Generate a Bitcoin address. With this generator it is possible to generate a random Bitcoin address. By clicking on the generate button based on the selection the Bitcoin public, wallet and private key then is generated. All keys can be copied to clipboard with the corresponding copy button. Oct 22, 2018  How to get the public key? A public key is derived from a private key. To derive the public key you need an Elliptic Curve, Bitcoin chose to use secp256k1. Your public key is your private key multiplied by the generator point (which is a constant set in the secp256k1 standard), so it’s a.

• Bitcoin Private Key Lookup
• Generate Bitcoin Address From Public Key West
• Generate Bitcoin Address From Public Key Search
• Get A Bitcoin Address

• Your Bitcoin Private Key is a unique secret number that only you know. It can be encoded in a number of different formats. Below we show the Bitcoin Address and Public Key that corresponds to your Private Key as well as your Private Key in the most popular encoding formats (WIF, WIFC, HEX, B64).
• The most common way to send bitcoins is to an address, which is a hash of a Bitcoin public key. The reason we do it that way is so that if there is a vulnerability in elliptic curves, your money can still be safe, since the public key isn't even known until you spend the money, only the hash is known.

A description of how to get an address from a private key on Bitcoin, the simple way (Public Key Hash).

There is an other way

Just so you know, this is not the only way to get a Bitcoin address. Actually, I’m pretty sure your favourite wallet doesn’t use this method in order to produce Segwit-compatible address : an address not created from a public key but from a script (a set of operations which describes how your bitcoins can be spent : a smart contract 😉 ).

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How to get a private key ?

You don’t actually get a private key, you generate one. You ask for a bank account, you take a Bitcoin account. The private key is nothing but a random number : to generate a private key you “just” have to generate a random number. I put “just” in quotes because it is impossible to generate a random number in informatic : you need a source of entropy (a source of randomness), for example bitaddress uses your mouse moves as an entropy source.

How to get the public key ?

A public key is derived from a private key. To derive the public key you need an Elliptic Curve, Bitcoin chose to use secp256k1. Your public key is your private key multiplied by the generator point (which is a constant set in the secp256k1 standard), so it’s a point on the curve. The security in this operation is based on the fact that on an elliptic curve you can kind of “multiply” but you can not divide : you cannot retrieve the private key by dividing you public key by the generator point. You can find more information about this process here.

How to get the address ?

The address is an encoded part of a hash of your public key. Because it is the last part of the post, let’s take a concrete example to do this part :

Generate a random private key :

Derive the public key from it :

Pass it through the sha256 function, then the ripemd160 function :

Add 00to the begining. It is called “network byte” and means we are on Bitcoin main network.

Then take the four first bytes of the sha256 hash of the sha256 hash of this word and append it to the end.

Then base58check encode it :

How to code it ?

If you are a developer interested in how these functions are coded, you can check the Python implementation I made for my Bitcoin library on github,here are links to specific functions :

• Generate a private key.
• Derive the public key.
• Base58 encode, decode. Base58Check encode, decode.
• Get the address.

Technical Background Of Version 1 Bitcoin Addresses

Technical background of version 1 Bitcoin addresses Conversion from ECDSA public key to Bitcoin Address This article may be too technical for some users. The more basic article on Bitcoin Addresses may be more appropriate. A Bitcoin address is a 160-bit hash of the public portion of a public/private ECDSA keypair. Using public-key cryptography , you can 'sign' data with your private key and anyone who knows your public key can verify that the signature is valid. A new keypair is generated for each receiving address (with newer HD wallets , this is done deterministically).The public key and their associated private keys (or the seed needed to generate them) are stored in the wallet data file.This is the only file users should need to backup .A 'send' transaction to a specific Bitcoin address requires that the corresponding wallet knows the private key implementing it.This has the implication that if you create an address and receive coins to that address, then restore the wallet from an earlier backup, before the address was generated, then the coins received with that address are lost; this is not an issue for HD wallets where all addresses are generated from a single seed.Addresses are added to an address key pool prior to being used for receiving coins. If you lose your wallet entirely, all of your coins are lost and can never be recovered. Bitcoin allows you to create as many addresses as you want, and use a new one for every transaction.There is no 'master address': the 'Your Bitcoin address' area in some wallet UIs has no special importance.It's only there for your convenience, and it should change automatically when used. Bitcoin addresses contain a built-in check code, so it's generally not possible to send Bitcoins to a mistyped address. However, if the addressContinue reading >>

Bitcoin Address Programming The Blockchain In C#

You know that your Bitcoin Address is what you share to the world to get paid. You probably know that your wallet software uses a private key to spend the money you received on this address. The keys are not stored on the network and they can be generated without access to the Internet. This is how you generate a private key with NBitcoin: Key privateKey = new Key(); // generate a random private key From the private key, we use a one-way cryptographic function, to generate a public key. PubKey publicKey = privateKey.PubKey;Console.WriteLine(publicKey); // 0251036303164f6c458e9f7abecb4e55e5ce9ec2b2f1d06d633c9653a07976560c TestNet is a Bitcoin network for development purposes. Bitcoins on this network worth nothing. MainNet is the Bitcoin network everybody uses. Note: You can acquire testnet coins quickly by using faucets, just google 'get testnet bitcoins'. You can easily get your bitcoin address from your public key and the network on which this address should be used. Console.WriteLine(publicKey.GetAddress(Network.Main)); // 1PUYsjwfNmX64wS368ZR5FMouTtUmvtmTYConsole.WriteLine(publicKey.GetAddress(Network.TestNet)); // n3zWAo2eBnxLr3ueohXnuAa8mTVBhxmPhq To be precise, a bitcoin address is made up of a version byte (which is different on both networks) and your public keys hash bytes. Both of these bytes are concatenated and then encoded into a Base58Check: var publicKeyHash = publicKey.Hash;Console.WriteLine(publicKeyHash); // f6889b21b5540353a29ed18c45ea0031280c42cfvar mainNetAddress = publicKeyHash.GetAddress(Network.Main);var testNetAddress = publicKeyHash.GetAddress(Network.TestNet); Fact: A public key hash is generated by using a SHA256 hash on the public key, then a RIPEMD160 hash on the result, using Big Endian notation. The function could look like this: RIPEMDContinue reading >>

Private Key Programming The Blockchain In C#

Private keys are often represented in Base58Check called a Bitcoin Secret (also known as Wallet Import Format or simply WIF), like Bitcoin Addresses. Key privateKey = new Key(); // generate a random private keyBitcoinSecret mainNetPrivateKey = privateKey.GetBitcoinSecret(Network.Main); // generate our Bitcoin secret(also known as Wallet Import Format or simply WIF) from our private key for the mainnetBitcoinSecret testNetPrivateKey = privateKey.GetBitcoinSecret(Network.TestNet); // generate our Bitcoin secret(also known as Wallet Import Format or simply WIF) from our private key for the testnetConsole.WriteLine(mainNetPrivateKey); // L5B67zvrndS5c71EjkrTJZ99UaoVbMUAK58GKdQUfYCpAa6jypvnConsole.WriteLine(testNetPrivateKey); // cVY5auviDh8LmYUW8AfafseD6p6uFoZrP7GjS3rzAerpRKE9Wmuzbool WifIsBitcoinSecret = mainNetPrivateKey privateKey.GetWif(Network.Main);Console.WriteLine(WifIsBitcoinSecret); // True Note that it is easy to go from BitcoinSecret to private Key. On the other hand, it is impossible to go from a Bitcoin Address to Public Key because the Bitcoin Address contains a hash of the Public Key, not the Public Key itself. Process this information by examining the similarities between these two codeblocks: Key privateKey = new Key(); // generate a random private keyBitcoinSecret bitcoinSecret = privateKey.GetWif(Network.Main); // L5B67zvrndS5c71EjkrTJZ99UaoVbMUAK58GKdQUfYCpAa6jypvnKey samePrivateKey = bitcoinSecret.PrivateKey;Console.WriteLine(samePrivateKey privateKey); // True PubKey publicKey = privateKey.PubKey;BitcoinPubKeyAddress bitcoinPublicKey = publicKey.GetAddress(Network.Main); // 1PUYsjwfNmX64wS368ZR5FMouTtUmvtmTY//PubKey samePublicKey = bitcoinPublicKey.ItIsNotPossible; Generate a private key on the mainnet and note it. Send bitcoins to it. As muchContinue reading >>

Bitcoin Private Keys: Everything You Need To Know

Bitcoin Private Keys: Everything You Need To Know By: Sudhir Khatwani In: Bitcoin , Wallets Last Updated: What if you lost all of your bitcoins tomorrow? What would you do? If you dont own your private key, you dont own your bitcoins. Even the most knowledgeable man on Bitcoin says: The private key must remain secret at all times because revealing it to third parties is equivalent to giving them control over the bitcoins secured by that key. The private key must also be backed up and protected from accidental loss, because if its lost it cannot be recovered and the funds secured by it are forever lost, too. In my earlier guide on Bitcoin wallets , I have used two terms extensively-Private Address (or key) and Public Address (or key).These keys are what make Bitcoin the safest and most widely used cryptocurrency . Tounderstand private keys and public keys, let us look at an example. Consider a mailbox where you receive your physical mail. It has a unique and specific number (an address). If someone has to deliver you a letter, he/she must know your house/flat number to deliver it. And as the receiver, you have a private address (or key)to unlock the mailbox and collect your belongings. In real life, do you give your keys to someone unknown? You always keep track of your key and dont jeopardize the contents inside of your mailbox. Similarly, just like your house/flat number, anyone in the Bitcoin world can know your public address(Bitcoin address) to send you bitcoins. And to unlock (spend/send) those bitcoins, you would requireyour private address (or key)for which you need to take full responsibility, just like the keys of the mailbox. I feel that understanding the underlying technical aspect of keys is important so that your remain better informed and educated enoughContinue reading >>

What's A Bitcoin Address? Public Keys, Private Keys, And Addresses Explained

One of the things I get asked all the time is what is a bitcoin address?. Theres the full technical answer for someone who wants to build bitcoin technologies, but theres a lot less to know to bea user of bitcoin nowadays. For example, I bet you didnt know that email runs on a protocol called SMTP (Simple Mail Transfer Protocol) which plays a similar role in email that the bitcoin protocol does in transferring bitcoin (although with some key differences). But if I asked you to fire off an email to [email protected] you could have something ready to send in less than a minute. Sending bitcoin is a similar level of complexity, only you dont need to write a message to send bitcoin. Even Fluffy can send an email with her eyes closed. A lot of people seem to worry about learning the complex mathematics behind the bitcoin protocol before buying and using bitcoin. This might have been true pre-2014 before hoards of startups set out to make bitcoin accessible, but today its simply not the case. So Im going to give you the basic information you need to know to be a userof bitcoin, but not a mathematical expert. So lets get started! A bitcoin address is one of the key concepts that make the currency and the blockchain work. It isnt quite as straightforward to define or explain as an email address. You first need to know about two other parts of bitcoin in order to see how the address fits into the picture: a private key and a public key. The main difference is that you dont use the same address to send bitcoin as you do to receive it. Instead, there are three key terms to know: Private key : a 64 character long code using any combination of the letters A-F and the numbers 1-9. You can see an example of a private key on the image above.This is what you use to send money out of youContinue reading >>

Java - How To Generate Multiple Bitcoin Address From 1 Public Key - Stack Overflow

how to generate multiple bitcoin address from 1 public key I'm facing an issue regarding generation of bitcoin address. I want to generate multiple addresses from xpub . Incorrect length for uncompressed encoding I've read many articles i found that Ripemd160(SHA256(string));After hashing, i encode in I'm not sure if my answer is the right one because I don't know how the BitcoinJ library works but just for info: The bitcoin public key is kind of different from RSA public keys, you should add 04 at the beginning of the string. In your case the key value should be equals to: 04xpub661MyMwAqRbcGJxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx So the public key generated will have the following: 1 byte 0x04 + 65 bytes: 32 bytes corresponding to X coordinate and 32 bytes corresponding to Y coordinate Yes, I agree with this answer Elie Daher Mar 26 at 10:40 I followed this but without adding 04 at the start. try again with your. hope it will generate valid address but still confused about multiple addresses Muhammad Saad Mar 26 at 10:44 MessageDigest digest = MessageDigest.getInstance('SHA-256'); String hash=Base58.encode(digest.digest(xpub.getBytes(StandardCharsets.UTF_8))); trying this accroding to picture Muhammad Saad Mar 26 at 10:45 What about the Ripemd160? As I see you've just hashed it with SHA256 then with Base58. @MuhammadSaad Bilal EL CHAMI Mar 26 at 10:49 MessageDigest digest = MessageDigest.getInstance('SHA-256'); String ripe=Base58.encode(ripemd160.getHash(digest.digest(xpub.getBytes(StandardCharsets.UTF_8)))); System.out.println('RIPE'+ ripe); but its not returning valid address Muhammad Saad Mar 26 at 10:52Continue reading >>

Address And Key Format

Bitcoin Private Key Lookup

MultiChain addresses and private keys are similar to those in bitcoin The format of addresses and private keys in MultiChain is similar to that of bitcoin addresses and private keys . However there are some differences, which ensure that addresses and keys created on one MultiChain blockchain are extremely unlikely to be valid on a second chain. This in turns prevents a developer error from accidentally performing an operation on one chain which was intended for another. On a technical level, bitcoins scheme uses a single version byte for addresses, meaning that it can only define 256 separate address spaces. By contrast, MultiChains scheme uses up to 4 version bytes and an additional 4-byte value which modifies a checksum. This allows 264 or over 1019 separate address spaces to be defined. In MultiChain these values are generated randomly when a new chain is created and represented by the address-pubkeyhash-version and address-checksum-value values in the blockchain parameters . There are also address-scripthash-version and private-key-version parameters which define the version bytes for pay-to-scripthash addresses and the exporting of private keys. These *-version parameters can be between 1 and 4 bytes in length, but they must all be the same length. If you want MultiChains addresses and private keys to be fully compatible with bitcoins, use the following values in the blockchain parameters : address-pubkeyhash-version=00, address-scripthash-version=05, private-key-version=80, address-checksum-value=00000000 Steps which differ from the corresponding bitcoin address calculations are indicated below. 283D01856115B7970B622EAA6DAFF2B9ECE30F1B66927592F6EA70325929102B Take the corresponding public key generated with it, which can be in compressed or uncompressed format.Continue reading >>

Generate Bitcoin Address From Public Key West

Hash - Hashing From A Public Key To A Bitcoin Address In Php - Stack Overflow

Hashing from a public key to a bitcoin address in php I am trying to follow the instructions required to turn a 65 byte public key into a bitcoin address using php. The instructions are quite explicit. Can anyone help me with the practicality of doing that in php? 1 - Take the corresponding public key generated with it (65 bytes, 1 byte 0x04, 32 bytes corresponding to X coordinate, 32 bytes corresponding to Y coordinate) 0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6 2 - Perform SHA-256 hashing on the public key 600FFE422B4E00731A59557A5CCA46CC183944191006324A447BDB2D98D4B408 3 - Perform RIPEMD-160 hashing on the result of SHA-256 4 - Add version byte in front of RIPEMD-160 hash (0x00 for Main Network) 00010966776006953D5567439E5E39F86A0D273BEE 5 - Perform SHA-256 hash on the extended RIPEMD-160 result 445C7A8007A93D8733188288BB320A8FE2DEBD2AE1B47F0F50BC10BAE845C094 6 - Perform SHA-256 hash on the result of the previous SHA-256 hash D61967F63C7DD183914A4AE452C9F6AD5D462CE3D277798075B107615C1A8A30 7 - Take the first 4 bytes of the second SHA-256 hash. This is the address checksum 8 - Add the 4 checksum bytes from point 7 at the end of extended RIPEMD-160 hash from point 4. This is the 25-byte binary Bitcoin Address. 00010966776006953D5567439E5E39F86A0D273BEED61967F6 9 - Convert the result from a byte string into a base58 string using Base58Check encoding. This is the most commonly used Bitcoin Address format // step 1$publickey='0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6';$step1=$publickey;echo 'step1 '.$publickey.';// step 2$step2=hash('sha256',$step1);echo 'step2 '.$step2.';// step 3$step3=hash('rContinue reading >>

8 Answers - I Have A Bitcoin Address But No Private Key. How Do I Generate A Private Key?

I have a bitcoin address but no private key. how do I generate a private key? White paper on 7 challenges of online identity verification. Protect yourself & your customers' data. Get it today to understand effective & efficient verification. You need a personal wallet that will let you control the private key, if you store your coins on an exchange they control the private key instead of you. Download an official Bitcoin wallet from here or buy a hardware wallet here , these will allow you own the private key. If you use a online wallet like coinbase, they take care of the technical stuff. You got a deposit address (which changes All the time). And when you send coins it always comes from a different address (When you use Coinbase). If you meant you have a Bitcoin address but No private key, then send your coins to a new wallet you have the private key of. Your question is not formulated really good and clear. Have an educational or career focused company? Quora Ads can promote your business alongside career or school advice. It may be the case that your wallet has private keys encrypted, which will require you to enter a password or passphrase to reveal. These passwords help to make it easier for the end user to manage, without the necessity to use private keys, but you can usually find what they are. Its difficult to answer exactly without knowing which wallet you are using, but if it is a wallet like Exodus, for example, then you can export your private key by opening up the developers menu (ctrl+shift+d), but only do this if you have a valid reason to do so, and delete it from your desktop immediately after you use it. The best thing to do is check the support of your wallet, and see if their FAQs have anything on private keys, but I repeat, make sure you dont expContinue reading >>

Generate Bitcoin Address From Public Key Search

Public Key Bitcore

Represents a bitcoin public key and is needed to be able to receive bitcoin, as is usually represented as a bitcoin Address . See the official Bitcoin Wiki . A PublicKey in Bitcore is an immutable object and can be instantiated from a Point , string, PrivateKey , Buffer or a BN . var privateKey = new PrivateKey();// from a private keyvar publicKey = new PublicKey(privateKey);// from a der hex encoded stringvar publicKey2 = new PublicKey('02a1633cafcc01ebfb6d78e39f687a1f0995c62fc95f51ead10a02ee0be551b5dc'); A public key point should be on the secp256k1 curve, instantiating a new PublicKey will validate this and will throw an error if it's invalid. To check that a public key is valid: if (PublicKey.isValid('02a1633cafcc01ebfb6d78e39f687a1f0995c62fc95f51ead10a02ee0be551b5dc')){ // valid public key} It's important to note that there are two possible ways to represent a public key. The standard is compressed and includes the X value and parity (as represented above in the documentation). There is also a longer version that is uncompressed which includes both X and Y values. Using this encoding will generate a different bitcoin address, so be careful when selecting the encoding. Uncompressed public keys start with 0x04; compressed public keys begin with 0x03 or 0x02 depending on whether they're greater or less than the midpoint of the curve. These prefix bytes are all used in official secp256k1 documentation. > var bitcore = require('bitcore');// compressed public key starting with 0x03 (greater than midpoint of curve)> var compressedPK = bitcore.PublicKey('030589ee559348bd6a7325994f9c8eff12bd'+ '5d73cc683142bd0dd1a17abc99b0dc');> compressedPK.compressed;true> compressedPK.toAddress().toString();'1KbUJ4x8epz6QqxkmZbTc4f79JbWWz6g37'// compressed public key starting with 0x02 Continue reading >>

Cryptography How To Get A Bitcoin Address From Public Key?

Assistant Vice President R&A UI at Barclays Cryptography how to get a Bitcoin Address from publickey? Recently topics like Bitcoin, blockchain, cryptocurrency are widely popular not only in developers circles but generally. As I am very interested and excited about cryptography and its practical application I decided to write an article with practical examples about one of the common operations in Bitcoin lifecycle. Rather than using imaginary pseudo-language I used my favorite Back-End language: Golang or shorter go. When initially setting up, a Bitcoin client software creates new public/private ECDSA key pair which is used to sign and later verify a validity of transaction claim. The same key is used to generate a Bitcoin Address for the owner. So how do we get a Bitcoin Address from the key pair? A Bitcoin address is only a hash, so the sender cant provide a full public key in scriptPubKey. When redeeming coins that have been sent to a Bitcoin address, the recipient provides both the signature and the public key. The script verifies that the provided public key does hash to the hash in scriptPubKey, and then it also checks the signature against the public key. ( ) To calculate a bitcoin address we need public part of ECDSA ( a shorter acronym for Elliptic Curve Digital Signature Algorithm) key pair. It consists of two very long (32 bytes each) numbers between 0 and n where n is the curve order. Those numbers are coordinates that we get by calculating elliptic curve from a private key. In order to display them, those 64 bytes of data is converted to hexadecimal format. It takes 130 hex characters at 4 bits per character to display the full key. Lets assume we are building an API that will accept a public key from a client and our task is to convert that public key inContinue reading >>

Bitcoin Public And Private Keys

There is more to a bitcoin wallet than just the address itself. It also contains the public and private key for each of your bitcoin addresses. Your bitcoin private key is a randomly generated string (numbers and letters), allowing bitcoins to be spent. A private key is always mathematically related to the bitcoin wallet address, but is impossible to reverse engineer thanks to a strong encryption code base. If you dont back up your private key and you lose it, you can no longer access your bitcoin wallet to spend funds. As mentioned, there is also a public key. This causes some confusion, as some people assume that a bitcoin wallet address and the public key are the same. That is not the case, but they are mathematically related. A bitcoin wallet address is a hashed version of your public key. Every public key is 256 bits long sorry, this is mathematical stuff and the final hash (your wallet address) is 160 bits long. The public key is used to ensure you are the owner of an address that can receive funds. The public key is also mathematically derived from your private key, but using reverse mathematics to derive the private key would take the worlds most powerful supercomputer many trillion years to crack. Besides these key pairs and a bitcoin wallet address, your bitcoin wallet also stores a separate log of all of your incoming and outgoing transactions. Every transaction linked to your address will be stored by the bitcoin wallet to give users an overview of their spending and receiving habits. Last but not least, a bitcoin wallet also stores your user preferences. However, these preferences depend on which wallet type youre using and on which platform. The Bitcoin Core client, for example, has very few preferences to tinker around with, making it less confusing forContinue reading >>

The Anatomy Of A Bitcoin Address, Commonly Confused With A Public Key

No Comments Fist Bumps 0 bitcoin , bitcoin address , public key Lets dissect a bitcoin address and see whats inside. At the top of this page,there is a QR code and a string of characters:1JMqyd22x3ZFsdX8zXcbPfwKf72S6BTbtH from the 1 to the H is a valid bitcoin address. Anyone (or any app, program or AI) can send bitcoin to the address and the holder(s) of the private key associated with the address will be able to transact them. First, a little background information is necessary. A bitcoin address is the third stage in bitcoins cryptographic scheme. The scheme begins with a private key from which a public key is derived, and from this public key the bitcoin address is derived. The process is one way, meaning going backwards in the scheme is intractable. One cannot derive a public key from a bitcoin address, and one cannot derive a private key from a public key. Private key > public key > bitcoin address This is possible due to the technique of hashing, a mathematical algorithm that takes data of an arbitrary size and outputs a string of a fixed size, while mathematically covering its tracks. The only way to learn the original data given a hash output is to attempt a brute-force search of possible inputs, a guessing game, to see if ones guess matches the output in question. One-way hash functions are the basis of all modern cryptography. C) 1Ez69SnzzmePmZX3WpEzMKTrcBF2gpNQ55 (the address used to store bitcoins confiscated from the Silk Road ) Notice a few characteristics of these addresses: They are alphanumeric. They contain both letters and numbers, both lower and upper case. (there are exceptions) They are all 34 characters long. (there are exceptions) They begin with the number 1. (there are exceptions) Bitcoin addresses are alphanumeric. However, if you look cContinue reading >>

How To Create A Bitcoin Address From A Public Key?

How to create a Bitcoin address from a Public Key? As seen in our guides to elliptic curve cryptography and how to create a Bitcoin Private key a public key is in fact just coordinates on the Bitcoin curve calculated through multiplying the generator point by the private key number. x coordinate= 7a633d546e723c3f41794549272f63617057382a227b6d393b35303d38 y coordinate= 44437a7439746e35565d3a27713c706423557e78444f4e767a22515724 These numbers are shown in Hexadecimal format, or 256 binary digits shown as 64 hexadecimal digits. If the number was shown in decimal format it would be 1077figures long. If you take these two coordinates and concatenate them i.e. join them end to end to make a 128 characters long string in Hexadecimal format, and then hash them whilst adding to the front a 1 (to indicate an address on the main network, if the address was for the testnet it would start with an m or an n). Address=(Network Version) & Ripemd160(sha256(x&y) & checksum There is also the checksum to add which is essentially a hash of the address of the hash of the address this is to check that the address is what it is to stop typos et al. Checksum=First four bytes of sha256(sha256((Network Version)&Ripemd160(sha256(x&y)) The last step is to change the coding structure into a more readable format or Base58 in the case of Bitcoin. Base 58 is similar to base 64 but with a few characters removed. Base64 uses A-Z, a-z, 0-9, + and /. Base 58 uses the same symbols but removes +,/,0,O, I and l. All the symbols that could be confused for each other are removed making the format readable. The end result is a Bitcoin address of between 27 and 34 characters long! Such as below. Notice that this address begins with 1 meaning it is a Bitcoin main network address and also that the first three charaContinue reading >>

Get A Bitcoin Address

Public Key

A public key is a cryptographic code that allows a user to receive cryptocurrencies into his or her account. The public key coupled with the private key are significant tools required to ensure the security of the crypto economy. When a user initiates his/her first-ever transaction with bitcoin or altcoins , a unique pair of public key and private key is created. Each of the keys are a long string of alphanumeric characters that help to keep a users holdings secure in the digital ecosystem. The private key is known to the user alone and serves as the users digital ID. The private key authorizes the user to spend, withdraw, transfer or carry out any other transaction from his or her account. A sophisticated algorithm is applied to the private key to generate the public key, and both keys are stored in a digital wallet . When a transaction is initiated by a user to send, say bitcoins, to another person, the transaction has to be broadcasted to the network where distributed nodes (i.e. people behind computers) confirm the validity of the transaction before finalizing it and recording it on the blockchain . Before the transaction is broadcasted, it is digitally signed using the private key. The signature proves ownership of the private key, although it does not divulge the details of the private key to anyone. Since a public key is fashioned from the private key, the users public key is used to prove that the digital signature came from his private key. Once the transaction has been verified as valid, the funds are sent to the recipients public address. The public address is a hashed version of the public key. Because the public key is made up of an extremely long string of numbers, it is compressed and shortened to form the public address. In effect, the private key generContinue reading >>