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2 votes
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What does difficulty mean in PoA and PoS chains?

In PoW, the meaning of "difficulty" is quite straightforward and, for instance, fully described in yellow paper. (https://ethereum.github.io/yellowpaper/paper.pdf) But what does the "...
Valerii's user avatar
  • 21
0 votes
2 answers
677 views

How can I calculate a given Ethereum block's difficulty?

I understand that mining a block involves trying to generate a hash that is less than or equal to a target dictated by a required difficulty. Ethereum Wiki on Ethash: def mine(full_size, dataset, ...
Shane's user avatar
  • 131
1 vote
1 answer
57 views

Is it possible to use low mining complexity to remove some certain transaction in the past?

I have a question that has concerned me for a long time. It relates to the security and reliability of the blockchain applications. Let's assume I want to build an application that uses Ethereum or ...
Dobby007's user avatar
  • 113
0 votes
1 answer
284 views

Custom difficulty consensus in a private network.

Suppose in a private network setup , one node runs a standard geth client, and then we add another node to the network using a modified geth, where only the difficulty has been made static. Can this ...
Shourie Ganguly's user avatar
1 vote
1 answer
1k views

What happens if the block time changes to 5 seconds?

Related to this and this. The difficulty adjustment algorithm is: block_diff = parent_diff + parent_diff // 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99) + int(...
galahad's user avatar
  • 3,930