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Cryptocurrency staking is the process of holding coins/tokens (stake) in order to hold rights to participate in the validation of transaction blocks, and in doing so Validators are recompensed with rewards.

Staking rewards are recompensation in the form of tokens (ex DOT in Polkadot) that validators receive for validating transactions and ensuring the accuracy of POS blockchains. Validators will distribute these rewards to their delegators after taking a small commission to pay for their services.

Validators in blockchain play a very important role in confirming transactions and creating blocks in a distributed network. They perform the task of verifying and confirming transactions, ensuring their legitimacy and security.

When working with blockchain, each transaction made by a participant is sent to the network and transmitted from node to node until it reaches validators. Validators check the authenticity and correctness of the transaction to ensure that the participant has enough funds and permissions to conduct the transaction. If the transaction passes the verification successfully, it is included in the next block, which is then added to the blockchain.

Validators also perform the task of creating new blocks in the blockchain. After verifying the transaction and ensuring its authenticity, validators can create a new block by adding the verified transaction and other data to it. After this, the block is sent across the network for confirmation by other nodes and inclusion in the shared chain of blocks. Thus, validators are an important element of the blockchain system, providing transaction verification and block creation, which ensures the security, reliability, and integrity of the distributed network.