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What’s the Status of the Harriet Tubman $20 Bill?

(Image shown is one artist’s imagining of the Harriet Tubman banknote.) Every February, Americans celebrate Presidents Day as well as Black History Month. This seems...

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Blockchain technology

In 2008, a white paper titled ‘Bitcoin: A Peer-to-Peer Electronic Cash System’ mysteriously appeared under the pseudonym Satoshi Nakamoto. Said paper explained the infrastructure...

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Optical machine authentication of security documents

In the first part of this publication, we discussed the latest two major international standardisation activities on the topic of optical machine authentication of...

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