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Verify imported blockchains from peer nodes #2

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cosme12 opened this issue Jan 14, 2018 · 1 comment
Open

Verify imported blockchains from peer nodes #2

cosme12 opened this issue Jan 14, 2018 · 1 comment
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@cosme12
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cosme12 commented Jan 14, 2018

Loaded node_peers blockchains should be validated. find_new_chains() should verify the new imported blockchain follows the requirements. This prevent attacks that attempt to completely change the blockchain history.
@cosme12 cosme12 added enhancement New feature or request feature request and removed enhancement New feature or request labels Jan 14, 2018
@jrmtoubRHL
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If i understand correctly, In order to verify the hashes , we need to do the POW done by the miner again?
In bitcoin , when nodes verify transactions , they have to do the same costly POW as the miner?
Thank you

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@cosme12 @jrmtoubRHL