There are a lot of consensus mechanisms used in different Blockchain. Let us discuss what it is and how it works in blockchain with some features of it. Proof of Work is a core idea in blockchain systems. It is often called PoW in short. It was first used in the Bitcoin blockchain network. It helps to secure the network. Actually this is the system of tools to confirm the transection.

This is the first method introduced through the bitcoin network. This is the pioneer in this model. Later a number of systems came into existence in different blockchains. In this system, miners solve hard math problems. These problems need strong computing power. The process takes time and energy. When a miner solves the problem, a new block is added. This block contains recent transactions. This is how PoW works. The miner gets a reward. This reward is often a coin. It gives an incentive to work. The system is open to anyone. Anyone can join as a miner. This makes the network more decentralized. There is no central authority. This is a key feature of blockchain.

The difficulty of the problem changes over time. It adjusts based on the network power. If more miners join, the difficulty goes up. If miners leave, the difficulty goes down. This keeps block time stable. PoW also helps prevent double spending which is the main problem in automated transactions like blockchain networks. It makes it very hard to cheat. A bad actor would need huge power. This cost makes attacks unlikely. The network stays secure because of this.

I shall write another 3 posts on the topic and there I shall try to cover some more points on this pioneer technology and mechanism.

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