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When mining...;

a) Is the block header hash of the candidate block used

b) OR the block header hash of the previous block + noonce used?

If it is a), which I presume, is it then correct that the procedure is;

  • Write incremented noonce into the candidate block header
  • Calculate the hash, which thus changed bc of the updated noonce, of the candidate block header and check against the target.

I looked but did not find any other question that covers exactly this.

BOH
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  • Does this answer your question? [What exactly is Mining?](https://bitcoin.stackexchange.com/questions/148/what-exactly-is-mining) -- I've read answers there from which I believe a reader could see that your presumption is correct. – RedGrittyBrick Mar 20 '22 at 13:02
  • Much appreciated, RedGrittyBrick! I'll post a follow-up question I have over there instead. – BOH Mar 20 '22 at 15:37

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