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Ethereum Address Validation Php

Ethereum | Drupal.org

Ethereum | Drupal.org

Add the following to the repositories section... Run composer install to get all required dependencies Make sure Drupal has a Ethereum Node to read from by configuring Configure Ethereum connection (/admin/config/ethereum/network). Saving the form settings will validate the current settings and let you know if something is wrong. You can start testing with Infura networks provided. If you used composer to install Drupal core and the Ethereum module everything should work out of the box using Infura's free service to connect to the Ethereum network. The quickest way to do this is to follow the steps below. You will need PHP Composer and drush installed on your system. Alternatively, you can install Drupal manually . # Download latest Drupalcomposer create-project drupal-composer/drupal-project:~8.0 drupal --stability dev --no-interaction# Create a Databasemysql -uroot --execute="CREATE DATABASE \`drupalEthereumTest.local\`;"# Drupal with drush# Create a configuration export directory. This is not required, but very usefull.mkdir drupal/config# Change to web root cd drupal/web/# Scripted drupal installation. Revalidate the database. It will be overwritten.drush site-install standard --db-url="mysql://root:[email protected]:3306/drupalEthereumTest.local" --account-name="tho" --account-pass="password" --site-name="drupalEthereum.local" --account-mail="[email protected]" --site-mail="[email protected]" --config-dir="../config" --notify="global" DON'T FORGET TO CHANGE YOUR PASSWORD AFTER FIRST LOGIN. RestUI is a user interface for Drupal 8's REST module. You'll need it for development. { "type": "package", "package": { "name": "ethereum/web3.js", "version": "1.0.0-beta.35", "type": "drupal-library", "dist": { "url": ""type": "zip" } }}, Composer commands need to be run fr Continue reading >>

Blockchain Developer Api For Bitcoin, Dash, Ethereum, Testnet And More | Blockcypher

Blockchain Developer Api For Bitcoin, Dash, Ethereum, Testnet And More | Blockcypher

// _ _ // |_) | _ _ | / ._ |_ _ ._// |_) | (_) (_ |< \_ \/ |_) | | (/_ | // / | Continue reading >>

Php - Check If $ethereumaddress Valid - Stack Overflow

Php - Check If $ethereumaddress Valid - Stack Overflow

I'm using PHP and curl with json to interact with my geth server. I'm able to do all I want except one thing : checking if user inputed address is valid according to ethereum wallet format. I saw a javascript function here ( ) but I'm mostly using PHP, I'm not into JS at all. Also, read the general algorithm (how is it checked generally) and write it in PHP Pavel Janicek Jul 8 '17 at 20:32 @RiggsFolly I'm not asking conversion, I love to learn and I think SO a nice place. I also answer questions you know? btc4cash Jul 8 '17 at 20:39 Can you provide any constructive answer about ethereum/regex validation in PHP or you just felt here by hazard? btc4cash Jul 8 '17 at 20:40 Basically, you can convert the javascript entirely to PHP.Here i have been able to convert and test the code for validating an ethereum address in PHP. /** * Checks if the given string is an address * * @method isAddress * @param {String} $address the given HEX adress * @return {Boolean}*/function isAddress($address) { if (!preg_match('/^(0x)?[0-9a-f]{40}$/i',$address)) { // check if it has the basic requirements of an address return false; } elseif (!preg_match('/^(0x)?[0-9a-f]{40}$/',$address) || preg_match('/^(0x)?[0-9A-F]{40}$/',$address)) { // If it's all small caps or all all caps, return true return true; } else { // Otherwise check each case return isChecksumAddress($address); }}/** * Checks if the given string is a checksummed address * * @method isChecksumAddress * @param {String} $address the given HEX adress * @return {Boolean}*/function isChecksumAddress($address) { // Check each case $address = str_replace('0x','',$address); $addressHash = hash('sha3',strtolower($address)); $addressArray=str_split($address); $addressHashArray=str_split($addressHash); for($i = 0; $i < 40; $i++ ) { // the nt Continue reading >>

Deftnerd/cryptoaddressvalidator

Deftnerd/cryptoaddressvalidator

Add the following to the providers array in your config/app.php file DeftNerd\CryptoAddressValidator\CryptoAddressServiceProvider::class Test any onion address to see if it follows the format Validator::make(['test' => 'facebookcorewwwi.onion'], ['test' => 'onion'])->passes(); //true Validator::make(['test' => 'notarealonionaddress.onion'], ['test' => 'onion'])->passes(); //false Validator::make(['test' => 'facebook.com'], ['test' => 'onion'])->passes(); //false Test a Bitcoin address to see if it's valid. Checks for proper Base58 encoding, tests the checksum, verifies the network prefix byte is one of (mainnet regular, mainnet p2sh, testnet regular, testnet p2sh) Validator::make(['test' => '1HB5XMLmzFVj8ALj6mfBsbifRoD4miY36v'], ['test' => 'bitcoin'])->passes(); // true (Bitcoin address) Validator::make(['test' => 'n2eMqTT929pb1RDNuqEnxdaLau1rxy3efi'], ['test' => 'bitcoin'])->passes(); // true (Bitcoin Testnet address) Validator::make(['test' => 'jsd8j8jksdjf9sj98'], ['test' => 'bitcoin'])->passes(); // false (random characters) Validator::make(['test' => 'LQ3B36Yv2rBTxdgAdYpU2UcEZsaNwXeATk'], ['test' => 'bitcoin'])->passes(); // false (Litecoin address) Continue reading >>

Geth Blockchainers

Geth Blockchainers

Having crossed frontiers in unknown and unsafe land, finally, we are settling down. After having described last time how to create our own cryptocurrency in Ethereum Frontier the description of which was way to complicated as we have learnt we will repeat it, this time in Ethereum Homestead, and we assure you: this time itwill be reallyeasy. In fact, creating a new cryptocurrency is even built into the new Ethereum wallet, so if you use the proposed coin-interface , your own currency is even supported with an own pocket in the wallet itself, besides your real Ether this is just gorgeous and if you are still unsure about the world dominance about Ethereum, try this out and hopefully, just be astonished. Ok, enough propaganga, lets get down to the nitty-gritty. Create you own cryptocurrency in Ethereum Homestead. You should be able to fund yourself with some amount of initial value (lets say 10000 items) of your own currency and be able to send it around to any valid Ethereum address. This currency should in no way be related or dependent on an existing crytocurrency like Bitcoins or Ether and creating it should cost you not one penny of your fiat or real crypto-money. The easiest way to archieve the goal would be to just follow the instructions on the new ethereum.org Homestead site closely, you can then use your cryptocurrency in the real and in the Morden testnet. However, this approach has two limitations: It takes longer than five minutes, which is our definition of really easy (but afterwards you will know why it works) It runs on the real Ethereum blockchain or on the Morden testnet, but we want to build this using own very own, local and/or private, Ethereum blockchain. If these limitations do not apply for me, stop here and go ahead and read the official tutoria Continue reading >>

Ethereum Available On Luno Now

Ethereum Available On Luno Now

Subscribe to our daily newsletter. It is free, and it comes with many benefits. But where is the liquidity coming from? How are we supposed to know what it costs when there isn't even an exchange? We leverage multiple pools of liquidity and try and get you the best deal. It'll be that way until/ if we launch an ETH exchange. ETH wallet IDs that are all lower case are somewhat legacy. Case sensitive addresses were introduced as an extra checksum to ensure that addresses are valid, these are the addresses we support. I'm afraid we do not support older, lowercase addresses. Unfortunately, many of the exchanges still generate what you call "somewhat legacy" addresses. Further to this, many of your customers have been in the crypto game for some time and will have "legacy" addresses even on those exchanges that now support "modern?" addresses with upper case letters. Furthermore, I have transferred ETH from CoinExchange, Bittrex, Binance, cex.io, and one of your main competitors for South African residents, ice3x. NONE of these exchanges have problems with sending to "legacy" addresses. They understand the need for backwards compatibility. I have a large amount of ETH sitting in my Luno account that is now effectively useless. I use mostly Bittrex, which does not allow you to generate a new "modern?" mixed case address. So I created a CoinExchange account and generated a ETH wallet address yesterday. Guess what, all lower case. The current reality is that all your competitors (that I have experienced, which is quite a few) offer their clients the ability to use all ETH wallets currently in existence. This is a game changer for me and everyone who is complaining about having their ETH stuck in Luno on the SA Telegram and Discord cryptocurrency groups. The worst part about it Continue reading >>

How To Create Ethereum Address In Coinbase

How To Create Ethereum Address In Coinbase

How to create Ethereum address in Coinbase I'm working on Coinbase API using the official PHP SDK of Coinbase. I'm trying to create Ethereum addresses using the API, if I use this $client->createAccount($account); method to create address, it doesn't work for Ethereum, it only creates Bitcoin address. Here is the create account method . It would be great if anyone can help me or guide me to the right direction. Appreciate your time! Hello ... you should refer to this you can use another source to find news and tricks here This topic was automatically closed 91 days after the last reply. New replies are no longer allowed. Continue reading >>

Accounts, Addresses, Public And Private Keys, And Tokens

Accounts, Addresses, Public And Private Keys, And Tokens

Accounts, Addresses, Public And Private Keys, And Tokens The format of your private key is 3a1076bf45ab87712ad64ccb3b10217737f7faacbf2872e88fdd9a537d8fe266. The format of your account (which is generated from your public key) is 0xC2D7CF95645D33006175B78989035C7c9061d3F9. Note that there is a lowercase version 0xc2d7cf95645d33006175b78989035c7c9061d3f9 and a partially uppercase version 0xC2D7CF95645D33006175B78989035C7c9061d3F9. The partially uppercase version has a checksum to verify the address. See EIP55 - Yet another cool checksum address encoding The password encrypted private key is stored in a JSON file with the following format (newlines and indents added for clarity, example on OS/X): $ more ~/Library/Ethereum/keystore/UTC--2017-03-18T05-48-53.504714737Z--c2d7cf95645d33006175b78989035c7c9061d3f9 {"address":"c2d7cf95645d33006175b78989035c7c9061d3f9", "crypto":{ "cipher":"aes-128-ctr", "ciphertext":"0f6d343b2a34fe571639235fc16250823c6fe3bc30525d98c41dfdf21a97aedb", "cipherparams":{ "iv":"cabce7fb34e4881870a2419b93f6c796" }, "kdf":"scrypt", "kdfparams"{ "dklen":32, "n":262144, "p":1, "r":8, "salt":"1af9c4a44cf45fe6fb03dcc126fa56cb0f9e81463683dd6493fb4dc76edddd51" }, "mac":"5cf4012fffd1fbe41b122386122350c3825a709619224961a16e908c2a366aa6" }, "id":"eddd71dd-7ad6-4cd3-bc1a-11022f7db76c", "version":3} How To Create New Accounts (or Addresses) How To Create A New Account In Go Ethereum (geth) You can generate a new Ethereum account by executing geth account new if you already have the geth Ethereum node software installed: $ geth account newYour new account is locked with a password. Please give a password. Do not forget this password.Passphrase: xxxxxxxxRepeat passphrase: xxxxxxxxAddress: {4e6cf0ed2d8bbf1fbbc9f2a100602ceba4bf1319} A UTC--{year}-{month}--{account} enc Continue reading >>

Verifying An Ethereum Signature On The Server - Php

Verifying An Ethereum Signature On The Server - Php

Verifying an Ethereum signature on the server - PHP Ethereum has an extremely strong Javascript ecosystem. There are fantastic open source projects such as ethereumjs-util which provide out of the box functionality for signing messages with an Ethereum account. One downside to Javascript is that in many areas it poses security issues. One such security risk became apparent as a result of my efforts to implement persistent authentication on EthTools.com (still a work in progress - you were warned). It is fairly easy to utilise open source projects (like ethereumjs-util) to sign arbitrary data messages. What is less easy however is to tell a server that someone has successfully verified their ownership of account x. Well.. that is not strictly true - it is really easy to do exactly that. Simply build a simple API endpoint and fire off a request to it upon successful authentication. The real problem is that it is really easy to create a 'fake' request and send it off to the aforementioned (easily discernible - just look in the console) endpoint. I could easily fire off a request saying that I had verified ownership of any account. With cutting edge technology.. especially technology that 'handles' real value it is especially important that security is given the importance and respect that it deserves. The is especially the case in light of the various attack vectors that have historically been exploited. Furthermore, in its infancy Ethereum has attracted the best of the best - the people that know what they are doing. If there is a security vulnerability, someone will find it. Now.. whilst it is possible to secure AJAX requests and make forgery harder, it is nigh on impossible to make things 100% secure. I needed another way. The way I eventually settled on was simple - s Continue reading >>

Ether - How Can I Check If An Ethereum Address Is Valid? - Ethereum Stack Exchange

Ether - How Can I Check If An Ethereum Address Is Valid? - Ethereum Stack Exchange

How can I check if an Ethereum address is valid? I've read many times that you should never input an address by hand unless you want to accidentally send Ether into no-mans-land. I'd like to know what those checksums might be. Is there a way to tell a typo is occurred? how, and what are the formatting rules to it? Im asking so I can potentially create a wrapper function that checks for these things before submitting to the network. Updated May 2016: EIP 55 added a "capitals-based checksum" and has been implemented by Geth.Here's Javascript code from Geth: /** * Checks if the given string is an address * * @method isAddress * @param {String} address the given HEX adress * @return {Boolean}*/var isAddress = function (address) { if (!/^(0x)?[0-9a-f]{40}$/i.test(address)) { // check if it has the basic requirements of an address return false; } else if (/^(0x)?[0-9a-f]{40}$/.test(address) || /^(0x)?[0-9A-F]{40}$/.test(address)) { // If it's all small caps or all all caps, return true return true; } else { // Otherwise check each case return isChecksumAddress(address); }};/** * Checks if the given string is a checksummed address * * @method isChecksumAddress * @param {String} address the given HEX adress * @return {Boolean}*/var isChecksumAddress = function (address) { // Check each case address = address.replace('0x',''); var addressHash = sha3(address.toLowerCase()); for (var i = 0; i < 40; i++ ) { // the nth letter should be uppercase if the nth digit of casemap is 1 if ((parseInt(addressHash[i], 16) > 7 && address[i].toUpperCase() !== address[i]) || (parseInt(addressHash[i], 16) <= 7 && address[i].toLowerCase() !== address[i])) { return false; } } return true;}; ICAP has a checksum which can be verified. You can review Geth's icap.go and here's a snippet from it: // val Continue reading >>

How To Do An Ethereum Transaction, & Check Your Balance? | Cryptocompare.com

How To Do An Ethereum Transaction, & Check Your Balance? | Cryptocompare.com

How to make an Ethereum Transaction, & check your balance? Once you have managed to set up an Ethereum Miner using either your GPU or your CPU its time to start checking your balance and start trading. Were going to show you how you can check your balance in Command Prompt, how to convert between all the different values of Ether , such as the base unit Wei, and how to make your first transaction! Once you have set up your miner via running the Geth program and Ethminer program (see our guide here on how to get started), you need to open up a third Command Prompt Window. Step 1: This can be done by right clicking on the command prompt in the taskbar at the bottom of your screen and then clicking on the command prompt that appears at the top of the menu. A third command prompt should now be open. Step 2: You now need to tell this Command Prompt where to look to get up and running. Usually the command Prompt window opens looking at your user profile. If this is the case you need to tell Command Prompt to go to wherever you installed geth. In our guide we installed it straight on the C Drive so we need to tell command prompt to get back to the C Drive which we do by typing in cd C:\ and pressing enter. Step 3: You then need to tell Command Prompt what to do. In this case you need to tell it to attach to Geth. So all you type in is geth attach which should look like this C:/>geth attach and then press enter. You now have a console up and running talking to geth so you can start asking it questions or telling it to do things. Remember for"geth attach" to work you need to have anotherCommand Prompt Window runningwith "geth --rpc". If you want to find out your address you type in eth.coinbase. This should look like this C:/>eth.coinbase. Press enter and you should see your ad Continue reading >>

Build Ethereum Online Wallet For Erc20 Token

Build Ethereum Online Wallet For Erc20 Token

Build Ethereum online Wallet for ERC20 token Build Ethereum online Wallet for ERC20 token Hi, i have custom ERC20 token that build using Ethereum smart contract, and i need online wallet for members to manage this token with PHP & MySQL I used to be using free service like [url removed, login to view], but i want more simple functions, already made modification from MyEtherwallet on [url removed, login to view] , but want to be more simple than that, no need swap ether, or display all custom token, just our token. User have to register first as a member, we only need Email address & password, after user input registration data, the script will then send activation/verification link to their email. User must click activation link on their email to continue After sucessfully activated, user can login to member area/dashboard. On the user first login, the script will automaticaly generate Ethereum Wallet Address for this user, based on their email & password (one time only per user) on the member area there will be Main Functions : 1. Show Ethereum Address & Ethereum Balance and Our Token balance 2. Send Token or Ether to another Ethereum Address 3. Check transaction on Blockcahain (can use Etherscan API) 4. Reporting and transaction history (IN and OUT transaction) 5. Download/Backup user Wallet Private key and Keystore JSON File Use responsive CSS Layout and mobile friendly page, no image if user enter login data, then display Member Dashboard (after validating the login) if user click register link, then display register Form, and send activation email. if user first login, then generate Ethereum Address based on their email/password then show Their Ethereum Wallet Address, Balance and Our Token balance. Display Input box where Ethereum Addresss to Send to, and Value t Continue reading >>

Ethereum Developers Apis

Ethereum Developers Apis

[Beta] The Event Log API was designed to provide an alternative to the native eth_getLogs . Below are the list of supported filter parameters: topic0, topic1, topic2, topic3 (32 Bytes per topic) topic0_1_opr (and|or between topic0 & topic1), topic1_2_opr (and|or between topic1 & topic2), topic2_3_opr (and|or between topic2 & topic3), topic0_2_opr (and|or between topic0 & topic2) * fromBlock and toBlock accepts the blocknumber (integer, NOT hex) or 'latest' (earliest & pending is NOT supported yet) * Topic Operator (opr) choices are either 'and' or 'or' and are restricted to the above choices only * fromBlock and toBlock parameters are required * Either the address and/or topic(X) parameters are required, when multiple topic(X) parameters are used the topicX_X_opr (and|or operator) is also required * For performance & security considerations, only the first 1000 results are return. So please narrow down the filter parameters Here are some examples of how this filter maybe used: Get Event Logs from block number 379224 to 'latest' Block, where log address = 0x33990122638b9132ca29c723bdf037f1a891a70c and topic[0] = 0xf63780e752c6a54a94fc52715dbc5518a3b4c3c2833d301a204226548a2a8545 Makes a call or transaction, which won't be added to the blockchain and returns the used gas, which can be used for estimating the used gas [Beta] The WebSocket API allows developers to receive Real-Time notifications about new transactions. The Websocket Demo Page can be useful for seeing how this works. The following policies apply: * To keep the socket connection alive send a {"event":"ping"} every 20 seconds * Maximum number of 30 subscriptions per client * Maximum of 10 concurrent socket connections per/IP * After connecting to the socket you have to subscribe to an event within the next 60 Continue reading >>

Create Ethereum Wallet Address

Create Ethereum Wallet Address

Can anyone here tell me how to generate a legitimate ethereum wallet address without using a wallet of any kind? One that I could eventually import into a wallet to spend funds? What are the steps to creating one, so I can make a program to simply generate addresses? Nobody knows how to generate ethereum addresses? I'm talking about a step-by-step process like for bitcoin. This website lays out how to generate bitcoin addresses: . Isn't there something similar for eth? Quote from: Lillian89 on August 25, 2017, 08:52:18 AM You can create ETH a wallet at this site I think this is the best answer to your question, I strongly agree to make eth wallet via the best... Myetherwallet is only one i know you can generate and migrate the wallet to your device wallet. Just generate a wallet there and download it. Then you can now load the wallet and store funds. It's the easiest and the fastest way to have wallet that can be imported to your device wallet. Me, im using etherwallet. Just load the generated wallet to myetherwallet and there you go... You have created your wallet. So they cannot access accounts, recover keys, reset passwords, nor reverse transactions. Protect your keys & always check that you are on correct URL. In my journey in cryptocurrency I haven't encountered generating a ethereum address without singing to create a ethereum wallet. Well if you change your mind, try to make a wallet here-> This is the best option for ethereum wallet, so far. ...........ICO Dec 1st Dec 30th............ ............Open Dec 1st- Dec 30th............ I always use myetherwallet when I want to make etherium addres because how to use it is very simple I think Myetherwallet is only one and is already commonly used by all bitcoin users. this is Myetherwallet's official address: So they Continue reading >>

Ethereum Php: Ethereumstatic Class Reference

Ethereum Php: Ethereumstatic Class Reference

DOXYGEN todo does not work consistently. Not all todo's are picked up. Definition at line 12 of file EthereumStatic.php . Here is the caller graph for this function: Retrieve the Ethereum JsonRPC API definition. Normally the content of the file resources/ethjs-schema.json . Here is the caller graph for this function: Returns hash of the Smart contract method - it's signature. Definition at line 31 of file EthereumStatic.php . bool TRUE if string has "0x" prefix or FALSE. Definition at line 258 of file EthereumStatic.php . Here is the caller graph for this function: Tests if the given string qualifies as a Ethereum address. (DATA, 20 Bytes - address) bool TRUE if string is a Valid Address value or FALSE. Definition at line 230 of file EthereumStatic.php . Pretty basic solidity function verification might need improvement. "The signature is defined as the canonical expression of the basic prototype,i.e. the function name with the parenthesised list of parameter types." This function ignores Aliases. E.g: test(uint) test(uint256) should both result in 0x29e99f07. This is intentional. It is not recommended to use short names for function signatures. Continue reading >>

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