#中国投资者涌向印尼 Bitcoin (BTC) is a peer-to-peer cryptocurrency designed to serve as a medium of exchange independent of any central authority. BTC can be transferred in a secure, verifiable, and immutable manner as electronic cash.

BTC was launched in 2009 and is the "first virtual digital currency to solve the double-spending problem" by timestamping transactions before broadcasting the transaction information to all nodes in the Bitcoin network. The Bitcoin protocol provides a solution to the Byzantine fault tolerance problem through the blockchain network structure, a concept originally 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 not been verified.

The Bitcoin protocol uses a SHA-256d-based proof-of-work (PoW) algorithm 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 is continuously decreasing. To prevent fluctuations in congestion time, the network's block difficulty is readjusted based on the congestion time 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 enhances functionality as a solution for network scalability.