I am sure Ibotta would love that, too. For the number of offers redeemed at Walmart, it probably has the fewest issues.
Unfortunately, most receipts don't include a bar code to look up the receipt. The only other store that had this (that I know) was JoAnn Fabrics, but they left Ibotta.
Target has a bar code on their receipt, but I don't know if it would work with Ibotta. Walgreens and CVS also have a bar code on their receipt. If they could be scanned in Ibotta, it would be a great help to Ibotta users.