How does Bitcoin Core overcome the condition that chain work in pre-sync must be within one day of the current active chain tip when it is genesis?

Asked Jan 09 '24 at 19:39

Active Jan 09 '24 at 19:57

Viewed 41 times

Two conditions for the chain we got in the header pre-sync are:

to have minimal chain work
to be within 1 day worth of work from the active chain tip's work

When we start Bitcoin core node for the first time, the active chain tip is on genesis block. The chain we get in pre-sync has an extremely large amount of cumulative work. So, it will pass the first condition, but how will it pass the second condition? It will be much more than within 1 day worth of genesis block work.

edited Jan 09 '24 at 19:57

asked Jan 09 '24 at 19:39

Cosmos

1

It has to have at least as much work as within a day's worth of the active chain tip's work. More work is always better. – Pieter Wuille Jan 09 '24 at 20:20
@PieterWuille My bad than – Cosmos Jan 09 '24 at 20:31

How does Bitcoin Core overcome the condition that chain work in pre-sync must be within one day of the current active chain tip when it is genesis?

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