Token of Ethereum erc20 standard

1.

in order to create erc20 token, you need to write down the following contents

1. token name
2. token symbol
3. token decimal
4. number of tokens is in circulation
5. Contract
6. code verification source code

in addition to erc20, there are erc20, erc721, erc223, erc621, erc827, But for erc721, by the way, erc721 is a protocol mainly used for blockchain games. The blockchain games you often see are basically based on erc721

2. Ethereum is an open source public blockchain platform with smart contract function. It provides decentralized virtual machine (Ethereum virtual machine) to process point-to-point contract through its special cryptocurrency ether (also known as "Ethereum"). The concept of Ethereum was first proposed by vitalik buterin, a programmer, from 2013 to 2014, inspired by bitcoin, to the effect of "next generation cryptocurrency and decentralized application platform". It began to develop through ICO crowdfunding in 2014
Ethereum is not only a database, it also allows you to run programs in the trusted environment of the blockchain. Ethereum has built a virtual machine named EVM (Ethereum virtual machine) on the blockchain. EVM allows code to be verified and executed on the blockchain, providing guarantee for code to run in the same way on everyone's machine. These codes are included in the smart contract. In addition to tracking the account balance, Ethereum uses the same method to save the EVM status on the blockchain. All nodes process the smart contract to verify the integrity of the contract itself and its output.

3. After giving birth to the baby, the body is more empty at the beginning. It is suggested to adjust after a while. Generally, it will be two or three months after returning to the previous state. The center of confinement is relatively better

4. No, I can't. let's switch to other ways

5. It's 1:1. The value is the same. The assets won't shrink. It's very good

6. Step 1: enter the interface and set a password, which is used to log in the wallet. Step 2: download the key file (a document at the beginning of UTC). Don't lose this file. This is the key file for you to open the wallet. Generally speaking, it is the key for you to log in to the door of the wallet. The registration and login of etherwallet and ICO investment tutorial are good. It only takes two steps to register the wallet. Next, how to log into myetherwallet. Step 1: click [send Ethernet coin / send token] step 2: log in with [keystorefile (UTC / JSON)] (other login methods are OK, you can choose this one), and then [Select wallet file], find the document that you saved before starting with UTC, enter the password you set before, and click [unlock]. The registration and login of etherwallet and ICO investment tutorial are OK. Congratulations on learning how to register and login. How to use Ethereum web wallet myetherwallet to invest in ICO project. Here I put it in a picture. First, you have to have ether. Left: it's your Ethernet address. You can withdraw the Ethernet from the exchange to this address. Right side: the address of the project side.

7.

Rc20 token standard (erc20 token standard) is a standard used to create token through Ethereum. According to the erc20 specification, a smart contract can be written to create a "interchangeable token". It is not mandatory, but following this standard, the token created can interact with many exchanges, wallets, etc. it has now been widely accepted by the instry

erc20 token standard was first proposed by Ethereum developer Fabian vogelsteller in the open source community. Later, Ethereum founder vitalik (known as "V God") wrote the first version of the document, which was called "standardized contract API" at that time_ Contract_ APIs

following erc20 token standard, smart contracts can be written. The token methods it needs to implement include: optional name, symbol, decimals, balance of, transfer, transfer from, approve, and allowance. The event responses it needs to implement include transfer, approve

in addition to erc20, Ethereum also focuses on erc721. Different from erc20, erc721 is a non fungible token standard (NFT)

The general syndromes of

erc20 are interchangeable and homogeneous, while the general syndromes of erc721 are not interchangeable and heterogeneous; Erc20 can be subdivided infinitely, while erc721 can not be subdivided because its minimum unit is 1

in June 2018, erc721 was officially accepted by Ethereum community and became the final standard. The popular cryptokitties followed the erc721 standard

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