chores: wording

BEPs/BEP-524.md

@@ -64,13 +64,16 @@ Refer BEP-520
 After phase two, the block interval will be reduced to 0.75 seconds, a single validator will produce 32 consecutive blocks per turn, keeping the total block production time at 24 seconds (0.75 × 32). However, the shorter block time significantly reduces the collaboration window for searchers, builders, and validators, impacting the current process and requiring adjustments.
 
 ### 6.2 Layer 2 Solutions
-TBD
+Similar to BEP-520, Layer 2 can only attach 2 blobs at most for each transaction and the blob gas price calculation mechanism will also be slightly different.
 
 ### 6.3 Quarterly Auto-Burn
 TBD
 
 ### 6.4 Block Finality
-TBD
+This BEP will not change the fast finality mechanism, but short block interval could bring some challenges to fast finality, as votes need to be propagated in a shorter time. When fast finality works properly, with this BEP, the average transaction finality time would be reduced from 3.75 seconds to 1.875 seconds.
+But if fast finality failed, with TurnLength 32 and ValidatorSize 21, for natural block finality, it will be:
+- (with >1/2 validator confirmations):  352(11*32) blocks, that is 264 seconds
+- (with >2/3 validator confirmations):  480(15*32) blocks, that is 360 seconds
 
 ## 7. License
 The content is licensed under [CC0](https://creativecommons.org/publicdomain/zero/1.0/).