Smart contracts represented by Ethereum are considered to be the product of blockchain 2.0.
Blockchain can be seen as an operating system, and Bitcoin can be seen as the pearl growing on it.
Blockchain development can be seen as developing a system by itself, such as ios and android operating systems.
Based on Ethereum, smart contracts can be developed, which can be regarded as an already formed operating system, such as android.
The Ethereum platform encapsulates the underlying blockchain technology, allowing blockchain application developers to develop directly based on the Ethereum platform. Developers only need to focus on the development of the application itself, which greatly reduces the difficulty.
On this operating system, we can develop our own applications, such as an anonymous transaction system.
All installed and deployed computer nodes of Ethereum applications will generate a corresponding Ethereum virtual machine.
The virtual machines of these nodes make up the so-called decentralized nodes of the blockchain.
Each transaction of an application based on Ethereum needs to consume a certain amount of computing power and storage, so Ethereum issued its own ETH, and these upper-layer applications need to purchase a certain amount of ETH as compensation for computing power and storage consumption.
Nodes on the network get a certain amount of ether as compensation through proof-of-work.
The test environment development Ethereum can use programming languages similar to js or py, but in real scenarios, it is best to use distributed environment-friendly programming languages such as go and c++.
Therefore, developing a contract system on the blockchain is a good way to cut leeks, develop one and then release the corresponding token, and issue a new token with the same underlying technology.