Private Key und Public Address - einfach erklärt

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Send and receive bitcoin purely via sms.
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08-20 00:35 - 'Bitcoin uses cryptographic key "pairs" / There is a public address and a private key (long string of letters and numbers for each) / A simple way to understand it is a username(public address) and a password to allow s...' by /u/UncleBitcoinJones removed from /r/Bitcoin within 7-17min

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Bitcoin uses cryptographic key "pairs"
There is a public address and a private key (long string of letters and numbers for each)
A simple way to understand it is a username(public address) and a password to allow sending money from that address(Private key do not share)
That is basically the gist right there.
Remember Bitcoin is a network so there are many many options from hundreds of vendors and open source projects to simplify the process and access the Bitcoin for you. These are called wallets. They manage your key pairs for you. To back up a wallet you write down a 24 word seed phrase(private do not share) this will allow you the leisure of not storing every single address you own and let the wallet store them for you. If your wallet is destroyed or lost this seed phrase is how you recover your coins. Only use trusted wallets that this sub can recommend you, use the search bar.
You can get Bitcoin by earning it. ORRR trading from an exchange. Depending on your country and local laws this could be various different places. But generally Kraken, Gemini, and Binance are the most popular.
Remember however, if your Bitcoin is not in your wallet or you do not have the key pairs it is in, then you do not own the Bitcoin. Keeping your Bitcoin on an exchange or another 3rd party is highly risky and vulnerable to hacks or the exchange just straight up stealing your funds or even government stealing your funds.
So: Not your keys not your coins.
Plus: Don't use Bitcoin "Doublers" or anyone claiming if you send them bitcoin they will send you back double.
Plus: Don't buy altcoins, ICOs, or get involved with defi.
Recap: [link]1
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Author: UncleBitcoinJones
1: you*u*be/*szOt**OjXU
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Theoretically, if there was a vulnerability making private keys derivable from public keys would Bitcoin be doomed?

I'm trying to understand how Bitcoin would respond. Would it find a new way or would that be impossible? In the event that someone could break elliptical curve private public key encryption.
submitted by Stack3 to Bitcoin [link] [comments]

What is bitcoin going to do to prevent quantum computers from generating private keys from public keys?

From what i understand Bitcoin uses a form of RSA to generate public keys and private keys. So when quantum computers gain enough qubits its going to be possible to extract your private key from your public key. Are there currently any proposals for changes to prevent this.
Im just interested in bitcoin so please correct me if im wrong about something
submitted by YungMixtape2004 to Bitcoin [link] [comments]

How in Bitcoin to generate a public key from a private key manually. Step by step.

Done. Thanks, dmar198 !
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How to generate a public key from a private key (EQUAL TO 1) manually (i.e. without coding in python or the like).
Step by step, ONLY using online converters, sites like https://www.rapidtables.com/convert/numbebinary-to-decimal.html or http://tomeko.net/online_tools/hex_to_file.php?lang=en )
___________________________
This question has already been blocked as an off-topic one and marked as "altcoin" category. WHY? It's about Bitcoin. Are the admins incompetent?
___________________________
Of course I have read the theory (wiki, “double and add” algorithm, Elliptic Curve secp256k1 and so on ). It does not help actually. Only on this reason I made this post.
I have a specific question ! -- the SIMPLEST CASE, private key =1. Without common words, just step by step instruction.
Please make it clear finally.
submitted by andrrpetr to Bitcoin [link] [comments]

08-09 12:03 - 'We have been working offline only with private customers until now. And LBC for small trades: BTCLatviaPlease find the BTC Wallets with public keys, where you can see THE history. I've had my guy run some analysis and you can...' by /u/OTCFinance removed from /r/Bitcoin within 0-5min

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We have been working offline only with private customers until now. And LBC for small trades: BTCLatviaPlease find the BTC Wallets with public keys, where you can see THE history. I've had my guy run some analysis and you can see under each corresponding address.
I'd just send the first three for now. Keep in mind that the Buyer can simply return the coins and not pay if not satisfied with coins delivered. The Seller would then send another tranche satisfactory to the Buyer.
KEY 1
[[link]7
7,000.0016205 BTC
1DZ 7k BTC 15% mined, remainder a mix of old coins. nothing worrying
PIC: [[link]8
KEY 2
[[link]9
6,877.71333163 BTC
1Ac2 6.9k 96% mined
PIC: [[link]10
KEY 3
[[link]11
5,106.49661412 BTC
1gt 5.1k 100% exchange washed. all huobi and okcoin
PIC: [[link]12
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Author: OTCFinance
1: *ww.bl*ckcha*n.*om/ru/btc/*ddre*s/1*zjE3ANaKLas****e*ToJ4CQ**r**vw*f 2: *tcfi*ance.net/wp*con*en*/uploads*201*/1**w**le*1.*ng 3: www.bl*c**hai**com/ru/btc/add*****1Ac2J*pQ5c*NeSajd*x*dof*eX*n*S35ft 4: o*cf*nanc*.n*t/wp-co*te*t/u**oads/20*6/**/wal**t2.png 5: ww*.bl*c*cha*n.com/ru/*tc*a**ress/1gtm*zwh*Uz*b8XoS*Hwgyr*b*wdZ**o* 6: ot*fina***.net/wp-co***nt/up**a**/2016*10/wallet3.*ng 7: ww*.b*o*kchain*com/ru*b*c/*ddres*/1**jE3*N*KL*sY2n*e5ToJ**QCXrvDvws**^^1 8: otcfinan*e.n*t/**-con*en*/up*o*ds/2016/10/*al**t1.p***^^2 9: *ww.blockc*ain.**m/ru/b***address/1**2*dp*5c9Ne*a*d*x6d*fxe*k*4S*5ft]^^3 10: *tcfinan*e.net/wp-*o*tent/up*oads*20*6/*0**all*t2*p*g]*^4 11: www*blockchai***o**ru*btc/add*e*s/1gtm*z*hq*z*b*XoShHwg**zbJ*d*47ok]^^5 12: otcfi*a*ce*ne*/wp-*on*ent**pload**2*16/10/*allet*.*ng]^^6
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How in Bitcoin to generate a public key from a private key manually. Step by step?

How to generate a public key from a private key EQUAL TO 5 manually (i.e. without coding in python or the like).
Step by step, ONLY using online converters,
submitted by andrrpetr to Bitcoin [link] [comments]

03-02 21:06 - 'Posting private key instead of public key' (self.Bitcoin) by /u/yaxollum removed from /r/Bitcoin within 4630-4640min

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Have any people accidentally posted their private key instead of their public key when asking for Bitcoin online?
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Posting private key instead of public key
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how to export the private key from bitcoin.com wallet(BTC) and generate a new BCH address using the same pair of public key and private key;

I have a BTC address generated using bitcoin.con wallet. And I mistakenly sent BCH to this address. Now I am thinking to generate the same BCH address to spend my BCH.
submitted by remanal to btc [link] [comments]

How in Bitcoin manually to generate the public key from the private key equal to 105. Step by step. /r/Bitcoin

How in Bitcoin manually to generate the public key from the private key equal to 105. Step by step. /Bitcoin submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

How in Bitcoin to generate a public key from a private key manually. Step by step. /r/Bitcoin

How in Bitcoin to generate a public key from a private key manually. Step by step. /Bitcoin submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

How to generate a public key from a private key manually. Step by step. /r/Bitcoin

How to generate a public key from a private key manually. Step by step. /Bitcoin submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

Couple questions about public / private keys and gifting bitcoin from noob, looking for clear answers

So I am new to bitcoin. I just put a few hundred dollars into my bitcoin (mycelium) wallet and am a bit confused.. There is a lot of different information online about public/private keys and it seems each wallet is handled differently and you get different answers pertaining to each. I just want to know how to be in total control of my bitcoin funds and never have a chance of losing them if I lost my phone no matter what wallet I'm using..
1- I understand that the 12-word "backup" is all I need if I needed to restore my mycelium wallet... but what if mycelium was shut down tomorrow, how would I recover my bitcoin wallet then?
2- A friend has thousands of dollars worth in a coinbase wallet, I am concerned though, since he doesn't need to do any sort of backup, his private key is being held by coinbase and only protected by his password and 2-factor authentication, isn't this less secure then mycelium?? Couldn't he have the same thing happen to coinbase that happened to bitfinex?
3- I want to give bitcoin wallets as gifts to a few family members this Christmas so that they can spend it online and hopefully see the advantages of bitcoin. What is the best way to do this for people with mediocre computer knowledge?
Thanks!!
submitted by Stankiem to Bitcoin [link] [comments]

Is Bitcoin doomed? Can a private key be calculated from the public key?

Is Bitcoin doomed? Can a private key be calculated from the public key? submitted by john_x_cassidy to Bitcoin [link] [comments]

01-18 19:03 - 'ELI5: How Do private and public keys work together?' (self.Bitcoin) by /u/annonymous13579 removed from /r/Bitcoin within 0-5min

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ELI5: How Do private and public keys work together?
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12-02 16:12 - 'Did Segwitaddress.org just give me a bad public/private key pair?' (self.Bitcoin) by /u/sinn98 removed from /r/Bitcoin within 116-126min

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I printed out a couple paper wallets from segwitaddress.org last night to play around with.
Sent a few mBTC to the public key, but now the private key it's supposed to be paired with doesn't work. Importing the private key in Electrum points to an entirely different public key!
Please help, what did I do wrong here? I've tried doing this with both Electrum and Mycelium.
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Did Segwitaddress.org just give me a bad public/private key pair?
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how to export the private key from bitcoin.com wallet(BTC) and generate a new BCH address using the same pair of public key and private key; /r/btc

how to export the private key from bitcoin.com wallet(BTC) and generate a new BCH address using the same pair of public key and private key; /btc submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Hacking my private key FROM my public key, is this possible? /r/Bitcoin

Hacking my private key FROM my public key, is this possible? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Is the program Bitcoin Wallet, that you download completely different from opening a wallet at coinbase.com? Which one is safer?? How can you tell difference between Private/Public Key?? So I can give out address for fundraising???

this is my other thread on my fundraising / how to safely give out your bit coin address? But now I opened a coinbase.com account and it seems like it gives me an entirely new wallet.....
Any Help is much appreciated OTHER THREAD: http://www.reddit.com/Bitcoin/comments/2ajac8/is_it_safe_to_display_my_bitcoin_wallet_address/
submitted by bobjoefrank to Bitcoin [link] [comments]

11-18 16:02 - 'Sweep private key to same public address' (self.Bitcoin) by /u/StaticWood removed from /r/Bitcoin within 19-29min

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Whit Electron Cash I am sweeping my old Bitcoin addresses to get the BTH en dump them for BTC. Now for one's; I did sweep a private key and did make de address where it was supposed to send to - the old address from where i was sweeping it. The mempool seems to see it but Electron doesn't. Did I lose my coins I would claim or will the mempool eventually reject the transaction and will this situation "reset"??
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Sweep private key to same public address
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Author: StaticWood
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WP: 5 years from now you open a time capsule and inside it contains a paper wallet with satoshi's public and private keys /r/Bitcoin

WP: 5 years from now you open a time capsule and inside it contains a paper wallet with satoshi's public and private keys /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

When installing Electrum you get an option to restore a wallet via public/private keys. Can I use this to import from the wallet.dat file? /r/Bitcoin

When installing Electrum you get an option to restore a wallet via public/private keys. Can I use this to import from the wallet.dat file? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Can a public key be derived from the private one? /r/Bitcoin

Can a public key be derived from the private one? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Hack bitcoin (private script) 2019 George Levy - What are Bitcoin Public and Private Keys ... What is a Bitcoin Public & Private Key - YouTube How To Get Private Key of Wallet Address  Getting Your ...

Der Public Key hat eine Einwegfunktion, da die gesendeten Daten nur mit dem zugehörigen Private Key entschlüsselt werden können. Da diese beiden Keys eng miteinander verbunden sind, können Nutzer unfälschbare Signaturen erstellen, die nur von Teilnehmern aus dem Netzwerk, die den entsprechenden Public Key kennen, überprüft werden. Die Schlüsselpaare aus Public und Private Key dienen Bitcoin als Empfangsadressen und zum Erstellen digitaler Signaturen. So können sich die Teilnehmer Kryptowährungen hin- und herschicken. Das Verwalten der Private Keys übernimmt eine Wallet. Es gibt auch Hardware Wallets, die die sicherste Form der Wallets darstellen. Zur Nutzerfreundlichkeit gibt es hierarchisch-deterministische Wallets ... In Bitcoin, a private key is a 256-bit number which can be represented one of several ways. It’s all up to you how you wish to encode it. Private Keys are encoded in Base58. The usual WIF (wallet import format) or BIP32 encodings are case-sensitive and so they require both upper and lower case letters. On the contrary if you represent the keys only using digits then there is no need of lower ... Die Bedeutung des Bitcoin Public Key. Der Bitcoin Private Key hat, wie bereits erwähnt, noch eine weitere Funktion. Aus ihm wird mittels der Elliptischen-Kurven-Kryptographie der Public Key erzeugt. Eine detaillierte Beschreibung der Funktionsweise der Elliptischen-Kurven-Kryptographie würde das Format dieses Beitrags bei weitem überschreiten. Für das grundlegende Verständnis reicht es zu ... How do I, in extreme specificity, convert a given private bitcoin key into a public bitcoin key (Talk to me like I'm 5 and I have to do this step by step or the evil witch will cook me alive in her oven). NOT where can I find a program that will do this, but if I were to do it myself, what would I do? Private Key:

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Hack bitcoin (private script) 2019

Public and Private Keys lay the groundwork for secure and successful Bitcoin transactions. For more information, watch this video and visit https://coiner.co... How To Get Private Key of Wallet Address. In this tutorial we are going to get our private keys from the bitcoin core wallet. This only works when you create... bitcoin private key base64 bitcoin public key balance b.a.d key bitcoin bitcoin key collision bitcoin key checker bitcoin key converter bitcoin key card bitcoin key collection bitcoin key crack ... https://GeorgeLevy.com/Free presents: In this video, I answer the following question from one of the students of the Blockchain and Bitcoin Fundamentals cour...

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