#加密市场回调 Bitcoin (BTC) is a peer-to-peer cryptocurrency designed to serve as a means of exchange independent of any central authority. BTC can be transferred as electronic cash in a secure, verifiable, and immutable manner.

BTC was launched in 2009 as the "first virtual digital currency to solve the double-spending problem" by timestamping transaction information before broadcasting it to all nodes in the Bitcoin network. The Bitcoin protocol provides a solution to the Byzantine fault tolerance problem through blockchain network architecture, a concept initially created by Stuart Haber and W. Scott Stornetta in 1991.

The Bitcoin white paper was published in 2008 by an individual or group under the pseudonym "Satoshi Nakamoto", whose true identity has yet to be verified.

The Bitcoin protocol uses a proof-of-work (PoW) algorithm based on SHA-256d to achieve network consensus. Its target block time is 10 minutes, with a maximum supply of 21 million tokens, and the rate of token generation decreases over time. To prevent fluctuations in congestion times, the network's block difficulty is adjusted based on an algorithm that considers the congestion times of the past 2016 blocks.

The maximum block size is 1 megabyte, and the Bitcoin protocol simultaneously supports a multi-layer infrastructure for Lightning Network payment channels, as well as Segregated Witness, which is a soft fork that increases functionality as a solution for network scalability.