Homework on EVM

[Maia]

1. It reads and executes Smart Contracts. It ensures no malicious activity happens.
2. It can read Bytecode format of instructions.
3. The programming language Solidity compiles the Bytecode to be read by the Ethereum virtual machine.
4. Because Bitcoin programming language (Script) is not turing complete.
5. It means any possible algorithm can be implemented with it.

[jeffw]

1. The EVM communicates all of the smart contracts to the CPU’s of all the nodes on the Etherium network.

2. They are written in bytecode

3. Smart contracts are first written in Solidity then are compiled into Bytecode which is what gets put into the EVM

4. It would cripple the blockchain because of it’s size and complexity.

5. Something that can execute any type of command.

[Brigadoon777]

1. What does the EVM do?
EVM is Ethereum virtual machine, reads and executes smart contracts, will also tell CPU to execute, until they reach a final consensus

2. What is the format of the instructions that the EVM can read?
Byte code which is compiled from programming languages written in solidity or viper

3. What is the relationship between the programming language Solidity and Bytecode?
Solidity translates the code to bytecode, EVM reads byte code

4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
Its scripting language is not turing complete.

5. What is a Turing Complete programming language?
It means you can program anything you want, anything you can think of . Turing complete language also allows loops, which allows a programmer to tell software to do one thing several times.

[luxamir]

1. What does the EVM do?

• Ethereum Virtual Machine (EVM) reads and executes smart contracts and acts as a security layer that protects the blockchain network from malicious contracts.

2. What is the format of the instructions that the EVM can read?

• Byte code such as Solidity.

3. What is the relationship between the programming language Solidity and Byte code?

• Solidity is compiled and transform into byte code.

4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?

• Bitcoin does not use a Turing complete programming language unlike ethereum.

5. What is a Turing Complete programming language?

• A program language that can solve any complex problem by allowing loops in the program.

[Cryptoprieto]

1. Ethereum Virtual Machine, where it interprets and executes the smart contracts.
2. EVM can read Byte-Code.
3. Solidity program compiled into bytecode and the bytecode that runs through the EVM on the CPU of a node which then executes the instructions in the Smart Contract that comes up with a result.
4. Because the programming language that uses BTC (script) is not turing complete.
5. Is a Programming language that is very flexible and you can write whatever program you want on it. It is programmable, dynamic, and can be used to solve a complex problem.

[vero]

1. What does the EVM do?

Execute programs.

2. What is the format of the instructions that the EVM can read?

Byte code.

3. What is the relationship between the programming language Solidity and Bytecode?

You can write code in Solidity and use a compiler to get the Bytecode.

4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?

Because it uses script as a programming language which is a Not-Turing-Complete language.

4. What is a Turing Complete programming language?

A language that you can use to code basically anything you want / can think of.

[kristene]

1. What does the EVM do?
   EVM is an application that makes it possible to execute code on the Ethereum Network in such a way that we are all in consensus about what the results should be.

2. What is the format of the instructions that the EVM can read?
   The EVM can read the byte code.

3. What is the relationship between the programming language solidity and bytecode?
   An application such as solidity is a programming language that is used to program smart contracts. It along with a compiler will compile the instructions down to byte code. The EVM will read the byte code and then will give instruction to the CPU.

4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
   Bitcoin developers are worried of being spammed. They dont want loops. They do not want the extra size storage needed to add complex programs to the bitcoin network. It should just stay digital money. Bitcoin runs on a Script language and is not Turning Complete. It can not solve problems and is limited.

5. What is a Turning Complete programming language?
   Solidity is a Turning Complete programming language that is ran on the Ethereum network. It can program anything, have loops so it can tell a smart contract to do something several times.

[dhanakhande]

1. EVM executes smart contracts which are compiled to byte code line by line. In this process it consumes hardware,CPU etc… to run it and gives final state. EVM is present in each node with its own version.
2. EVM reads low level byte code instructions. Smart contracts can be programmed in high level language but it has to be compiled to get executed. Even smart contracts can be written in byte code but its not adopted as its not human understandable.
3. Solidity is in which smart contracts are written, and byte code is underlying language which EVM understands.
4. Bit coin script is not Turing complete, it can execute specific instructions but can’t run loops.
   Also such programs shouldn’t inject any malicious code to bitcoin network or keep executing instructions in loop.
5. A Turing complete programming language is which anything can be implemented. A language without loops is not a Turing complete.

[dhanakhande]

@filip have one doubt considering the example of sending money to kid if he passed in school.

How will smart contract on Etherum network get kid’s marks. Will it have access to any source can anyone please clear this confusion.

[PDF2028]

1. It executes smart contracts.

2. EVM can read bytecode.

3. Solidity is translated into bytecode so that the EVM can understand what the code is saying.

4. Bitcoin can’t run complex programs because the programing language that it uses is not turing complete.

5. A turing complete language is a programing language that could be used to program pretty much anything you can think of.

[Jill]

EVM reads the bytecode (instructions in the smart contract) and executes them. After this the EVM tells the CPU what to do. EVM are on all computers in the network and all have to agree and therefore reach consensus before the smart contract is executed.
The EVM reads bytecode instructions.
Solidity and Bytecode are both programming languages that use a compiler but they write codes differently. They can both be used by ethereum.
Bitcoin operates by using scripts, these are simple contracts with simple logic and are limited. Whereas ethereum operates on a true and complete language and can program anything. Ethereum has loops which means the software can do things over and over again and looping can also be adapted to a changed state in a smart contract.

[Madness666]

1. It makes consensus in the network possible. It works on top of the hardware, read and execute smart contracts.

2. EVM can read byte code.

3. With solidity you write the contracts and compile them then into byte code.

4. Because Bitcoin has only scrpits for smart contracts, and they are very limited and are not turing complete.

5. In a turing complete programming language, you may implement every possibly algorithm. With it almost every application can be developed.

[Lehigr2]

1. What does the EVM do? Allows you to execute code on the blockchain network so that all parties are in concensus.
2. What is the format of the instructions that the EVM can read? EVM bytecode from Solidity
3. What is the relationship between the programming language Solidity and Bytecode? Solidity is a programming language used for writing smart contract and bytecode is the result of what the EVM interprets from the smart contract.
4. Why can’t Bitcoin run the same type of complex programs like Ethereum can? It only has a very simple scripting language to enter commands. Solidity was created to solve this problem and add more complex customizable solutions.
5. What is a Turing Complete programming language? Solidity is an example of a Turing Complete programming language, meaning you can program anything.

[earlyster]

@filip

What does the EVM do?

Executes smart contracts in a secure container that ensures that the contract is playing by the rules when accessing the precious resources of the computer such as CPU and memory.

@filip

• What is the format of the instructions that the EVM can read?

bytecode

@filip

What is the relationship between the programming language Solidity and Bytecode?

Developers program in Solidity and then compile the code into byte code which is run in the Ethereum virtual machine

@filip

• Why can’t Bitcoin run the same type of complex programs like Ethereum can?

The Script language on bitcoin is not Turing complete meaning you cannot program concepts such as loops.

@filip

What is a Turing Complete programming language?

A programming language that provides features such as loops, conditionals, etc that can be used to solve any computational problem.

[Den_Wal]

1. What does the EVM do?
   Ethereum virtual machine reads and executes smart contracts, it is a piece of code all CPUs in the network are running on top of the hardware.
2. What is the format of the instructions that the EVM can read?
   EVM ByteCode.
3. What is the relationship between the programming language Solidity and Bytecode?
   ByteCode is produced by compiling a Soliditiy program into an executable format.
4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
   Bitcoin chain does not have a Virtual Machine (VM) to run code.
5. What is a Turing Complete programming language?
   Turing Complete programming languages allow the code to complete any possible algorithm you can think of

[AthenaBelisle]

1. EVM (Ethereum Virtual Machine) runs smart contract capabilities in the nodes within the ethereum network. EVM reads bytecode, which is previously compiled from solidity code, and will then tell it to the CPU.

2. EVM reads and interprets bytecode.

3. Solidity code is programming language that is complied into bytecode in order for the EVM to read and interpret contract instructions.

4. Bitcoin is limited by script (the bitcoin programming language). Script is not turning complete, while the Ethereum network is.

5. Turning complete programming language can program anything, along with unlimited loops.

[abarbir]

1. EVM executes all the code in the smart contract

2. EVM can read any scripting language

3. The bytecode is the list of instructions or code received from a programming language, like Solidity which will have it’s code run through it’s compiler and translated into bytecode that the EVM can read

4. Bitcoin’s primary purpose is to be a digital currency and not use executable code

5. Turing complete programming languages are those that can complete computational functions

[Robert12]

1. What does the EVM do?
Runs and execute smart contracts by telling each CPU what to do. EVM ensures also that smart contracts won’t brake loose and take control of CPU and do malicious things.

2. What is the format of the instructions that the EVM can read?
Byte code.

3. What is the relationship between the programming language Solidity and Bytecode?
Solidity creates via a compiler the byte code that the smart contract consists of.

4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
As Bitcoin is programmed via a script that is not turing complete.

4. What is a Turing Complete programming language?
A language that can solve all possible computational problems, means any application can be build with it.

[AdamP]

1. What does the EVM do? - The Ethereum Virtual Machine (EVM) is a powerful, sandboxed virtual stack embedded within each full Ethereum node, responsible for executing contract bytecode. Contracts are typically written in higher level languages, like Solidity, then compiled to EVM bytecode. Also it ensures that no malicious activity is going on.

2. What is the format of the instructions that the EVM can read? - Bytecode

3. What is the relationship between the programming language Solidity a compiler to compile the logic and instructions to Bytecode. Solidity is compiled into bytecode that is subsequently executed on the EVM

4. Why can’t Bitcoin run the same type of complex programs like Ethereum can? Because BTC uses the Script programming language which is not Turing complete.

5. What is a Turing Complete programming language? A programming language that can solve any problem.

[Marzio]

1. The Ethereum virtual machine reads smart contracts and passes the instructions to the CPU in order to execute them. It also work as a filter, to prevent malicious smart contracts to take control of the CPU resources
2. Bytecode
   3.Solidity is the programming language used by humans. A compiler then translate it into Bytecode readable by the EVM
3. Because the script language in Bitcoin is very basic, not Turing Complete
4. It is a very flexible programming language with which can be written very complex pieces o software which can solve any kind of tasks