Yes, you are able to sell your edition in multiple stores / sites at the same time and the numbers will be tracked accurately when using the creativehub Shopify app.
For example, if you have shared an image with permission to sell, the recipient can then choose to sell your print on his Shopify store for a 50/50 share of the profit.
Click here to learn how to share an image with permission to sell.
All edition numbers will be tracked from one source to ensure duplicates are not sold. This information is stored on creativehub. When the edition is sold out, the customer will be unable to buy the print.