maybe the "pay to" address is generated separately for each order - if so, it would be very simple to see who paid and who did not.

https://twitter.com/ColdkeyCards/status/1296843493445267456

who has not yet ordered a 3rd halvin ck-card (copper), still has the chance to get one - don't think, just order

Until now still Only 8 left in stock. One of the best looking art wallet cards ever minted. Serious collector should get before it is all gone forever. I am looking for a silver one. I know it will be hard to get the gold one because  collectors who got gold one most likely have all 3 as a set.

https://www.coldkey.eu/product/3rd-bitcoin-halving-copper-variant/

Only 4 left in stock 

Sold out!

How many did you swipe 🧐😁

Thanks for bringing this us.
I suspended that sale.

I am still processing everything.
Still a bit overwhelmed and finalizing everything.

Given the potential for Coldkey, it could definitely not run on our previous bases.
Now, finishing everything up and we'll be unfolding a better workflow to serve you better.

Everybody whose order has been pending will be served and I will get back to each of you at some point in the near term.
Thank you for your comprehension and very sorry for the confusion.