I think the most complex is to make the consensus of the network, the way of mining (proof of work for example) the block acceptance rules and the entire ecosystem, the blockchain itself is just a "database".
Distributed systems enthusiast, currently dabbling in AI and writing my own DL framework for Javascript - Catniff: https://github.com/nguyenphuminh/catniff
I think the most complex is to make the consensus of the network, the way of mining (proof of work for example) the block acceptance rules and the entire ecosystem, the blockchain itself is just a "database".
indeed!