Do not read data from header chain #1769

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1. kseo commented on Sep 20, 2019

   

   kseo

   on Sep 20, 2019

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   @majecty what was the original purpose of the header chain?
2. majecty commented on Sep 20, 2019

   

   majecty

   on Sep 20, 2019

   Last edited by kseo

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   Verifying the chain before receiving the whole the chain. Since the best blockchain could be different from the best header chain, we should read the data only from the blockchain.
3. junha1 commented on Jan 16, 2020

   

   junha1

   on Jan 16, 2020

   Last edited by junha1

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   Verifying header chain itself (aka header sync) can be reused in may places. For example the light client. So it would be better if we make separate module out of this after some fix.