Monetising an API by simply emailing public keys

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Keeping aside the actual service being rendered, what I want to draw attention to is the monetisation model. It’s almost unusually simple in its execution, which is exactly why I think it deserves some discussion.The idea is straightforward: I maintain a public-key whitelist. Consumers generate a key pair and send me their public key by email. That’s it.Of course, this approach does place limits on the kinds of interactions or access patterns I can support, but in principle it works.Still, the simplicity makes me cautious. When a solution feels this low-hanging, it tends to be one of two things: either it’s so straightforward that no one bothers to talk about it, or the pitfalls are signific

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