An article introducing the history of the "difficulty bomb" and the Ethereum Arrow Glacier upgrade

星球君的朋友们

Odaily资深作者

2021-11-08 17:14 (UTC+8)

This article is about 1570 words, reading the full article takes about 3 minutes

What will happen with the Arrow Glacier upgrade?

AI Summary

Expand

What will happen with the Arrow Glacier upgrade?

Arrow Glacier is the third network upgrade to the proof-of-work Ethereum network, scheduled for 2021. Earlier this year, the Ethereum mainnet successfully deployed the Berlin upgrade in April and the London upgrade in August, deploying 4 EIPs and 5 EIPs respectively.

first level title

What will happen with the Arrow Glacier upgrade?

secondary title

EIP-4345: Difficulty bomb delayed until June 2022

The EIP proposal pushes back London’s total bomb defuses by 10.7 million blocks, an increase of 1 million from the previous pushback to London. This nuclear bomb may appear in June 2022.

On October 5th, Tim Beiko initially proposed the EIP proposal, proposing to push the bomb to 10.5 million blocks until May 2022. However, in subsequent further discussions with AllCoreDevs, it was decided to move the bomb to next summer.

first level title

The History of the "Difficulty Bomb"

secondary title

Why was the difficulty bomb added in the first place?

secondary title

Timeline and related EIPs

November 2015: EIP-2: Homestead Hard-fork Changes Modifications were made to the pre-homestead difficulty adjustment algorithm.

April 2016: EIP-100: Changed the difficulty adjustment to target average block time, including uncle blocks, and updated the difficulty adjustment algorithm to target a constant average block generation rate, including uncle blocks, thus ensuring a high Predictable issuance rate, which cannot be adjusted upwards by manipulating the uncle block rate.

June 2016: EIP-649: Metropolis Difficulty Bomb Delay and Block Reward Reduction, delays the difficulty bomb by about a year and a half, and uses the Byzantium fork, the first part of the Metropolis fork, to reduce the block reward.

July 2018: EIP-1234: Constantinople Difficulty Bomb Delay and Block Reward Adjustment delayed the difficulty bomb by about 12 months and passed the Constantinople fork (second part of the Metropolis fork) Reduced block rewards.

November 2019: EIP-2384: Muir Glacier Difficulty Bomb Delay, delaying the difficulty bomb to the next 4,000,000 blocks (~611 days).

May 2021: EIP-3554: Difficulty Bomb Delayed to December 2021 This EIP was deployed in August with the London upgrade to delay the difficulty bomb so that it will show effect in the first week of December 2021.

secondary title