The problem deMark solves:

• How can human creator protect their image creations? More specifically, how can they prove that an image is originally created/posted by them and not by somebody else?
• Some existing solutions (And their problems)
  • Copyright the image (Not affordable)
  • Adding a watermark to the image (Can easily be reversed by image editing tools)
  • Sign the image using your private key and publish the public key and the signature openly (Can non-tech people do this easily? Hell No!)
• DeMark solves this by making generating a proof of source of images:
  • Cheap
  • Immutable
  • Easy

How to create a proof?

1. Upload the Image to IPFS
2. Create a Soul Bound Token containing metadata:

• IPFS CID
• Uploader Address
• Timestamp

3. Watermark the SBT transaction data in the image (Steganography)

How to verify a proof?

1. Retrieve transaction data from the image to verify by decoding the steganographic information
2. Remove the steganography data
3. Get the IPFS CID of the image to verify
4. Check if

   cid_in_transaction == curr_img_cid

5. Verified!