{"question":"What is a validator node?","answer":"A validator node verifies transactions and secures the blockchain.","category":"consensus","difficulty":"beginner"}
{"question":"What is staking?","answer":"Staking is locking tokens to help secure the network and earn rewards.","category":"economics","difficulty":"beginner"}
{"question":"What is a DAO?","answer":"A DAO is a decentralized organization governed by smart contracts.","category":"governance","difficulty":"intermediate"}
{"question":"What is gas fee?","answer":"Gas fee is the cost required to execute blockchain transactions.","category":"transactions","difficulty":"beginner"}
{"question":"What is Layer 2?","answer":"Layer 2 is a scaling solution built on top of a base blockchain.","category":"scaling","difficulty":"intermediate"}
