Double Hash Solution - Applied Cryptography

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  1. Udacity
  2. cryptography
  3. ciphers
  4. encryption
  5. key exchange
  6. public keys
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0:23 "that would require changing the target more frequently"

I don't think that's true. Simply using half the current target and changing it at the current frequency would have the same effect as hashing twice.

I thought I read somewhere once a better reason for hashing twice. I'm wondering if it may have been related to reducing the impact of the use of quantum computers on the security of the blockchain.

WhiteHenny