diff --git a/src/main/resources/blockchain.json b/src/main/resources/blockchain.json
index d0ac9ffb..acba90da 100644
--- a/src/main/resources/blockchain.json
+++ b/src/main/resources/blockchain.json
@@ -11,8 +11,8 @@
 	"minAccountLevelToRewardShare": 5,
 	"maxRewardSharesPerMintingAccount": 6,
 	"founderEffectiveMintingLevel": 10,
-	"onlineAccountSignaturesMinLifetime": 2592000000,
-	"onlineAccountSignaturesMaxLifetime": 3196800000,
+	"onlineAccountSignaturesMinLifetime": 43200000,
+	"onlineAccountSignaturesMaxLifetime": 86400000,
 	"rewardsByHeight": [
 		{ "height": 1, "reward": 5.00 },
 		{ "height": 259201, "reward": 4.75 },