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Re:Vitalik Buterin Has Left VC Firm Fenbushi Capital by nullc on Tuesday January 16, 2018 @01:32AM (#16156250)
> with no loss of safety.

That simply isn't true. Accepting a blockchain blindly without validating is the Bitcoin SPV model. In ethereum it amounts to an undiversified risk that the two mining pools needed to constitute a majority hashpower (ethermine and f2pool) will not violate the protocol, or-- if you are accepting state with few confirmations as final-- that _any_ miner will not violate the protocol.

Re:Vitalik Buterin Has Left VC Firm Fenbushi Capital by sova on Tuesday January 16, 2018 @01:52AM (#16156312)
Headers are fingerprints / unique hashes. If someone else has already derived account balances to a particular point, it may be enough to avoid duplicating the chain.