Create EIP-3554 for delaying the difficulty bomb until Shanghai and/or Merge.

[MadeofTin]

Targeting 0.1 second effect on the first week of December 2021 with a delay of 9.5 million blocks.

[alita-moore]

Hi! I'm a bot, and I wanted to automerge your PR, but couldn't because of the following issue(s):

 - File with name EIPS/eip-3554.md is new and new files must be reviewed

[tjayrush]

Quick back of the envelope calc (edited to reflect expected fork block):

A. Expected fork block		12,830,000
B. Setback		9,500,000
C. New Fake Block (A - B)		3,330,000
D. New Fake Period (C // 100,000)		33
E. Expected Period Bomb First Becomes Noticeable*		42
F. Periods before Noticeable Bomb (E - D)		9
G. Blocks before Noticeable Bomb (F * 100,000)		900,000
H. Seconds in that many blocks (G * 14)		12,600,000
I. Days in that many seconds (H / 60 / 60 / 24)		~146
J. Months in that many days (I / 30)		~5 months

* - based on previous bombs.

Pretty much agrees exactly with James' calculation above.

[timbeiko]

@tjayrush am I reading it correctly in thinking that the bomb would only be noticeable 225 days after the fork block, i.e. late-Feb/early March 2022? If so, we likely want to shorten this period more so that we are closer to December.

[tjayrush]

@tjayrush am I reading it correctly in thinking that the bomb would only be noticeable 225 days after the fork block, i.e. late-Feb/early March 2022? If so, we likely want to shorten this period more so that we are closer to December.

I'm not sure you can be that precise, so I think James' calculation is probably good.

If the actual fork block is after 12,400,000 then it would be one more period closer to 42. I started with yesterday's block (12,388,007). Seven and a half months from now is around December.

Do you know the actual fork block? I can change the above if you do.

[timbeiko]

Sorry, that's my bad! Got confused because 12833000 is a possible fork block (see ethereum/pm#245 (comment)) and yours starts with 1238. Misread and though they were the same 😅

7.5 months from now sounds good 👍

[MadeofTin]

I created A magician thread. Would be great if we could move further conversation there. @tjayrush @timbeiko

One note on why the numbers are so different this time is because the difficulty is a lot higher than it was previously and so it would "hide" the effect of the bomb longer.