September 2019
Beginner to intermediate
540 pages
13h 3m
English
Content preview from Learn Ethereum
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Further reading on uncle nodes
Uncles are also referred to as ommer to be more gender neutral. The concept of uncles is closely related to orphans in blockchain. What are orphans? When a block is mined, this information regarding the new block will be shared across the entire network. But the news about the new block doesn't reach every block at the same time. There is a scenario where a block is solved by two or more miners at the same block height.
Let's explain this with the following diagram. When the miner solved block B, miner C didn't know it had been solved. C continues to solve block B. Block B ends up being solved more than once. The red block, B, becomes an orphan block, and even though it is a valid block, it won't be part of ...
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