A new block is created by finding a hash below a target threshold through brute force.
— Satoshi Nakamoto
If a majority of CPU power is controlled by honest nodes, the honest chain will grow the fastest and outpace any competing chains.
— Satoshi Nakamoto
The cryptographic hash function secures the integrity of the blockchain.
— Satoshi Nakamoto
Simplified Payment Verification (SPV) allows payment verification without running a full network node.
— Satoshi Nakamoto
Bitcoin nodes validate transactions by checking signatures and the unspent transaction outputs.
— Satoshi Nakamoto
