Chapter 3, Challenge 3

Coop vs. BitRey

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HoloCat Pool

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#1
You
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#2
Mining Maniacs
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#3
Coin Crunchers
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#4
Hash Hoppers

Something is not quite right yet.

Hash Hoppers, the one with the most hash power, is finding all your blocks but others find nothing.
The problem is that everyone is checking the same nonces while they’re mining. How can you better coordinate?
You decide to place a unique identifier in the “extraNonce” when preparing the block data for each of you to prevent duplicate efforts.