Does a Failed Transaction Still Occupy Block Space?

Yes, a failed (reverted) transaction still occupies block space. The transaction itself, along with the proof of its execution and failure, is included in a block to ensure that the failure is recorded on the immutable ledger.

This consumption of block space is why the transaction fee is still paid.

Why Is a Time-Stamped Oracle Data Feed Important for Options Expiration?
How Does a ‘Dead Coin’ Differ from a Failed Project with Strong Vesting?
What Happens to the Nonce Once a Block Is Successfully Mined?
Have There Been Any Historical Examples of Financial Instruments Similar to Stablecoins That Have Failed?
How Is the Existence of a Lien on a Digital Asset Typically Recorded?
Can a Transaction Be Partially Executed and Still Consume Gas?
What Are Some Historical Examples of Successful and Failed Algorithmic Stablecoins?
How Does a Transaction’s Inclusion in a Merkle Tree Provide Cryptographic Proof of Its Existence?

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