What is the length of blockchain traceability QR code
The three characteristics of blockchain are well known, that is, decentralization, transparency and non tampering. The tamper proof feature makes blockchain used in many places. Such as proct traceability, privacy protection and so on
because the proction process it traces back to is artificially uploaded, so even if it is tamperable data, the authenticity of the data can not be guaranteed, and the substantive problem still can not be solved
generally speaking, although blockchain has brought great benefits, it is not perfect after all. However, blockchain technology has promoted the development of the times, and I believe its future is worth looking forward to
four characteristics of blockchain application:
first, decentralization: blockchain consists of many nodes to form an end-to-end network, and there is no centralized equipment and management organization
Second, tamper proof: the modification of the database by a single node or even multiple nodes cannot affect the database of other nodes, unless more than 51% of the nodes in the whole network can be controlled to modify at the same time, which is almost impossible
Third, transaction transparency: the operation rules of the blockchain are open and transparent, and all the data information is also open, Each transaction is visible to all nodes
4. Traceability: each transaction in the blockchain is connected with two adjacent blocks by password method, so it can trace back to the origin and development of any transaction.
as of April 18, 2020, the price of Leyte is about 305 yuan
litecoin (LTC) is an improved version of digital currency inspired by bitcoin (BTC). It was designed and implemented by a programmer who once worked in Google. It was released on November 9, 2011. Lightcoin and bitcoin have the same implementation principle in technology, but the creation and transfer of lightcoin is based on an open source encryption protocol, which is not managed by any central organization
lightcoin is a kind of network currency based on "peer-to-peer" technology, and it is also an open source software project under MIT / X11 license. It can help users make instant payments to anyone in the world. Lightcoin was designed and implemented by a former Google programmer (Li Qiwei). It was released on January 9, 2011
lightcoin is an improved digital currency inspired by bitcoin. The technical principle of lightcoin is the same as that of bitcoin. It also adopts a decentralized architecture, without any central organization control, and the new currency issuance and transaction payment transfer are based on open source encryption algorithm. All these are imitations of the design principle of bitcoin
however, lightcoin tries to improve the shortcomings that bitcoin has shown before, such as slow transaction confirmation, less total upper limit, workload proof mechanism leading to the emergence of large ore pool and so on. Lightcoin aims to improve bitcoin. Compared with bitcoin, lightcoin has three significant differences
first, the lightcoin network can process a block every 2.5 minutes (instead of 10 minutes), so it can provide faster transaction confirmation. Second, the lightcoin network is expected to proce 84 million lightcoins, four times the amount of money issued by bitcoin network
thirdly, the scrypt encryption algorithm first proposed by Colin Percival is used in lightcoin's workload proof algorithm, which makes it easier to mine lightcoin on ordinary computer than bitcoin. Each Leyte is divided into 100000000 smaller units, defined by eight decimal places
the purpose of proct anti-counterfeiting is to identify the authenticity of goods and prevent counterfeiting. And proct traceability is to use blockchain technology to check the source information of goods. Cryptography focuses on blockchain information.