BEGINNER PATH / 02
In Bitcoin, the blockchain is the shared public transaction record that the network uses to agree which bitcoin has already been spent and which can still be spent.
People create and broadcast Bitcoin transactions.
Network participants check transactions against Bitcoin's rules.
Miners assemble valid transactions into candidate blocks.
A valid proof-of-work allows a new block to be proposed to the network.
Each block refers to the previous one, creating a chronological history.
WHY BLOCKS LINK / 03
Bitcoin's blockchain is not a secret bank database. Transactions and blocks can be independently verified by software following Bitcoin's consensus rules.
Blocks provide a chronological structure so the network can agree which transactions came before others.
When later blocks are added after the block containing your transaction, its confirmation count increases.
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