Removed name check and decreased difficulty for online signature

src/main/java/org/qortal/account/Account.java

@@ -219,6 +219,7 @@ public class Account {
 		int level = accountData.getLevel();
 		int groupIdToMint = BlockChain.getInstance().getMintingGroupId();
 		int groupCheckHeight = BlockChain.getInstance().getGroupMemberCheckHeight();
+		int removeNameCheckHeight = BlockChain.getInstance().getRemoveOnlyMintWithNameHeight();
 
 		String myAddress = accountData.getAddress();
 		List<NameData> myName = nameRepository.getNamesByOwner(myAddress);
@@ -236,7 +237,11 @@ public class Account {
 			return true;
 
 		// Can only mint if have registered a name and is member of minter group id
-		if (blockchainHeight >= groupCheckHeight && level >= levelToMint && !myName.isEmpty() && isMember)
+		if (blockchainHeight >= groupCheckHeight && blockchainHeight < removeNameCheckHeight && level >= levelToMint && !myName.isEmpty() && isMember)
+			return true;
+
+		// Can only mint if is member of minter group id
+		if (blockchainHeight >= removeNameCheckHeight && level >= levelToMint && isMember)
 			return true;
 
 		// Founders needs to pass same tests like minters
@@ -253,12 +258,19 @@ public class Account {
 			return true;
 
 		if (blockchainHeight >= groupCheckHeight &&
+				blockchainHeight < removeNameCheckHeight &&
 				Account.isFounder(accountData.getFlags()) &&
 				accountData.getBlocksMintedPenalty() == 0 &&
 				!myName.isEmpty() &&
 				isMember)
 			return true;
 
+		if (blockchainHeight >= removeNameCheckHeight &&
+				Account.isFounder(accountData.getFlags()) &&
+				accountData.getBlocksMintedPenalty() == 0 &&
+				isMember)
+			return true;
+
 		return false;
 	}
 

src/main/java/org/qortal/block/BlockChain.java

@@ -71,6 +71,7 @@ public class BlockChain {
 		transactionV6Timestamp,
 		disableReferenceTimestamp,
 		increaseOnlineAccountsDifficultyTimestamp,
+		decreaseOnlineAccountsDifficultyTimestamp,
 		onlineAccountMinterLevelValidationHeight,
 		selfSponsorshipAlgoV1Height,
 		selfSponsorshipAlgoV2Height,
@@ -85,6 +86,7 @@ public class BlockChain {
 		disableRewardshareHeight,
 		enableRewardshareHeight,
 		onlyMintWithNameHeight,
+		removeOnlyMintWithNameHeight,
 		groupMemberCheckHeight
 	}
 
@@ -217,6 +219,10 @@ public class BlockChain {
 	 * featureTriggers because unit tests need to set this value via Reflection. */
 	private long onlineAccountsModulusV2Timestamp;
 
+	/** Feature trigger timestamp for ONLINE_ACCOUNTS_MODULUS time interval decrease. Can't use
+	 * featureTriggers because unit tests need to set this value via Reflection. */
+	private long onlineAccountsModulusV3Timestamp;
+
 	/** Snapshot timestamp for self sponsorship algo V1 */
 	private long selfSponsorshipAlgoV1SnapshotTimestamp;
 
@@ -403,6 +409,10 @@ public class BlockChain {
 		return this.onlineAccountsModulusV2Timestamp;
 	}
 
+	public long getOnlineAccountsModulusV3Timestamp() {
+		return this.onlineAccountsModulusV3Timestamp;
+	}
+
 	/* Block reward batching */
 	public long getBlockRewardBatchStartHeight() {
 		return this.blockRewardBatchStartHeight;
@@ -579,6 +589,10 @@ public class BlockChain {
 		return this.featureTriggers.get(FeatureTrigger.increaseOnlineAccountsDifficultyTimestamp.name()).longValue();
 	}
 
+	public long getDecreaseOnlineAccountsDifficultyTimestamp() {
+		return this.featureTriggers.get(FeatureTrigger.decreaseOnlineAccountsDifficultyTimestamp.name()).longValue();
+	}
+
 	public int getSelfSponsorshipAlgoV1Height() {
 		return this.featureTriggers.get(FeatureTrigger.selfSponsorshipAlgoV1Height.name()).intValue();
 	}
@@ -635,6 +649,10 @@ public class BlockChain {
 		return this.featureTriggers.get(FeatureTrigger.onlyMintWithNameHeight.name()).intValue();
 	}
 
+	public int getRemoveOnlyMintWithNameHeight() {
+		return this.featureTriggers.get(FeatureTrigger.removeOnlyMintWithNameHeight.name()).intValue();
+	}
+
 	public int getGroupMemberCheckHeight() {
 		return this.featureTriggers.get(FeatureTrigger.groupMemberCheckHeight.name()).intValue();
 	}

src/main/java/org/qortal/controller/OnlineAccountsManager.java

@@ -44,6 +44,7 @@ public class OnlineAccountsManager {
      */
     private static final long ONLINE_TIMESTAMP_MODULUS_V1 = 5 * 60 * 1000L;
     private static final long ONLINE_TIMESTAMP_MODULUS_V2 = 30 * 60 * 1000L;
+    private static final long ONLINE_TIMESTAMP_MODULUS_V3 = 10 * 60 * 1000L;
 
     /**
      * How many 'current' timestamp-sets of online accounts we cache.
@@ -67,12 +68,13 @@ public class OnlineAccountsManager {
     private static final long ONLINE_ACCOUNTS_COMPUTE_INITIAL_SLEEP_INTERVAL = 30 * 1000L; // ms
 
     // MemoryPoW - mainnet
-    public static final int POW_BUFFER_SIZE = 1 * 1024 * 1024; // bytes
+    public static final int POW_BUFFER_SIZE = 1024 * 1024; // bytes
     public static final int POW_DIFFICULTY_V1 = 18; // leading zero bits
     public static final int POW_DIFFICULTY_V2 = 19; // leading zero bits
+    public static final int POW_DIFFICULTY_V3 = 6; // leading zero bits
 
     // MemoryPoW - testnet
-    public static final int POW_BUFFER_SIZE_TESTNET = 1 * 1024 * 1024; // bytes
+    public static final int POW_BUFFER_SIZE_TESTNET = 1024 * 1024; // bytes
     public static final int POW_DIFFICULTY_TESTNET = 5; // leading zero bits
 
     // IMPORTANT: if we ever need to dynamically modify the buffer size using a feature trigger, the
@@ -106,11 +108,15 @@ public class OnlineAccountsManager {
 
     public static long getOnlineTimestampModulus() {
         Long now = NTP.getTime();
-        if (now != null && now >= BlockChain.getInstance().getOnlineAccountsModulusV2Timestamp()) {
+        if (now != null && now >= BlockChain.getInstance().getOnlineAccountsModulusV2Timestamp() && now < BlockChain.getInstance().getOnlineAccountsModulusV3Timestamp()) {
             return ONLINE_TIMESTAMP_MODULUS_V2;
         }
+        if (now != null && now >= BlockChain.getInstance().getOnlineAccountsModulusV3Timestamp()) {
+            return ONLINE_TIMESTAMP_MODULUS_V3;
+        }
         return ONLINE_TIMESTAMP_MODULUS_V1;
     }
+
     public static Long getCurrentOnlineAccountTimestamp() {
         Long now = NTP.getTime();
         if (now == null)
@@ -135,9 +141,12 @@ public class OnlineAccountsManager {
         if (Settings.getInstance().isTestNet())
             return POW_DIFFICULTY_TESTNET;
 
-        if (timestamp >= BlockChain.getInstance().getIncreaseOnlineAccountsDifficultyTimestamp())
+        if (timestamp >= BlockChain.getInstance().getIncreaseOnlineAccountsDifficultyTimestamp() && timestamp < BlockChain.getInstance().getDecreaseOnlineAccountsDifficultyTimestamp())
             return POW_DIFFICULTY_V2;
 
+        if (timestamp >= BlockChain.getInstance().getDecreaseOnlineAccountsDifficultyTimestamp())
+            return POW_DIFFICULTY_V3;
+
         return POW_DIFFICULTY_V1;
     }
 

src/main/resources/blockchain.json

@@ -29,6 +29,7 @@
 	"onlineAccountSignaturesMinLifetime": 43200000,
 	"onlineAccountSignaturesMaxLifetime": 86400000,
 	"onlineAccountsModulusV2Timestamp": 1659801600000,
+	"onlineAccountsModulusV3Timestamp": 9999999999999,
 	"selfSponsorshipAlgoV1SnapshotTimestamp": 1670230000000,
 	"selfSponsorshipAlgoV2SnapshotTimestamp": 1708360200000,
 	"selfSponsorshipAlgoV3SnapshotTimestamp": 1708432200000,
@@ -95,6 +96,7 @@
 		"transactionV6Timestamp": 9999999999999,
 		"disableReferenceTimestamp": 1655222400000,
 		"increaseOnlineAccountsDifficultyTimestamp": 9999999999999,
+		"decreaseOnlineAccountsDifficultyTimestamp": 9999999999999,
 		"onlineAccountMinterLevelValidationHeight": 1092000,
 		"selfSponsorshipAlgoV1Height": 1092400,
 		"selfSponsorshipAlgoV2Height": 1611200,
@@ -109,6 +111,7 @@
 		"disableRewardshareHeight": 1899100,
 		"enableRewardshareHeight": 1905100,
 		"onlyMintWithNameHeight": 1900300,
+		"removeOnlyMintWithNameHeight": 9999999,
 		"groupMemberCheckHeight": 1902700
 	},
 	"checkpoints": [