Blockchain uses cryptographic methods to ensure that existing data cannot be tampered with.The central point of this section is asymmetric encryption.Asymmetric encryption has two keys.One is a public key and the other is private key.If you encrypt it with one of them,you can only decrypt it with another vice versa.Another important property is that if you give ciphertext ,plaintext and one of the keys,you still cannot solve the other key.
The blockchain is a distributed database placed in a non-secure environment.Most of the mature blockchains are currently databases.For example,Bitcoin is a distributed ledger and the books are actually data.
To use traditional assets for trading,it requires a lot of reliance on third parties.It requires investment banks,banks and securities companies to pack and endorse and the cost are extremely high.With blockchain these are not problems.The blockchain's value-passing properties also naturally solve the problem of payments and there are genes that support global payments.From the above perspective,the blockchain itself is a super platform.
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