How to add missing cost basis info to Coinbase (if you don't have Cointracker)

video1.0<iframe src="https://www.loom.com/embed/cdd431c7f12a4399b4a88b940ac01306" frameborder="0" width="1662" height="1246" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>12461662Loomhttps://www.loom.com12461662https://cdn.loom.com/sessions/thumbnails/cdd431c7f12a4399b4a88b940ac01306-acb65d6d5a9c31ed.gif328.384 How to add missing cost basis info to Coinbase (if you don't have Cointracker)