A crypto transaction is an on-chain action such as sending assets, swapping tokens, approving a contract, or interacting with a smart contract.
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Short definition
Transaction is a crypto transaction is an on-chain action such as sending assets, swapping tokens, approving a contract, or interacting with a smart contract.
Simple explanation
A transaction is submitted to a blockchain network and, once confirmed, becomes part of the public on-chain record.
Why it matters
Transactions are usually difficult to reverse, so users should verify addresses, networks, amounts, and wallet prompts before confirming.
Example context
Sending ETH, approving a token, claiming an airdrop, or swapping through a DEX all involve blockchain transactions.