哥伦布CAT区块链知识课堂——第十七讲

第十七讲：区块链数据存储的积极影响

一、区块链对数据存储产生积极影响的三种方式
（1）区块链是分散的
区块链不是将数据上传到云服务器或将其存储在单个位置，而是将所有内容分成小块，并将数据分布在整个计算机网络中，是一个缺乏中央控制点的交易数字分类账。每台计算机或节点都有一个完整的分类帐副本，因此一个或两个节点关闭不会导致任何数据丢失。

（2）区块链提供加密和验证
区块链上发生的一切都是加密的，可以证明数据没有被改变。由于其分布式特性，存储者可以检查网络中所有节点上所有分类帐的文件签名，并验证数据是否未更改。如果数据被更改，则签名将变为无效。

（3）区块链不可篡改性
区块链整个网络对数据进行分散，加密和交叉检查。一旦记录在分类帐上，如果没有被注意到并使签名无效，则几乎不可能改变或删除。
每个合法交易都由网络上的多个节点确认。要成功破解区块链，则必须同时攻击大多数节点，虽然技术上可能具有足够的超级计算能力和时间，但远远超出了当今网络犯罪分子的能力。
值得注意的一点是，区块链分散式数据存储完全缓解了影响集中数据库的黑客或其他问题。这是因为分散式数据存储意味着，如果单个节点受损或故障，网络可以继续更新和运行。事实上，要使这种数据存储体系结构甚至面临失败的风险，就必须想象在全球范围内上帝的行为。
二、区块链分散式数据存储如何工作？

区块链的最佳方面是可以与数十年成熟的数据库科学相结合，以实现可变化的分散数据存储。

这可以通过碎片和群集的组合发生。当数据集被划分成逻辑块以供存储和检索以进行重组时，就会发生分片，这与torrents的工作方式非常相似。群是单个节点的组，在这些节点上复制单个数据碎片。如果群中的一个节点发生故障，则复制碎片的其他节点仍可以正常工作。
因此，一个分散的数据库将具有非常优越的性能、可靠性、可伸缩性和安全特性。例如，它将能够在高峰时段持续提供高性能，但不需要在低使用时间提交相同数量的硬件。
最终能够让自己的应用真正“分散化”的应用开发者也不是唯一受益的人。这样的系统可以通过引入单个设备所有者的奖励来完全破坏现有的云存储业务模型。
这是因为与区块链并行运行的动力之一是代币化经济，在这种经济中，代表价值的数字资产通过安全加密共识进行交换。在一个数据存储分散的世界里，使用这种模式开放空闲容量的个人设备拥有者可以得到奖励。当今存在的大型集中寡头垄断可以被灵活的、成本效益高的分布式节点协同工作网络所取代，用户在不需要手动管理服务器和预先支付峰值硬件成本的情况下扩大数据库资源的需求。
英语（English）

Lecture 17: Positive Impact of Blockchain Data Storage

First, three ways that the blockchain has a positive impact on data storage

(1) Blockchain is decentralized
Instead of uploading data to a cloud server or storing it in a single location, the blockchain divides everything into small pieces and distributes the data across the entire computer network. It is a transaction digital ledger that lacks a central control point. Each computer or node has a complete copy of the ledger, so the shutdown of one or two nodes will not cause any data loss.

(2) Blockchain provides encryption and verification
Everything that happens on the blockchain is encrypted and can prove that the data has not been changed. Due to its distributed nature, the storer can check the file signatures of all ledgers on all nodes in the network and verify that the data has not changed. If the data is changed, the signature becomes invalid.

(3) Blockchain cannot be tampered with
The entire network of the blockchain decentralizes, encrypts and cross-checks data. Once recorded on the ledger, it is almost impossible to change or delete it without notice and invalidating the signature.
Each legitimate transaction is confirmed by multiple nodes on the network. To successfully crack the blockchain, you must attack most nodes at the same time. Although technically there may be sufficient supercomputing power and time, it is far beyond the capabilities of today's cybercriminals.
It is worth noting that the blockchain's decentralized data storage completely alleviates hackers or other problems affecting centralized databases. This is because decentralized data storage means that if a single node is damaged or fails, the network can continue to update and operate. In fact, to make this data storage architecture even at risk of failure, one must imagine God's behavior on a global scale.

Second,How does blockchain decentralized data storage work?

The best aspect of blockchain is that it can be combined with decades of mature database science to achieve variable and decentralized data storage.
This can happen through a combination of shards and clusters. Sharding occurs when a data set is divided into logical blocks for storage and retrieval for reorganization, which is very similar to how torrents work. A cluster is a group of single nodes on which a single piece of data is replicated. If one node in the cluster fails, the other nodes that replicate the shards can still function normally.
Therefore, a decentralized database will have excellent performance, reliability, scalability, and security features. For example, it will be able to consistently provide high performance during peak hours, but without the need to commit the same amount of hardware during low usage times.
Finally, application developers who can make their applications truly "decentralized" are not the only ones to benefit. Such a system can completely destroy the existing cloud storage business model by introducing a reward for a single device owner.
This is because one of the motivations for running in parallel with the blockchain is the tokenized economy, in which digital assets representing value are exchanged through secure cryptographic consensus. In a world of decentralized data storage, owners of personal devices that use this model to open up free capacity can be rewarded. The large centralized oligopoly that exists today can be replaced by a flexible, cost-effective distributed node collaborative work network, which allows users to expand database resource requirements without the need to manually manage servers and pay peak hardware costs in advance.

新一代超级公有链
Gcloud分布式区块链云算能平台
哥伦布CAT是新一代高性能的区块链DAPP跨链应用开发平台，基于区块链/分布式节点部署的链网体系，通过分布式众源数据交互协议、跨链交互/事务处理机制、分布式私钥控机制（多维计算、门限密钥共享）、超级共识机制LSMT（分布式AI智慧推荐引擎，神经元网络深度学习优化共识算法）、基于CUDA架的全新区块链软硬结合加速引擎、原生区块链开发语言NAM与NAM VM运行虚拟机、主动式安全数据保护机制、分布式子密钥分发机制等技术创建区块链图灵完备的新一代公有链。建立智能底层基础协议，建区块链分布式自由经济协同网络。
CAT哥伦布的价值网络构筑在多维的分布式自由经济协同网络的基础上，推动智能底层基础协议设施的生态建设与激励社区应用开发，建立分布式协作的智能经济应用多维度并发，从数据的采集分析处理到智能交互，从分布式交易到分布式社群流转，从多维参与到可信环境，结合底层的分布式区块链账本体系，链接分布式节点的链网体系，形成新一代的全球智能经济协同网络的基础设施之一。

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