Blockchain is an innovation to keep data moving and transfer, direct, secure, and work without a focus monitor.
Through the increase, the blockchain forms a database that contains the historical background of large projects of deals that have taken place between its customers since its inception. This database is safe and recommended: it is shared by its various clients, without go-betweens, allowing everyone to verify the legitimacy of the chain.
There are open blockchains, open to all, and private blockchains, the entry of which is limited to a specific number of users.
Therefore, the open blockchain can be compared to an unknown, factory, open record. As the mathematician Jean-Paul Delahaye composes, you need to visualize “a colossal scratchpad, accessible to all openly and for free, which anyone can compose, but is difficult to eliminate and cannot be destroyed.”