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BIBLIOGRAPHY

Wikipedia「EURion constellation」「Superdollar」

Wikipedia (according to the sources of each article)

Claims Supported by This Source

  1. Since around 1996, image software and scanners detect a pattern of small yellow, green, and orange circles to prevent duplication.
  2. The Supernote is a high-quality counterfeit 100-dollar bill; the U.S. government alleges North Korean involvement ("Superdollar").

How to read the verification levels. 'Read' means the material was read in its entirety. 'Bibliography and abstract confirmed' means the bibliographic information and abstract were verified. 'Via course material' means the source was referenced through the main text of a book or a country's monetary history. The text hash is the SHA-256 of the main text from the original source page, excluding tags and whitespace, used to detect if the material has been altered.