# Security As a trusted RPC provider for write transactions on the Ethereum blockchain, our infrastructure is designed with transparency, reliability, and user protection in mind. We understand the importance of safeguarding your transactions, and we're committed to maintaining the highest levels of security. ### Immutable Transactions When you submit a transaction through Blink, we only handle **signed transactions**. This means that Blink can in no way alter or interfere with what the underlying transaction does. Once your transaction is signed with your private key, it is cryptographically sealed, and its integrity is assured. The transaction's content, including who it's sent to, what actions it will perform, and how much value is being transferred, is locked in and cannot be changed by Blink. ### Public Data Handling The data we receive at Blink is **public data**. Ethereum transactions that are sent to the public mempool are available for anyone to view. Blink facilitates getting your transaction on chain, ensuring efficient submission to the Ethereum blockchain without exposing any sensitive information. It is no different from sending the same transaction directly to the Ethereum network, except that Blink helps streamline the process. ### Transparency and Trust Our system is built on the foundation of blockchain transparency. Since Ethereum is an open and public network, every transaction and action taken is recorded immutably on the blockchain for anyone to audit. Blink operates within this framework, providing a secure, transparent method for you to interact with Ethereum. By using Blink, you're taking advantage of a reliable, secure infrastructure that is designed with trust in mind. We strive to ensure that your Ethereum interactions remain safe & secure. ### Third-Party Providers To support reliable performance across chains, Blink integrates with select third-party services for block building, transaction ordering, and RPC data delivery. Providers include, but are not limited to: Ethereum (Titan, Buildernet, Quasar), Solana (Jito), and BSC (Blockrazor, 48Club). --- # 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.blinklabs.xyz/blink/get-started/integration/security.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.