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Merge pull request #705 from rating89us/patch-2

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ch10: paralellism (the...the)
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Andreas M. Antonopoulos 2021-01-14 19:32:39 -06:00 committed by GitHub
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@ -792,7 +792,7 @@ image::images/mbc2_1003.png["Visualization of a blockchain fork event: two block
Let's assume, for example, that a miner Node X finds a Proof-of-Work solution for a block "triangle" that extends the blockchain, building on top of the parent block "star." Almost simultaneously, the miner Node Y who was also extending the chain from block "star" finds a solution for block "upside-down triangle," his candidate block. Now, there are two possible blocks; one we call "triangle," originating in Node X; and one we call "upside-down triangle," originating in Node Y. Both blocks are valid, both blocks contain a valid solution to the Proof-of-Work, and both blocks extend the same parent (block "star"). Both blocks likely contain most of the same transactions, with only perhaps a few differences in the order of transactions.
As the two blocks propagate, some nodes receive block "triangle" first and some receive block "upside-down triangle" first. As shown in <<fork3>>, the network splits into two different perspectives of the blockchain; one side topped with a triangle block, the other with the upside-down-triangle block.
As the two blocks propagate, some nodes receive block "triangle" first and some receive block "upside-down triangle" first. As shown in <<fork3>>, the network splits into two different perspectives of the blockchain; one side topped with the triangle block, the other with the upside-down-triangle block.
[[fork3]]
[role="smallersixty"]