As a technical approach of official document alteration problem, recently,

"Solving by using block chains"

The columns are scattered in the air.

However, I think "really?"

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Because, unless public sentences are submitted to the block chain system, the "Third Party Approval / Monitoring Process" which is the block chain's effect will not work at all.

Then, I think that (1) nobody will not submit the document to the system, (2) Analog (handwritten) procedures before using the system will increase.

Of course, the block chain has the merit of being able to guarantee the identity even without disclosing the sentence (as it is in ciphertext) (is it?), so I think that it is desirable in terms of confidentiality. However, If you only want the above functions, "digital certification" is enough.

"I wonder if there will be a motivation to install a new block chain system by spending money?"

If I am wrong somewhere, please tell me (really I know that "I do not know").

In that case, we will apologize soon and issue corrections.

(To be continued)