Great write up.
Two additional thought:
  • As the buyer you may want to buy a counterfeit testing pen. They are relatively cheap and great EDC tool in this situation.
  • If onchain transaction, may want to confirm ahead of time number of confirmed blocks needed for confirmation.
As the buyer of cash? (i.e., paying with bitcoin? )
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Do you know how to detect a bleached bill that has been re-printed as a $100 ?
Your pen says it is legit.
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It would be missing a prominent blue holographic stripe running through the paper.
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No, I don't
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