How secure is blockchain? Have they even be hacked?
What is the lightning network?
What are blockchain durability and robustness?
Is the blockchain totally different from banking ledger?
What is a 51% attack?
What is a virtual machine?
Why we need different consensus mechanisms?
Why blockchain is a trusted model of the transaction?
What is the merkle root?
How a blockchain ledger is different from an ordinary one?
So what is hashing?
What is block identifiers?
Can you make a case for what square measure off-chain transactions?
What challenges information leak can impose on an organization?
How are merkle trees used in blockchains?