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Roles of Validators in Blockchain

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    Coinhunt CC

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    4 min read

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The role of validators in the blockchain is to run a full node and participate in the consensus. A full node is a mechanism that validates transactions and blocks of the blockchain. An authenticator is used to confirm a transaction sent to the blockchain by a blockchain client or a user. These can be data sent for inclusion in a block within the blockchain and then planned to be stored on the blockchain. We can simply count the sending of cryptocurrency from one wallet to another wallet from this data.

How Validators Work

The role of a validator can vary depending on the consensus algorithm each blockchain uses. In general, blockchains can have a limited or unlimited number of nodes and records. Each of the nodes can save data to the blockchain. But before doing so, they need to get approval from other nodes and validators. Validators are representatives of nodes. Analyzing the data from the nodes, the validators confirm that the correct data is added to the registry.

Blockchains reward users who act as validators. Thus, the system encourages its participants to continue the expansion process of the ledger. The name of the logic used to run the validator on the blockchain is the transaction processor. These processors are encoded in the appropriate blockchain class. Processors are called when it is necessary to check whether the process parameters are complete. When all parameters are accepted, the validators forward this transaction to a node to add it to the blockchain. Validators will be penalized by the chain if they intentionally or unintentionally misreport.

Nodes are physical computer systems that use their computational power to verify these operations. Logic is used to determine whether a transaction should be confirmed, then the intensive processing power required to update the Blockchain Merkle Tree is provided by the nodes.

Nodes and miners cause confusion. Miners are users who run nodes decentralized. Miners receive rewards in the form of fractions of the block reward for their efforts to use their computational power.

Each blockchain has offered various requirements for those who want to be validators.

Using the Nominated Proof-of-Stake (NPoS) algorithm, Polkadot requires you to run a node that supports the network 24x7, 365 days a year, to be a validator. For this, you must have a computer with certain features, a cloud server running Linux, and at least 80 GB of storage.

A minimum of 32 ETH must be staked to become a validator on Ethereum. A mainnet client or backend API must then be run. Validators should collect transactions in the new block and check the work of other validators.

In order to be a validator in Solana, which uses the Delegated-Proof-of-Stake (DPoS) mechanism, you must have a strong server with certain features such as Polkadot. Apart from that, you have to stake a large amount of SOL and pay the voting fees every day.

To become a validator on Avalanche, you must stake at least 2000 AVAX. Apart from that, it is sufficient to have a computer with at least 2GHz CPU, 4GB of RAM and 10GB of free disk space. In Avalanche, validators do not need to be constantly online as in Polkadot. If your computer is offline for a certain period of time, you will not be able to receive the reward until you are only online. You receive rewards between 6% and 13% APR for staking AVAX on Avalanche.


Validators and transaction processors help determine whether the submitted transaction meets all criteria for inclusion in the blockchain. If the transaction meets the criteria, nodes are used to broadcast the transaction on the blockchain and update the global status for everyone. Nodes are created decentralized by miners.

When you meet all the conditions and become a validator, you have active and passive income avenues with blockchain technology. Verification protocols are developing day by day and gaining new forms. From the first day of the Bitcoin blockchain to today's smart contract platforms and consensus mechanisms, it has come a long way. Mining, nodes, validators and transaction processors in blockchains will continue to play a key role in the technology of the future.

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