mate云端元宇宙系统开发【1762.0729.119】mate云端元宇宙系统逻辑开发，mate云端元宇宙软件源码开发，合约运行在区块链技术上，这是比特币和大多数加密货币的基础技术and most nodes do not change,this tampering behavior will then be rejected by the whole blockchain to ensure the consensus and security of the whole network.

In the future,based on the Internet platform,blockchain technology will be used to make a new change.Now is the key turning point.If there are any tie points in the blockchain that try to tamper with data privately,and most nodes do not change,this tampering behavior will then be rejected by the whole blockchain to ensure the consensus and security of the whole network.

简单来说，智能合约就是一种把我们生活中的合约数字化，当满足一定条件后，可以由程序自动执行的技术。我们的生活中处处充满着合约，就好比你跟我做了一个约定，我们订好了奖惩措施，但由于种种原因可能没法履行其中的条款，出现了无法履约的情况，而在进入赔付环节，往往会出现毁约，失约，耍赖的情况，11后弄得有理说不清。

From a technical point of view,smart contracts are considered to be web servers,but these servers are not built on the Internet using IP addresses,but on blockchains.Thus,a specific contract program can be run on it.In the future,based on the Internet platform,blockchain technology will be used to make a new change.Now is the key turning point.If there are any tie points in the blockchain that try to tamper with data privately,

什么是去中心化：

去中心化：智能合约可以在脱离第三方信任机构的情况下完成背书，进行点对点交易，不需要任何第三方的介入，通过节点的共同验证、维护、以及后续的保障实施就能完成交易。

透明性与不可违约性：在传统合同关系之下，只有各方当事人知晓合同的条款，这就导致在处理纠纷时，参与方很容易因为缺乏证据而遭受损害。但是智能合约具有高度的透明性，它从缔约到执行过程中所有的记录都会放在网络上，全网任何一个节点都可以对其进行验证和追溯，大大降低了违约行为发生的可能性。

自动性：一旦当前环境满足触发条件后，智能合约就会自动执行，无需任何组织和个人的辅助。

不可篡改性：合约从缔结到执行过程中所有的交易记录都在区块链上有迹可查，无法篡改，除非同时攻击并修改超过51%的节点，但这种方法成本高昂，所以是不具备任何实际可操作性的。

匿名性：虽然在区块链达成的交易，其过程具有很高的透明性，但交易双方却是匿名的，因为智能合约结合零知识证明、环签名、盲签名等技术采取了非对称的加密方式。

Therefore,smart contracts have not been popularized between individuals.Later,with the emergence of blockchain,people found that blockchain and smart contracts are very consistent,because many characteristics of blockchain,such as decentralization and data tamperability,can solve the trust problem between strangers from a technical point of view,which makes the large-scale application of smart contracts possible,The beginning of this stage is marked by the birth of Ethereum.

但是如果我们把约定通过代码的形式，录入区块链中，一旦触发约定时的条件，就会有程序来自动执行，这就是智能合约。

The contract runs on blockchain technology,which is the basic technology of bitcoin and most cryptocurrencies.The input information represents the values assigned by the developer.When these values are met,the contract executes itself according to the rules it is programmed to execute.

通过编写智能合约，执行过程中涉及的实体不再需要依赖第三方去监管和兑现各方的承诺，而是依赖于合约代码的自动执行，只要保证合约执行环境可信，就可以实现各方承诺的正确履行。

Smart contract is a"computer transaction agreement that implements the terms of the contract".All users on the blockchain can see the smart contract based on blockchain.However,this will make all vulnerabilities,including security vulnerabilities,visible and may not be repaired quickly.Such attacks are difficult to solve quickly.For example,in June 2016,the daother vulnerability caused a loss of$50million,and developers tried to reach a consensus solution.Dao's program has a period of delay before hackers delete funds.A hard fork in Ethereum software completed the attacker's fund recovery before the deadline expired.

智能合约，Smart Contract，是一种旨在以信息化方式传播、验证或执行合同的计算机协议。智能合约是一套以数字形式定义的承诺，承诺控制着数字资产并包含了合约参与者约定的权利和义务，由计算机系统自动执行。智能合约程序不只是一个可以自动执行的计算机程序，它本身就是一个系统参与者，对接收到的信息进行回应，可以接收和储存价值，也可以向外发送信息和价值。这个程序就像一个可以被信任的人，可以临时保管资产，总是按照事先的规则执行操作。

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