I always wonder what happens if Bitcoin changes its mechanism from PoW to DPoS like us on Hive. Vast amount of energy will be saved for sure. Will the security be compromised? But Hive is very secure, isn't it?
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It won't ever switch to DPOS or POS. The POW protocol on bitcoin is much more secure than the DPOS protocol used by HIVE. Partly because bitcoin is so large and it is so expensive to attack. We have already seen the vulnerabilities of DPOS with STEEM/HIVE. All you need is a controlling stake or 17 colluding witnesses... both of which are significantly easier to get than it is to attack bitcoin.
Yes, you're right. That's the weakness of Steem/Hive. They should add the number of consensus witnesses to avoid the same attack in the future.
Yep, but will THEY???