The problem BarterChain solves

1. People usually hesistate to order their desired products from unknown websites which appear way down the Google Result page, but have often no choice since the same product is out of stock on the mainstream websites. Our website aims to solve that issue by implementing blockchain smart contract so customers can order without any worry regarding legitimacy of the transaction.
2. To ensure privacy, security, and the elimination of a third party or intermediary.

Challenges we ran into

1. echoAR servers were down and we couldn't get the models working for half of the time.
2. modifying, deleting fies no longer required and adding changes on files already existing on the github repository was a huge pain.
3. Integrating the front-end to the back-end.
4. Connecting .js files to Smart Contract API.
5. Fetching data from the Smart Contract.
6. Uploading images to IPFS.