How does a hash help secure blockchain technology?
O Hashes do not allow any new blocks to be formed on a chain or new data to be added. Hashes block all changes.
O Hashes are like fingerprints that make each block of data unique. Blocks form a chain that can only have new blocks added.
O Hashtags allow others to see if someone is trying to change something and it alerts the government to prevent the changes.
O Blocks of data require passwords that are called hashes. Hashes are impossible to guess.
The correct answer is: Hashes are like fingerprints that make each block of data unique. Blocks form a chain that can only have new blocks added.
Explanation: In blockchain technology, a hash is a fixed-size string of characters generated from input data, which creates a unique identifier for each block. This uniqueness is crucial because it allows any change in the block’s data to produce a different hash, helping to maintain the integrity of the blockchain. If someone tries to alter the data, the hash changes, indicating tampering. Hence, hashes secure the blockchain by linking blocks in a way that ensures any change is easily detectable, preserving the trust and immutability of the data.