Bitcoin: A Peer-to-Peer Electronic Cash System
The paper that started everything, and still the best nine pages in the field. It proposes electronic cash that needs no bank: transactions are broadcast to a network, timestamped into a chain of hash-linked blocks, and secured by proof-of-work so that rewriting history requires redoing the work. It solves the “double-spend” problem — spending the same digital coin twice — without any trusted party.
Why it still matters: every custody decision we make traces back to this paper's model — confirmations as probabilistic finality, the longest-chain rule, and why a deposit under few confirmations is not yet yours. If you read one document before trading, read this one.
Read at bitcoin.org →