Bitcoin is a free open source peer-to-peer electronic cash system that
is completely decentralized, without the need for a central server or
trusted parties. Users hold the crypto keys to their own money and
transact directly with each other, with the help of a P2P network to
check for double-spending.
For versions of Ubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf), as well as Ubuntu flavours that don’t include snap by default, snap can be installed from the Ubuntu Software Centre by searching for snapd.
Alternatively, snapd can be installed from the command line:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install bitcoin-core, simply use the following command: