A mining pool in a Proof-of-Work blockchain finds a new block but intentionally withholds it from the rest of the network. The pool then continues to mine on its own private chain, hoping to find another block before the public chain grows. What is the primary goal of this attack strategy?
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A
To cause a network-wide denial of service by halting block production.
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B
To increase the attacker's revenue relative to their hash power by orphaning blocks from honest miners.
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C
To execute a double-spend attack by creating a longer chain in secret.
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D
To introduce a hard fork by releasing a chain with different protocol rules.