Smart Verify - A Secure Online Seller Verification Portal

A Faceless Online Seller verification portal, where the sellers willingness is captured digitally along with AI Sentimental analysis, Digital Signature, to prevent coercion in signing/selling Property

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Inspiration

In India, property sales can be legally challenged if there's any suspicion of coercion, even years later. Traditional online registration portals lack a mechanism to verify the seller's willingness. This gap inspired the development of SmartVerify — a platform that ensures secure, transparent, and tamper-proof seller consent using video verification, AI sentiment analysis, and blockchain storage.

What it does

SmartVerify is a secure online seller verification portal that:

  • Captures a video-based consent from the seller.
  • Analyzes the video using AI for emotion/sentiment detection to flag signs of coercion or stress.
  • Integrates digital signatures for consent form validation.
  • Stores proofs on a AWS S3 to ensure immutability and transparency.
  • Offers a faceless, real-time registration process for sellers.

How we built it

  • Frontend: Built with React.js and Material UI for a user-friendly interface.
  • Video Capture: WebRTC used to record real-time seller consent.
  • Backend: Express.js handles API requests, sentiment analysis, and digital signature integration.
  • Sentiment Analysis: DeepFace AI model detects emotions in the video to ensure seller willingness.
  • E-signatures: Integrated via SignNow API to securely capture digital consent.
  • Database & Storage: MongoDB stores user details; AWS S3 stores recorded videos and signed documents.

Architecture Diagram

https://i.ibb.co/ns1nWCGp/Archipng.png

Challenges we ran into

  • Ensuring real-time video processing without latency.
  • Integrating AI emotion detection effectively with backend processes.
  • Handling secure and legally valid e-signatures through third-party APIs.
  • Blockchain integration for secure and verifiable consent storage.
  • Building a scalable backend to handle sensitive data securely and efficiently.

Accomplishments that we're proud of

  • Developed a fully functional prototype that brings together AI, blockchain, and secure web development.
  • Successfully implemented a "willingness score" system through AI-based sentiment analysis.
  • Created a tamper-proof consent verification process that can withstand legal scrutiny.
  • Built an efficient and user-friendly UI that supports faceless verification with maximum security.

What we learned

  • Gained in-depth experience with WebRTC, AWS, and sentiment analysis models.
  • Understood the legal and ethical importance of free consent in property transactions.
  • Learned how to integrate third-party APIs (like SignNow) securely into web applications.
  • Strengthened our skills in full-stack development and working with real-world verification systems.

What's next for Smart Verify - A Secure Online Seller Verification Portal

  • Integration with government registration portals like TNREGINET for official adoption.
  • Enhanced emotion detection accuracy using more advanced deep learning models.
  • Adding multi-language support to make the platform accessible across India.
  • Launching a mobile app version to increase accessibility.
  • ** Use Blockchain:** Ethereum ledger to store file hashes and ensure tamper-proof verification via smart contracts.
  • Collaborating with legal and real estate experts to standardize the verification process nationwide.

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