It's the process in which a Validator picks any Transaction in order to verify and execute the transaction. Based on the result the transaction can be considered as "successful" or "ejected"

University of Michigan - Ann Arbor

For completing a transaction in **Ethereum** involves a process of several stages ever since the moment a transaction is initiated until it is ultimately added to the blockchain. Currently the main following stages  involved in a transaction are: 
1. Transaction creation.
2. Transaction propagation.
3. Transaction selection.
4. Transaction confirmation.


Transaction Lifecycle in Ethereum

Involves the process of defining the **recipient adress**, the amount or token, set the **gas price** and **gas limit** then sign the Transaction with the **Private key** and finally send it to the network

Ethereum Transaction Creation

It refers the process to broadcast a transaction through the Network, them will be added to the list of pending transactions of the node (mempool).

Ethereum Transaction Propagation

Ethereum Transaction Selection

The Block that contains the transaction will be upgraded as "justified" or "finalized" once it happens the transaction will persist forever in the Network.

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