Blockchain smart contract stub secret key

1. In Chongqing jinwowo analysis blockchain technology, the smart contract is as follows:
this clause is recorded in computer language rather than legal language, which refers to the combination of electronic contract and blockchain technology. When a pre programmed condition is triggered, the smart contract executes the corresponding contract terms.

2. Smart contract can be simply understood as a piece of code written on the blockchain, which is event driven, has dynamic state, obtains multi-party recognition, and can automatically process the information on the chain according to the preset conditions. Once an event triggers the terms in the contract, the code will be executed automatically. The biggest advantage of smart contract is to use program algorithm to replace human arbitration and contract execution
smart contract is a contract that uses computer language instead of legal language to record terms. Once it is written, it can be trusted by users. The terms of the contract cannot be changed, so the contract cannot be changed. If the procere meets the conditions, it will be carried out, and there is no human interference to ensure absolute fairness
three technical features of smart contract
● data transparency
all data on the blockchain are open and transparent, so the data processing of smart contract is also open and transparent, and any party can view its code and data at runtime
● can't tamper
all data of the blockchain itself can't be tampered, so the code of the smart contract deployed on the blockchain and the data generated by the operation can't be tampered, and the node running the smart contract doesn't have to worry about malicious modification of the code and data by other nodes
● permanent operation
the number of nodes supporting the blockchain network often reaches hundreds or even thousands. The failure of some nodes will not lead to the stop of the smart contract, and its reliability is close to permanent operation in theory, which ensures that the smart contract can be as effective as the paper contract at all times.

3. With the breakthrough of blockchain technology, the smart contract has a chance of rebirth. The smart contract based on blockchain technology can not only give play to the advantages of smart contract in cost efficiency, but also avoid the interference of malicious behavior on the normal execution of the contract. The smart contract is written into the blockchain in digital form, and the characteristics of blockchain technology ensure that the whole process of storage, reading and execution is transparent, traceable and unchangeable; At the same time, the strong security consensus mechanism does not need the intervention of three parties: a set of state machine system is constructed by the consensus algorithm of the blockchain, so that the intelligent contract can run efficiently.

4. Jinwowo analysis: simple value transmission enables digital assets to circulate freely on the blockchain.

5. Chongqing jinwowo analyzes the role of smart contract in blockchain technology as follows:
three characteristics of smart contract in blockchain can be summed up:
1) decentralization. It doesn't rely on the centralized server and runs automatically through the network nodes
2) good trust mechanism. The crisis of trust is greatly reced, and it is not necessary to consider whether the participation is trustworthy
3) high degree of autonomy. Once the condition is triggered, the contract will be executed automatically without interference

6. From a technical point of view, smart contracts are considered to be network servers, but these servers are not set up on the Internet using IP addresses, but on the blockchain (chain Nova). So that you can run specific contract programs on it. But unlike web servers, smart contracts can be seen by everyone, because the code and state of these smart contracts are on the blockchain (assuming that the blockchain is public). Moreover, unlike web servers, smart contracts do not rely on a specific hardware device. In fact, the code of smart contracts is executed by all devices involved in mining (this also means that the computing power to enter a single contract is limited, although the automatic adjustment of mining difficulty will adjust this effect). Smart contract is an assembly language programmed on blockchain. Usually people don't write stanza code by themselves, but they compile it from a higher-level language, such as solid, a special language similar to JavaScript. These bytecodes do provide guidance for the functionality of the blockchain, so the code can easily interact with it, such as transferring cryptography currency and recording events. The execution of the code is automatic: either it is successfully executed, or all state changes are revoked (including the information that has been sent or received from the current failed contract) This is very important because it avoids partial execution of the contract.

7. The security of data in Chongqing jinwowo smart contract is as follows:
the data of smart contract can not be deleted or modified, but can only be added. The history of smart contract can be traced, and the cost of tampering with the contract or breach of contract will be very high, because its evil behavior will be forever recorded and widely known.

8. In a word, the blockchain technology has realized the smart contract. Specifically, you can go to the app of lianpai community to learn about it. The lecturer in the app said that the blockchain related content is very simple, easy to understand and professional