What is a block chain

The last two years
The bitcoin was stir fry.
There is another strange noun -- block chain has been more and more popular recently.
A point to be explained first.
Block chain is not the same as bitcoin block chain,
which is the technological foundation behind bitcoin.
I'm sure you've noticed it, too.
The existence of cash in our life is getting lower and lower.
They all become a number of online payment time.
And we are all convinced that these figures do represent wealth.
This is fully illustrated in a trading system
As long as there is a reliable account,
As long as we can understand the accounts,
Even if it's a banknote without an entity,
The trading system is not mess
Moreover, block chain is a way of bookkeeping which is different from traditional bookkeeping.
Traditional online payment
On the surface, it is only a direct transaction between two parties.
But actually, behind every transaction,
there is a third party trading intermediary.
This agency is often a trustworthy authority,
such as government, bank or some big companies.
This intermediary is also a trading center,
which records every transaction information in the system and collate the information into a huge account.
But once the center is maliciously tampered with the hacker's book, the whole system is likely to be in crisis, and there is no such traditional trading center in the block chain trading system
so the whole system has no risk of collapse from the center,
and every transaction in the block chain system is straight.
The two parties involved in the transaction
broadcast the transaction information to the entire trading system,
and many volunteers record the transaction information into
a separate account and broadcast the book to the system.
The result is that the accounts in the block chain system are not one.
A single trading center is in charge of the system,
but every participant in the system is in charge
unless the hacker can attack all the participants in the world,
otherwise the book will not disappear,
but there is a question
how to ensure that the system will not appear in the case of many volunteers at the same time.
All sorts of colorful books,
it depends on the ingenious design of cryptography
in the block chain to produce a new block every time in the block chain
system to store the newly generated transaction information
that volunteers must solve a cryptographic problem to make
the block complete and effective.
Volunteers who solve the problem will write the answers
at the end of the block and broadcast the whole block to the whole system.
Other volunteers receive the news that the problem
has been solved and will stop work to solve the next block problem.
It is worth mentioning that it is difficult for each block.
The answers at the same time will be placed at the beginning of the next block into a part of the puzzle in the next block so that these problems, like the idiom,
string a block into a chain, which is a block chain.
If someone wants to tamper with the content of one of the blocks,
it not only needs to be re cracked on the block.
The new problem and the problem of all the chain will be solved,
which is equivalent to the possibility that this operation is impossible when
there is a lot of people involved in fighting
all the others in the system and completing a doubling of the workload in the same time.
In 2008, this is the model of the bitcoin. Let the block chain technology break out,
which is not limited to digital tokens,
and a data management system block chain technology that is still safe
and reliable without the participation of big money intermediaries
may help solve the problems
in many fields such as the financial property industry
internet and so on to the whole society Change,