Verifier

A verifier is a tool or system that checks the validity or correctness of something, such as a digital signature, identity, or data. In the digital world, verifiers confirm whether information is genuine, untampered, and trustworthy. For example, when you sign into an online account, the system verifies your identity. Similarly, in security protocols, verifiers authenticate actions or data to ensure they haven't been altered or forged. Overall, verifiers play a crucial role in maintaining integrity and trustworthiness in digital interactions.