Guide Shows How to Add PDF Tamper Detection to Ruby on Rails Apps

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A technical integration guide published by htpbe.tech outlines how Ruby on Rails developers can add PDF tamper detection to their applications. The guide targets fintech and KYC workflows where forged bank statements, altered payslips, or doctored invoices may be uploaded by applicants. It explains that standard identity verification confirms a person's identity but does not check whether a submitted PDF was altered after the issuing institution generated it. The integration uses a two-step API flow — submitting a PDF URL and retrieving a verdict of intact, modified, or inconclusive — built around the Faraday HTTP client. The guide covers Rails 7.x and Ruby 3.x patterns including a service object, ActiveJob processing, typed error handling, and WebMock-based request specs.

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