Blockchain import private key - ap.psicheebenessere.it

IMPORTANT wallet advice I think every user should know - don't get burned by not following these tips, it's important to use wallets in a SAFE way!

iOS, Android & Exchange wallets = NOT SECURE enough!

There are RISKS to storing your ETH in an iOS/Android wallet, and you are obligated to TEST YOUR WALLET if you used myetherwallet.com to generate your wallet (their wallets should work just fine but they even tell you to test your wallet before offloading to it). Also if you use freewallet I suggest REMOVING YOUR FUNDS FROM IT ASAP see here for why.
An example: Jax for iOS is a closed source wallet -- all iOS and Android wallets are compiled and sent to the app store. It is impossible to know what got inserted into there by the time you use it. For that reason I strongly encourage not keeping your ether in any iOS or Android wallet and also not keeping your ether in any exchange at. Both wallet apps and exchanges have been hacked or behaved dishonestly in the past and have stolen user bitcoin and ether. I believe the founder of jaxx has said as much as well - that his wallet is designed for convenience and not for large or long term storage!
you may think I am paranoid, however:
  1. here is an iOS wallet that just stole 8 million dollars from its users - this could happen to jaxx or any, any wallet you download from the app store
  2. here is a user who lost $50,000 because he generated a wallet at myetherwallet without first testing sending and receiving money
It is very important that you:
  1. generate a wallet from a source that you absolutely trust and that you
  2. store that wallet in a secure environment and that you
  3. test that wallet before sending all your ether to it.
If you search the sub you will discover some horror stories from folks who failed to follow through with these steps. They are not overly hard but are extremely important towards securing your investment.
FAILURE TO COMPLY with these pieces of advice may result in the absolute and total loss or inaccessibility of your ether, and in such a circumstance your ether is both non-recoverable and you are fully liable for the loss.

How to generate a wallet in a safe way: air gapped paper wallet

  1. get a USB stick and create a bootable version of ubuntu, there are many guides on how to do this. Here is one for Windows Users. Here is one for Mac users. Here is a video on YouTube for how to do it. By the end of this first step you should have a USB stick that you can boot Ubuntu from.
  2. download this website from here. Extract the contents of this zip to a folder on a flash drive. You can use the same flash drive that you just created for Ubuntu, just make a folder such as flashdrive/myetherwallet and stick the website contents in there
  3. You have to now boot your computer from the USB stick. Mac users can just insert the USB stick, hold option, power up their computer and then select "Ubuntu live cd" or "ubuntu". Windows users have to follow these steps with the usb stick inserted and then pick the usb stick from a list of boot options.
  4. at some point booting from the usb stick, select "live cd" or "try ubuntu before installing". NEVER EVER SETUP WIFI, UNPLUG YOUR INTERNET CORD IF YOU ARE WIRED IN!
  5. once ubuntu boots, find the flash drive in the file explorer with the website, and open up index.html
  6. think up a password (you absolutely shouldnt forget this) and click "generate wallet". Then click "download keystore file" and find the file that got downloaded and STICK THIS ON THE FLASH DRIVE - you absolutely shouldnt lose this!
  7. write down the private key that they give you. Write it on paper, double and triple check it. Copy it to a text file and save it onto the flash drive. You absolutely shouldnt lose this!
  8. you shouldnt print your wallet unless you can connect to a usb printer. Otherwise you would need network access to print. What you can do though is click on "print", cancel the print dialogue and then go to "file > save" and save the webpage on your flash disk.
  9. click next, select "Keystore File (UTC / JSON)" and then "select a file" and open the .json file you saved on the flash disk earlier
  10. you have now generated a wallet. Nice job. I highly suggest you now insert a second flash disk and copy EVERYTHING from the first one onto the second. Then store them in different places. The idea here is that you make several copies of your public and private key so you don't lose them.
  11. NEVER EVER PLUG THESE USB STICKS INTO ANOTHER COMPUTER AGAIN - only access these USB sticks from ubuntu, booting it up the same way you did in the steps above ^
  12. You should now try sending something small like 0.001 ETH to this new wallet, and then use http://etherscan.io to make sure the transfer goes through.
  13. You should now try sending 0.001 ETH out of your new wallet to make sure it works. You should only ever send money from this new wallet by booting Ubuntu up and sticking the USB sticks into your computer. From an online computer go here and put your new wallet's public address in, then click "generate information" and copy down gas price and nonce to a textfile on A NEW usb stick. Go back to your offline computer with ubuntu and open up index.html again and click "Send Offline" on the navigation at the top. Where it says "Step 2" insert the to address of your old wallet, and put 0.001 in for value, and then fill in gas price and nonce from the text file you saved on that new usb stick. Check the "keystore JSON" box and click "SELECT WALLET FILE" and give it the .json file you saved from step 6. It will now give you some long string of text. SAVE THIS TO THAT NEW USB STICK DONT REUSE THE ONE WITH THE .JSON FILE AND YOUR PRIVATE KEY! Stick this new USB stick into another computer, go here again, in the box labeled "signed transaction" paste that text you just saved in and click "send transaction". BOOM.
if this works then you now a) know your brand spanking new wallet works and b) know how to do a super secure offline transaction - hackers be damned you're pretty secure and safe now!

Hardware wallet

I believe an air gap generated paper wallet is the most secure approach, but if you want a hardware wallet I would read up on the Ledger and the TREZOR, although these are difficult to find right now due to large demand.
submitted by dont_forget_canada to ethtrader [link] [comments]

IMPORTANT safety advice for new users - know how to store your ETH safely so you don't lose it!

this is a repost from my old guide BUT we have a lot more new users so I thought it was important to re-iterate through this advice:
https://www.reddit.com/ethtradecomments/6h46qw/important_wallet_advice_i_think_every_user_should/

iOS, Android & Exchange wallets = NOT SECURE enough!

There are RISKS to storing your ETH in an iOS/Android wallet, and you are obligated to TEST YOUR WALLET if you used myetherwallet.com to generate your wallet (their wallets should work just fine but they even tell you to test your wallet before offloading to it). Also if you use freewallet I suggest REMOVING YOUR FUNDS FROM IT ASAP see here for why.
An example: Jax for iOS is a closed source wallet -- all iOS and Android wallets are compiled and sent to the app store. It is impossible to know what got inserted into there by the time you use it. For that reason I strongly encourage not keeping your ether in any iOS or Android wallet and also not keeping your ether in any exchange at. Both wallet apps and exchanges have been hacked or behaved dishonestly in the past and have stolen user bitcoin and ether. I believe the founder of jaxx has said as much as well - that his wallet is designed for convenience and not for large or long term storage!
you may think I am paranoid, however:
  1. here is an iOS wallet that just stole 8 million dollars from its users - this could happen to jaxx or any, any wallet you download from the app store
  2. here is a user who lost $50,000 because he generated a wallet at myetherwallet without first testing sending and receiving money
It is very important that you:
  1. generate a wallet from a source that you absolutely trust and that you
  2. store that wallet in a secure environment and that you
  3. test that wallet before sending all your ether to it.
If you search the sub you will discover some horror stories from folks who failed to follow through with these steps. They are not overly hard but are extremely important towards securing your investment.
FAILURE TO COMPLY with these pieces of advice may result in the absolute and total loss or inaccessibility of your ether, and in such a circumstance your ether is both non-recoverable and you are fully liable for the loss.

How to generate a wallet in a safe way: air gapped paper wallet

  1. get a USB stick and create a bootable version of ubuntu, there are many guides on how to do this. Here is one for Windows Users. Here is one for Mac users. Here is a video on YouTube for how to do it. By the end of this first step you should have a USB stick that you can boot Ubuntu from.
  2. download this website from here. Extract the contents of this zip to a folder on a flash drive. You can use the same flash drive that you just created for Ubuntu, just make a folder such as flashdrive/myetherwallet and stick the website contents in there
  3. You have to now boot your computer from the USB stick. Mac users can just insert the USB stick, hold option, power up their computer and then select "Ubuntu live cd" or "ubuntu". Windows users have to follow these steps with the usb stick inserted and then pick the usb stick from a list of boot options.
  4. at some point booting from the usb stick, select "live cd" or "try ubuntu before installing". NEVER EVER SETUP WIFI, UNPLUG YOUR INTERNET CORD IF YOU ARE WIRED IN!
  5. once ubuntu boots, find the flash drive in the file explorer with the website, and open up index.html
  6. think up a password (you absolutely shouldnt forget this) and click "generate wallet". Then click "download keystore file" and find the file that got downloaded and STICK THIS ON THE FLASH DRIVE - you absolutely shouldnt lose this!
  7. write down the private key that they give you. Write it on paper, double and triple check it. Copy it to a text file and save it onto the flash drive. You absolutely shouldnt lose this!
  8. you shouldnt print your wallet unless you can connect to a usb printer. Otherwise you would need network access to print. What you can do though is click on "print", cancel the print dialogue and then go to "file > save" and save the webpage on your flash disk.
  9. click next, select "Keystore File (UTC / JSON)" and then "select a file" and open the .json file you saved on the flash disk earlier
  10. you have now generated a wallet. Nice job. I highly suggest you now insert a second flash disk and copy EVERYTHING from the first one onto the second. Then store them in different places. The idea here is that you make several copies of your public and private key so you don't lose them.
  11. NEVER EVER PLUG THESE USB STICKS INTO ANOTHER COMPUTER AGAIN - only access these USB sticks from ubuntu, booting it up the same way you did in the steps above ^
  12. You should now try sending something small like 0.001 ETH to this new wallet, and then use http://etherscan.io to make sure the transfer goes through.
  13. You should now try sending 0.001 ETH out of your new wallet to make sure it works. You should only ever send money from this new wallet by booting Ubuntu up and sticking the USB sticks into your computer. From an online computer go here and put your new wallet's public address in, then click "generate information" and copy down gas price and nonce to a textfile on A NEW usb stick. Go back to your offline computer with ubuntu and open up index.html again and click "Send Offline" on the navigation at the top. Where it says "Step 2" insert the to address of your old wallet, and put 0.001 in for value, and then fill in gas price and nonce from the text file you saved on that new usb stick. Check the "keystore JSON" box and click "SELECT WALLET FILE" and give it the .json file you saved from step 6. It will now give you some long string of text. SAVE THIS TO THAT NEW USB STICK DONT REUSE THE ONE WITH THE .JSON FILE AND YOUR PRIVATE KEY! Stick this new USB stick into another computer, go here again, in the box labeled "signed transaction" paste that text you just saved in and click "send transaction". BOOM.
if this works then you now a) know your brand spanking new wallet works and b) know how to do a super secure offline transaction - hackers be damned you're pretty secure and safe now!

Hardware wallet

I believe an air gap generated paper wallet is the most secure approach, but if you want a hardware wallet I would read up on the Ledger and the TREZOR, although these are difficult to find right now due to large demand.
submitted by dont_forget_canada to ethtrader [link] [comments]

How to export private key on Blockchain info How to export private key of MetaMask Wallet how to add ssl certificate to java keystore [[ JKS ]] Getting your Private Keys from the Bitcoin Core wallet ... ACCESSING MYETHERWALLET USING PRIVATE KEY Part 2

Alternative option — import a wallet using a private key or JSON file. If you have an existing wallet address but you don’t have a mnemonic phrase, you can import your wallet address to ... If you sent the private key to anybody else you have fatally compromised it. It appears from the fact that they didn't return it that they didn't need it in the first place. In any case all you need to do now is import the renewed certificates back into the original JKS keystore which already has the private key. But you really need to re-key. As you can see Electrum supports different types of wallets. Just select “Import bitcoin addresses or private keys”. And then you paste in your private keys in the box that it displays on the next screen: Enter one private key per line. Electrum supports mini private keys and full sized keys in Wallet Import Format (WIF). I created a website and add bitcoin payment option on it, create a new wallet on the blockchain, I have an API key from blockchain.info and xpub key, but for the transaction, I need a “bitcoin Secret key”. I just want to know that, every key have is own private key, so if i extract the private or secret key and add in site admin panel so it works for all. I am confused, Easy import and export of keys would make it easier for trusted vendors to sell Bitcoin stored-value cards (USB sticks, mini CDs, etc) with a private key on them. The buyer then just imports the private key from the card. Easy import/export also addresses parts of issue #2

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How to export private key on Blockchain info

Bitcoin-Core: Import private key from old watch only address into non spendable wallet - Duration: 8:10. Bitcoin Daytrader 7,810 views NOTE!!!! Please do not share your PRIVATE KEYS/RECOVERY SEED/LOGIN DETAILS of your blockchain.info's wallet to anyone via comment or email. All WATCH ONLY ad... Bitcoin for Beginners 101,673 views. 4:33. How to send Tokens from Metamask to Exchange - Duration: 9:48. COINCADO 46,106 views. 9:48. Import MyEtherWallet (MEW) into MetaMask - Part 2 - Duration ... In this tutorial we are going to get our private keys from the bitcoin core wallet. This only works when you created the bitcoin address in the same wallet. ... How to Import Recovery Phrase Trust Wallet ... (Trust Wallet) & save to google drive using root explorer - Duration: 3:24. 0pulsa ... Extract Private Keys from Trust Wallet - works for Bitcoin ...

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