Proof-of-Authenticity system

Proof-of-Location

Our Proof-of-Location mechanism makes sure that we can verify with a high degree of certainty that the user leaving the review is actually at the location for a significant amount of time. It is also used as an anti-cheating mechanism. We use a combination of:

• Time-based validation: A user is only able to submit a review if they have been there for a significant amount of time, not just quickly hopping in to give a review

• Location verification based on the GPS information and Foursquare API

• Anti-spoofing protection by blocking the usage of the application on jailbroken devices

• Natural movement detection

• AI-powered picture interpretation

• Metadata analysis of uploaded pictures based on EXIF-data where we:

  • Verify the timestamps

  • Check the device name

  • Cross-check with other pictures uploaded in the past

  • Verify the GPS information

Proof-of-Personhood

• Use of biometrics when checking in or posting a review to ensure it's really you

• Verifying telephone number to add extra layer of unicity

• Integration with third party protocols to verify your personhood via your Solana wallet

Proof-of-Purchase

During the review process we allow users to take a picture of their bill.

With AI we scan the content, and verify if the purchase has been made at the right time, location and venue.

The EXIF data of the picture is also crossreferenced.