Blockchain storage

1. In short, the data of the blockchain is formally stored in the blockchain through the formula algorithm process of the block. All nodes in the whole network express that they accept the block, and the way to express acceptance is to make the random hash value of the block the latest block hash value. Xingqun manufacturing will be extended based on the blockchain.

2. Blockchain distributed storage is a kind of decentralized storage, which does not store data on one or more specific nodes, but scattered storage

3. The information of each block in the blockchain is different, and the generation time and recorded data of each block are different. You can regard the blockchain as a bookkeeping book. Every once in a while, someone will write all the transaction information on the blockchain network to one page of the ledger, page by page, and record all the transactions on the blockchain network in turn according to the time
on the other hand, all nodes (computers in short) participating in the network will store one account book, which is updated in real time. Even if one node fails, the blockchain will not be affected.

4. How to store information on the blockchain: call the API provided by the blockchain platform

generally, the blockchain platform will provide corresponding interfaces, such as RPC, json-rpc, HTTP, etc. of course, the platforms are not the same, and the degree of friendliness is different

some companies specializing in API, such as blockcypher, can provide friendly calling interfaces, and it is not very convenient to write answers on the mobile phone, Search below

as for the storage content, add a point: in addition to the conventional cloud storage, file entities on the file hash record chain also have blockchain based storage schemes, such as IPFs, storej and so on

5. Encryption code. Every few minutes, a new block is generated, which stores different information and consists of different passwords (double keys).

6. It can be
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7. Big data and blockchain are two independent things, which do not have to be used
in fact, only high-level security data can be used for blockchain development, and most companies do not have this requirement. It can be understood that there are so many companies in the world, only a small part needs to use big data technology, and a smaller part needs to use blockchain technology. These two parts can intersect but do not include
for companies that normally use big data, there are non relational databases like HBase, mongodb, hive, Mr, spark and so on in terms of storage and processing, which have nothing to do with blockchain.

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9. Blockchain technology is not omnipotent. At present, it is still in the stage of incompetence. Blockchain technology is not mature at present! It's too early to talk about the application of an immature technology all day long. Some Internet listed companies come out to talk about what blockchain technology breakthroughs they have made, how they plan to apply them, or what proct applications based on blockchain technology they have launched. In my opinion, most of them are pretentious and have no real use. At present, it is not to decide how to apply it, but to study and develop the technical reserve of blockchain. It's hard to do a good job of technical update by parroting!