Genesis Block
a.k.a. Block 0
The very first block of a blockchain, the one every later block traces back to.
In plain English
The very first block of a blockchain, the one every later block traces back to.
The genesis block is block number zero: the first page of a blockchain. It has no block before it, and every block since links back to it in one unbroken chain.
Bitcoin's genesis block was created by Satoshi Nakamoto on January 3, 2009. Hidden inside is a newspaper headline from that day about the British government preparing a second bank bailout. Most read it as a timestamp and a statement of why Bitcoin was built.
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