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myarbrough@oreilly.com 2014-11-05 09:14:16 -08:00
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@ -72,7 +72,7 @@ The first block in the blockchain is called the _genesis block_ and was created
Every node always starts with a blockchain of at least one block because the genesis block is statically encoded within the bitcoin client software, such that it cannot be altered. Every node always "knows" the genesis block's hash and structure, the fixed time it was created, and even the single transaction within. Thus, every node has the starting point for the blockchain, a secure "root" from which to build a trusted blockchain. Every node always starts with a blockchain of at least one block because the genesis block is statically encoded within the bitcoin client software, such that it cannot be altered. Every node always "knows" the genesis block's hash and structure, the fixed time it was created, and even the single transaction within. Thus, every node has the starting point for the blockchain, a secure "root" from which to build a trusted blockchain.
See the statically encoded genesis block inside the Bitcoin Core client, in https://github.com/bitcoin/bitcoin/blob/3955c3940eff83518c186facfec6f50545b5aab5/src/chainparams.cpp#L123[chainparams.cpp]. See the statically encoded genesis block inside the Bitcoin Core client, in http://bit.ly/1x6rcwP[chainparams.cpp].
The genesis block has the following identifier hash: +000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f+. You can search for that block hash in any block explorer website, such as blockchain.info, and you will find a page describing the contents of this block, with a URL containing that hash: The genesis block has the following identifier hash: +000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f+. You can search for that block hash in any block explorer website, such as blockchain.info, and you will find a page describing the contents of this block, with a URL containing that hash: