About Ethereum Transaction Reverts and Status:0

The Ethereum transaction system is designed to handle errors that occur during the execution of smart contracts. Two critical concepts in this context are transaction revert and status: 0. In this article, we will dive deeper into what these terms mean, the differences, and when you might encounter one or both.

Transaction Revert

A transaction revert occurs when an error occurs during the execution of a smart contract. This can happen for a variety of reasons, such as:

• Out of Gas (OOG) errors

• Out of Gas (GE)

• Invalid Gas Prices

• Non-Fatal Reversals (NFR)

When a reversal occurs, Ethereum’s gasless system automatically aborts the transaction and returns an error message to the contract. The transaction revert state is then reflected in the blockchain as status: 0.

Status:0

Status:0 refers to the block number where the reverted transaction occurred. It is essentially a timestamp for that specific block.

Here is a simple example of how it works:

pragma solidity ^0.8.0;
contract RevertExample {
function doSomething() public {
// Do something
}
function revertSomething() public {
// If we want to manually trigger a revert, we can use the following code:
revert doSomething();
}
}

In this example, if an error occurs during doSomething, Ethereum will automatically abort the transaction and return an error message. The status: 0 field will then be set to represent the block number where the reverted transaction occurred.

Key Differences

• Error Type: Reverts are errors that occur during contract execution, while status:0 indicates a block number.

• Revert Handling: When an error occurs, Ethereum’s gasless system aborts the transaction and returns an error message. In contrast, status: 0 does not indicate an error, but rather represents the timestamp for the reverted transaction.

Best Practices

When writing smart contracts on the Ethereum platform, it is essential to handle reverts correctly:

• Use abi.revert() instead of revertSomething().

• Handle reverts within contract functions or in a separate contract store.

• Be aware of gas exhaustion and invalid gas prices that can lead to OOG errors.

By understanding the difference between transaction revert and state:0, you will be better equipped to handle errors and optimize your smart contracts for efficient deployment on Ethereum.

Ethereum Balance Address