The blockchain is a hot new topic in the technology due to the rise of various cryptocurrencies, Bitcoin being a most prominent example. How does it work? What advantages does it give? What problems do they solve? What problems can be solved that way? I want you to dive with me into the immutable world of blocks where I will explain everything, from a simple hash, through Merkle trees, up to implementing your own blockchain. https://twitter.com/tmmx https://conf2018.phpsrbija.rs/ https://phpsrbija.rs/ https://twitter.com/search?q=phpsrb&src=typd