Admin: Created page with "{{#seo: |title=Ethereum FAQ – Go commands, wallet and mining manuals – zaoniaoWiki |keywords=ethereum, faq, go, commands, tutorial, manual, wallet |description=This articl..."

2019-05-19T09:35:33Z

Created page with "{{#seo: |title=Ethereum FAQ – Go commands, wallet and mining manuals – zaoniaoWiki |keywords=ethereum, faq, go, commands, tutorial, manual, wallet |description=This articl..."

New page

{{#seo:
|title=Ethereum FAQ – Go commands, wallet and mining manuals – zaoniaoWiki
|keywords=ethereum, faq, go, commands, tutorial, manual, wallet
|description=This article helps users of Ethereum cryptocurrency to get a kind of tutorial with Go commands for an effective usage of ETH. There are the descriptions of manual work with wallets, mining, keys and frequent questions.
}}
<amp/>
[[File:ethereum_faq.png|400px|right|FAQ Ethereum – Go tutorial]]
This article helps users of [[Ethereum]] cryptocurrency to get a kind of tutorial with Go commands for an effective usage of ETH. There are the descriptions of manual work with wallets, mining, keys and frequent questions.

==Ethereum Go – Key Formats==
===Private Key===
The format of your [[private key]] is <code>3a1076bf45ab87712ad64ccb3b10217737f7faacbf2872e88fdd9a537d8fe266</code>.

===Account or Address===
The format of your account (which is generated from your public key) is <code>0xC2D7CF95645D33006175B78989035C7c9061d3F9</code>.

Note that there is a lowercase version <code>0xc2d7cf95645d33006175b78989035c7c9061d3f9</code> and a partially uppercase version <code>0xC2D7CF95645D33006175B78989035C7c9061d3F9</code>.

The partially uppercase version has a [[checksum]] to verify the [[address]]. See [https://github.com/ethereum/EIPs/issues/55 EIP55 - Yet another cool checksum address encoding]

===UTC JSON Keystore File===
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 (<code>geth</code>)===
You can generate a new [[Ethereum]] account by executing <code>[[GETH|geth]] account new</code> if you already have the <code>[[GETH|geth]]</code> Ethereum [[node]] [[software]] installed:
$ geth account new
Your new account is locked with a password. Please give a password. Do not forget this password.
Passphrase: xxxxxxxx
Repeat passphrase: xxxxxxxx
Address: {4e6cf0ed2d8bbf1fbbc9f2a100602ceba4bf1319}

A UTC--{year}-{month}--{account} encrypted account file is created (formatted):
$ more ~/Library/Ethereum/keystore/UTC--2017-03-03T13-24-07.826187674Z--4e6cf0ed2d8bbf1fbbc9f2a100602ceba4bf1319
{"address":"4e6cf0ed2d8bbf1fbbc9f2a100602ceba4bf1319",
"crypto":{
"cipher":"aes-128-ctr",
"ciphertext":"7a0629096348faa0ae8f71a09c613279d80323a400699658305a43f34279d56d",
"cipherparams":{
"iv":"003d6c6e3d77255d70d72088be034d03"
},
"kdf":"scrypt",
"kdfparams":{
"dklen":32,
"n":262144,
"p":1,
"r":8,
"salt":"8325cad5dcc8e70163d3cf42b43ad97bc3383db53418b084f6650573f7cabe1e"
},
"mac":"a627309776c6bc20b9476869c589c858f6bdf64a58881bff01476829555cf8b7"
},
"id":"ba2e1b9a-f140-4940-a1c1-f9dddedc0e1b",
"version":3
}

Here your account or address is 0x4e6cf0ed2d8bbf1fbbc9f2a100602ceba4bf1319. The contents of the file also includes an encrypted version of your private key.

You can also generate a new account from within your running <code>geth</code> console:

> personal.newAccount("insert a passphrase for this new account here")

<code>geth</code> will respond with the address of your newly created account. Again, you must retain the passphrase used to create the account.

===How To Create A New Account In Ethereum Wallet / Mist===
In Ethereum Wallet / Mist, select the menu item ''Accounts'' -> ''New Account'' to see the following screen. Enter a password AND save this password in a secure location. Click on '''OK''', repeat the same password and confirm:

[[File:ext_38dKJsdjh_EthereumWalletCreateAccount.png]]

You will see a new account appear in your [[Ethereum Wallet]] / Mist screen:

[[File:ext_38dKJsdjh_EthereumWalletCreateAccountNewAccount.png]]

Select the menu ''Accounts'' -> ''[[Backup]]'' -> ''Accounts'' to display the directory containing your newly create account JSON file with a name beginning with '''UTC-'''. Back this file (and any other existing files in the same directory) in a secure location.

See [[Network Ports, Files And Directories]] for the location of the directories and files on your computer.

===How To Create A New Account In MyEtherWallet===
'''IMPORTANT''':
* '''Save your JSON file and password AND/OR your private key to be able to transfer funds from your new account'''
* '''Check that you are using the correct URL as there are similarly named phishing sites'''

Navigate to [https://www.myetherwallet.com] and you will see the following screen:

[[File:ext_38dKJsdjh_ext_38dKJsdjh_MEWGenerateWallet.png|800px]]

Enter a password in the following screen. You will have to remember this password, so save it in a secure location. Click on '''Generate Wallet''':

[[File:ext_38dKJsdjh_ext_38dKJsdjh_MEWGenerateWallet.png|800px]]

Your new wallet has been generated. Click on '''Download''' and download the file onto your computer. Back this file up in a secure location. Click on '''I understand. Continue''':

[[File:ext_38dKJsdjh_MEWGenerateWalletDownloadJSON.png|800px]]

Following is content of a sample downloaded JSON file with the name '''UTC--2017-03-26T11-31-51.429z--dd4eccd742d17887f50c27aebb14d99bfd7571b6''':

{"version":3,
"id":"25d4a9e3-3a1e-4b77-8995-17627b00031a",
"address":"dd4eccd742d17887f50c27aebb14d99bfd7571b6",
"Crypto":{
"ciphertext":"b819f1769169beaf7e6dcdb578dad519eccb86cf34a139c3707b450caa1383ba",
"cipherparams":{
"iv":"e85f34bb37ccb102287ade3660b1a32f"
},
"cipher":"aes-128-ctr",
"kdf":"scrypt",
"kdfparams":{
"dklen":32,
"salt":"67f458a5fa32647f294ff113464dfefdced9e0dd129c061bfa655ec53759a849",
"n":1024,
"r":8,
"p":1
},
"mac":"35054e01efd959cbafe412411540a311e26ed70bad60b8eb26a8d2f9d76304fb"
}
}

In the following screen, you will see the sample private key '''85e3d0b2bb3011d00a139e5cdc4ae13144962752d6af7916bf2bd271a240094e'''. Save this private key in a secure location.

You can either use the JSON file with the password '''AND/OR''' this private key to unlock your account. You can print a [[paper wallet]] from the following screen:

[[File:ext_38dKJsdjh_MEWGenerateWalletPKPrint.png|800px]]

In the following screen, you upload the JSON file you just created, to test the new new account:

[[File:ext_38dKJsdjh_MEWGenerateWalletUnlockWallet.png|800px]]

Enter your password and click '''Unlock''':

[[File:ext_38dKJsdjh_MEWGenerateWalletSelectJSON.png|800px]]

You will see your account (sample '''0xdd4eccd742d17887f50c27aebb14d99bfd7571b6''') in the following screen. You can provide this address publicly to receive funds into your newly created account.

[[File:ext_38dKJsdjh_MEWGenerateWalletViewWallet.png|800px]]

==How To Import Private Keys==
===How To Import A Private Key Into Go Ethereum (<code>geth</code>) ===
To import a private key using <code>geth</code>:

# Create a text file containing your private key
$ more privatekey
3a1076bf45ab87712ad64ccb3b10217737f7faacbf2872e88fdd9a537d8fe266
# Execute geth to import your private key
$ geth account import privatekey
Your new account is locked with a password. Please give a password. Do not forget this password.
Passphrase:
Repeat passphrase:
Address: {c2d7cf95645d33006175b78989035c7c9061d3f9}
# Remember to delete the text file containing your private key
$ rm privateky

===How To Import A Private Key Into Ethereum Wallet / Mist===
You cannot import a private key directly into Ethereum Wallet / Mist. Instead, you will have to find the <code>geth</code> executable that is downloaded by Ethereum Wallet / Mist and use the procedure above.

See [[Network Ports, Files And Directories]] for the location of the <code>geth</code> executable.

===How To Import A Private Key Into MyEtherWallet===
* Navigate to https://www.myetherwallet.com/#send-transaction . '''Check that you are using the correct URL as there are similarly named phishing sites.'''. Click on '''Private Key''', paste your private key into the text box and click '''Unlock''':
*:[[File:ext_38dKJsdjh_MEWSendEtherTokensPrivateKey.png|800px]]
* The following screen shows an account with a zero balance.
*:[[File:ext_38dKJsdjh_MEWSendEtherTokens.png|800px]]
* If you have a non-zero ether balance, you can send [[ethers]] to another account.
* If you have a non-zero [[token]] balance AND you have a non-zero ether balance, you can send [[tokens]] to another account.

==How To Import JSON Files==
===How To Import A JSON File Into Ethereum Wallet / Mist===
In Ethereum Wallet / Mist, select the menu ''Accounts'' -> ''Backup'' -> ''Accounts''. Ethereum Wallet / Mist will open up your file manager showing your '''keystore''' directory.

Copy your JSON file into this directory and your new account will be displayed in the Ethereum Wallet / Mist Wallets tab shortly.

==Ethereum FAQ (Frequently Asked Questions)==
===What is the difference between a private key, public key and account (or address)?===
See [http://ethereum.stackexchange.com/questions/3542/how-are-ethereum-addresses-generated/3619#3619 How are ethereum addresses generated?] and [https://kobl.one/blog/create-full-ethereum-keypair-and-address/ Create full Ethereum wallet, keypair and address].

===Are account (or address) generated uniquely?===
See [https://ethereum.stackexchange.com/questions/4299/account-uniqueness-guaranteed Account uniqueness guaranteed?]

===Can the private key be brute forced?===
See [https://www.reddit.com/r/ethereum/comments/605f5c/public_key_vulnerable_to_brute_force_in_the_future/df3mton/ Public key vulnerable to brute force in the future?]

===Are tokens stored with the same account (or address) as for normal ethers?===
Yes. You store your [[ERC20]] tokens in the same account you use for storing ethers. You can store ERC20 tokens in an account with 0 ethers, but when you want to transfer the tokens from your account, you will need some ethers to pay for the gas required to transfer your tokens.

===I have lost my password for my JSON file, and I don't have my private key. What can I do?===
From [https://ethereum.stackexchange.com/questions/97/how-can-i-recover-or-reset-a-lost-wallet-password How can I recover or reset a lost wallet password?], you can try using the '''pyethrecover''' tool from https://github.com/burjorjee/pyethrecover to brute force your password. You will need to provide some password hints for the application to attempt finding your password.

===How can I extract my private key from my JSON file?===
The easiest way is to use the View Wallet Info tab in https://www.myetherwallet.com, select the '''Keystore File (UTC / JSON)''' option,
select your JSON file, enter your password and click '''Unlock'''. Your private key will be displayed in the next page.

== See also ==
* [[Blockchain]]
* [[ICO]]
* [[Smart contract]]
* [[Ethereum Classic]]
* [[Waves Platform]]
* [[Cryptocurrency]]

==Sources==
http://theethereum.wiki/

Ethereum FAQ - Revision history

Admin: Created page with "{{#seo: |title=Ethereum FAQ – Go commands, wallet and mining manuals – zaoniaoWiki |keywords=ethereum, faq, go, commands, tutorial, manual, wallet |description=This articl..."