What is Transaction?

A transaction is a cryptographically signed instruction that records a state change on a blockchain a token transfer, contract execution, NFT mint, or governance vote. It is the only mechanism by which anything changes on-chain.

How does Transaction work?

You specify the destination, amount, and any contract data.
Your wallet signs it with your private key.
The signed transaction broadcasts to the network and enters the mempool.
Validators include it in a block, confirming it permanently.

Why does Transaction matter?

Transactions are the mechanism of change. Without them, blockchains are static no transfers, no contracts executing, no new state.

Key features of Transaction

Cryptographically signed proves authorization
Immutable once confirmed in a block
Fee-bearing miners and validators are compensated
Transparent every transaction is publicly auditable

Examples of Transaction

Sending 1 ETH to a friend, swapping tokens on Uniswap, minting an NFT, and voting on a DAO proposal are all transactions each one a permanent, signed record on the blockchain.