Definition
The genesis block is the very first block in a blockchain. It serves as the starting point of the chain’s record of transactions and data. All later blocks trace their history back to this initial block. The genesis block is typically defined and fixed when a blockchain network is created and cannot be replaced or changed.
In Simple Terms
The genesis block is like the first page of a blockchain’s record book. It is the original block from which all other blocks follow. Without this first block, the rest of the blockchain would have nothing to connect back to or build on.
Context and Usage
The term “genesis block” is commonly used when describing how a blockchain begins or when referring to the origin of a specific network. In discussions about blockchain design, documentation, or technical specifications, the genesis block marks the official launch point of the chain’s data structure and is a key reference for the network’s initial state.