Intermediate
Blockchain & Web3
Q41 / 100
What problem does the "double-spending" issue solve for in cryptocurrencies, and how does blockchain address it?
Correct! Well done.
Incorrect.
The correct answer is A) It prevents the same digital funds from being spent more than once, by having the network reach consensus on a single, ordered transaction history
A
Correct Answer
It prevents the same digital funds from being spent more than once, by having the network reach consensus on a single, ordered transaction history
Explanation
Without a central authority, digital tokens could theoretically be copied and spent multiple times; consensus mechanisms ensure all nodes agree on one canonical, ordered ledger preventing this.
Progress
41/100