Blockchain three innovation competition
In 2017, blockchain technology is undoubtedly a new wave of technology after the mobile Internet. From the three dimensions of technology implementation, commercial application and commercial realization, blockchain is expected to become a new technology after the mobile Internet, which will once again subvert people's digital lifestyle. At present, the new technology wave of blockchain fascinates more and more developers. Therefore, Neo, a non-profit community blockchain project, joins hands with Microsoft to open the first domestic blockchain developer competition, aiming to proce more excellent applications based on Neo blockchain and Microsoft's development environment and tools, so as to form a strong application ecology for blockchain developers
"People are using blockchain technology in a more interesting way as the basis for 'decentralized applications' rather than just applications like financial technology and cryptocurrency," said Mike Mason, technical director of the office of chief technology officer of ThoughtWorks, a global software consulting firm. You know, "blue ocean" has never lacked players. Some Internet companies are trying their best to land on the beach, and have established the blockchain instry market as an inevitable choice for development. In China, netxin technology, a wholly-owned subsidiary of Xunlei, has used blockchain technology in the innovative cloud computing mode - "shared computing"
earlier, Xunlei implanted the concept of sharing economy into the field of cloud computing, and created an original" sharing computing "mode. By collecting users' idle computing resources, Xunlei transformed them into innovative cloud computing services for enterprises, On the one hand, it can effectively solve the social contradiction between the shortage of social computing resources and the high cost of computing, on the other hand, it can greatly rece the operating costs of enterprises. In August 2017, Xunlei launched a new sharing economy intelligent hardware player cloud. Its significance lies in that in the shared computing ecosystem, Xunlei joined the blockchain technology to issue player coins to users who share idle resources such as bandwidth, storage and computing power through the player cloud intelligent hardware
playcoin is a digital asset created based on blockchain technology in the thunderbolt shared computing ecosystem. With the launch of playcoin, Xunlei has become the pioneer of blockchain technology in China, and also has many advantages in its shared computing. Firstly, playcoin, based on shared computing and blockchain technology, ensures that the payment and income of users' shared computing resources and content are equal through smart contracts, which cannot be denied; Secondly, through decentralized accounting records, all transactions are true and transparent; Third, register users' right and modify records through blockchain to protect users' right from infringement
in fact, blockchain technology has strong advantages in network security, cross-border payment and other fields, and also has important value for building a community of destiny in cyberspace. On October 31, 2017, Chen Lei, CEO of Xunlei group and CEO of netxin technology, put forward the all in blockchain strategy and announced that Xunlei will increase investment in blockchain technology starting from the player cloud to explore the application of cloud computing and blockchain technology integration. On the day of the press conference, playmaker cloud also signed a right content distribution agreement with 4K garden, trying to integrate shared computing and blockchain technology to provide a platform for right distribution and content distribution. In the future, blockchain will generate more application scenarios in thunderbolt's shared computing ecosystem. Xunlei's innovative attempt may give more inspiration to developers of other blockchain technology applications
at the same time, as a leading enterprise in the blockchain application market, Xunlei is also actively guiding the healthy development of blockchain applications, insisting on not doing ICO, not going to the third-party trading platform, and severely cracking down on the third-party platform for illegal trading of customer coin, and cracking down on speculation and speculation through such measures as the real name system of customer Coin Wallet. Therefore, blockchain application developers should also abide by the law and avoid risks
based on the blockchain technology, Xunlei's "player cloud" takes the lead in building the C-end application of China's blockchain technology, which promotes China's blockchain technology to participate in the ecological development of global blockchain and creates important value in the development of digital economy“ The development history of the Internet is a history of innovation and Entrepreneurship of Internet talents. " The development of blockchain also needs a lot of talent support. We are looking forward to the birth of "blockchain +" Application in the first domestic blockchain developer competition
1. Germination stage: the real germination stage of blockchain was from 2007 to 2009. In 2008, a Japanese American with the pseudonym of Nakamoto first expounded a new fantasy report on electronic money in the form of a synonym on the cryptography discussion group, and bitcoin came out. As early as 2007, Nakamoto began to explore a series of new technologies to create a new currency. On October 31, 2008, bitcoin white paper was released, and on January 3, 2009, bitcoin system officially began to operate
the main technologies supporting bitcoin system include hash function, distributed ledger, blockchain and asymmetric encryption; It can be seen that these technologies build the initial version of the blockchain, and it can also be said that the blockchain is the underlying technology of bitcoin. During the three years from 2007 to 2009, bitcoin was an experimental stage in which a very small number of people participated, and the real commercial activities had not really started
2. "Geek" niche stage: here, "geek" refers to people who are crazy about Internet technology and take technological innovation as fashion and life. On February 6, 2010, the first exchange of bitcoin appeared. On May 22 of the same year, someone bought two hamburgers with 10000 bitcoins. On July 17 of the same year, the exchange Mt. GOx was established, marking the official inflow of bitcoin into the market. Nevertheless, the only people who can really understand and enter the market to participate in bitcoin trading are geeks who are keen on Internet technology. They discuss bitcoin technology on the forum, mine for bitcoin on their own computers, and then buy and sell bitcoin on Mt. GOx. Now these geeks have become billionaires
3. Market brewing stage: the price of bitcoin was $13 at the beginning of 2013, but on March 18 of the same year, the government of Cyprus closed the bank and stock market e to the financial crisis, which made the price of bitcoin soar, and the highest price rose to $266 in April. On August 20 of the same year, the German government confirmed the currency status of bitcoin. On October 14, China network announced the opening of bitcoin payment channel. In November, the US Senate hearing also confirmed the legitimacy of bitcoin. On November 19, the price of bitcoin rose to US $1242, forming a new high. Nevertheless, the foundation for blockchain to enter the mainstream social economy is not yet available, and the soaring price of bitcoin is only e to over optimistic expectations. The containment of China's banking system, the collapse of Mt. GOx and other events made the price of bitcoin continue to fall. At the beginning of 2015, the price of bitcoin has dropped below $200. From 2013 to the beginning of 2015, the public began to understand bitcoin and blockchain
4. The mainstream period of blockchain: on June 23, 2016, the United Kingdom left the European Union, the fifth nuclear test of North Korea in September, Trump's election in November and other events, the uncertainty of the world's mainstream economy led to the recovery of bitcoin with the function of risk aversion. The market demand was large, and the increase of trading volume made the price of bitcoin soar from $400 in 2016 to $20000 in 2017, The wealth effect of bitcoin and the transaction overflow caused by network congestion of bitcoin have led to the outbreak of other series of virtual currencies, as well as a variety of blockchain applications, resulting in the emergence of a large number of blockchain assets that are 100 times, even 1000 times and 10000 times, which has aroused the crazy pursuit of the world, Subsequently, the Chicago Mercantile Exchange launched bitcoin futures trading, marking that bitcoin has officially entered the mainstream investment proct series, and bitcoin and blockchain have entered the global attention
5. Instry landing stage: after the market frenzy in 2017, the virtual currency and blockchain have been adjusted in terms of market, supervision, cognition, etc. in 2018, returning to rationality. In 2017, many blockchain projects that follow the blockchain technology will graally die out with the cooling of the market, and the projects with real blockchain applications will be initially implemented. 2018 is not only the first year of the blockchain, but also a gold rush period for the blockchain. After the waves wash away the sand, what remains is relatively good gold
from the perspective of the history of blockchain development, blockchain technology is not yet mature and is currently in the growth period. The specific practical application of blockchain is only used in the financial field. It still needs a long way to go to apply blockchain from other instries. However, we should grasp the trend of blockchain and actively learn from the new field of blockchain.
1. Blockchain links
as the name suggests, blockchain is a chain composed of blocks. Each block is divided into block head and block body (including transaction data). The block head includes the prevhash value (also known as hash value) of the previous block used to realize the block link and the random number (nonce) used to calculate the mining difficulty. The hash value of the previous block is actually the hash value of the head of the previous block, and the random number calculation rule determines which miner can obtain the right to record the block
2. Consensus mechanism
blockchain is accompanied by the birth of bitcoin, which is the basic technology architecture of bitcoin. Blockchain can be understood as an Internet-based decentralized accounting system. A decentralized digital currency system like bitcoin requires the consistency of accounting of honest nodes without a central node, which needs blockchain to complete. Therefore, the core of blockchain technology is a consensus mechanism to reach a consensus on the legitimacy of transactions between indivials without mutual trust without central control
there are four main types of consensus mechanisms in blockchain: pow, POS, dpos and distributed consistency algorithm
3. Unlocking script
script is an important technology to realize automatic verification and contract execution on blockchain. Every output of every transaction does not point to an address in the strict sense, but to a script. A script is like a set of rules that constrain how the receiver can spend the asset locked on the output
the validation of transactions also depends on scripts. At present, it depends on two kinds of scripts: Lock script and unlock script. Locking script is a condition added to the output transaction, which is realized by a script language and located in the output of the transaction. The unlocking script corresponds to the locking script. Only when the conditions required by the locking script are met can the assets corresponding to the script be spent, which is located in the input of the transaction. Many flexible conditions can be expressed by script language. Interpretation script is similar to the "virtual machine" in our programming field, which runs in every node of the blockchain network in a distributed way
4. Transaction rules
blockchain transaction is not only the basic unit of a block, but also the actual effective content recorded by the blockchain. A blockchain transaction can be a transfer, or the deployment of smart contracts and other transactions
as far as bitcoin is concerned, a transaction refers to a single payment transfer. The transaction rules are as follows:
1) the input and output of the transaction cannot be empty
2) for each input of a transaction, if its corresponding utxo output can be found in the current transaction pool, the transaction will be rejected. Because the current transaction pool is the transaction not recorded in the blockchain, and each input of the transaction should come from the confirmed utxo. If it is found in the current trading pool, it is Shuanghua trading
3) for each input in a transaction, the corresponding output must be utxo
4) each input unlocking script must verify the compliance of the transaction together with the corresponding output locking script
5. Transaction priority
the priority of blockchain transaction is determined by the blockchain protocol rules. For bitcoin, the priority of a transaction to be included in a block is determined by the time when the transaction is broadcast to the network and the amount of the transaction. With the increase of transaction broadcast time on the network and the increase of transaction chain age, the priority of transaction will be improved and eventually be included by the block. For Ethereum, the priority of the transaction is also related to the transaction fee that the publisher is willing to pay. The higher the transaction fee that the publisher is willing to pay, the higher the priority that the transaction is included in the block
6. Merkle proof
the original application of Merkle proof is bitcoin, which was described and created by Satoshi Nakamoto in 2009. Bitcoin blockchain uses Merkle proof to store transactions in each block. So that the transaction can not be tampered with, but also easy to verify whether the transaction is included in a specific block
7. RLP
RLP (recursive length prefix) is one of the main encoding methods of object serialization in Ethereum. Its purpose is to encode the sequence of arbitrary nested binary data.
from cable TV companies to retail enterprises, all walks of life are trying their best to keep their most precious property: monopoly. The traditional view is: "if you control the entrance and channel, then consumers have little choice."
however, we see that companies like Netflix and Amazon break the old pattern and provide more choices for our lives. Similarly, in the field of digital currency and finance, some of the largest financial institutions are facing serious challenges
it is expected that decentralized business and demand will rise in 2019, which will provide more opportunities for successful blockchain companies. At the same time, but this opportunity also means risk. If, as in 2018, the founders or entrepreneurs of blockchain companies make too many promises, and the projects are suspected of exaggeration, they may lose their reputation and first mover advantage< For decades, the world's largest financial institutions have controlled most of the financial systems of the global economy
however, blockchain companies have begun to gain fair competition opportunities through access to banking services and real-time payment. In 2019, the blockchain instry will enter the field of securities, loans and other derivative financial procts in addition to financial payment. Companies like securitize *, Dharma, dydx, compound finance and the ocean are committed to building decentralized finance
in the past few years, mobile application companies such as rap, gojek and paytm have been expanding their business, with payment, investment, remittance, loan and insurance procts emerging. As many Asian economies move from cash to the digital economy, they are rapidly attracting users of new banks
Asian regulators have provided clearer guidelines for blockchain and digital currency projects because they believe that blockchain is a catalyst for economic growth and may become a sunrise instry in the future
in addition, more than 80% of digital currency trading volume comes from Asia, so digital currency investors are eager to establish reliable infrastructure. If Grab, Gojek and Paytm can benefit from digital money investors, they will begin to support the block chain more, providing awesome experience for payment, loans and other derivatives.
back to the original heart
in the past few years, the digital currency instry has deviated from its original financial vision, which is well illustrated in Nakamoto's bitcoin white paper. Just like the prosperity and depression of the Internet, almost all imaginable real cases, such as the logistics chain of tracking the freshness of flowers, are attracting people's attention with the hot word of blockchain
however, just like the early Internet, real landing cases must match the development stage of technology
Netflix, for example, could not successfully stream TV programs in 2000, when less than 1% of people used broadband. In the past few years, it has become more and more obvious that payment is a real case of massive application of blockchain
in 2019, blockchain companies will develop rapidly in decentralized financial applications (such as loans and insurance procts) based on the smart contract platform
I always find that the best application landing occurs in specific market segments. As long as blockchain companies can focus on procts that solve specific problems, we will see more competitive and innovative blockchain companies
and that's a good thing for the instry as a whole.
China has started to establish a national standard for blockchain to promote the construction of blockchain standard system from top-level design, which is expected to be completed by the end of 2019 at the earliest
in this regard, Zhao Wu, founder of Beijing Huashun Xin'an Technology Co., Ltd., also said that although the blockchain has disruptive technology potential, we must realize that the blockchain is still in its infancy, far from reaching the stage of subverting the world
Yu Kequn stressed that the independent and controllable blockchain network is intended not to be controlled by others technically, but also to promote the healthy development of blockchain. Security is the future life of blockchain. Only its own security can make blockchain technology landing. This requires us to pay equal attention to the development of blockchain technology and its security attributes, even ahead of timein this regard, Li Ming also said that an important part of the standard is the information security standard, which can also see the importance of security to blockchain technology. He also pointed out that the development of blockchain standards does not mean that it will rapidly promote the development of the instry, but give the instry certain guidance. Previously, China has suffered a lot in terms of international intellectual property rights and standards. In terms of blockchain, China has formed more than 200 patents in terms of international blockchain, and even stands in the forefront of world technology. Therefore, we also need to firmly grasp our right to speak
content source: Xinhuanet
treaty
chain in English. There is a branch in Shenzhen called time treaty blockchain Technology (Shenzhen) Co., Ltd. Time
treaty
chain (TTC), for short, is committed to building a decentralized, open-source, compound contract function chain ball ecological platform with block identity technology as the core. The initiative of block identity aims to realize the global block identity traffic ecology of (public chain +
alliance chain + private chain) * side chain in the digital world.