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Step-by-step Guide: Getting Started With Ethereum Mistwallet

Step-by-step Guide: Getting Started With Ethereum Mistwallet

Smart Contracts as a Service (SCaaS) platorm Step-by-Step Guide: Getting Started with Ethereum MistWallet According to Coin Market Cap , Ethereum has the second largest market cap amongst Crypto-Currencies, after Bitcoin. Bitcoin and crypto lovers all around have seen Ethereum as an interesting platform that promises scalability, reliability and growth potential. If you still havent started using (or at least experimenting with) Ethereum, its high time you should try your hands on it. The speed with which Ethereum is evolving and grabbing the market share is astonishing. Thats great. But hey, where do I start? If thats what youre thinking, youve landed in the right place. In this guide, well cover everything to help you get started with Ethereum. Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference. To operate the distributed application platform Ethereum, you need a fuel: Ether. It is a form of payment made by the clients of the platform to the machines executing the requested operations. To put it another way, ether is the incentive ensuring that developers write quality applications (wasteful code costs more), and that the network remains healthy (people are compensated for their contributed resources). Thats pretty much what you need to know at this stage to get started. If youre still intrigued and want to learn more, go here and here . To store, accept and send ether, you need a wallet. Download the latest release of mist wallet . Scroll down to Downloads and choose the release as per the system youre using. Choose Ethereum-Wallet-YourSystem. For this guide, Im working through the installation of the wallet for Mac OS i.e. I se Continue reading >>

Ether - How To Unlockaccount Account Using Private Key Instead Of Password - Ethereum Stack Exchange

Ether - How To Unlockaccount Account Using Private Key Instead Of Password - Ethereum Stack Exchange

How to unlockAccount account using private key instead of password I am working with api + curl . And implementing custom api using this php library: below method is working fine for me for unlock before transaction: $ curl -X POST --data '{"jsonrpc":"2.0","method":"personal_unlockAccount","params":["0x7642b...", "password", 3600],"id":67}' But I want to unlock account using private key not by password. So is there any way to unlock account and do transaction using private key. use a raw transaction instead Badr Bellaj Nov 4 '17 at 23:31 @BadrBellaj can you please give example how can i use it with curl + json rpc Yogesh Karodiya Nov 6 '17 at 13:33 you can generate a raw transaction as described here or use myetherwallet to get the signed raw transaction and then call curl -X POST --data '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":[{raw_transaction}],"id":1}'// Result{ "id":1, "jsonrpc": "2.0", "result": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331"} besides as @yogesh has mentioned in his comment bellow Ethereumjs build for browser can be used to build the rawtransaction (in client side). I am using curl + json rpc so how can I achive it ? Yogesh Karodiya Nov 6 '17 at 14:20 no I don't want to use third party like myetherwallet so I am looking solution for generate raw_transaction by api Yogesh Karodiya Nov 7 '17 at 3:30 in my answer i have referenced a blog post explaining how to do it using some Apis medium.com/blockchain-musings/ Badr Bellaj Nov 7 '17 at 9:44 these are js library so how can I connect with php code. Yogesh Karodiya Nov 7 '17 at 10:09 You don't need to unlock your account if you know your private key. The reason is that transactions are signed using your private key, and unlocking your account is needed to obtain Continue reading >>

How Do I Backup My Ether Accounts?

How Do I Backup My Ether Accounts?

I want to backup my accounts onto a USB or other external device for safe-keeping. How can I do that? To backup your wallet you will need to make a copy of the key file(s) located in your ethereum directory. The file should look something like this: UTC--2015-09-18T14-07-57.023663538Z--da78c8721e4ede42cf488304551eb596dd5f93e23 I've suggested just saving the keystore contents, but you can of course backup the entire /ethereum directory; note, however, that this includes the chaindata files, and that's over 2Gb at the moment. To import saved wallet files, simply copy them into the keystore directory of your system. Presale versions will end in the *.json extension, but they will be recognized by the ethereum client. Don't forget that the keystore files are still protected by a password. linagee Jan 20 '16 at 20:30 To clarify, is it is the combination of your key file, and your knowledge of your password that constitutes your wallet. I just want to be absolutely certain before transferring Ether off exchange. That is to say with my key file and password, I could install Geth on a new computer, transfer my key file on a USB stick, and have access to my 'account'/Ether? Thomas Clowes Feb 3 '16 at 17:40 Yes for each key file, you need the password for it. Before deleting any key files, one should test the recovery process using small amounts of Ether. eth Feb 5 '16 at 23:42 So the only thing I need to save for a full backup of my wallets are the files in ~/.ethereum/keystore - is that correct? Paul Preibisch Apr 1 '16 at 3:15 Continue reading >>

Nanopool | Ethereum | Help

Nanopool | Ethereum | Help

YOUR_ETH/ETC_ADDRESS - your valid eth address YOUR_WORKER - simple short worker name (like worker01). Optional. YOUR_EMAIL - your email address for notifications. Optional. Don`t forget to set wallet, worker and email address to correct values. You must use failovers. If you want to enable Nanopool's failover servers, add these lines to epools.txt and change your wallet, worker and email address to correct values: POOL: eth-eu1.nanopool.org:9999, WALLET: YOUR_ETH_WALLET.YOUR_WORKER/YOUR_EMAIL, PSW: x, WORKER: , ESM: 0, ALLPOOLS: 0 POOL: eth-eu2.nanopool.org:9999, WALLET: YOUR_ETH_WALLET.YOUR_WORKER/YOUR_EMAIL, PSW: x, WORKER: , ESM: 0, ALLPOOLS: 0 POOL: eth-us-east1.nanopool.org:9999, WALLET: YOUR_ETH_WALLET.YOUR_WORKER/YOUR_EMAIL, PSW: x, WORKER: , ESM: 0, ALLPOOLS: 0 POOL: eth-us-west1.nanopool.org:9999, WALLET: YOUR_ETH_WALLET.YOUR_WORKER/YOUR_EMAIL, PSW: x, WORKER: , ESM: 0, ALLPOOLS: 0 POOL: eth-asia1.nanopool.org:9999, WALLET: YOUR_ETH_WALLET.YOUR_WORKER/YOUR_EMAIL, PSW: x, WORKER: , ESM: 0, ALLPOOLS: 0 Don`t forget to set wallet, worker and email address for Ethereum to correct values. Dual miner supports mining Ethereum/Ethereum Classic and SiaCoin/PascalCoin at the same time. To control second algorithm intensity use -dcri option. Claymore miner takes additional 1% fee(2% for dual mode). More information about Claymore Dual Miner configuration can be found on bitcointalk.org YOUR_ETH/ETC_ADDRESS - your valid eth address YOUR_WORKER - simple short worker name (like worker01). Optional. YOUR_EMAIL - your email address for notifications. Optional. Don`t forget to set wallet, worker and email address to correct values. You must use failovers. If you want to enable Nanopool's failover servers, add these lines to epools.txt and change your wallet, worker and email a Continue reading >>

Web3.eth.accounts Web3.js 1.0.0 Documentation

Web3.eth.accounts Web3.js 1.0.0 Documentation

tx - Object: The transaction object as follows: nonce - String: (optional) The nonce to use when signing this transaction. Default will use web3.eth.getTransactionCount() . chainId - String: (optional) The chain id to use when signing this transaction. Default will use web3.eth.net.getId() . to - String: (optional) The recevier of the transaction, can be empty when deploying a contract. data - String: (optional) The call data of the transaction, can be empty for simple value transfers. value - String: (optional) The value of the transaction in wei. gas - String: The gas provided by the transaction. gasPrice - String: (optional) The gas price set by this transaction, if empty, it will use web3.eth.gasPrice() privateKey - String: The private key to sign with. callback - Function: (optional) Optional callback, returns an error object as first parameter and the result as second. Promise|Object returning Object: The signed data RLP encoded transaction, or if returnSignature is true the signature values as follows: messageHash - String: The hash of the given message. r - String: First 32 bytes of the signature s - String: Next 32 bytes of the signature rawTransaction - String: The RLP encoded transaction, ready to be send using web3.eth.sendSignedTransaction . Continue reading >>

Account Types, Gas, And Transactions

Account Types, Gas, And Transactions

code execution is triggered by transactions or messages (calls) received from other contracts. when executed- perform operations of arbitrary complexity (Turing completeness)- manipulate its own persistent storage, i.e., can have its own permanent state- can call other contracts All action on the Ethereum block chain is set in motion by transactions fired from externally owned accounts. Every time a contract account receives a transaction, its code is executed as instructed by the input parameters sent as part of the transaction. The contract code is executed by the Ethereum Virtual Machine on each node participating in the network as part of their verification of new blocks. This execution needs to be completely deterministic, its only context is the position of the block on the blockchain and all data available.The blocks on the blockchain represent units of time, the blockchain itself is a temporal dimension and represents the entire history of states at the discrete time points designated by the blocks on the chain. All ether balances and values are denominated in units of wei: 1 ether is 1e18 wei. Contracts in Ethereum should not be seen as something that should be fulfilled or complied with; rather, they are more like autonomous agents that live inside of the Ethereum execution environment, always executing a specific piece of code when poked by a message or transaction, and having direct control over their own ether balance and their own key/value store to store their permanent state. The term transaction is used in Ethereum to refer to the signed data package that stores a message to be sent from an externally owned account to another account on the blockchain. a signature identifying the sender and proving their intention to send the message via the blockchain Continue reading >>

Managing Your Accounts

Managing Your Accounts

Geth 1.7 will reorganize the current set of commands and flags. This will gradually be merged into master and eventually shipped in 1.7. See for documentation this page. If you lose the password you use to encrypt your account, you will not be able to access that account.Repeat: It is NOT possible to access your account without a password and there is no forgot my password option here. Do not forget it. Note: the key file name naming convention changed as of 0.9.36. This document is meant to reflect accurate information on accounts as used by the frontier release. The ethereum CLI geth provides account management via the account subcommand: Manage accounts lets you create new accounts, list all existing accounts, import a private key into a new account, migrate to newest key format and change your password. It supports interactive mode, when you are prompted for password as well as non-interactive mode where passwords are supplied via a given password file. Non-interactive mode is only meant for scripted use on test networks or known safe environments. Make sure you remember the password you gave when creating a new account (with new, update or import). Without it you are not able to unlock your account. Note that exporting your key in unencrypted format is NOT supported. Keys are stored under /keystore. Make sure you backup your keys regularly! See DATADIR backup & restore for more information.The newest format of the keyfiles is: UTC---.The order of accounts when listing, is lexicographic, but as a consequence of the timespamp format, it is actually order of creation It is safe to transfer the entire directory or the individual keys therein between ethereum nodes. Note that in case you are adding keys to your node from a different nod Continue reading >>

What's The Difference Between Accounts And Wallets In Mist?

What's The Difference Between Accounts And Wallets In Mist?

What's the difference between Accounts and Wallets in Mist? In Mist, there are some addresses listed as accounts, and some listed as wallets. What's the difference? Which should I use? And why do I need Ether to create a Wallet? I just want to point out that since this post, the names display in Mist are: ACCOUNTS and WALLET CONTRACTS. Everything in this post that talks about "Wallets" applies to "Wallet Contracts". tayvano Feb 25 '16 at 17:07 Accounts are the most basic way to store Ether. They are simple public/private keypairs, which you use to sign transactions. You don't need to do anything to "register" an account with the network, just generate one and send some ether to it. Wallets are smart-contracts that allow for advanced features such as transaction logging, multisig, withdrawal limits, and more. In order to create a wallet, you need to deploy the contract to the blockchain, which requires ether. You need to make sure you keep track not only of the keys required to access the wallet, but also the wallet address. Unlike with accounts, wallet addresses are not very easily derivable from the private key (although it's not the end of the world if you lose the wallet address, you can use a block explorer to find what contracts you've created recently). Technically you can recover the address from just the account that created it and the nonce of the transaction, but that's a hassle. tl;dr: Start with an account, get some Ether, then create a wallet and store your ETH there >>create a wallet and store your ETH there<< So, if one has no need for for advanced wallet features (ie just want to store eth) it is ok to leave eth on an account as opposed to a wallet? user257 Jan 21 '16 at 23:00 Yes. Accounts are perfectly safe, and easier to back up, and just generally s Continue reading >>

Myetherwallet.com

Myetherwallet.com

Ledger / TREZOR / Digital Bitbox : Use your hardware wallet . Your device * is * your wallet. MetaMask Connect via your MetaMask Extension . So easy! Keys stay in MetaMask, not on a phishing site! Try it today. Jaxx / imToken Use your Mnemonic Phrase to access your account. Mist / Geth / Parity: Use your Keystore File (UTC / JSON) to access your account. **Do not lose it!** It cannot be recovered if you lose it. **Do not share it!** Your funds will be stolen if you use this file on a malicious/phishing site. **Make a backup!** Secure it like the millions of dollars it may one day be worth. **If you do not reveal your bid, you will not be refunded.** You will unlock your account, enter the Bid Amount, and the Secret Phrase. In the event that two parties bid exactly the same amount, the first bid revealed will win. Once the auction has ended (after 5 days / 120 hours), the winner needs to finalize the auction in order to claim their new name. The winner will be refunded the difference between their bid and the next-highest bid. If you are the only bidder, you will refunded all but 0.01 ETH. The auction for this registrar is a blind auction, and is described in EIP162 . Basically, no one can see *anything* during the auction. Be safe & secure: We highly recommend that you read our guide on How to Prevent Loss & Theft for some recommendations on how to be proactive about your security. Always backup your keys: MyEtherWallet.com & MyEtherWallet CX are not "web wallets". You do not create an account or give us your funds to hold onto. No data leaves your computer / your browser. We make it easy for you to create, save, and access your information and interact with the blockchain. We are not responsible for any loss: Ethereum, MyEtherWallet.com & MyEtherWallet CX, and some of Continue reading >>

Install The Command Line Tools

Install The Command Line Tools

Command line tools for the Ethereum Network These are tools for blockchain developers. The command line tools will allow you to connect your server to or run your application on the Ethereum blockchain or your own private blockchain. For security purposes , three independent implementations were created for Ethereum. The clients have almost identical functionality, so the one you pick is left to personal choice on platform, language and what your planned use is for the network. If you are building a business that needs to have maximum uptime guarantees to the Ethereum network, we recommend that you run at least one instance of both clients to ensure reliability. The Go implementation is called Geth. Geth has been audited for security and will be the future basis for the enduser-facing Mist Browser, so if you have experience with web development and are interested in building frontends for dapps, you should experiment with Geth. Install Homebrew and make sure it's up to date: Then use these commands to install ethereum: brew tap ethereum/ethereumbrew install ethereum For more, see the full documentation on Mac OSX Geth Download the latest stable binary , extract it, download the zip file, extract geth.exe from zip, open a command terminal and type: chdir open geth.exe For more, see the full documentation on Windows Geth sudo apt-get install software-properties-commonsudo add-apt-repository -y ppa:ethereum/ethereumsudo apt-get updatesudo apt-get install ethereum For other environments and more instruction, see the full documentation on Geth The C++ implementation is simply called Eth. If you want added security by running two different implementations in parallel or are serious about GPU mining, then the C++ "Eth" client is for you. Install Homebrew and then make sure it 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 >>

Go Ethereum - Account Is Locked. How To Unlock It Using Json-rpc? - Ethereum Stack Exchange

Go Ethereum - Account Is Locked. How To Unlock It Using Json-rpc? - Ethereum Stack Exchange

When trying to send a transaction through json-rpc interface on a geth node (version 1.4.10-stable-5f55d95a, running on testnet) using eth_sendTransaction I got this error message: I have tried to unlock the account using the following command: geth --testnet --exec "personal.unlockAccount(eth.accounts[0], password, 3600)" attach true Fatal: Unable to attach to remote geth: invalid endpoint Trying to unlock as explained in how to unlock the account with geth? geth --testnet --unlock 0x3b877e80b... --password password Fatal: Could not open database: resource temporarily unavailable Another option to unlock account according to previous URL is using the Geth interactive Javascript console. But how do I launch such console? I've seen someone is having same problem on code -32000 message: account is locked but any command of the kind Is it possible to unlock accounts directly through json-rpc interface anyhow? Why geth is not allowing me to unlock my ethereum account? Why "invalid endpoint"? Continue reading >>

Go Ethereum - How To Import A Plain Private Key Into Geth Or Mist? - Ethereum Stack Exchange

Go Ethereum - How To Import A Plain Private Key Into Geth Or Mist? - Ethereum Stack Exchange

How to import a plain private key into geth or Mist? This is such a basic question, but I can not figure out how to import a plain, unencrypted private key into geth or mist? I tried geth account import 7[......]bla but it seems this command is always looking for an unencrypted keyfile. Paste the key into a text file, save it to disk and use the path to that file with geth account import. Here are some example Windows instructions that might help: Paste key into notepad without any extra characters or quotations Save the file as nothing_special_delete_me.txt at C:\ Run the command, geth account import C:\nothing_special_delete_me.txt After successful import, delete the file at C:\nothing_special_delete_me.txt If you do not have geth installed already, do the following steps after step 3, and the continue to step 4: Inside the Command Prompt, type the following command to go to the folder containing your Geth.exe file:cd c:\Ethereum-Wallet-win64-0-7-3\resources\node\geth (insert your correct path there) I am getting Fatal: keyfile must be given as argument while doing the same. PS: I am running on linux macine. Prashant Prabhakar Singh Oct 10 '16 at 9:02 Use the following command in the geth console web3.personal.importRawKey("","") By default web3.js doesn't include the personal methods. See ethereum.stackexchange.com/questions/1413/ for more info Tjaden Hess Nov 14 '16 at 16:01 Mist has no way to import via GUI, so you need to import using command line (geth). It will show up in your Mist immediately. Paste key into TextEdit without any extra characters or quotations Save the file as nothing_special_delete_me.txt to your Desktop "Paste the key into a text file" ... how can I see my private key before copy/paste it somewhere? In the Mist there is no optio Continue reading >>

How To Create An Ethereum Account

How To Create An Ethereum Account

Today, well be learning about Ethereum accounts and the math behind creating one. To interact with Ethereum in any meaningful way, you need to have a user account. The simplest way to create an account on Ethereum is by using the Mist Ethereum wallet , which is an application that allows you to manage and interact with multiple Ethereum accounts. Launching the application will sync to the black chain, meaning it download the entire blockchain data to the blockchain, which can take upwards of 100 gigabytes, so be warned. When you first launch the application, it will walk you through creating an account and setting a password for it. Its very important that you never forget this password to maintain access to the account, there is no forgot your password option. Your new account then shows up in the wallet section of the app and it has a balance of zero. Clicking on the account will give us more details about it and provide some options for putting some real ether into it. The main thing to note is the public address, which you will share with other people. Another way to create an account is via the command line. If you download the Go Ethereum Client of GETH, can simply invoke GETH account new to create an account. This will prompt you to enter a password which again you should never forget and at the end it prints out the public address of your new account. You can create as many accounts as you like and you can view them all by typing GETH Account List. Note that this also shows the account we created in Ethereum Wallet. Another interesting thing to note is that we dont even have to be connected to the blockchain or even the internet to create an account. It can happen entirely offline. How is this possible? We know what we need to generate a cryptographic key pair Continue reading >>

Accounts - Should I Always Put 0x At The Start Of Ethereum Addresses? - Ethereum Stack Exchange

Accounts - Should I Always Put 0x At The Start Of Ethereum Addresses? - Ethereum Stack Exchange

Should I always put 0x at the start of Ethereum addresses? Should I always put 0x at the start of Ethereum addresses?Sending ether to addresses without 0x seem to work perfectly fine. when sending to an address, do you include the "0x" before the rest of the number? The address in my coinbase starts with 0x, then the rest of the receiving address. However my wallet file i created with geth doesn't have the 0x in the name. This question feels a bit engineered, to improve its quality can you give some more context in the question itself in what context this question occurs? Joris Bontje Jan 24 '16 at 21:23 But is it a zero or letter O ? Chipper Fawkes Mar 3 at 19:56 @ChipperFawkes It's a zero. eth Mar 4 at 20:22 Yes but the 0x should already be there. You should not be typing addresses in manually because they currently do not have checksums and mistakes can be costly: more details here specifically be "careful to always include the "0x" on the front of the raw ones (which you should be doing anyways)". When transferring any large amounts, don't forget to test with a small amount first. Similarly, if you are copying+pasting and the 0x isn't already there (maybe some blockchain explorers don't have the 0x), be careful if you add the "0x". With Ethereum ICAP addresses, the 0x should not be added. Continue reading >>

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