What about the many Bitcoin cousins?

IFO, Clone Age

At the end of 2017, IFO (Initial Fork Offering) continued to attract people’s attention. If ICO is a baby who newly created a digital currency, nothing has started to develop; then IFO cloned a bitcoin brother (including existing accounts and ecosystems) and then developed independently.
Compared with ICO, IFO’s advantage is that the customer base is very clear, and both have bitcoin operating experience and are no strangers to digital currency. The disadvantage is that it is limited to people who originally had bitcoin and cannot attract new ones like the original ICO. people
Now the cousins have: Bitcoin cash, Bitcoin diamonds, Bitcoin gold, etc., have not changed much in technology. The account system, transfer methods, and mining methods are all similar to Bitcoin. Compared with Bitcoin, altcoins are not strong in development, and their market influence is also weak. It is the ecology that completely bitcoin drives the coins.
Bitcoin cash（BCH）
In mid-2017 the developers, not content with the Segregated Witness feature, implemented a change to the bitcoin code. The change, called a hard fork, took effect on August 1, 2017. As a result, the bitcoin ledger called the blockchain and the cryptocurrency split in two. At the time of the fork anyone owning bitcoin was also in possession of the same number of Bitcoin Cash units.
Features
On May 15, 2018, the capacity of the block was increased, the capacity of 8MB was increased to 32MB, and transactions that could be processed once increased four times, but the resources consumed did not change, which meant that the transaction fee was reduced.This fork includes the addition of OP codes, which allow smart contract capabilities.In addition to increasing the data carrier limit for OP_Return to 220 bytes, the fork introduces new smart contract capabilities, often incorrectly believed to be exclusive to Ethereum.
Signature algorithm update: Technically this can reduce the potential for bugs and provide more stable security
Mining difficulty adjustment method update.
However, Bitcoin’s problem of cash centering is prominent, and Bitmain controls considerable computing power.
Bitcoin Gold（BTG）
Bitcoin gold is a distributed digital currency. It is a hard fork of Bitcoin, the open source cryptocurrency. The stated purpose of the hard fork is to restore the mining functionality with common Graphics Processing Units (GPU), in place of mining with specialized ASIC (customized chipsets), used to mine Bitcoin.
A central part of the bitcoin process, mining, is being controlled by a few manufacturers who sell their products to a select group of industrialized miners, centralizing the mining task and breaking with one of the core values of bitcoin — decentralization. ASIC resistant GPU powered mining provides a solution, as this kind of hardware is ubiquitous, and anyone can start mining with a standard, off-the-shelf laptop computer.
The hard fork occurred on October 24th, 2017, at block height 491407. The Bitcoin Gold team used ‘post-mine’ — a mining of 100,000 coins after the fork had already occurred. The team did this via a rapid mining of approximately 8,000 blocks at 12.5 BTG per block. The bulk of premined coins have been placed into an ‘endowment’, and according to the developers will be used to grow and maintain the BTG ecosystem. However, of the 100K coins, some five percent were set aside as a bonus for the team, or about 833 coins for each of the six members.
Bitcoin gold uses the memory hard equihash as proof-of-work algorithm instead of the sha-256.
Bitcoin Diamond (BCD) is a fork of Bitcoin that occurs at the predetermined height of block 495866 and therewith a new chain will be generated as the BCD. Bitcoin Diamond miners will begin creating blocks with a new proof-of-work algorithm, and will consecutively develop and improve the transaction speed based on original features of BTC. This will cause a bifurcation of the Bitcoin blockchain. The original Bitcoin blockchain will continue on unaltered, but a new branch of the blockchain will split off from the original chain. It shares the same transaction history with Bitcoin until it starts branching and coming into a unique block from which it diverges. As a result of this process, a new cryptocurrency was created which we call ‘Bitcoin Diamond’.
What about Bitcoin and his “cousins” now?
Bitcoin price was $8425.57USD，Volume (24h)$6,539,060,000 USD，Market Cap
$143,556,336,135 USD
Bitcoin Cash price was $1,321.64 USD，Volume (24h)：$869,074,000 USD，Market Cap：$22,642,286,919 USD
The Bitcoin gold price to USD reached a historical high to $524.26 on Oct 24,2017.Its current trading price is 58.71 US dollars. The market value has fallen by nearly 90%.
Bitcoin Diamond’s price to USD reached the highest at 104.84 USD on Nov 25, 2017.Its current trading price is $4.08. The market value has fallen by nearly 96%.
Bitcoin is the earliest encrypted digital currency and has epoch-making significance. Its popularity is far beyond BCH, BTG and BCD.
In recent years, Bitcoin’s limited development due to various technical restrictions may lead to competitive coins surpassing Bitcoin.

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