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CH12: mention BIP320-style header extension

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David A. Harding 2023-05-31 16:48:30 -10:00
parent 6613f367c4
commit cb15241574
1 changed files with 9 additions and 4 deletions
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@ -1778,10 +1778,15 @@ in the merkle tree, which means that any change in the coinbase script
causes the merkle root to change. Eight bytes of extra nonce, plus the 4
bytes of "standard" nonce allow miners to explore a total 2^96^ (8
followed by 28 zeros) possibilities _per second_ without having to
modify the timestamp. If, in the future, miners could run through all
these possibilities, they could then modify the timestamp. There is also
more space in the coinbase script for future expansion of the extra
nonce space.
modify the timestamp.
Another solution widely used today is to use up to 16 bits of the block
header versionbits field for mining, as described in BIP320. If each
piece of mining equimpent has its own coinbase transaction, this allows
an individual piece of mining equipment to perform up to 281 TH/s by
only making changes to the block header. This keeps mining equipment
and protocols simpler than incrementing the extranonce in the coinbase
transaction every 4 billion hashes.
[[mining_pools]]
==== Mining Pools