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9 votes

What can blockchain do that normal databases systems won't?

This is hard to answer, as "blockchain" isn't a very well defined thing. Often the term refers to some use of cryptography in a distributed system, but what it means beyond that depends on who you ask …
Pieter Wuille's user avatar
2 votes

Why are blocks in a permissioned blockchain linked together?

I think you're mistaking PoW for a mechanism that guarantees the chain's correctness, rather than just a means for finding consensus. A blockchain (without PoW) is just an ordered list of batched upd …
Pieter Wuille's user avatar