Secure Payment Endpoint with Automated Validation

This n8n workflow creates a secure payment processing endpoint that verifies and simulates cryptocurrency transactions via an API. It starts by listening for incoming webhook requests, then checks for the presence of a specific ‘x-payment’ header. If the header exists, it decodes and validates the base64-encoded payment details, ensuring the payload is formatted correctly and contains necessary signatures. Upon successful validation, it simulates the payment transaction using an external API and, if the simulation succeeds, automatically responds with a success message. If any validation fails, it provides detailed error responses, guiding the user to correct the request. This workflow is beneficial for developers or businesses accepting crypto payments, enabling automated validation and processing of transactions with minimal manual intervention.