A Zero Confirmation Transaction is a transaction on a blockchain that has been sent but hasnt been confirmed yet.
When you send crypto, like SOL on Solana, your transaction doesnt instantly become final. Instead, it first enters a "pending" state where its visible to the network but not yet locked in. This is whats called a zero confirmation transaction.
Think of it like ordering something online. Youve placed your order, but its still being processed. The order is there, but its not yet shipped out or delivered.
In the blockchain world, until your transaction is confirmed by being added to a block, it remains in this pending state. Once its confirmed, it becomes part of the blockchain, and the transaction is permanent and cant be undone.
How does it work?
When you send a transaction on Solana, it gets sent to the network where it waits to be confirmed by validators. Until they add it to a block, it stays in the zero confirmation state.
This step is crucial because it ensures that transactions are valid and helps prevent issues like double spending.