> but got changed to a less-than check for performance reasons.
Performance as in "it takes less time to verify the PoW," or something else? Because the "leading zeros" and "less than target" approaches would both take a negligible amount of time.
Performance as in "it takes less time to verify the PoW," or something else? Because the "leading zeros" and "less than target" approaches would both take a negligible amount of time.
[0] https://github.com/bitcoin/bitcoin/blob/e071a3f6c06f41068ad1...
btw, the whitepaper probably used "number of leading zeros" because that's what Hashcash does.