Name: BTC (Bitcoin）
Issue time: November 1,2008
Total supply: 21 million
Official website: https://bitcoin.org/en/
BTC is the abbreviation of Bitcoin, The concept was originally proposed by Nakamoto Satoshi on November 1, 2008, and was officially born on January 3, 2009. BTC is a virtual encrypted digital currency in the form of P2P with a total issued size of 21 million. The Bitcoin network will release a certain amount of bitcoin every 10 minutes, and it is expected that the number of bitcoins will reach the upper limit in 2140.
Bitcoin does not rely on a specific currency institution for distribution. It is generated by a large number of calculations according to a specific algorithm. The Bitcoin economy uses a distributed database of nodes in the entire P2P network to confirm and record all transaction behaviors, and uses cryptographic design to ensure the safety of all aspects of currency circulation. The decentralization of P2P and the algorithm itself ensure that the currency cannot be manipulated by mass-produced bitcoins. Cryptographic based design allows Bitcoin to be transferred or paid only by the actual owner. This also ensures the anonymity of currency ownership and circulation transactions. The biggest difference between Bitcoin and other virtual currencies is that their total quantity is very limited and extremely scarce. Therefore, Bitcoin is also called "digital gold" by investors.
Name: ETH (Ethereum,ether)
Issue time: July 24, 2014 open pre-sale
Official website: https://www.ethereum.org/
Ether (ETH) is a digital token of Ethereum, considered "bitcoin version 2.0", using the blockchain technology "Ethereum" different from Bitcoin. Ethereum is currently the most widely used public blockchain system supporting full application development to support a wide range of advanced features, allowing anyone to issue tokens and to write smart protocols, decentralized exchanges and more. Specifically, Ethereum uses a Turing-complete scripting language that is similar to assembly language, allowing code to be written for what you want to achieve through a mechanism called a "smart contract." ETH is essentially a blockchain + smart contract. A contract is like an automatic agent living in an Ethereum system. Whenever a transaction is received, the contract runs a specific piece of code that can modify the data store or send the transaction within the contract.
Name: USDT (TetherUSD, tether)
Issue time: 2014
Official website: https://tether.to/
Tether (USDT) is Tether's token-based Tether USD (referred as USDT) based on the stable value currency (USD). 1USDT=1 USD, users can use USDT and USD for 1:1 exchange at any time. Tether strictly adheres to the 1:1 reserve guarantee, which means that for every USDT token issued, its bank account will have a $1 guarantee. Users can check the funds on the Tether platform to ensure transparency. The biggest feature of the USDT is that it is equivalent to the same amount of US dollars, 1 USDT = 1 US dollar. Make it a perfect value-preserving token in the volatile cryptocurrency market.
Name: LTC (Lite Coin)
Issue time: October 8, 2011
Total issuance: estimated 84 million
Official website: https://litecoin.org/
Litecoin is a network currency based on "peer-to-peer" technology and an open source software project under the MIT/X11 license. It helps users pay instantly to anyone in the world. The technical principle of Litecoin is the same as that of Bitcoin. It is also a decentralized architecture, no central authority control, new currency issuance and transaction payment transfers are based on open source encryption algorithms, etc. These are all design principles that emulate Bitcoin.
Name: EOS (Enterprise Operation System, grapefruit)
Issue time: July 2, 2017
Total issuance: 1 billion
Official website: http://eos.io
EOS can be understood as the Enterprise Operation System, a blockchain operating system designed for commercial distributed applications. EOS is a new blockchain architecture introduced by http://EOS.IO software designed to extend the performance of distributed applications. Note that it is not a currency like Bitcoin and Ethereum, but a token based on the http://EOS.IO software project, called Blockchain 3.0.