# 202.5 Lesson - verifiability

**Screen:** verifiability

**Headline:** The good must be easy to quickly identify and verify as authentic

**Reward:** 3

**Text:** It is important for a good store of value to be easily verifiable as authentic. This increases confidence in trade and the likelihood that a transaction will be completed.

Both fiat currencies and gold are generally easy to verify, but they are not foolproof. Counterfeit bills and gold-plated tungsten have been used to deceive people in the past.

On the other hand, the use of cryptography makes verification very easy for bitcoin and makes counterfeiting impossible.

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## QUIZ

**Question:** How can bitcoin be verified?

**Answer:** By using cryptographic signatures

**Feedback:** Congratulations! You are correct. Bitcoin can be verified with mathematical certainty using cryptographic signatures

**Correct:** true

**Answer:** By checking for gold-plated tungsten

**Feedback:** Sorry, but that's not quite right. Better luck next time

**Correct:** false

**Answer:** By checking for features on banknotes to prevent counterfeiting

**Feedback:** Wrong! Bitcoin is purely digital and doesn't utilize banknotes. Try again!

**Correct:** false

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