Bitcoin is a type of digital currency invented by an anonymous person/group going by the name Satashi Nakamoto, in which public-key cryptography is used to regulate the generation of units of currency and verify the transfer of funds, operating independently of a central bank. The system is decentralized and works without a central repository or single administrator. All transactions are stored in a public ledger called the block chain.
The block chain is distributed over the bitcoin network; to independently verify the chain of ownership of any and every bitcoin amount, each network node stores its own copy of it. To use bitcoins one needs a so called bitcoin wallet. A wallet stores the information needed to transact bitcoins. Basically a wallet consists of two cryptographic keys, one public and one private. The public key is comparable to a bankaccount number which you can share to recieve funds. The private key is needed to access the funds stored in there. So always make sure to keep your private key backed up, safe and secure.
The original bitcoin wallet developed by Satoshi Nakamoto and maintained by the Bitcoin Development team. Bitcoin core is a fully fledged node of the bitcoin network. So it requires the whole blockchain to be downloaded to run, please note that at the moment the blockchain is 27.5Gb in size. You can install Bitcoin by adding the “Bitcoin” team PPA to your systems software sources.
To add the PPA and install Bitcoin open a terminal window (press Ctrl+Alt+T) and copy+paste the following lines:
sudo apt-add-repository ppa:bitcoin/bitcoin -y
sudo apt update && sudo apt install bitcoin-qt -y
After the installation you can close the terminal window, to start Bitcoin press the SuperKey and type: bitcoin
Syncing BitCoin core may take some time… enjoy waiting!
MultiBit is a secure, lightweight, java based, international Bitcoin wallet for indows, MacOS and Linux. MultiBit requires Java in order to run, if you already have Java installed you can skip the first part.
You can install Java by adding the Oracle Java (JDK) 6 / 7 / 8 Installer PPA to your systems software sources.To add the PPA and install Oracle Java 8 open a terminal window (press Ctrl+Alt+T) and copy+paste the following lines:
sudo add-apt-repository ppa:webupd8team/java -y
sudo apt update && sudo apt install oracle-java8-installer -y
When Java is installed you can close the terminal window.
MultiBit is a java based program so you don’t have to install it. All you have to do is to download and make the file executable. Download the jar file from the multibit website (https://multibit.org/releases/) and make the .jar file executable with the following command line in a terminal window:
chmod +x ~/Downloads/multibit*
Now the bitcoin wallet can be started using the following command line:
java -jar ~/Downloads/multibit*
Follow the steps given in the setup and when the setup is finished you can close the window. To start Multibit press the SuperKey and type: multibit
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