What is an example of does?

Excuse me, but I believe you might have a typographical error in your question. As a language construct, "does" is typically used as a verb, particularly in the third-person singular present tense of "do." It's not a noun or a concept that can directly have "examples." However, I'll interpret your question as asking for an instance where the verb "does" might be used in a sentence to demonstrate its usage. For instance, one could ask, "What does a blockchain do?" Here, "does" is being used to inquire about the function or actions of a blockchain. In this context, it serves as a verb, forming part of the interrogative sentence to elicit information about the capabilities or activities of blockchains. So, while "does" itself doesn't have "examples," it's frequently employed in sentences to inquire about the actions or properties of a given subject.