区块链开发时间多久,区块链开发时间多长

区块链开发是一个复杂的过程，它需要从技术设计、软件开发到最后部署的多个步骤，因此，开发时间会因项目的复杂度而有所不同。

首先，在开发之前，需要对区块链技术有一定的了解，以及具备一定的技术知识，这包括对比特币、以太坊等区块链技术的基本概念，以及智能合约、共识机制等。这个过程需要花费一段时间来学习，而且还需要一定的实践经验。

其次，在开发之前，需要对项目有一个完整的设计，包括技术架构、智能合约、共识机制等，这个过程也需要花费一段时间。

最后，在开发的过程中，需要一步步实现设计，包括编写智能合约、实现共识机制、部署到区块链网络等，这个过程最费时间，而且还需要严格的测试，以确保程序的正确性和安全性。

总的来说，区块链开发的时间取决于项目的复杂度，一般情况下，简单的项目可以在1-2个月内完成，而复杂的项目可能会花费数月甚至数年的时间。因此，在开发区块链项目的时候，应该考虑到项目的复杂度，以便更好地规划时间，更好地完成项目。

A. How much does it cost to develop a blockchain project now?

It also depends on what kind of blockchain APP you are developing. It may be simple It can be done for a few thousand yuan, and the more complicated ones may cost tens of thousands, hundreds of thousands or even hundreds of thousands

B. The time for blockchain to be included in new infrastructure is

2020 April 20th.
On April 20, 2020, at the April regular press conference held by the National Development and Reform Commission, the scope of "new infrastructure" was clarified for the first time and blockchain was included in the new infrastructure.
The inclusion of blockchain in the scope of new infrastructure construction will bring a large amount of project construction needs and capital investment to the blockchain industry in the short term, which will change the sluggish state of the blockchain industry and will be beneficial to National economic development.

C. Which year is called the first year of blockchain strategy

2018 is considered the first year of blockchain. Blockchain is the core supporting technology of the digital cryptocurrency system represented by Bitcoin. The core advantage of blockchain technology is decentralization. It can realize point-to-point transactions based on decentralized credit in a distributed system where nodes do not need to trust each other by using data encryption, timestamps, distributed consensus and economic incentives. Coordination and collaboration, so as to solve the common problems of centralized institutions

D. How long is the approximate block generation time of Bitcoin

10 minutes.

1. Why is the generation time of a Bitcoin block 10 minutes?

It was decided by Satoshi Nakamoto (the inventor of Bitcoin) himself that the block production rate should maintain an average average speed of 1 block every 10 minutes because: The blockchain is estimated to take 10 minutes to complete The latest block is propagated to all nodes around the world. To keep the blockchain properly synchronized. If blocks are produced at a faster rate, some nodes on the other side of the world may not be able to catch up with the latest transaction data fast enough, which may cause the nodes to no longer align correctly, resulting in "block breaks," which is a block Chains must be avoided as much as possible to maintain basic measures of safety.

2. Then why is it not safe if the time is short?

If you change it to 1 minute, a problem arises - we assume that any new block takes 2 minutes to propagate across the network. Then, if a block is generated in 10 minutes, the probability that a new block will be generated by a node that did not receive it during the propagation process is not high, because after all, it is only 1/5 of the average block generation time of the entire network. However, if one block is generated every minute, the problem will be big - assuming the block transmission speed is average, then it is almost certain that by the time the newly generated block is transmitted halfway, there will be no network that has not received the block yet. It is very likely that a new one has also been generated.

As a result, a bifurcation was generated. This situation is very likely to occur, that is to say, there will be at least one fork in this network for a long time. Such a network is obviously insecure because the assumption of Bitcoin is "If you want to cheat, you have to beat all competitors, which is 51% of the computing power of the entire network. "However, if there are more than two forks in the network all year round, it means that the computing power of the entire network is shared. Therefore, if you want to cheat, you only need to win half of the network, that is, 25% of the computing power. Obviously, this reduces the reliability of Bitcoin.

E. The first birth time of the blockchain

If it refers to the first time it was The blocks that were mined were on January 3, 2009, when Satoshi Nakamoto mined the first block on a small server in Helsinki, the Netherlands, which is the so-called "genesis block". For information about blockchain, you can learn about it at Crypto Finance mimacaijing.

F. What is the origin of blockchain

Blockchain originated from Bitcoin. On November 1, 2008, a person who called himself Satoshi Nakamoto Published the article "Bitcoin: A Peer-to-Peer Electronic Cash System", which elaborated on the architectural concept of an electronic cash system based on P2P network technology, encryption technology, timestamp technology, blockchain technology, etc., which 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.

In recent years, the world's attitude towards Bitcoin has been ups and downs, but blockchain technology, one of the underlying technologies of Bitcoin, has received increasing attention. In the formation process of Bitcoin, blocks are storage units one by one, recording all communication information of each block node within a certain period of time.

The links between each block are realized through random hashing (also called hash algorithm). The latter block contains the hash value of the previous block. With the expansion of information exchange, a block Continuing with one block, the result is called a blockchain.

(6) Extended reading of blockchain development time:

Characteristics of blockchain:

1. Decentralization . Blockchain technology does not rely on additional third-party management agencies or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes self-verification, transmission and management of information through distributed accounting and storage. Decentralization is the most prominent and essential feature of blockchain.

2. Openness. The foundation of blockchain technology is open source. In addition to the private information of the transaction parties being encrypted, the data of the blockchain is open to everyone. Anyone can query the blockchain data and develop related applications through the public interface. Therefore, the entire System information is highly transparent.

3. Independence. Based on consensus specifications and protocols (similar to various mathematical algorithms such as the hash algorithm used by Bitcoin), the entire blockchain system does not rely on other third parties. All nodes can automatically and securely verify and exchange data within the system.No human intervention is required.

4. Security. As long as you cannot control 51% of all data nodes, you cannot manipulate and modify network data at will. This makes the blockchain itself relatively safe and avoids subjective and artificial data changes.

5. Anonymity. Unless required by legal regulations, technically speaking, the identity information of each block node does not need to be disclosed or verified, and information transfer can be carried out anonymously.

G. The History of the Birth of Blockchain

Many people will be instinctively intimidated when they hear the word "blockchain" and think it is something mysterious. Or a technology that has nothing to do with me.

2018 is the first year of blockchain technology. In the past Spring Festival, blockchain has become really popular. The "three o'clock sleepless zone" of the first blockchain community "Blockchain", articles from major media "How to introduce blockchain to seven aunts and eight aunts", novices from all walks of life are ready to enter the currency circle and try their best, etc.

We know that the Internet has connected the world over the course of decades. People don’t talk about whether the world is flat, because as long as you have a computer or a mobile phone, you are closely connected to the entire world. Elites are accustomed to calling the past Internet era the information Internet era.

With the advent of blockchain technology in 2008, humans were caught off guard and drawn into the world of bits. In the future, no matter whether you understand whether you know what blockchain technology is? Do you understand how digital virtual currency is implemented? They have all been coerced into the second era of the Internet: the era of value Internet. What you don’t know is how blockchain technology was born?

David Chaum, the "bishop" figure of cypherpunk in the 1980s and 1990s, invented the cryptographic anonymous cash system Ecash in 1990. Chaum believes that a distributed, truly digital cash system should encrypt people’s privacy.

British cryptographer Adam Baker invented Hashcash in 1997, which used the Proof of Work system. The proof-of-work system is one of the core concepts of Bitcoin.

In 1997, Harper and Stonitta proposed a protocol that uses timestamps to ensure the security of digital files. This protocol has also become one of the prototypes of the Bitcoin blockchain protocol. The biggest feature of timestamps is that when a virtual currency is traded, it is timestamped and it cannot be changed.

Cryptozoology expert Dai Wei invented B-money in 1998. B-money emphasizes point-to-point transactions and immutable transaction records, and every trader in the network keeps track of transactions.

In 2004, Hal Finney, a top developer at the PGP encryption company, pushedThe electronic currency "Crypto Cash" was launched, which uses a reusable proof-of-work mechanism (RPOW).

But their single invention and idea are still not enough to become a world-class virtual currency. Ecash declared bankruptcy in 1998; the proof-of-work system cannot guarantee whether digital currencies have been traded many times; the technical protocol of timestamps is only used on a small scale by the government; in the B.money system, David did not solve the problem of ledger synchronization; finally Halfini's idea is still not enough to become a world-class virtual currency.

In 2008, when all technical conditions were mature and time conditions were mature, a god-level figure was still needed to answer a question: why did the previous virtual currency pioneers fail? The name of the person who answered this question is Satoshi Nakamoto.

He believes that the most important reason for the failure of previous virtual currencies is that they all have a centralized structure, and all transaction data will be aggregated into the company's data center, which is no different from government-issued currencies. Once the company that backs the virtual currency goes bankrupt, or the central server of the general ledger is compromised by hackers, the virtual currency will face the risk of collapse. Satoshi Nakamoto optimized David Chaum's Ecash, integrating timestamps, proof-of-work mechanisms, asymmetric encryption technology, and the structure of UTSO, and finally invented Bitcoin.

It can be seen that blockchain is not a single technology, it is a collection of a series of above-mentioned technologies. Bitcoin is just a typical example of the first large-scale application of blockchain technology. In the future, blockchain technology can be applied to many fields such as financial services and social life.