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Truffle is a very well-known Blockchain environment, testing framework, and an asset Blockchain pipeline that uses the Ethereum Virtual Machine (EVM). Truffle is designed and developed for the freelance Solidity developers for deploying and testing their smart contracts written on Solidity. Popular Truffle commands include - truffle init, truffle compile, truffle test, and truffle migrate. Truffle framework provides in-built compilation of smart contracts, linking, deployment, and binary management. 

Ethereum is a powerful platform for developing and deploying Blockchain applications. It is a decentralized public ledger that records and verifies the transactions. Solidity is a robust object-oriented programming language designed for writing smart contracts on Ethereum. Solidity provides the error-free implementation of the smart contracts of Ethereum due to its object-oriented, flexibility, and counterintuitive ways of problem solving.

Ethereum Virtual Machine (EVM) is a virtual machine that provides a higher level of abstraction between the Ethereum programs and executing machine. EVM increases the efficiency of Ethereum platform and improves software portability. EVM ensures that applications are separated from their host and from each other. For executing tasks, EVM uses a set of instructions. There are total 140 opcodes which makes EVM to be Turing complete, i.e., EVM is able to complete each and every task if the resources are enough. 

Ethereum wallets are the applications which let Blockchain users interact with their Ethereum account. Wallets provide users the facility to manage their accounts on Ethereum platform. Ethereum wallets are controlled through a password or a private key that allows users to transfer funds within the wallet. Anyone who has their private keys or passwords can access their funds.

An Ethereum address is a string of letters and numbers beginning with " 0x". The balance of each and every Ethereum address can be seen on the Blockchain network but who is controlling the address is not known as the address is represented through a public string of letters and numbers,

Blockchain is decentralized, distributed, and public ledger that contains multiple transactions which are accessible across a network and every time when a new transaction takes place in the chain, the record is added to every peer's ledger.

• Distributed Digitalized Ledger - Each participant of Blockchain can access the complete database along with the changes made to it. It is not allowed for a single participant to regulate the information. Every participant can automatically predict the outcome of an event without the need for any intermediary. The Blockchain database is decentralized, i.e., distributed among multiple participants hence known as Distributed Ledger Technology (DLT).

• Computational Logic - Transactions in Blockchain are programmed with computational logic. Hence, participants can set up the algorithms that will automatically invoke the transactions between the nodes.

• Immutability of Records - Once the transaction is inserted in the database and the accounts are updated in a record, that record cannot be changed because each record is connected to the previously come records. Several data structures and algorithms are used to ensure the immutability of records, chronological ordering, and availability to all other networking nodes.

• Node-to-Node Transmission - In Blockchain, the transmission of information takes place straight-forwardly between peers instead of a centralized node. Each user/node stores the information and forwards it to all other participants in the network.
• Transparency along with Pseudonymity - A transaction and its information are visible and accessible to anyone within the blockchain system. The transaction takes place between blockchain addresses and each node has a unique 30 plus alpha-numeric characters address associated with it. Participants can choose to be anonymous or provide their identity to other participants in the network.

Proof-of-Work (PoW) algorithm confirms the transaction and creates a new block in the Blockchain network. In the PoW algorithm, miners compete with each other to complete their transactions on the network. This is called Mining. The first miner who solves the blocks problems earns a reward. 

In Proof-of-Stake (PoS) algorithm, a set of nodes stake their cryptocurrencies for the transaction validation. The creator of a new block is selected in a deterministic manner depending on its wealth. PoS doesn’t give any block reward, hence miners take the transaction fees only. Proof-of-Stake can be more cost-effective as compared to Proof-of-Work.

If you are trying to hire a Solidity Developer. Here is the Solidity Developer Job Description that you can use in your hiring.