How Does a Successful Collision Attack Impact the Reliability of a Merkle Root?

A successful collision attack would allow an attacker to find two different sets of transactions that result in the same Merkle Root. This means an attacker could replace a legitimate transaction with a fraudulent one, or vice-versa, without altering the final Merkle Root in the block header.

If the root remains the same, light clients relying on the Merkle Proof would incorrectly verify the fraudulent block as valid, severely compromising data integrity.

What Are the Economic Consequences of a Successful Collision Attack on a Major Cryptocurrency?
What Is the Relationship between Collision Resistance and the Concept of “Finality” in Blockchain Transactions?
What Is ‘Collision Resistance’ in the Context of a Cryptographic Hash Function?
How Does a Merkle Root Verify a Transaction without Exposing the Entire Block?
What Is a ‘Collision Resistance’ Property in Hashing and Why Is It Vital for Bitcoin?
What Is a ‘Light Client’ and How Does It Utilize the Merkle Root?
How Is the Concept of a “Hash Collision” a Theoretical Security Risk for Merkle Trees?
Can a Successful Collision Attack on a Derivative Contract Lead to Financial Fraud?

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