mirrors/bitcoin-bips
1
0
Fork 0
mirror of https://github.com/bitcoin/bips.git synced 2024-11-19 01:40:05 +01:00
Code Issues Projects Releases Wiki Activity

Change BIP 94 timewarp delta to 7200 seconds

Browse Source
This commit is contained in:
Fabian Jahr 2024-08-05 23:05:30 +02:00
parent 5e87c919a7
commit 0c2a2172f7
No known key found for this signature in database
GPG Key ID: F13D1E9D890798CD
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
bip-0094.mediawiki
View File

@ -62,7 +62,7 @@ The first block must contain the actual difficulty of the network and can theref
In addition to a time warp attack potentially exacerbating the perpetual block storm attack, a time warp attack provides an alternative way to increase the block production rate even if the unintended reset of the actual difficulty due to the 20-minute exception was mitigated.
To protect against the time warp attack, the following rule proposed as part of The Great Consensus Cleanup<ref>https://github.com/TheBlueMatt/bips/blob/cleanup-softfork/bip-XXXX.mediawiki</ref> is enforced: "The nTime field of each block whose height, mod 2016, is 0 must be greater than or equal to the nTime field of the immediately prior block minus 600. For the avoidance of doubt, such blocks must still comply with existing Median-Time-Past nTime restrictions."
To protect against the time warp attack, the following rule proposed as part of The Great Consensus Cleanup<ref>https://github.com/TheBlueMatt/bips/blob/cleanup-softfork/bip-XXXX.mediawiki</ref> is enforced: "The nTime field of each block whose height, mod 2016, is 0 must be greater than or equal to the nTime field of the immediately prior block minus 7200. For the avoidance of doubt, such blocks must still comply with existing Median-Time-Past nTime restrictions." The originally proposed rule has been adapted to allow for a delta of 7200 seconds instead of only 600 seconds to allow honest miners to mine at the current time even if an attacking miner has postdated the timestamp up to the allowed 2 hours in the previous block.
== Rationale ==