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@ -22,13 +22,13 @@ blocks stacked on top of each other results in the use of terms such as
Each block Each block
within the blockchain is identified by a hash, generated using the within the blockchain is identified by a hash, generated using the
SHA256 cryptographic hash algorithm on the header of the block. Each SHA256 cryptographic hash algorithm on the header of the block. Each
block also commits to the previous block, known as the _parent_ block, block also commits to the previous block, known as ((("parent blocks")))the _parent_ block,
through the "previous block hash" field in the block header. through the "previous block hash" field in the block header.
The sequence of hashes linking each block to its parent creates a chain The sequence of hashes linking each block to its parent creates a chain
going back all the way to the first block ever created, known as the going back all the way to the first block ever created, known ((("genesis block")))as the
_genesis block_. _genesis block_.
Although a block has just one parent, it can have multiple Although a block has just one parent, it can have ((("child blocks")))multiple
children. Each of the children commits to the same parent block. children. Each of the children commits to the same parent block.
Multiple children arise during a blockchain "fork," a temporary Multiple children arise during a blockchain "fork," a temporary
situation that can occur when different blocks are discovered almost situation that can occur when different blocks are discovered almost