Historical retrospective · Bitcoin
Bitcoin’s genesis block began the public blockchain
The first Bitcoin block, created in January 2009, established the initial ledger history and introduced the system’s block subsidy.
Bitcoin Core’s consensus rules define how nodes validate blocks and transactions, allowing independent participants to converge on a valid chain.
The launch turned the white-paper design into running software and a peer-to-peer network rather than a proposal alone.
The genesis block is a useful starting point for understanding Bitcoin’s conservative evolution: changes must preserve shared validation rules across a distributed user base.
Primary source
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