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The underlying concepts and game theory of mining.
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Why dont' nodes change the block version number when the nonce overflows?
After computing 4 billion nonces, the miner is supposed to update the merkle root.
Why don't they choose a new nonce and assign it to the block version number and begin again?
It would save time and …
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Why dont' nodes change the block version number when the nonce overflows?
Miners do do this, but not so simply. It is actually a recent controversial issue called ASICBoost. The version number is assigned different values as part of this algorithm.
It's a bit more complex …