ada区块链,ar 区块链

ADA区块链是一个开放的、分布式的、去中心化的数字货币系统，它的核心是一个可以自动执行智能合约的区块链网络。它的目的是为了提供可靠的金融服务，使用户可以安全地存储和交换数字货币，并且可以使用智能合约来执行复杂的交易。

AR区块链是一种基于区块链技术的分布式账本技术，它可以帮助用户实现安全、可信赖的记录和跟踪交易，以及更快、更简单的交易处理。它可以帮助企业更好地管理账务，并且可以提高数据的安全性和可靠性。

数字货币是指由计算机程序代表的货币，它不属于任何国家和中央银行。数字货币可以通过区块链技术实现安全的交易，并且可以在网上进行购买和出售。它比传统的货币更加安全，因为它不需要第三方的参与，而且可以在世界任何地方使用。

智能合约是一种基于区块链技术的分布式账本技术，它可以帮助用户实现安全、可信赖的记录和跟踪交易，以及更快、更简单的交易处理。智能合约可以自动执行合同，从而避免了人为的错误和欺诈行为，并且可以帮助企业更有效地管理账务。

去中心化是一种无需第三方参与的交易方式，它可以帮助用户更安全地进行交易。去中心化的特点是，它不需要中央服务器，也不需要第三方的参与，只需要双方的同意，就可以完成交易。由于没有中央服务器，它可以更有效地防止欺诈行为，并且可以更安全地保存数据。

ADA区块链和AR区块链都是基于区块链技术的分布式账本技术，它们可以帮助用户实现安全、可信赖的记录和跟踪交易，以及更快、更简单的交易处理。它们可以帮助企业更好地管理账务，并且可以提高数据的安全性和可靠性。此外，它们还可以帮助用户实现安全的交易，使用户可以安全地存储和交换数字货币，并且可以使用智能合约来执行复杂的交易。最后，它们还可以帮助用户实现去中心化的交易，从而更安全地进行交易。
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1. What is blockchain

In the simplest terms, blockchain is a distributed ledger.

To understand what this means, we first have to look at its opposite: a centralized ledger. Because blockchain technology started with finance, we will also introduce it below using banks as an example.

The following is our process for using bank debit card transactions:

You can swipe your card to purchase goods in stores.

The merchant sends a statement to your bank for the agreed upon amount.

Your bank will verify that you may have authorized the purchase.

The bank sends the money to the merchant.

Finally, the bank records this information in its ledger.

There’s a lot of technology involved here, but that’s basically it. The last step is important - the bank records all transactions made by the customer. This ledger goes all the way back to the first transaction the bank made.

This ledger is kept, maintained and regulated by the bank. You can read it in your online bank account, but you can't change it. The bank has complete control. If it decides to make a change, there's nothing you can do about it.

Crucially, if hackers were able to access a bank’s ledger, that could cause a lot of problems. They can change the account balance to make it look like certain transactions never occurred, etc.

This is why distributed ledgers are so cool.

Blockchain Network Visualization

If a bank operates on a distributed ledger, each member of the bank will have a copy of the ledger, and whenever any member of the bank When they make a purchase, they tell every other member of the bank.

Each member will validate the transaction and add it to the ledger (the added records are called "blocks"). This has some important benefits, as there is no centralized authority that can manipulate records. Hackers accessing one ledger won't be a big problem because other ledgers can easily verify it.

On the other hand, it requires a lot of work. In short, the second system is blockchain (at least in financial scenarios).

As mentioned above, blockchain is a decentralized list of transactions. If I send Xiao Ming 2 Bitcoins, I send a message to everyone in the network saying "I am sending Xiao Ming 2 Bitcoins" and they all record the transaction.

The future of blockchain, how will it change our lives?

One thing that is important about blockchain is that it is a public resource and no one really owns it because everyone owns it.

Blockchain is not just science fiction. we do not needUnderstand the mechanics behind this technology, but you need to understand that it could revolutionize our lives in the next 20 years.

This may sound bold, but remember, 20 years ago we were browsing the Internet on Netscape, using state-of-the-art Motorola flip phones, and buying our first DVD players. At that time, if we imagined that a computer could be held in our hands and that we could buy cars, make payments, and watch movies, it would have been considered a fantasy.

Although the impact of blockchain may not be as obvious as the Internet, nor as tangible as mobile phones, blockchain will effectively solve many worries in daily life. Such as intermediaries cheating people, transaction delays, etc. In our current lives, middlemen are everywhere and we take them for granted as a part of life. If one day these intermediaries cease to exist, you will find that the world will become a different place.

Imagine that by 2040, blockchain may become a mature and widely used technology. When one day you can't live without the blockchain just like you can't live without the Internet now, you will be surprised to find that this decentralized accounting technology has simplified the complexity and become a part of your lifestyle

2. What does blockchain mean and how to understand it

Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm.

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of related data generated using cryptographic methods. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

Notes

1. Blockchain originated from Bitcoin in November 2008 On March 1, a person claiming to be Satoshi Nakamoto published the article "Bitcoin: A Peer-to-Peer Electronic Cash System", which elaborated on P2P network technology, encryption technology, timestamp technology, blockchain technology, etc. The architectural concept of the electronic cash system marked the birth of Bitcoin.

Two months later, the theory came into practice, and on January 3, 2009, the first genesis block with serial number 0 was born. A few days later, block number 1 appeared on January 9, 2009, and was connected to the genesis block number 0 to form a chain, marking the birth of the blockchain.

2. In order to realize the great leap forward development of blockchain finance, in order to promote the new development of China’s economy, accelerate the circulation of global assets, and realize the dream of rejuvenation that generations have been striving for, Puyin Group launched the On the 9th, a Puyin Blockchain Finance Guiyang Strategy Release Ceremony was held in Guizhou. At the meeting, the blockchain will realize the digital circulation of assets and blockchain financial transactions.Transaction model, and discuss the application of blockchain services and social public industries.

3. What is blockchain technology and how does it change business and financial models

Blockchain technology is a distributed ledger technology that Allows multiple participants to jointly maintain a secure, transparent and immutable record on a decentralized network. Blockchain technology was originally designed for the digital currency Bitcoin, but is now widely used in many other fields.

The core features of blockchain technology include:

Decentralization: Blockchain has no central control agency, and data is distributed on various nodes in the network, which makes it decentralized. The centralization feature reduces the risk of single points of failure.

Transparency: Transaction records on the blockchain are public to all participants, and anyone can view these records. This helps increase trust and reduce the risk of fraud.

Immutable: Once a transaction is recorded on the blockchain, it cannot be easily modified or deleted. This guarantees data integrity and security.

Smart contracts: Transactions on the blockchain can be automatically executed to implement "smart contracts", which automatically execute corresponding operations when specific conditions are met. This helps simplify complex business processes and reduce costs.

Blockchain technology has had a profound impact on business and financial models, which is mainly reflected in the following aspects:

Reducing costs: Blockchain technology can reduce intermediary links and reduce costs. Transaction costs and operating costs. For example, by adopting blockchain for cross-border payments, remittance fees can be significantly reduced.

Improve efficiency: The automation and smart contract features of blockchain technology help improve the efficiency of business processes, reduce manual intervention, and reduce error rates.

Enhance trust: The transparency and non-tamperability of blockchain technology help to establish a reliable trust system, reduce the risk of fraud, and provide better protection for business activities.

Innovative business models: Blockchain technology has spawned many new business models, such as decentralized finance (DeFi), digital asset trading, supply chain finance, etc. These new business models have brought disruptive changes to existing industries.

In short, blockchain technology, as an emerging technical means, is gradually changing the landscape of business and finance. With the continuous development of technology and the in-depth promotion of applications, blockchain is expected to have a more extensive and far-reaching impact in the future

4. What is the six-layer model of blockchain

The blockchain has a total of six hierarchical structures. These six hierarchical structures from bottom to top are: data layer, network layer, consensus layer, incentive layer, contract layer, and application layer.
1. Data Layer
The data layer is the bottom layer of the six-level structure of the blockchain. We can understand the data layer as a database, but for blockchain, this database is an untamperable, distributed database, which is what we callThe so-called "distributed ledger".
On the data layer, that is, on this "distributed ledger", the data information on the blockchain is stored, encapsulating the blockchain structure of the block, asymmetric encryption technology, hash algorithm and other technologies Means to ensure the security of data when it is disclosed to the entire network. The specific approach is:
On the blockchain network, nodes use consensus algorithms to maintain the consistency of data in the data layer (that is, this distributed database), using asymmetric encryption and hash algorithms in cryptography. , to ensure that this distributed database cannot be tampered with and is traceable.
This constitutes the lowest level data structure in blockchain technology. However, it is not enough to have a distributed database. The data information in the database also needs to be shared and exchanged. Next, we introduce the upper layer of the data layer - the network layer.
2. Network layer
The network system of the blockchain is essentially a P2P (point-to-point) network. Point-to-point means that there is no need for an intermediate link or centralized server to control the system. Everything in the network Resources and services are allocated to each node, and information can be transmitted directly between the two nodes. However, it should be noted that P2P
(peer-to-peer) was not invented by Satoshi Nakamoto. Blockchain just incorporates this technology.
So, the network layer of the blockchain is actually a particularly powerful peer-to-peer network system. In this system, each node can both produce and receive information, just like sending emails. You can write your own emails or receive emails sent to you by others.
On the blockchain network, nodes need to jointly maintain the blockchain system. Whenever a node creates a new block, it needs to notify other nodes in the form of broadcast, and other nodes receive After receiving the information, the block is verified, and then a new block is created based on the block. In this way, the entire network can jointly maintain and update the general ledger of the blockchain system.
However, what rules should the entire network follow to maintain and update the general ledger of the blockchain system? This involves the so-called "laws and regulations" (rules), which is what we will introduce next: the consensus layer.
3. Consensus Layer
In the world of blockchain, consensus, simply put, means that the entire network must maintain and update the general ledger of the blockchain system according to a unified and agreed-upon rule. Similar to the rules for updating data. Allowing highly dispersed nodes to efficiently reach consensus in a decentralized blockchain network is one of the core technologies of the blockchain and is also the governance mechanism of the blockchain community.
The current mainstream consensus mechanism algorithms include: Bitcoin's Proof of Work (POW), Ethereum's Proof of Stake
(POS), EOS's Delegated Proof of Stake (DPOS), etc.
We have now introduced the data layer, network layer, and consensus layer. These three layers ensure that there is data, network, and updates on the blockchain.The rules of data, but there is no free lunch in the world. How to enable nodes to actively participate in the maintenance of the blockchain system, this involves incentives, which is what we will introduce below: the incentive layer.
4. Incentive layer
The incentive layer is the so-called mining mechanism. The mining mechanism can actually be understood as an incentive mechanism: how much you contribute to the blockchain system, you can get as many rewards as you want. Using this incentive mechanism, nodes across the entire network can be encouraged to participate in data recording and maintenance on the blockchain.
The mining mechanism and the consensus mechanism are actually the same. The consensus mechanism can be understood as the company's general rules and regulations, and the mining mechanism can be understood as, within this general rules and regulations, what you have done can What kind of reward you get, this kind of reward rules.
Just like Bitcoin’s consensus mechanism PoW, its stipulation is that the more work you do, the more you gain. Whoever can find the correct hash value first can get a certain amount of Bitcoin rewards;
And Ethereum PoS stipulates that the longer the currency holder is, the greater the probability of receiving rewards.
It should be noted that the incentive layer is generally only available in public chains, because public chains must rely on nodes across the entire network to jointly maintain data, so there must be such an incentive mechanism to encourage nodes throughout the network to participate in the blockchain system. Construction and maintenance to ensure the security and reliability of the blockchain system.
The blockchain is safe and reliable, but it is not smart enough, right? The contract layer we will introduce below can make the blockchain system more intelligent.
5. Contract Layer
The contract layer mainly includes various scripts, codes, algorithm mechanisms and smart contracts, and is the basis for blockchain programmability. The "smart contract" we are talking about belongs to the contract layer.
If the Bitcoin system is not smart enough, then the "smart contracts" proposed by Ethereum can meet many application scenarios. The principle of the contract layer is mainly to embed code into the blockchain system and use this method to implement customizable smart contracts. In this way, on the blockchain system, once the terms of the smart contract are triggered, the system can automatically execute the order.
6. Application Layer
The last is the application layer. The application layer is very simple. As the name suggests, it is the various application scenarios and cases of blockchain. The "blockchain+" we are talking about now is the so-called application layer. The blockchain applications that have been implemented so far are mainly various blockchain applications built on public chains such as ETH and EOS. There are many gambling and game applications, and truly practical applications have not yet appeared.

5. What is blockchain technology and how does it change business and financial models

What is blockchain technology and how does it change business and financial models? According to reports, since the end of March, the tour guide team led by Yang Feihu has been receiving inquiries from out-of-town individual tourists. "There are many families traveling to Wuhan from out of town. Several families come together by car or by high-speed rail," Yang Feihu said. , Yellow Crane Tower, Hubei Provincial Museum, East Lake Scenic Area is still a check-in place. "It's hard to get a ticket for the Hubei Provincial Museum now, and all the seats for the May Day period have been reserved." He and a number of parents looking for relatives went to Shuidun Town, Zijin County, Heyuan City, Heyuan City. Because Zhang Weiping once confessed that this was the place where Aunt Mei lived, and it was also the place where 8 of the 9 abducted children in the "Aunt Mei Case" were sold.

6. What is blockchain and what is the operating model of blockchain?

Blockchain is sometimes called distributed ledger technology, which is through the use of decentralization and Crypto-hash makes the history of any digital asset immutable and very transparent, leaving no concealment at all. Blockchain operates to allow people to share valuable data in a secure, tamper-proof manner. The most classic ones are the three important concepts of blockchain in the MIT Technology Review.

If you want to fully share public information with everyone, you must rely on the blockchain to maintain integrity and build trust among users.

7. What does blockchain mean?

1. Blockchain is a distributed data storage, point-to-point transmission, consensus mechanism, New application models of computer technologies such as encryption algorithms. Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. Each The data block contains information about a batch of Bitcoin network transactions, which is used to verify the validity of the information (anti-counterfeiting) and generate the next guess block.

2. In layman’s terms, blockchain technology refers to a way for all people to participate in accounting. There is a database behind all systems. You can think of the database as a big ledger. Then who will keep this ledger becomes very important. Currently, whoever owns the system keeps the accounts. Tencent keeps the accounts of WeChat, and Alibaba keeps the accounts of Taobao.

3. But now in the blockchain system, everyone in the system has the opportunity to participate in accounting. If there are any data changes within a certain period of time, everyone in the system can do accounting. The system will judge the person who has the fastest and best accounting during this period and write down his recorded content. Ledger, and the contents of the ledger will be sent to all other people in the system for backup during this period. In this way, everyone in the system has a complete ledger. In this way, we call it blockchain technology.

8. What model is blockchain?

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain (Blockchain) is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. , everyEach data block contains information about a batch of Bitcoin network transactions, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

The biggest problem if such technology is to be put into application is the "impossible triangle problem"

That is, it cannot achieve scalability (Scalability) and decentralization () at the same time. , Security (Security), you can only get two of the three.

Most of the public chain projects currently on the market are difficult to put into use on a large scale.

If there is a public chain project that can solve this problem, it will be a revolution in the blockchain.

Backed by the world’s first and largest encrypted digital currency payment platform and wallet solution with a user base of more than 3 million, Velas (Virtual Expanding Learning, virtual expansion autonomous learning system) is a Artificial intelligence (AI)-optimized neural networks enhance its consensus algorithm, self-learning and self-optimizing public chains, and are committed to improving the security, interoperability, and high scalability of the transfer process and smart contracts. Velas uses AI-enhanced DPoS consensus to achieve complete decentralization without reducing security and transaction speed.

Velas has recently launched the Velas desktop wallet and web wallet

Velas web wallet

Velas web wallet allows users to process transactions within their web browser Cryptocurrency, purchase Velas token VLX, and support easy viewing of detailed history of all wallet transactions. Login credentials have an additional layer of security with two-factor authentication feature.

In addition to the basic functions of creating and restoring wallets based on mnemonic strings, all data stored in the Velas web wallet is encrypted using the RSA-256-CBC algorithm to ensure that user data is not compromised by the system owner. or stolen or misappropriated by external attackers.

A prominent feature of the web version of the wallet is that it supports exchanging VLX tokens for other cryptocurrencies within the wallet, and the wallet will continuously refresh the current VLX exchange rates for all fiat currencies for users’ reference.

Velas Desktop Wallet

Velas Desktop Wallet is a highly secure wallet program suitable for Windows, macOS, and Linux operating systems. The desktop wallet also uses the same mnemonic features and RSA-256-CBC encryption algorithm as the web wallet.

Unlike the web version, which is an online wallet, the Velas desktop wallet allows users to store their wallets directly on their computers, avoiding potential risks of online attacks, including phishing, IP fraud and XSS. It is worth mentioning that both the desktop and web wallets provide users with an automatic lock option to address security issues. If they are not used for a long time, they will need to enter a password when logging in again.OK to revisit.

9. Blockchain application models

I think blockchain applications can be divided into three models:

1) Building an ecological business Collaboration. Abbreviated as C, the focus is Collaboration. The key points are to distinguish the main roles in the ecology and design a role-based incentive mechanism. If the collaboration is done well, it will become a self-ecological organization DAO (de-centralized autonomoue organization). This is the most ideal scenario. Of course, in actual scenarios, complete decentralization is not very realistic. The blockchain ecosystem can have a center, or even be based on mature commercial organizations. By building an ecosystem layer model, the enterprise can be transformed without changing the In the case of core product and service models, the boundaries of interests of the enterprise are downplayed and flexible collaboration is formed with external resources.

2) Establish cross-organizational data and process connectivity. D for short, data sharing is the core of this model. Based on digital sharing, process links are realized to achieve business automation or automated value iteration. This is what is commonly referred to as the combination of blockchain and AI. AI requires iterations of data and automation. Blockchain is the basis for data sharing.

3) Related to asset trading, referred to as T, through digital mapping, a new model of asset trading and management is realized, especially to improve transparency and transaction efficiency. The reduction in credit costs brought by the blockchain can reduce the granularity of transactions, bring better asset liquidity, and can also aggregate and utilize micro-values ​​that could not be cashed in before. The distributed transaction model of the blockchain allows end-to-end transactions to be independently designed and more flexible.

I personally think CDT is the main paradigm of blockchain applications.