# Quiz 28 #### Let's apply what you have learned so far to a specific scenario. Choose the most correct response (choose ALL that apply). You are tasked with verifying a signed message from a client to confirm their ownership of a specific BSV address. The client has provided the original message, the signed message, and their BSV address. During the verification process, you find that none of the candidate public keys derived from the signature match the provided address. What should you do next? * [x] Double-check that the original message has not been altered before verification. * [x] Confirm with the client that the signed message was generated using the private key corresponding to the provided address. * [ ] Assume the client’s address is incorrect and proceed with the verification using a different address. * [ ] Modify the signed message to match the provided address. **Note to Learners** In Bitcoin SV, message verification ensures that the signed message corresponds to the original message and the provided address. If the verification fails, it is important to confirm that the original message has not been altered and that the client used the correct private key to generate the signature. Modifying the signed message or assuming the address is incorrect would compromise the integrity of the verification process. To learn more about it, you can follow the course [BSV and Digital Signatures](https://bsvblockchain.360learning.com/course/play/68de2a96a0926cd44a3f378d) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://hub.bsvblockchain.org/higher-learning/bsv-academy/bitcoin-primitives-digital-signatures/quiz/quiz-28.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.