Dig into Ethereum (Smart contracts)… keeping it simple for people who are scared / confused of Blockchain

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Blockchain and Ethereum is an complex domain for everyone.

Ethereum is a Protocol on which you can code and run Apps. Ethereum works as a Google App Store or Marketplace.

In Ethereum : You write Apps using Solidity language(built-in) and run those Apps as Contracts.

Contracts are Business Logic.

Hi All, I am trying to explain the process of Coding, Deploying and Testing Smart contracts in Ethereum platform.

Steps :

1. First a Developer, will code a new Smart contract (source code)
2. Contract is written in Solidity language
3. Use Solidity IDE to write code
4. Deploy the new Contract to Ethereum blockchain
5. For Deploying new Contract, create a new Transaction (Txn) in Ethereum
6. Create a new Transaction, which will create a new Smart Contract in Ethereum. You have to pay Gas cost for running your Transaction.
7. Once Created, New Contract attributes: (Contract: Address, Creator: Address, Txn: Address, Block ID, Ether balance, etc)
8. Once Contract is created, You can run the Contract.
9. You can test Smart contract using Etherscan & Metamask browser plugin
10. Contract contains all Transactions : For every creation & running Contracts
11. Etherscan site: shows all Contracts and Transactions (within Contract)
12. You can publish & Share Contract source code in https://etherscan.io/

Dev Tools for coding and testing Contracts: Use Metamask plugin in Chrome, Remix Solidity IDE, Etherscan site to view Contracts created and executed Contracts.

In detail:

• Contract = [Txn1, Txn2, Txn3……]
• Contract runs on Ethereum platform
• Contract SDLC : (Code -> Build -> Deploy -> Run)
• Transactions are broadcasted to all Ethereum Nodes and after verification, these Transactions will be stored on Block.
• Anyone can run Contract on Ethereum blockchain
• each Txn has an unique address
• each Contract has an unique address

Ethereum: has 2 Account types

• User accounts (private keys) {User Private Key == Ethereum address}
• Contracts (Account controlled by code).

*Digital Assets in Ethereum are under direct Control of Contracts. Contracts have some Set of Rules attached to them.

*Ethereum stores information : Current State and Historical transactions

• All Nodes in Ethereum store current State.
• Some Nodes store History.