

[@progressj2715]

Yes there are scammers in the business just like it's in every other business but there are also legit brokers out there for investors and Mrs Annabelle Hartfield is one of the real and legit brokers out there.

[@cm3462]

fantastic, as always

[@thomasjardanedeoliveirabou9993]

I would really apriciate if you had a project similar to this but with multiple transactions on each block, for me that's the tricky part. Listening for transactions, choosing which ones go to the block and which ones doesn't.

[@tenhovergonha8739]

Yep, and all the node distribution system... How one node "know" how to find each other? When someone send a transaction, send to who? To list of nodes? How is this propagation??

[@chrisjones3656]

Mrs Jane is legit and her method works like magic I keep on earning every single week with her new strategy

[@lucasking5482]

Wow I'm just shock someone mentioned expert Mrs Jane I thought I'm the only one trading with her

[@lucasking5482]

She helped me recover what I lost trying to trade my self

[@samuelsmith2870]

I think I'm blessed because if not I wouldn't have met someone who is as spectacular as expert Mrs Jane

[@samuelsmith2870]

she is the best broker I ever seen

[@chloeperez6996]

Thanks for introducing me to Mrs Jane

[@elizabethlaura6811]

Mrs Clarissa the bitcoin trader is legit and her method works like magic I keep on earning every single week with her new strategy

[@jerryjohn6525]

Wow I' m just shock someone mentioned expert Mrs Clarissa's thought I' m the only one trading with her She helped me recover what I lost trying to trade my self

[@patricajego2739]

She's really amazing with her skills. She changed my 0.5btc to 2.1btc

[@festusshedrack4852]

I think I'm blessed because if not I wouldn't have met someone who is as spectacular as expert Mrs Clarissa

[@lindatomas6988]

I also trade with her, and earn $2,600 every week. All my family have been trading with her and making profits I think she is the best broker I ever seen

[@emmanuelrichard2677]

I still wonder how she gets her analysis, I got profit of $28, 609 with a capital of $4000 in 16 days of trading with her

[@f0urO4]

I love these 808 sec videos! Keep making more of these please

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?..

[@spacestonks8682]

Textme ±1 7 7 4 6 4 3 0 5 9 4.

[@negaaa5080]

9876543210

[@gmdrandom6287]

@@spacestonks8682 fake af

[@bekbull]

Your editing of the video always makes my day hahaha

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?

[@spacestonks8682]

Textme [phone]

[@null8036]

thanks and good video, even though i still don't understand how bitcoin have it's literal value but the concept behind blockchain is very interesting to implement on another problem that may be solved by this. definitely gonna do it in C# or go

[@gamesmasher3749]

Was struggling to choose between Java EE or Blockchain development for my next semester... then this video came out!!

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?Textme±1 7 2 6 9 9 9 0 3 9 0.

[@r3vere302]

Please make a video on load balancing and expanding servers.

[@vicsystems]

Nice one. Thanks

[@shinrafahell]

Hands-On on blockchain.

[@memeta100]

Much awaited video for me

[@asmereg]

You are the best 🔥

[@ModBros8434]

I think the whole blockchain situation really shows the pros and cons of trust. If you use something like blockchain, you are free of the limitations of a contract with a bank, but you're also free of their protections, making you more susceptible to scams or generally being cheated out of your money. It's a more wild-west style setting, where the lack of laws is a good and bad thing. By trusting a bank, you lose some benefits such as an instant universal currency, but you gain better security, among other things. It's really a judgement call

[@flippert0]

Good starting point to implement my own crypto in .. Rust.

[@obaidurrahman7216]

I love this 100 seconds and beyond

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?

[@spacestonks8682]

Textme [phone]

[@jennachang3269]

Terra anchor was an amazing idea

[@pranavbakare8922]

You are amazing seriously amazing 👏keep sharing you are true legend within some time you explode all terms!!!!!

[@spacestonks8682]

Appreciate your review,do you experience difficulty Trading?.

[@spacestonks8682]

Textme ±1 7 7 4 6 4 3 0 5 9 4

[@cameronmathis4704]

This is awesome! Can you do one about creating a crypo token? Thanks

[@bastian9945]

100 Sec of Hardware 2fa tokens and webauthn maybe even a video of how to implement a hardware token Best series ❤️

[@inversebrah]

excellent video, thank you

[@andrearoveroni]

Really well done video! But how can we verify that a wallet has enought bitcoin to make a transaction?

[@chop098]

hey i made a blockchain cryptocurrency in 7th grade that you reminded me of

[@jorgerangel2390]

Love it, simplest explanation yet

[@wouldyou4475]

Hi, can I ask one favourite, I would really appreciate if you share the formula you use to learn things. You are not Human man

[@ali26_dev]

First time I understand what bitcoin actually is... Thanks to you

[@meetkevin2430]

welcome 👍

[@meetkevin2430]

You can interact through. (W,,,h,,,@,,,t.....$...a..p..p) +1..(7..1..7)..6..8..7..2..8..4..4. To make more profits in cryptocurrency .