# How is blockchain used in TNG Identity? Within the framework of TNG Identity, blockchain functions as a highly secure decentralized data registry. Its primary purpose lies in creating distinct user and organizational Decentralized Identifiers (DiD), ensuring their resilience against tampering. Each DiD is paired with an associated document, securely stored on the blockchain, bolstering the credibility and inviolability of identity information. The utilization of a public blockchain as our data register confers several advantages. The transparent and decentralized nature of the blockchain enhances the security of identity data, fostering trust in the verification process. The distributed architecture ensures that no single entity has undue control, mitigating the risk of manipulation or unauthorized access. This robust and reliable foundation exemplifies the benefits of leveraging a public blockchain as a secure and tamper-resistant repository for managing digital identities within the TNG Identity ecosystem. --- # 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://docs.teranode.group/tng-identity-documentation/faqs-help/help-and-faqs/how-is-blockchain-used-in-tng-identity.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.