# Quiz 49 #### What makes Bitcoin's blockchain a reliable method for recording and verifying information? (choose ALL that apply). * [x] Blockchain records are immutable and cannot be altered * [x] The transparency of the blockchain allows anyone to verify transactions * [ ] Blockchain data can be modified by trusted third parties * [ ] Verification of blockchain data requires centralized authorities **Note to Learners** Bitcoin's blockchain offers a reliable method for recording and verifying information. The immutable nature of blockchain records ensures the integrity of information, as once data is recorded, it cannot be altered. The transparency of the blockchain allows anyone to verify transactions and data, promoting accountability. To learn more about it, you can follow the course [Empower Your Future: Master Digital Sovereignty with Bitcoin](https://bsvblockchain.360learning.com/course/play/68b158b46ae60960986393f5) --- # 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-as-historical-phenomenon/quiz-bitcoin-as-historical-phenomenon/quiz-49.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.