A public key is a piece of cryptographic data that is used to receive funds and identify a wallet on a blockchain. It is generated from a private key and can be safely shared with others.
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A public key allows others to send you cryptocurrency without exposing your private key.
In blockchain systems, the public key is part of a key pair together with the private key. While the private key is kept secret and used to sign transactions, the public key is shared openly and used to verify those transactions. Wallet addresses are often derived from public keys, making them easier to use in everyday transactions. Although the public key is visible to everyone, it cannot be used to access or control funds, which ensures security as long as the private key remains protected.
Short example:
Suppose you want to receive cryptocurrency from someone.
You share your public key or wallet address with them.
They use this information to send funds to your wallet, while only you can access them using your private key.
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