This is pretty near:

Detect breaches with Canary credit cards!

TL;DR;

Today we’re releasing a new Canarytoken type: actual credit cards!

1. Head over to canarytokens.org;
2. We give you a valid credit card (number, expiration, and CVC);
3. If anyone ever attempts to use that card you’ll be notified.

https://blog.thinkst.com/2023/01/swipe-right-on-our-new-credit-card-tokens.html

Swipe right on our new credit card tokens!

Thinkst Thoughts
@lojikil Every major credit card already does this and have years of security experience in the industry. This doesn't seem all that useful.
@peter_weyand I apologize, but I’m not aware of another system that allows users to generate cards that they can place in databases and other locations for the sole purposes of alerting them to misuse; can you share some of those orgs?