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Bitcoin - The Currency of the Internet

A community dedicated to Bitcoin, the currency of the Internet. Bitcoin is a distributed, worldwide, decentralized digital money. Bitcoins are issued and managed without any central authority whatsoever: there is no government, company, or bank in charge of Bitcoin. You might be interested in Bitcoin if you like cryptography, distributed peer-to-peer systems, or economics. A large percentage of Bitcoin enthusiasts are libertarians, though people of all political philosophies are welcome.
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bitcoin2network

bitcoin2network is an open-source decentralized blockchain ecosystem that eliminates third parties while offering low cost and instantenous transactions. https://bitcoin2.network/
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Electrum - Simply the best thin Bitcoin client

The best, cutting edge thin Bitcoin wallet.
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When you just HAVE to verify a whole batch of Bitcoin signatures

submitted by ILoveBitcoinCash to bsv [link] [comments]

Bitcoin signature ; can it be harmful?

Hi, I was wondering if signing any bitcoin transaction could be harmful? If I do it with multiple adresses is it easier to retrace my bitcoins holdings ?
Thanks
submitted by Louidge to Bitcoin [link] [comments]

When you just HAVE to verify a whole batch of Bitcoin signatures

submitted by ILoveBitcoinCash to btc [link] [comments]

Computational complexity of bitcoin signatures Anonymous transaction even if bitcoin bought through bank?

How many people mine while they are in college? Can you say anything about it? Maybe coin hive, idk. Experts can share information and resources. Usually have! Maybe coin hive, idk. Just recently I've started to read books on this topic. ​. ​? I have been reading about lightning, but cannot wrap my head around it.
submitted by priscillamhudak to ProjectOblio [link] [comments]

Computational complexity of bitcoin signatures Why would Bread Wallet not accept pin?

Is there a way I can get it back? /newb? I know that's hard to answer. This seems like the way I would do it, I have heard about several sites, like Kraken, Cryptsy, BTC-e or Vircurex. I know that's hard to answer. Hello guys, my question is not particularly limited to bitcoin but I got refered to here from.
submitted by priscillamhudak to ProjectOblio [link] [comments]

Computational complexity of bitcoin signatures Payment not showing up Electrum How do I export private key from msigna wallet to electrum?

Thanks! Delhi. Hi, I'm entirely new to the cryptocurrency world, and I would like to be vigilant with regards to not falling for scams. Experts can share information and resources. If you wanted to sell an Ebook for crypto. Chennai. Hyderabad! I’m not trading or storing.
submitted by priscillamhudak to ProjectOblio [link] [comments]

Is a Bitcoin signature derived just from a private key?

Reading through the dev guide.
I'm on transactions. https://bitcoin.org/en/developer-guide#transactions
It says:
"An secp256k1 signature made by using the ECDSA cryptographic formula to combine certain transaction data (described below) with Bob’s private key. This lets the pubkey script verify that Bob owns the private key which created the public key."
But the diagram below it suggests that the signature is derived from the private key + the Pubkey Script.
So is the signature derived just from the private key?
Or is it the private key + the pubkey script?
submitted by ecurrencyhodler to Bitcoin [link] [comments]

Practical Cypherpunk Essentials - Phil Zimmerman, PGP and Bitcoin Signatures, BitcoinTalk Escrow, DeepDotWeb, Various Apps and Resourses. | Bitcoin Historical Index

Practical Cypherpunk Essentials - Phil Zimmerman, PGP and Bitcoin Signatures, BitcoinTalk Escrow, DeepDotWeb, Various Apps and Resourses. | Bitcoin Historical Index submitted by infominer33 to CryptoCurrencies [link] [comments]

Sentiment, a message board which uses Bitcoin signatures for up-voting

The idea is that you can sign a message with a Bitcoin address which holds some bitcoins to give it more weight. Unlike normal internet polls, it is Sybil attack resistant in the sense that one cannot cast arbitrarily many votes. However, the more bitcoins one has, more votes he can cast. In Sentiment, votes are bitcoin-weighted, that is, more bitcoins you have, higher weight your vote has. So we can say that these votes reflect some sentiment in the Bitcoin community...
The idea isn't new. Sybil attack was recently mentioned in this thread, which prompted me to make a proof-of-concept over the weekend.
I need to warn about security implications, though. In theory, if ECDSA is secure (that is, it's not possible to recover a private key from signature(s)) and your wallet isn't flawed, there should be no implications at all. However, if there are attacks against ECDSA, or if your wallet is flawed, the more signatures you make with your keys the higher are the chances that somebody will recover your private key.
The concern is exactly the same as with address reuse. For example, in the past some wallets (IIRC blockchain.info) were hacked because they both reused addresses and relied on bad random number generators (and didn't use deterministic K). So if you reuse addresses this kind of a service will be no additional risk to you. If normally you don't, think twice if it's worth it.
And of course, it is probably a bad idea to bring a cold wallet online just to sign some stupid message.
submitted by killerstorm to Bitcoin [link] [comments]

Practical Cypherpunk Essentials - Phil Zimmerman, PGP and Bitcoin Signatures, BitcoinTalk Escrow, DeepDotWeb, Various Apps and Resourses. | Bitcoin Historical Index

Practical Cypherpunk Essentials - Phil Zimmerman, PGP and Bitcoin Signatures, BitcoinTalk Escrow, DeepDotWeb, Various Apps and Resourses. | Bitcoin Historical Index submitted by cryptoallbot1 to cryptoall [link] [comments]

Frontpage AMA : Sexy Saffron with Bitcoin Signature

Frontpage AMA : Sexy Saffron with Bitcoin Signature submitted by sedonayoda to Bitcoin [link] [comments]

Bitcoinocracy, Vote with your Bitcoin Signature

Bitcoinocracy, Vote with your Bitcoin Signature submitted by bitcoinhustler to Bitcoin [link] [comments]

[uncensored-r/Bitcoin] Signature and key aggregation for Bitcoin

The following post by nullc is being replicated because some comments within the post(but not the post itself) have been silently removed.
The original post can be found(in censored form) at this link:
np.reddit.com/ Bitcoin/comments/7r9thf
The original post's content was as follows:
https://eprint.iacr.org/2018/068
submitted by censorship_notifier to noncensored_bitcoin [link] [comments]

2FA: why not simple printed codes?! why not GPG?! why no Trezor? why not Bitcoin signature?

There are great 2FA methods, why not use them:
1) just printed text code (it helps when your computer is compromised later on) that you should print on paper and scratch on each use.
localbitcoins.com uses that
super easy to implement and to use
2) sign a message with GPG - you already support GPG (in encyrping email) so why not?
3) login with trezor. even wordpress has it
4) like gpg, but use bitcoin message-sign. bonus: can be used by trezor users too, and by almost everyone with hw wallet
submitted by metalzip to bitfinex [link] [comments]

Bitcoinocracy, Vote with your Bitcoin Signature • r/Bitcoin

Bitcoinocracy, Vote with your Bitcoin Signature • Bitcoin submitted by bitcoinhustler to btc [link] [comments]

Is a Bitcoin signature derived just from a private key? /r/Bitcoin

Is a Bitcoin signature derived just from a private key? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Bitcoinocracy, Vote with your Bitcoin Signature

Bitcoinocracy, Vote with your Bitcoin Signature submitted by BitcoinAllBot to BitcoinAll [link] [comments]

I made a website for polling the Bitcoin community, where votes are Bitcoin signatures and it's Proof of Stake; more coins = more votes /r/Bitcoin

I made a website for polling the Bitcoin community, where votes are Bitcoin signatures and it's Proof of Stake; more coins = more votes /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Bitcoinocracy, Vote with your Bitcoin Signature r/Bitcoin

Bitcoinocracy, Vote with your Bitcoin Signature Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

How to check a Bitcoin signature /r/Bitcoin

How to check a Bitcoin signature /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Is BIP202 better than the status quo? Vote with your Bitcoin signature!

submitted by bantrum to btc [link] [comments]

[Hiring] Python module for bitcoin signature verification

I've posted this as a bounty at bountify.co which pays in bitcoin.
https://bountify.co/python-module-for-signature-verification
submitted by dsterry to Jobs4Bitcoins [link] [comments]

$2,500 Bitcoin Giveaway (BitBlock Signature) - YouTube Bitcoin - Digital Signatures Bitcoin 101 - Multi-Signature Addresses pt1 - Coding This ... What are Bitcoin Digital Signatures Bitcoin et les signatures numériques

In bitcoin, an ECDSA signature is not encoded as a simple concatenation of and Instead, it follows the Distinguished Encoding Rules or DER for short. Those rules are formalized in the Abstract Syntax Notation One standard (ASN.1 for short) commonly used to encode arbitrary data objects into a structured binary file [14]. They allow for data compatibility between systems that may use different ... Das in Bitcoin verwendete Verschlüsselungsverfahren ist „Elliptic Curve Digital Signature Algorithm (ECDSA)“ unter der standard elliptic curve “secp256k1”, die eine 128-Bit-Verschlüsselung bietet. Transaktionen in Bitcoin . In jedem Währungssystem ist es notwendig Währungseinheiten zwischen Beteiligten zu transferieren. Bitcoin beruht allerdings auf dem Grundprinzip, dass ... Signing and verifying messages with Bitcoin address. Message verified to be from (address wasn't specified) Digital money that’s instant, private, and free from bank fees. Download our official wallet app and start using Bitcoin today. Read news, start mining, and buy BTC or BCH. Verify a message signed by a bitcoin private key. Verify Message. Verify a message signed by a bitcoin private key. Bitcoin address * Valid bitcoin address. Message * Message signed by the private key of . Signature * Valid signature ...

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$2,500 Bitcoin Giveaway (BitBlock Signature) - YouTube

Schorr Signatures are a new signature scheme that is much stronger than ECDSA (Elliptic curve digital signature algorithm) - which is currently used in Bitcoin. For the complete text guide visit: http://bit.ly/2DxKxTY Join our 7-day Bitcoin crash course absolutely free: http://bit.ly/2pB4X5B Learn ANYTHING about Bitc... BITCOIN [Class 1]: Digital Signatures, Private & Public Keys (2018) - Duration: 8:27. Tech with Catalina 374 views. 8:27. Checking the Digital Signature of Windows Executables - Duration: 10:26 ... Ne perds pas ta clé Les signatures numériques rendent les transactions Bitcoin non répudiables. Cela signifie qu'une fois que vous avez signé quelque chose, vous pouvez dire que vous ne l'avez ... We are giving away $500 to 5 people 14th of January 2021 To enter : Like the video Click the link here to sign-up - https://bitblocksignature.com/registe...

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