Honestly, I didn’t understand for a long time what a validator is in simple terms until I started learning about blockchain. It turns out, it’s not as complicated as it seems at first glance.

Validators are basically the people who keep an eye on the network. They verify that all transactions are honest, create new blocks, and earn rewards for doing so. Without them, the blockchain simply couldn’t function properly.

What exactly does a validator do? First, they check whether a transaction is valid, whether it has a cryptographic signature, and if it complies with the network’s rules. Second, they take verified transactions, combine them, and create a new block. Third, they participate in consensus — meaning they coordinate with other validators to agree on what the correct state of the network is. And most importantly, they ensure security by protecting against fraud and double spending.

Many people confuse validators with miners, but they’re not exactly the same. Miners work in Proof-of-Work networks, while validators operate in Proof-of-Stake networks. The mechanics differ, but the essence is the same: both verify transactions and create blocks.

Want to become a validator yourself? Here’s how it works. First, choose a blockchain — for example, Ethereum, Solana, or Polkadot, which use staking systems. Then, buy the required amount of cryptocurrency of that network. This will be your stake, your collateral. Next, install special software, set up a node on your computer or server. Choose a platform to work on — a wallet or an exchange where it’s convenient. Lock up your crypto as a stake, join the network, and start verifying transactions. The main thing is to follow the rules, or you might be penalized or kicked out of the network.

If you don’t want to become a validator yourself, you can simply delegate your crypto to someone else. In that case, it’s important to choose a reliable person. What should you look for? First, whether they participate in network development and propose updates. Second, the size of their stake — the larger, the more serious they are about the network. Third, how often they go offline — high stability is needed. Fourth, their reputation in the community. And finally, what security measures they use.

In general, a validator is simply someone who keeps the blockchain safe and operational. It requires resources, knowledge, and responsibility. But once you understand it, the system is quite logical. Each network has its own requirements, so before you start, be sure to read the specific network’s documentation. And remember: work with trusted platforms to avoid losing money.