比特币白皮书于2008年10月31日在密码学邮件列表中发布。其软件后来于2009年1月9日正式上线。 

比特币现金成立于2017年8月1号

Bitcoin was created by a pseudonymous individual or group under the name Satoshi Nakamoto. To this day, Bitcoin’s creator remains unknown. 

一群企业和开发者对比特币网络规则的争执感到越来越厌倦，于是决定编写和发布改变该规则的代码。

BTC (Note: You may see BTC appear as XBT on other platforms)

BCH

Bitcoin is an open-source software that allows its global user base to manage a digital money supply outside the control of any government or central bank.

It was created in response to the 2008 global economic crisis as a means to combat inflation. In fact, the first mined block contained the message: “The Times 03/Jan/2009 Chancellor on brink of second bailout for banks,” a message many believe signifies the project’s revolutionary intent.

The Bitcoin software enables the computers running it to manage a ledger (the blockchain) that accounts for all transactions made using its currency (BTC) by enforcing a variety of rules.

The Bitcoin blockchain is a full record of the network’s transaction history validated by nodes, or individuals running its software. This ensures that each BTC cannot be copied or modified, and that bitcoins cannot be created or used in a way that is against its rules.

Bitcoins are scarce, divisible and transferable, making them a valuable alternative money.

Bitcoin Cash shares many of the same goals as Bitcoin. Where it differs is in how it makes design decisions to realize those goals. 

For instance, supporters of Bitcoin Cash believe that Bitcoin’s value was closely tied to its utility as a means of payment, and that Bitcoin needed to make changes to preserve these properties. 

At the time, Bitcoin was seeing widespread use, and the fees required to settle transactions on the blockchain were rising, sometimes into the hundreds of dollars. 

To lower Bitcoin’s fees, Bitcoin Cash supporters wanted to increase Bitcoin’s block size to 8 MB, up from 1 MB, increasing the number of transactions that could be included in each block.

Bitcoin supporters generally rejected the idea, believing that it could have dire consequences for the economics of the network. The counter argument was that many successful internet startups subsidized consumer activity, and that this approach might make sense for Bitcoin early on.

As a result, Bitcoin Cash supporters created a new blockchain to test the theory.

Bitcoin’s white paper, titled “Bitcoin: A Peer-to-Peer Electronic Cash System,” was released by Satoshi Nakamoto in 2008.

The first 50 bitcoins were mined upon the release of the software, enabling a decentralized network of computers to run a digital economy that is still thriving today. 

Satoshi famously left the project in 2011 and hasn’t been heard of since, though you can find out more about his (or her) attitudes toward the technology in various emails and forum posts. 

Since then, hundreds of developers have contributed to improving Bitcoin’s code, whether it is routine bug fixes or great, efficiency driven, improvements.

第一个比特币现金区块是在2017年8月，在478丶558区块中挖出。 

通过接受一个具有不同规则集的区块，网络会分裂成两个不相容货币和两个独立的交易历史。 

因此，任何当时拥有比特币的人都会得到同等的比特币现金分配。 

从那时起，比特币现金区块链继续遵循与比特币相同的规则，即当每发现一个区块就向矿工奖励新的比特币现金。 
 

Central to Bitcoin’s design is the ability for two users to send each other BTC from anywhere around the world, without the need for an intermediary. 

In order to keep its network secure and decentralized, while regulating the supply of new money that gets released into its economy, Bitcoin uses a process called “mining."

In this system, called Proof of Work (PoW), miners race to complete cryptographic puzzles to propose blocks that make up the Bitcoin blockchain. 

When a block is discovered by a miner, it is announced to the network, and, when it’s verified by every node, the miner gets compensated in newly minted BTC. 

Wanting to create an alternative to payment systems like Visa and PayPal, Bitcoin Cash has prioritized design choices aimed to make its transactions cheaper and faster.

In practice, developers have sought to achieve this by changing the Bitcoin Cash block size, or the hard-coded limit on how many transactions can be included in each block. 

Bitcoin Cash blocks were originally set to a maximum of 8 MB, but they are capable of containing up to 32 MB worth of transactions. It’s worth noting, however, that this increase in block space hasn’t necessarily led to an increase in transactions. 

In practice, Bitcoin Cash blocks often contain fewer transactions than those on Bitcoin. 

Elsewhere, developers have created a token standard aimed at allowing new currencies to be created on top of Bitcoin Cash. 

比特币最大的价值主张之一是它的货币政策--只有2100万个BTC会被引入其网络经济中。 

当第一个区块在2009年被挖出时，50个BTC被释放，该区块奖励大约每四年被削减一半。 这事件被称为减半。 

通过这个过程，截至2020年，已经有超过1800万个BTC可供使用。最后一个比特币预计将在2140年被挖出。

Bitcoin Cash offers the same monetary policy as Bitcoin, with 21 million BCH ever being introduced into the network’s economy.

While Bitcoin Cash and Bitcoin share the same first 478,558 blocks, the first independent Bitcoin Cash block was mined in 2017 and offered a 12.5 BCH block reward.

The block reward is also cut in half every 210,000 blocks which is roughly every four years. The last bitcoin cash coin is projected to be mined in 2140.