DOI's allow Sci-Hub to function pretty well. One good example of how they have found a purpose to serve no one else was doing. DOI's also apply to datasets ie.

DOI's allow Sci-Hub to function pretty well. One good example of how they have found a purpose to serve no one else was doing. DOI's also apply to datasets ie. - https://www.ands.org.au/guides/doi https://www.ands.org.au/guides/doi DOI's can theoretically apply to paragraphs, sentences, words. Each having a different DOI. There's a lot to them. The in practice case for DOI's seems to be like a approximate hash function for things, with the location included. From memory retracted articles will have the same DOI, even though it will be different since it'll say it's retracted.