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 submitted the edition to the Art Catalogue, an online art store can then choose to sell your print for a 50/50 share of the profit.
All edition numbers will be tracked from one source to ensure duplicates are not sold. This information is stored on creatuvehub. When the edition is sold out, the customer will be unable to buy the print.