When visualized, this structured process resembles an upside-down tree. In the diagram below, "T" designates a transaction, "H" a hash. Note that the image is highly simplified; a block can ...

the application code passes that password through a hashing function and stores the result in the database. When the user wants to authenticate later, the process is repeated and the result is ...

It's hard to visualize just how difficult the hashing process is: finding a valid hash ... uses a simple round and repeats it 64 times. The diagram below shows one round, which takes eight 4 ...