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For clarification, this appears to be a cryptography-challenge coin, not a cryptography challenge-coin.
by jameshart 4y ago
For clarification, this appears to be a cryptography-challenge coin, not a cryptography challenge-coin.
- goldenkey 4y agoTo elaborate, a challenge-coin would be awarded for achievement or entry into a prestigious group. The coin is usually decorative but contains no challenges in itself. In this case, the coin contains challenges, and anyone can purchase it - rather than it being awarded.