update mainnet activation heights

.changeset/increased_v2_allow_height_to_52400.md

@@ -0,0 +1,7 @@
+---
+default: major
+---
+
+# Increased V2 Allow Height to 52600
+
+Delays activation of the v2 hardfork to June 6th, 2025 in response to concerns about the scope of updates necessary for partners to support v2. Also shortens the period between phase 1 and phase 2 of the hardfork to around 14 days. This shortened period should not adversely affect implementors since they can start sending V2 transactions and using V2 contracts immediately after phase 1 activates.

chain/network.go

@@ -47,8 +47,8 @@ func Mainnet() (*consensus.Network, types.Block) {
 	n.HardforkFoundation.PrimaryAddress = parseAddr("053b2def3cbdd078c19d62ce2b4f0b1a3c5e0ffbeeff01280efb1f8969b2f5bb4fdc680f0807")
 	n.HardforkFoundation.FailsafeAddress = parseAddr("27c22a6c6e6645802a3b8fa0e5374657438ef12716d2205d3e866272de1b644dbabd53d6d560")
 
-	n.HardforkV2.AllowHeight = 513400   // March 10th, 2025 @ 6:00pm UTC
-	n.HardforkV2.RequireHeight = 526000 // June 6th, 2025 @ 6:00am UTC
+	n.HardforkV2.AllowHeight = 526000   // June 6th, 2025 @ 6:00am UTC
+	n.HardforkV2.RequireHeight = 530000 // July 4th, 2025 @ 2:00am UTC
 
 	b := types.Block{
 		Timestamp: n.HardforkOak.GenesisTimestamp,
@@ -142,7 +142,7 @@ func TestnetZen() (*consensus.Network, types.Block) {
 	n.HardforkFoundation.FailsafeAddress = types.VoidAddress
 
 	n.HardforkV2.AllowHeight = 112000   // March 1, 2025 @ 7:00:00 UTC
-	n.HardforkV2.RequireHeight = 116380 // 1 month later
+	n.HardforkV2.RequireHeight = 114000 // ~ 2 weeks later
 
 	b := types.Block{
 		Timestamp: n.HardforkOak.GenesisTimestamp,