If I understand this
BB correctly then I believe the ecommerce store I developed and run for my website would qualify as "labor over the internet".
To describe my labor for this I built and maintain the whole website including the
e-commerce store where I
sell my
artwork (vessels),
chasing tools, and
jigsaw puzzles. I believe the labor of making and selling the
art and tools will fall under a different BB but the puzzles and general website work seems like it would fit here. This involves posting the "products", marketing through social media and various other venues, handling the sales with packing and shipping of the products.
I'm not quite sure how to provide proof I did the labor over the internet. Well, I can share an image of a page on my Shippo account where I purchase my shipping labels as potential proof I am doing the work. The fact that it is an ecommerce store means it has to be on the internet, and I linked to it above. I can also include an image of my current stock of puzzles. (As I type this they are currently still available if anyone wants one!)
For proof of payment I'll include a screen shot from my orders page that shows the sales totals for the different orders. I haven't tallied up just what is shown in the screen shot but you can see it is well over the $50 required for this BB.