Blockchains are new distributed database systems. A blockchain stores transactions, but not on a central server. A copy of all transactions exists as a ledger on every computer connected to the blockchain network. This eliminates the need for trusted third-parties to process transactions. Watch the video for a clear explanation.
In 2015 Ethereum was launched. Ethereum is a general purpose computing platform with a built-in programming language allowing to build decentralized applications (DApps) that exist only on the blockchain. DApps rely on smart contracts, which are programs defining the internal logic and conditions required to carry out their tasks. Smart contracts are incorruptible, transparent and able to be combined to create complex systems. Such systems often are referred to as decentralized autonomous organizations (DAOs).
There are several reasons why QlickJob is built on the Ethereum blockchain. As it is a decentralized system, there is no single point of failure and not susceptible to the concentration of power in large organisations. It also eliminates unnecessary middlemen who take a percentage of the profits at every step along the the path of offering a job to the market to filling in a position. It also keeps a record of each transaction, allowing users to track the status of Qlickjob contracts. And because every DApp on the network can interact with any other, it could one day be possible, for instance, to trade labor for solar energy (or any other value). Blockchains are seen as the next step since we are able to visit webpages on the internet.