As the backbone of many cryptocurrencies, including Bitcoin, block rewards help maintain the security and integrity of the blockchain network.
A block reward is a crucial component that supports the decentralized nature of cryptocurrencies and has great symbolic and functional importance.
Fundamentally, a block reward is the payment made to crypto miners for adding authorized transactions to the network. This process, known as mining, involves completing challenging mathematical puzzles, adding computing power to the network and preserving the distributed ledger’s integrity.
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Source: https://cointelegraph.com/explained/what-is-a-block-reward-explained