区块链是由一个共享的，容错的分布式数据库和多节点网络组成，采用了分布式数据库的特征，但是为了达成强数据一致性和不可篡改，牺牲了很多优势，同时也具备了其他特点。区块链有哪些特点?具备以下特点。
The block chain consists of a shared, faulty distributed database and a multi-node network, using the characteristics of the distributed database, but at the expense of many advantages and other characteristics, in order to achieve strong data consistency and irreversibility. What are the characteristics of the block chain?
区块链数据库具备的特点包括：数据仅可通过共识算法以块的形式增加，不可修改或删除，以防止篡改;每个区块至少会包含一个块生成时间和出块签名;所有的交易数据都会被双方签名，以防止抵赖;传统区块链中，新增区块中储存上一个区块的hash，并通过此hash与上一个区块相连在区块链多节点网络中。
The characteristics of the block chain database include that data may be added only in block form through consensus algorithms and cannot be modified or deleted to prevent manipulation; that each block will contain at least one block generation time and an exit signature; that all transaction data will be signed by both parties to prevent rebuttal; and that, in the traditional block chain, the added block contains the hash of the last block, which is connected to the previous block in the multi-point network of the block chain.
所有节点都有浏览区块的权限，但是并不能完全控制区块;所有节点都有验证区块，参与共识，并通过共识增加数据的权利通过区块链可以实现;不依赖授信第三方的数据记录和链上数据溯源;通过peer-to-peer网络的数据通信和可信价值交换;对所有面向系统中心控制者的攻击都有非常强的抵抗能力。
All nodes have the right to browse through blocks, but not fully control them; all nodes have the right to authenticate blocks, to engage in consensus and to add data by consensus can be achieved through the block chain; do not rely on the data records and chain data traceabilitys of third parties to be trusted; communicate data and credible value exchanges through the Peer-to-peer network; and have a very strong resistance to all attacks directed at those in control of the system centre.
一切存在中心化账本的技术都具备区块链应用前景，这是一种效率和信任的交换。但是区块链不存在绝对隐私，会有匿名特性，且过于自由的智能合约带来安全性问题，由于区块链是一个很封闭的生态系统，它的信任只能保证在“链上”的数据本身，而从现实世界到区块链这一段，很难保证是完全可信的。
All technologies where centralized accounts exist have the potential for block chain applications, which is an exchange of efficiency and trust. But there is no absolute privacy in the block chain, there is an anonymous character, and an overly liberal intellectual contract raises security issues. Since the block chain is a very closed ecosystem, its trust can only be guaranteed in the “chain” data themselves, and it is difficult to guarantee complete credibility from the real world to the block chain.
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