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Abstract: The development of blockchain to this day has already extended from the initial financial transactions to all application projects that require intermediaries to guarantee or authenticate, such as housing transactions, car sales, etc., and even through the connection of APIs, blockchain technology can be combined with other The application service content is integrated, thereby accelerating the production of various innovative applications, and even helping to accelerate the development of Internet of Things applications.
The development of blockchain to this day has already extended from the initial financial transactions to all application projects that require intermediaries to guarantee or authenticate, such as housing transactions, car sales, etc., and even through the connection of API, blockchain technology and other application services The content is integrated, thereby accelerating the production of various innovative applications, and even helping to accelerate the development of Internet of Things applications.
The earliest application of the blockchain is Bitcoin. The blockchain is a series of data blocks associated with cryptographic methods. It is like a database ledger, and the ledger also contains all transaction records since Bitcoin, including Multiple block records, each block corresponds to a part of the transaction, and records the hash value of the previous block, forming a chain-like data structure.
Many experts believe that the advent of blockchain technology addresses the missing link in IoT security, privacy and reliability issues. It can be used to track billions of interconnected devices, facilitate transactions and collaborative processing between devices, and save a lot of cost for the IoT industry. This decentralized approach will eliminate single points of failure and create a more reliable of devices running the ecosystem. At the same time, the encryption algorithm used by the blockchain can also bring higher privacy to consumer data.
The advantage of blockchain is that it is public, and every network participant can see the block and the transaction information stored in it. However, this does not mean that everyone can see your actual transaction content, which is protected by your private key.
Blockchain is decentralized. Therefore there is no single authority that can approve transactions or set special rules for the receipt of transactions, which means that there is a huge trust between participants, so all network participants must reach consensus to receive transactions.
More importantly, the blockchain is very secure, this kind of data can only be continuously expanded, and the previous records cannot be changed. And the ledger used by the blockchain is tamper-proof and cannot be manipulated by criminals. This ledger is not located in a specific location and cannot be attacked on middlemen because no single communication thread can be intercepted. .
区块链可以应用到物联网保证信息安全,比如设备仪器的制造商，可以借助区块链技术追溯到每一项零组件的生产厂商、生产日期、制造批号乃至于制造过程的其他信息，以确保整机生产过程的透明性及可塑性，有效提升整体系统与零组件的可用性，继而保障设备仪器运作的安全性。
区块链特有的共识机制，通过点对点的方式是各个设备之间连接起来，而不是通过中央处理器，各个设备之间保持共识，不需要中心验证，这样就保证了当一个节点出现问题之后，不会影响网络的整体数据安全性。
现在，随着区块链技术的不断发展和升温，深圳北航物联网研究院（www.buaaiot.org）认为它也将以自己独特的方式，去改变去融合到各个行业。区块链技术的诞生，让各类的算法更高效，其去中心化的原理以及分布式的计算规则，让万物连接秒算，并且防止了黑客对于数据的攻击，各类资产可以实现在区块上登记、交易并数据永远不可篡改，不可逆，这无形的魅力让各类资产汇聚在区块上。