Bitcoin core import private key

. Typing this directly in a bash terminal will leave your wallet passphrase directly in the bash history but there are a couple of techniques you can use to avoid this. Simply add a space before the command:

Another alternative is to use a bash variable:

Import Private key(s) [ edit ]

The last command unlocked your wallet temporarily for 120 seconds, during which time you must import your private keys. Since private keys can be as important as your passphrase, you may want to use the same techniques as above to prevent their being recorded in bash history (bash variable or space before the command):

The importing process is now started. Bitcoind will rescan the entire block data to ensure this key has not been used before. This process will take from one to two minutes, depending on your CPU performance. DO NOT abort it before finishing!

To avoid rescanning run the following.

If no errors occurs, the import is a success and Bitcoin-QT users will be able to see the new address in the GUI immediately. If you need to import more keys, just repeat the instructions above. There is currently no command to import a batch of private keys so you will need to wait a minute or two for each key to be imported.

Cleaning up [ edit ]

This will lock your wallet again (so you don’t have to wait for timeout)

These commands will clear the passphrase and private key from memory if you used the read technique. If you started bitcoind, you will need to stop it before Bitcoin-QT will start again:

Deleting Keys [ edit ]

At some point, you may wish to delete private keys from a wallet.dat file but as of version v0.6.0 of Bitcoin-QT/bitcoind, there is no RPC method available for this purpose [2] .

Another ways [ edit ]

Using Blockchain.info [ edit ]

As of August 2012, possibly the easiest way to import a private key is using Blockchain.info’s My Wallet service. When successully imported through the «Import/Export» screen, the bitcoins assigned to a private key can be immediately sent to any Bitcoin address.

Using BIPS [ edit ]

As of August 2013, BIPS allows for easy import of private key using Paper Wallet — Import. User can choose to type in the private key manually or scan a QR code containing the private key using the camera. The user must wait 6 confirmations for access to the funds, and system is based on batch importation.

Using Mycelium [ edit ]

Steps described are with the following settings:

• Export mode enabled
• Aggregated view disabled

Partial spend from cold storage [ edit ]

Use this function if you would like to keep some funds on the paper wallet.

1. Download Mycelium from the Android Play Store or through iTunes.
2. Press the menu button and select «Cold Storage»
3. Scan in private key
4. Select your destination address
5. Select the amount
   1. Press the blue currency tag at the top to toggle currency.
6. Send!

After spending, the private key in memory is destroyed so the paper private key remains somewhat secure. Despite this, best practice is to immediately send the remaining balance to a paper wallet that was generated offline.

Import key from a paper wallet [ edit ]

Use this function if you would like to import a private key so all funds are immediately available for spending.

1. Download MyCelium from the Android Play Store or through iTunes.
2. Key Management
3. Press the blue ‘+’ symbol
4. Scan in private key

After importing this paper private key, you might consider destroying the original so it cannot be found and your funds stolen. Alternatively, you can keep it safe to be used as an offline backup.

Using bitcoind [ edit ]

If you have Version 7 or later it is now trival. See: How to import private keys v7+

Источник

Help:How to import private keys in Bitcoin Core 0.7+

This page contains sample addresses and/or private keys. Do not send bitcoins to or import any sample keys; you will lose your money.

Before reading this page, users should note that messing with ECDSA private keys is very dangerous and can result in losing bitcoins, even long after the import. It is recommended that outside of self-generated vanity addresses, users should never import (or export) private keys. [1] [2]

Contents

Backup Your Wallet

Although this process is well tested and used you should always take another backup of your wallet.dat file before starting.

Open Debug Window

Then go to menu: /Help/Debug Window

and click on the tab — Console.

Unlock your wallet

If your wallet is encrypted (I hope it is!) you must unlock it. If not just skip this step.

To do this just type into the box at the bottom:

You need the quotes if there is a space in your phrase else there is no need for them. The 600 means your wallet is unlocked for 10 minutes (600 seconds).

Run Import Command in Debug Window

In the console at the very bottom is a text entry box. In here enter:

The quotes are only needed if you want a space in the label.

You now have to be patient. On a fast PC it takes 2 minutes to import, and during this time it looks like you application has hung. After waiting a few minutes you will see:

If you want import multiple private keys add false at the end like so:

Do not forget to add the blank label.

for all keys but the last, and then remove the false to allow the rescan. [3]

You are now done. But always best to check it worked.

Check Key Imported OK

Once Imported you can check that you have the address by closing the Debug window and going back to your address book.

Источник

How to import private keys

Before reading this page, users should note that messing with ECDSA private keys is very dangerous and can result in losing bitcoins, even long after the import. It is recommended that outside of self-generated vanity addresses, users should never import (or export) private keys. [1] [2]

Contents

Using Blockchain.info

As of August 2012, possibly the easiest way to import a private key is using Blockchain.info’s My Wallet service. When successully imported through the «Import/Export» screen, the bitcoins assigned to a private key can be immediately sent to any Bitcoin address. It is extremely risky and not recommended to use Blockchain.info or any online third-party service to import private keys, because they can steal your BitCoins if they have the keys. It’s best to import them using bitcoind as described below.

Using BIPS

As of August 2013, BIPS allows for easy import of private key using Paper Wallet — Import. User can choose to type in the private key manually or scan a QR code containing the private key using the camera. The user must wait 6 confirmations for access to the funds, and system is based on batch importation. It is extremely risky and not recommended to use BIPS or any online third-party service to import private keys, because they can steal your BitCoins if they have the keys. It’s best to import them using bitcoind as described below.

Using Mycelium

Steps described are with the following settings:

• Export mode enabled
• Aggregated view disabled

Partial spend from cold storage

Use this function if you would like to keep some funds on the paper wallet.

1. Download Mycelium from the Android Play Store or through iTunes.
2. Press the menu button and select «Cold Storage»
3. Scan in private key
4. Select your destination address
5. Select the amount
   1. Press the blue currency tag at the top to toggle currency.
6. Send!

After spending, the private key in memory is destroyed so the paper private key remains somewhat secure. Despite this, best practice is to immediately send the remaining balance to a paper wallet that was generated offline.

Import key from a paper wallet

Use this function if you would like to import a private key so all funds are immediately available for spending.

1. Download Mycelium from the Android Play Store or through iTunes.
2. Key Management
3. Press the blue ‘+’ symbol
4. Scan in private key

After importing this paper private key, you might consider destroying the original so it cannot be found and your funds stolen. Alternatively, you can keep it safe to be used as an offline backup.

Using bitcoind

If you have Version 7 or later it is now trival. See: How to import private keys v7+

If you are using Cold storage, a Paper wallet or generating vanity addresses you may have a need to import a Private key. Since Bitcoin-QT/bitcoind v0.6.0, you can import private keys using built-in RPC command importprivkey. Before v0.6.0, you needed to rely on third-party wallet.dat manipulation tool such as Pywallet.

This article describes how to import a private key through the RPC API of bitcoind, which is a topic for advanced users.

Note that importing a key to bitcoind and/or Bitcoin-Qt may be dangerous and is not recommended unless you understand the full details of how it works

Start Bitcoin client

Unlike third-party wallet.dat manipulation tools such as Pywallet, you do not have to close the Bitcoin client before proceeding. Instead, you need to start the bitcoind server.

• Close bitcoin-qt and start bitcoind -daemon in Terminal Emulator. The version of bitcoind MUST be the same as bitcoin-qt!

Bitcoin-QT does not enable its RPC interface by default. To enable it:

• Close Bitcoin-QT and restart it with bitcoin-qt -server.

Unlock your wallet

If you have an encrypted wallet (recommended), you need to unlock it temporarily before importing private keys. The RPC command for unlocking an encrypted wallet is walletpassphrase