Using the blockchain as a digital signature scheme ...

Bitcoin uses digital signatures (ECDSA) to prove ownership of funds, so sending bitcoins requires the owner of them to digitally sign authorizing the transfer. This transaction is sent to Bitcoin's public network and later recorded in Bitcoin's public database (blockchain), so anyone can verify it by checking its digital signature.

Beyond that, Bitcoin has a scripting opcode called OP_RETURN that...  [more...]

52 Articles (and 13 Videos) for this topic

 

How To Verify A Signed Message Using Blockchain Wallet ...

In this video, We will show you How To Verify A Signed Message Using Blockchain Wallet?

A bitcoin signed message contains 3 three things -

1. Bitcoin Address through which message is being signed.

2. Message from the owner of that address to verify his ownership.

3. The signature which is...  [more...]

24 Articles (and 1 Videos) for this topic

Check also :

Exploiting Bitcoin's SIGHASH_SINGLE signature type | Jon Cave

Exploiting Bitcoin's SIGHASH_SINGLE signature type

Coinspect, a new Bitcoin focused security company, recently disclosed technical details of an attack against Copay's multisignature wallets . At the same time they issued a challenge to recover the Bitcoins that had been used to test the Copay exploit. This post will go over the details of this challenge and how to solve it.

When the challenge...  [more...]

22 Articles (and 2 Videos) for this topic

 

Technology roadmap - Schnorr signatures and signature ...

The replacement of Bitcoin's digital signature algorithm (ECDSA) for the more efficient Schnorr algorithm has long been at the top of the wish list for many Bitcoin developers. A simple algorithm leveraging elliptic curve cryptography, Schnorr enables several improvements over the existing scheme all while preserving all of its features and security assumptions.

Notably, Schnorr signatures support "native multisig" which enables the aggregation...  [more...]

22 Articles (and 3 Videos) for this topic

Schnorr signatures and signature aggregation - Bitcoin Core

The replacement of Bitcoin's digital signature algorithm (ECDSA) for the more efficient Schnorr algorithm has long been at the top of the wish list for many Bitcoin developers. A simple algorithm leveraging elliptic curve cryptography, Schnorr enables several improvements over the existing scheme all while preserving all of its features and security assumptions.

Notably, Schnorr signatures...  [more...]

19 Articles (and 1 Videos) for this topic

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How to Earn Bitcoin? - Forum Signature Campaigns | Digital ...

How to Earn Bitcoin? - Forum Signature Campaigns

How to Earn Bitcoin? - Forum Signature Campaigns

April 15, 2015

By JP Buntinx Leave a Comment

In our previous article on how you earn your first [piece of a] Bitcoin without investing, we took a closer look at Bitcoin Faucets. �While these faucets are a great tool for the novice user, they only offer minimal�information on things you should...  [more...]

9 Articles (and 2 Videos) for this topic

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bitcoin-script - npm

JavaScript implementation of Script, Bitcoin's scripting language, along with a Script Playground, deployed here . See my blog post for more.

The original ES6 source can be found on GitHub .

Usage

This package can be used to evaluate Bitcoin scripts as follows:

var�evaluate�=�require('bitcoin-script').evaluate;

evaluate(script);

//�=>�true�

(Note: here, OP_VERIFY could be excluded, as...  [more...]

10 Articles (and 1 Videos) for this topic

 
 
 

How To Verify A Signed Message Using Blockchain Wallet ...

In this video, We will show you How To Verify A Signed Message Using Blockchain Wallet?

A bitcoin signed message contains 3 three things -

1. Bitcoin Address through which message is being signed.

2. Message from the owner of that address to verify his ownership.

3. The signature which is...

Read more


Website: youtube.com

Related topics : bitcoin signature verifier / bitcoin wallet sign up / bitcoin wallet address blockchain / bitcoin signature verification / all used bitcoin addresses

How to Earn Bitcoin? - Forum Signature Campaigns | Digital ...

How to Earn Bitcoin? - Forum Signature Campaigns

How to Earn Bitcoin? - Forum Signature Campaigns

April 15, 2015

By JP Buntinx Leave a Comment

In our previous article on how you earn your first [piece of a] Bitcoin without investing, we took a closer look at Bitcoin Faucets. �While these faucets are a great tool for the novice user, they only offer minimal�information on things you should...

Read more


Website: digitalmoneytimes.com

Related topics : bitcoin signature campaign / bitcoin forum faucet / bitcoin digital signature / bitcoin mining earn money / bitcoin earn money

Upgrade Your Bitcoin Security with a Multi-Signature Wallet

A multi-signature wallet requires several private keys to authorize bitcoin transactions. The multi-signature bitcoin address structure lets you splits those private keys across multiple devices or among multiple people. You choose how many devices or people ("copayers") you will share the wallet with. You also choose how many copayers need to sign off on a transaction.

For example, you can...

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Date: 2017-12-20 06:28:34
Website: https://blog.bitpay.com

Related topics : bitcoin wallet address private key / bitcoin wallet private key backup / make a secure bitcoin wallet / create a bitcoin wallet address / setup a bitcoin wallet

Schnorr signatures and signature aggregation - Bitcoin Core

The replacement of Bitcoin's digital signature algorithm (ECDSA) for the more efficient Schnorr algorithm has long been at the top of the wish list for many Bitcoin developers. A simple algorithm leveraging elliptic curve cryptography, Schnorr enables several improvements over the existing scheme all while preserving all of its features and security assumptions.

Notably, Schnorr signatures...

Read more

Date: 2017-11-15 03:06:15
Website: https://bitcoincore.org

Related topics : bitcoin signature aggregation / bitcoin digital signature algorithm / bitcoin signature algorithm / bitcoin digital signature / bitcoin signature verification

Using the blockchain as a digital signature scheme ...

Bitcoin uses digital signatures (ECDSA) to prove ownership of funds, so sending bitcoins requires the owner of them to digitally sign authorizing the transfer. This transaction is sent to Bitcoin's public network and later recorded in Bitcoin's public database (blockchain), so anyone can verify it by checking its digital signature.

Beyond that, Bitcoin has a scripting opcode called OP_RETURN that...

Read more


Website: https://blog.signatura.co

Related topics : bitcoin digital signature / all used bitcoin addresses / bitcoin wallet address private key / bitcoin signature verifier / bitcoin wallet address blockchain

How to do a Bitcoin signature to verify address ownership ...

How to do a Bitcoin signature to verify address ownership?

In order to verify your address ownership you should have a wallet address which was used to deposit BTC to your CEX.IO�account. �Using this wallet address you can perform Bitcoin Signature Verification for the depositing...

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Website: https://support.cex.io

Related topics : get a bitcoin wallet address / bitcoin deposit address / bitcoin wallet address / bitcoin signature verifier / bitcoin signature verification

Bitcoin signature verification

Verify your signed bitcoin messages.

With this tool you can easily verify any bitcoin message. You just have to provide the bitcoin address, generated signature and the message that...

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Website: http://www.coinig.com

Related topics : bitcoin address generator / bitcoin signature verifier / bitcoin signature verification / bitcoin address ???? / bitcoin address

Bitcoin signature verification

Verify your signed bitcoin messages.

With this tool you can easily verify any bitcoin message. You just have to provide the bitcoin address, generated signature and the message that...

Read more


Website: http://www.coinig.com

Related topics : bitcoin address generator / bitcoin signature verifier / bitcoin signature verification / bitcoin address ???? / bitcoin address

Mastering Bitcoin – O’Reilly Media

Ownership of bitcoin is established through digital keys, bitcoin addresses, and digital signatures. The digital keys are not actually stored in the network, but are instead created and stored by users in a file, or simple database, called a wallet. The digital keys in a user's wallet are completely independent of the bitcoin protocol and can be generated and managed by the user's wallet software...

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Website: http://chimera.labs.oreilly.com

Earn Bitcoins with Bitcointalk Forum by Running Signature ...

Earn Bitcoins with Bitcointalk Forum

Bitcointalk forum is place where you get updates about each and every information about cryptocurrency. I don't know how many of you are familiar with this forum, but Bitcointalk.org is forum run by people for people where every user have opportunity to get reward for contribution to�forum. Forum offers signature campaigns. And signature campaigning is...

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Website: https://coinsinfo.xyz

Related topics : bitcoin signature campaign / bitcoin forum faucet / bitcointalk forum / bitcoin forums mining / bitcoin forum

The Cryptography of Bitcoin : Inside 245-5D - ezyang

The Cryptography of Bitcoin

It is actually surprisingly difficult for a layperson to find out precisely what cryptography Bitcoin uses, without consulting the source of Bitcoin directly. For example, the opcode OP_CHECKSIG , ostensibly checks the signature of something... but there is no indication what kind of signature it checks! (What are opcodes in Bitcoin? Well it turns out that the protocol...

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Website: http://blog.ezyang.com

Related topics : all used bitcoin addresses / what are bitcoin hashes used for / bitcoin wallet address private key / bitcoin wallet private key generator / all bitcoin private keys

Technology roadmap – Schnorr signatures and signature ...

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Schnorr Signatures

The replacement of Bitcoin's digital signature algorithm (ECDSA) for the more efficient Schnorr algorithm has long been at the top of the wish list for many Bitcoin developers. A simple algorithm leveraging elliptic curve cryptography, Schnorr enables several improvements over the existing scheme all while preserving all of its features and security...

Read more


Website: https://crypto-faucets.in

Related topics : bitcoin digital signature algorithm / bitcoin signature aggregation / bitcoin signature algorithm / bitcoin digital signature / bitcoin signature verification

[Important] Signed Message Verification - The Bitcoin Forum

[Important] Signed Message Verification

Forum rules

Like the original Silk Road, we also prohibit the sale of "anything whose purpose is to harm or defraud." This includes child pornography, stolen credit cards, assassinations and weapons of mass destruction. Unlike the original Silk Road we will also have to delete posts advertising things that are illegal in most jurisdictions. This isn't...

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Website: https://forum.bitcoin.com

Related topics : all used bitcoin addresses / bitcoin sign up account / bitcoin signature verifier / bitcoins sign up / bitcoin sign up page

Bitcoin Core Roadmap Hints at Schnorr Signatures To Reduce ...

Even though there is a ton of focus on Bitcoin Core vs Bitcoin unlimited right now, there are other things to keep an eye on as well. The Core developers released a new roadmap last night which offers some interesting concepts. Perhaps the biggest change is how digital signatures will be changed to a more sophisticated algorithm. This will also help decrease the amount of data found in the...

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Website: http://www.livebitcoinnews.com

Related topics : bitcoin digital signature algorithm / bitcoin signature algorithm / bitcoin digital signature / bitcoin technology blockchain / bitcoin signature

Bitcoin Cash is Bitcoin – Bitcoin.com

October 16, 2017

Bitcoin: Past to Present

In 2017, internal strife and differing views on Bitcoin's fundamental value proposition caused the currency and its community to break off into several distinct groups, each with their own vision of what Bitcoin is and what it is meant to be. This article will explore the different "forks" of Bitcoin and make the case for why Bitcoin Cash is the coin most...

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Website: https://www.bitcoin.com

What Does Bitcoin Mean | Why Bitcoins Are So Controversial

What Does Bitcoin Mean

Why Bitcoins Are So Controversial

Numerous reasons have emerged over the years making Bitcoin currency so popular and a real media sensation yet a lot of people have not been able to come to terms with bitcoins, this is why there is a need for us to, first of all, provide answers to the question; 'What Does Bitcoin Mean?' before going ahead with why Bitcoins are so...

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Website: http://bitcoinsbazaar.com

Exploiting Bitcoin's SIGHASH_SINGLE signature type | Jon Cave

Exploiting Bitcoin's SIGHASH_SINGLE signature type

Coinspect, a new Bitcoin focused security company, recently disclosed technical details of an attack against Copay's multisignature wallets . At the same time they issued a challenge to recover the Bitcoins that had been used to test the Copay exploit. This post will go over the details of this challenge and how to solve it.

When the challenge...

Read more

Date: 2014-08-08 21:00:09
Website: http://joncave.co.uk

Related topics : bitcoin wallet address private key / bitcoin signature hash / what does a bitcoin transaction look like / bitcoin signature script / all bitcoin private keys

Technology roadmap - Schnorr signatures and signature ...

The replacement of Bitcoin's digital signature algorithm (ECDSA) for the more efficient Schnorr algorithm has long been at the top of the wish list for many Bitcoin developers. A simple algorithm leveraging elliptic curve cryptography, Schnorr enables several improvements over the existing scheme all while preserving all of its features and security assumptions.

Notably, Schnorr signatures support "native multisig" which enables the aggregation...

Read more


Website: http://insidebitcoins.com

Related topics : bitcoin digital signature algorithm / bitcoin signature algorithm / bitcoin digital signature / bitcoin signature verification / bitcoin signature size

Bitcoin Exchange Script | Bitcoin Currency Exchange Script ...

Create a Bitcoin Website Now!

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Offering the best Bitcoin Buy / Sell PHP Website

We offer a best bitcoin website Powerful, well-designed lightweight, our Clone Script offers a complete Peer to Peer website package that makes it easy to start in moments.

Get Advanced Bitcoin Clone Script from us!

Offers robust development support for 'bitcoin php website' such...

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Website: http://www.coinsclone.com

Bitcoin address - Bitcoin Wiki

Bitcoin address is an identifier (account number), starting with 1 or 3 and containing 27-34 alphanumeric Latin characters (except 0, O, I). Address can be also represented as the QR-code, is anonymous and does not contain information about the owner. It can be obtained for free, using, for example, Bitcoin software. Address example:

14qViLJfdGaP4EeHnDyJbEGQysnCpwn1gZ

Addresses can be generated...

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Website: https://en.bitcoinwiki.org