区块链与代币编写的区别,区块链与代币编写的关系

㈠ What are tokens in the blockchain?

Tokens are utility tokens.
Utility tokens are used to purchase certain specific goods or services. special cryptocurrency. There are two main categories of tokens: utility “tokens and security” tokens.
In addition, in order to make the entire usage and payment process more automated, file tokens have a very important advantage compared to ordinary currencies, that is, users can choose to use them in units smaller than a penny, making pricing easy Extraordinarily accurate. The goal of file tokens is to make cloud storage systems as safe and reliable as other commercial activities, but at the same time decentralized. Utility tokens serve as simple tools that make this strategy more feasible.
Extended information:
Users can purchase these tokens with any currency, and hard disk space owners can also exchange the tokens they harvest into the real currency they need, or save these tokens for storage their own data.
Security Tokens
Security tokens can also be called token securities or crypto-securities, rather than just a currency. It usually represents ownership of an actual asset. Just like traditional stocks and funds, they are regulated by the SEC. Ordinary securities are on paper, while many more exist in a unified database and are monitored. Security tokens use the blockchain system, a decentralized database to monitor who owns which assets at any time.
The use of security tokens based on blockchain technology gives people the possibility of transactions outside the opening hours of ordinary banks and stock markets, and also makes transfers faster. In addition, a software-based trading venue makes contracts more flexible and automates all aspects of supervision and recording. Security tokens make it easier for users to diversify their investments. Just like an electronic trading investment account can trade many different stocks and funds; a blockchain digital wallet can trade different security tokens, and these tokens can represent stocks, bonds or even real estate.
Connection to Cryptocurrencies Tokens like Ethereum do not require a separate blockchain. Instead, their ownership accounting systems can be outsourced to existing blockchain ledgers, allowing for distributed accounting. This essentially creates a new distributed ledger for a specific token, such as Ethereum’s ledger. Each user's token transactions on the Ethereum network will be monitored and recorded, and they will also need to pay a small fee to authenticate the transaction. Tokens are still in the early stages of development, and there may be more innovation in how they are used in the coming years.

㈡ How to develop blockchain and what is needed to develop a digital currency exchange

Hello, what exactly do you want to ask about this question is how to develop blockchain? Or how to develop a digital currency exchange? Blockchain is a technology and a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. develop numbersCurrency exchanges need to use blockchain technology. Here is a general process for your reference:

Choose a jurisdiction that suits your needs and budget.

Open your company and open a company bank account (the account is for business transactions, not for the storage of client funds).

Deposit funds into your digital currency exchange.

Purchase/develop digital currency exchange system.

Create a token or coin that can be traded with BTC, ETH, etc. Supporting multiple digital currency trading pairs and multiple legal currency transactions, the more trading pairs can be provided,

Establish a compliance system and retain relevant records, such as: KYC, AML and other rules.

Hire employees who focus on compliance and banking business (in addition to the original marketing staff, additional hires are required), conduct self-regulation, and prepare for future application for international licenses.

Apply or negotiate to obtain a digital currency license in the region where you will operate. Currently, many well-known digital currency exchanges have not obtained licenses.

Establish a debit card or other withdrawal system to facilitate exchange users to withdraw money without using wire transfer.

Create a USD-backed pegged token (similar to USDT) that can be stored in an electronic wallet or used for trading. The main purpose of this anchored token is to reduce transaction fees caused by users' wire transfers or exchange withdrawals. The pegged token needs to be fully reserved in a U.S. bank.

Apply for digital currency licenses in certain jurisdictions where your customers are located. That is, if you plan to list in the UK, you will need to obtain a UK license.

Open a bank account specifically for handling user funds.

Of the above tasks, the most difficult is step 12 - opening a bank account dedicated to handling user funds. The preparation work from step 1 to step 11 is crucial to step 12. The improvement of preparation work will help you successfully obtain a bank account. Currently, about 80% of assistance requests are related to the final opening of a bank account specifically for handling user funds. . If you do not have your own development team to develop a digital currency exchange, it is recommended that you choose a professional service provider like MasterDAX, which is very helpful in terms of time and personnel costs.

㈢Blockchain Technology

Blockchain technology is called distributed ledger technology. It is an Internet database technology. It is characterized by decentralization, openness and transparency, allowing everyone to Individuals can participate in database recording.

Blockchain technology will be applied to credit reporting, transaction security and information security in the financial industry. Financial data security, information privacy and network security are suitable for distributed block technology. Blockchain can form point-to-point digital value transfer in finance, thus improving the security of transmission and transactions.

Domestic blockchain technology companies started late, but there are many ICO projects and they are developing very rapidly. Currently, the well-known blockchain technology companies include Yingtang Zhongchuang, Feifang Sentian Integrity, and Luyi Tong et al.

In these well-known companies, token prices vary, but those that use blockchain technology for commercial applications, such as Yingtang Zhongchuang in Shenzhen, develop commercial application technology and use blockchain The chain commodity Internet of Things comprehensive service platform is the core, providing enterprises and consumers with more competitive production management, warehousing management, anti-counterfeiting traceability, precision marketing and other services.

With the increase of ICO projects, supervision will inevitably follow the trend. Therefore, whether it is well-known or unknown, only by truly applying technology and applying blockchain technology to commercial applications can we truly succeed. More long-term.

㈣ What is STO and what is the process of STO token issuance

STO is a security token

The process of STO token issuance is as follows:

Issuance plan design: Give reasonable suggestions based on the project party’s qualification information and requirements to more effectively avoid other risks;

VIE main body construction: Register overseas main company , tax exemption, reasonable and legal return of profits;

Project legal compliance: Provide the project party with all legal documents required for Reg compliance, apply for a CID code, and submit for filing;

Token issuance: According to the previous plan, we will jointly negotiate the token issuance time period;

Qualified investors/institutional docking: Docking with overseas qualified investors and investment institutions such as China, the United States, Japan and New Zealand.

STO overseas issuance is divided into two types: one is Rge. A+ registered under the Securities and Exchange Commission SEC. This requirement for overseas investors is usually relatively high and can be used as Long-term preparation; second, you can apply for exemption from the SEC and just need to file a record. The SEC will not take the initiative to review Reg. D and Reg. The financing amount and overseas publicity are also more favorable.

The attitude of the U.S. SEC is very clear: the digital currencies generated by ICOs are securities, so the issuance process needs to be regulated in accordance with securities laws. Bitcoin was not generated by an ICO, so Bitcoin is not a security and is not within the scope of SEC supervision. However, digital currency ETFs fall under the regulatory scope of the SEC. Currently, the SEC requires all ICOs to register, go through the Security Token Offering (STO) process, and follow existing securities regulations. If you do not follow the SEC's requirements for a legal STO, the SEC will take severe enforcement actions.

Sto is a security token. How did it appear out of thin air? Looking at the ICO situation this year, the emergence of STO is no accident. Compared with ICO, which is decentralized and only requires virtual currency financing, the threshold is low and the risk is high. STO is under legal and compliance supervision and is mortgaged with offline tangible assets. Token securities issuance and investment threshold increase, and also greatly reduced risks, so the issuance of STO securities tokens has become a popular target.

Some people will inevitably question the implementation of new things. Some people say that STO is just a new set of clothes for existing securities. If the existing securities are simply tokenized, then there will indeed be insufficient innovation and limited value. It’s purely asset tokenization.

This has to mention the advantages of STO. After ST is listed and traded, unlike traditional securities, once the transaction is completed on the exchange and withdrawn to the wallet, ST completes the delivery. Compared with traditional securities The tedious work seems faster.

In addition, the biggest advantage of ST compared to traditional securities is that ST is programmable and can bring many functions to listed companies that traditional securities do not have. These new programmable features turn traditional securities into smart securities, and STO has the technical advantages to replace IPOs.

In the process of actual implementation of STO, there is currently an operating method, which is to imitate the process of overseas listing of Internet companies, first register an offshore company, then control the domestic company through the VIE structure, and then use the offshore company to control the domestic company. Shore companies issued ST, but in the end they were not listed on Nasdaq, but traded on licensed ST digital exchanges such as Open Finance, tZero, and CSE.

Specifically, STO itself has the following advantages:

1. Better liquidity;

2. Automated management at the protocol level;

3. Transactions are delivered within 24 hours;

4. Smaller trading units
At the end of the day, I think of the SEC’s repeated rejection of BT coin ETFs. Every time there is some movement from the SEC, it can be intuitively reflected in BTC In terms of price, the digital asset market is also looking for new financing models.

So what kind of domestic companies can issue STO in the United States:

Have actual assets and no profit requirements;

Have business history and Income;

No bad record in the United States;

No limit on company form; good market potential.

㈤ What is the relationship between blockchain and cryptocurrency? What is the difference between blockchain and cryptocurrency?

What is the difference between blockchain and cryptocurrency? The difference is that many people have heard of blockchain and cryptocurrency in the currency circle. Many people are confused about the relationship between the two, or do not know the relationship between blockchain and cryptocurrency. Let’s take a look with the editor. Well, I hope this article can help you.
What is Blockchain
Blockchain is a platform that allows cryptocurrencies to function. Blockchain is a technology used as a distributed ledger that constitutes a network, creating a means of transactions and enabling In order to transfer value and information, blockchain is a technology. Blockchain is a distributed ledger technology. Each block package includes information and data that are bundled together and verified. After verification, it is connected to the previous things in blocksservices and information.
What is Cryptocurrency
Cryptocurrencies are the tokens used in these networks to send value and pay for these transactions, compared to blockchain, the use of cryptocurrencies with tokens based on distributed ledger technology Related, you can think of cryptocurrency as a tool in the blockchain. In some cases, it can be used as a resource or practical program function. In other cases, it can be regarded as the value of digital assets.
The difference between blockchain and cryptocurrency
Blockchain is a basic technology, of which cryptocurrency is part of the ecosystem. Generally, encryption is required to conduct transactions on the blockchain. They need to develop together and go hand in hand. , without blockchain, we would have no way to record shipments and transfers of these transactions.

㈥ Introduction to Ethereum Token Standard

The vast majority of blockchain entrepreneurial teams develop their own projects on Ethereum and use Ethereum The network issues its own tokens (Tokens), and the standards for token issuance need to comply with the Ethereum Token Standard (ERC-Token Standard). This article will help you sort out the various token standards of Ethereum.

What is the Ethereum Token Standard (ERC-Token Standard)?

Blockchain project tokens built on the Ethereum network need to comply with the following token standards: ERC-20, ERC-223, ERC-621, ERC-721, ERC-827 . Among them, ERC is the abbreviation of Ethereum Request for Comments, which is literally translated as Ethereum Comment Request. It is a network command containing structured information. ERC-Standard is defined by the Ethereum community and is a rule for users to interact with the Ethereum network. But the standard itself is not static. Community developers can propose new standards defined by themselves, but this standard needs to be accepted by the entire Ethereum community before it can be applied to the Ethereum network.

㈦ Teach you step by step how to issue tokens

Currently, the most widely used token (blockchain currency) is the ERC20 token issued on Ethereum. ERC20 can be regarded as a smart contract. This smart contract keeps track of who owns how many tokens and includes some token transfer functions. If the token smart contract you write complies with the ERC20 standard, your token is called an ERC20 token.

Many concepts similar to ERC20 can seem complicated when you just listen to people talking about them. In fact, the easiest way to understand is to implement it yourself.

An ERC20 token is a smart contract, which records account token balance data and method functions for transferring tokens. Deploy smart contracts on EthereumPreviously, smart contracts could be tested in a test environment. There are some Ethereum test networks available. We chose the Rinkeby network for this currency issuance experiment.
1. In the metemask wallet of Chrome browser, select the rinkeby test network.

Send a Post on Facebook, the content is the currency receiving address, which is the account address of the metamask wallet. The post is set to public. Right-click the posting time, copy the link, and fill it in Rinkeby Faucet. Choose to borrow 3 ETH, the usage period is 8 hours, and you can get the 3 ETH after waiting for a while.

You can also see that the ETH has arrived in the metamask wallet.

3. Now that we have the money and wallet, let’s start writing the currency issuance smart contract. We choose the Remix online development platform. There are a lot of cases for ERC20 tokens that you can refer to, just borrow them.

After compiling the smart contract, Run it to fly.

Here you need to fill in some configuration information. Select "Web3" for the Environment running environment because we are using the metamask wallet; fill in the metamask wallet account for the Account account; fill in the upper limit of the Gas limit transaction fee. It doesn't matter if you fill in more for this. No real fees are consumed in the test network; the Value contract transfer amount, here is 0Wei; select the HayekToken smart contract; fill in the currency information (input parameters of the contract constructor), the number of coins is 21,000,000 (the same as Bitcoin, pay tribute to Satoshi Nakamoto ), currency name HayekToken, minimum currency unit 0 (decimaUnits), currency abbreviation HYT.
After filling in the configuration information, click "Create" and the contract will start running. Then the metamask wallet pops up, requiring us to confirm the "transaction" and click "Submit".

4. Verification
After the smart contract was released, the smart contract address appeared in Remix:
You can also check the account balance. Please note that when entering the account, add "", click "balanceOf"

You can see 21 million HYT in my account.

Add Token in the metamask wallet, you can also see this token .

Coin issuance is successful!

Blockchain token issuance is very simple. How is it different from other tokens, such as Q coins?

Tokens act as a circulation medium in a proprietary field. Q coins can be used to purchase Tencent’s virtual services, game coins can be used to catch dolls, and canteen menus can be used to buy food. Ordinary tokens (Q coins, game coins, menu cards) What is the difference between it and blockchain tokens (ERC20)? The core difference is actually not the difference between centralization and decentralization, but the difference between whether it can be freely exchanged. Q coins can only be recharged with legal currency on Tencent’s platform, but Q coins cannot be exchanged for legal currency. Game coins can only be used to catch dolls, not snacks. Menu cards can only be used in the cafeteria. Blockchain tokens can be exchanged for another token on the exchange, and can also be used outside the venue Exchange it into legal currency.

This difference makes a huge difference. Blockchain tokens can be traded freely, forming a trading market with fluctuations and financial attributes. Banker coins, pyramid schemes, etc. Scams use the financial attributes of blockchain tokens to make money. In order to protect small investors (unqualified investors), various countries have adopted different levels of supervision on blockchain tokens.

These analogies are actually very unfair. Accurately, because of the introduction of blockchain tokens and incentive mechanisms, investors and users are integrated in these applications. In other words, after the introduction of token incentives, holders of tokens become shareholders. Of course, shareholders expect this application Widely popularized, and even contribute to applications, and gain benefits when the token appreciates. At the same time, token holders are also users, and can use tokens to purchase application services, or even lease tokens to others. This allows applications that introduce token incentives and Ordinary applications are completely different. Although ordinary applications may also have points rewards, points cannot be circulated freely and cannot be exchanged for money at will.

New production relationships based on blockchain tokens are being created, and you will also find Try a coin.

What are the basic concepts of blockchain programming and development technology?

With the continuous development of the Internet, the development and application of blockchain technology for rent return has also been It’s on the agenda. Today’s java course will let’s learn about the basic concepts that need to be mastered about blockchain programming and development technology.

1. Blockchain technology< /p>

Chain data structure, the head of each block stores the hash pointing to the previous nodevalues, connected in turn.

Based on the P2P network, the distributed node consensus algorithm maintains and updates data to ensure that the data is "non-tamperable".

Use cryptography principles to ensure the security of data transmission and access.

Automated scripts (smart contracts) to program and manipulate data.

Essentially it is a decentralized database, and what it ultimately wants to solve is the trust issue in Internet transmission.

2. Decentralization

The entire network is jointly participated by each node and maintained jointly, without dependence Central processing node, each node is the center.

Data storage and update are distributed and do not require intermediary or trust structure endorsement.

3. Private chain, public chain and alliance chain

Private chain:

Participating nodes have limited qualifications and controllability, and limited reading and writing.

Weak centralization solves the problem of trust among "teammates" (within the organization).

Public chain: Suisan

Open, anyone can read the data on the chain and participate in transactions.

Completely decentralized, the data on the chain cannot be tampered with by any person or institution.

Encourage participants to compete for accounting rights through a reward token mechanism.

Solve the problem of "human beings" (all people) being untrustworthy.

Consortium chain:

It is jointly participated, maintained and managed by multiple institutions. The data on the chain is only allowed within the system. Institutions read, write, and trade.

Partially decentralized, each institution runs one or more nodes.

Solve the problem of "organizational" (inter-agency) distrust.