Why Choose This Project?

In today’s digital era, intellectual property theft and document tampering are major concerns. Traditional watermarking systems can be altered or removed. By integrating blockchain immutability with digital watermarking, this project ensures that ownership, authenticity, and integrity of documents (PDF, Word, Images) are permanently verifiable.

This makes it ideal for:

• Legal documents

• Academic certificates

• Copyrighted content

What You Get in This Project

A secure platform where users can:

• Upload documents

• Embed digital watermarks (visible or invisible)

• Register watermark proofs on the blockchain

• Allow others to verify authenticity of documents against blockchain records

Technology Stack

Key Features

How Blockchain Watermarking Works

1. User Uploads a Document
   → System generates a unique watermark (text/logo or invisible digital signature).

2. Hash Generation
   → A SHA-256 hash of the watermarked document is created.

3. Blockchain Registration
   → Hash + Metadata (owner, timestamp, document ID) are stored on blockchain.

4. Verification Flow

   • User uploads/scans a document

   • System computes hash

   • Compares with blockchain record

   • Match → Authentic Document

   • Mismatch → Tampered Document

Security Features

• Immutability → Blockchain prevents alteration/deletion of proofs

• Tamper Detection → Even a 1-bit change invalidates verification

• User Authentication → Only authorized users can upload/register documents

• Watermark Stealth → Invisible watermarking resists cropping/removal attacks

• Transparency → Open blockchain verification without central authority