# Helius Webhooks & Sweeping For a privacy router to work seamlessly, it needs to detect on-chain deposits the exact second they happen. To achieve this, VeerTx integrates enterprise-grade infrastructure from Helius to handle real-time network monitoring and automated fund sweeping for both SOL and USDC. ### Enterprise-Grade Detection When a user generates a VeerTx payment link, a unique, temporary deposit address is created. Because Solana moves at the speed of light, we cannot rely on slow, manual indexers to check if a user has paid. Instead, we use Helius Webhooks. * **Real-Time Monitoring:** Helius actively listens to the Solana blockchain for us. * **Instant Triggers:** The moment a SOL or USDC transaction hits your specific temporary deposit address, Helius fires a secure webhook to our backend. * **Zero Missed Payments:** This ensures that even during times of massive network congestion on Solana, your deposit is instantly recognized and credited. ### The Sweeping Mechanism Once the Helius webhook confirms the deposit is valid, the VeerTx sweeping protocol automatically kicks in. * Isolation: The SOL or USDC sits briefly in the temporary, isolated deposit wallet. * The Sweep: Our backend securely signs a transaction to move the exact deposited amount (minus standard network fees) directly into the main Privacy Pool. * Preparation for Output: Once the sweep is complete, the temporary wallet is abandoned, and the funds are mixed into the pool liquidity, ready to be distributed to the receiver. --- # 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://veertx.gitbook.io/veertx-docs/how-it-works/helius-webhooks-and-sweeping.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.