Exclude reward share transactions from the online accounts blocks

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

@@ -1309,6 +1309,9 @@ public class Block {
 					if (!transaction.isConfirmable()) {
 						return ValidationResult.TRANSACTION_NOT_CONFIRMABLE;
 					}
+					if (!transaction.isConfirmableAtHeight(this.blockData.getHeight())) {
+						return ValidationResult.TRANSACTION_NOT_CONFIRMABLE;
+					}
 				}
 
 				// Check transaction isn't already included in a block
@@ -2088,7 +2091,7 @@ public class Block {
 		return Block.isOnlineAccountsBlock(this.getBlockData().getHeight());
 	}
 
-	private static boolean isOnlineAccountsBlock(int height) {
+	public static boolean isOnlineAccountsBlock(int height) {
 		// After feature trigger, only certain blocks contain online accounts
 		if (height >= BlockChain.getInstance().getBlockRewardBatchStartHeight()) {
 			final int leadingBlockCount = BlockChain.getInstance().getBlockRewardBatchAccountsBlockCount();

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

@@ -75,7 +75,8 @@ public class BlockChain {
 		selfSponsorshipAlgoV1Height,
 		feeValidationFixTimestamp,
 		chatReferenceTimestamp,
-		arbitraryOptionalFeeTimestamp;
+		arbitraryOptionalFeeTimestamp,
+		unconfirmableRewardSharesHeight;
 	}
 
 	// Custom transaction fees
@@ -556,6 +557,10 @@ public class BlockChain {
 		return this.featureTriggers.get(FeatureTrigger.arbitraryOptionalFeeTimestamp.name()).longValue();
 	}
 
+	public int getUnconfirmableRewardSharesHeight() {
+		return this.featureTriggers.get(FeatureTrigger.unconfirmableRewardSharesHeight.name()).intValue();
+	}
+
 
 	// More complex getters for aspects that change by height or timestamp
 

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

@@ -474,6 +474,7 @@ public class BlockMinter extends Thread {
 
 		Iterator<TransactionData> unconfirmedTransactionsIterator = unconfirmedTransactions.iterator();
 		final long newBlockTimestamp = newBlock.getBlockData().getTimestamp();
+		final int newBlockHeight = newBlock.getBlockData().getHeight();
 		while (unconfirmedTransactionsIterator.hasNext()) {
 			TransactionData transactionData = unconfirmedTransactionsIterator.next();
 
@@ -481,6 +482,12 @@ public class BlockMinter extends Thread {
 			// Ignore transactions that have expired before this block - they will be cleaned up later
 			if (transactionData.getTimestamp() > newBlockTimestamp || Transaction.getDeadline(transactionData) <= newBlockTimestamp)
 				unconfirmedTransactionsIterator.remove();
+
+			// Ignore transactions that are unconfirmable at this block height
+			Transaction transaction = Transaction.fromData(repository, transactionData);
+			if (!transaction.isConfirmableAtHeight(newBlockHeight)) {
+				unconfirmedTransactionsIterator.remove();
+			}
 		}
 
 		// Sign to create block's signature, needed by Block.isValid()

src/main/java/org/qortal/transaction/RewardShareTransaction.java

@@ -3,6 +3,7 @@ package org.qortal.transaction;
 import org.qortal.account.Account;
 import org.qortal.account.PublicKeyAccount;
 import org.qortal.asset.Asset;
+import org.qortal.block.Block;
 import org.qortal.block.BlockChain;
 import org.qortal.crypto.Crypto;
 import org.qortal.data.account.RewardShareData;
@@ -180,6 +181,17 @@ public class RewardShareTransaction extends Transaction {
 		// Nothing to do
 	}
 
+	@Override
+	public boolean isConfirmableAtHeight(int height) {
+		if (height >= BlockChain.getInstance().getUnconfirmableRewardSharesHeight()) {
+			// Not confirmable in online accounts or distribution blocks
+			if (Block.isOnlineAccountsBlock(height) || Block.isBatchRewardDistributionBlock(height)) {
+				return false;
+			}
+		}
+		return true;
+	}
+
 	@Override
 	public void process() throws DataException {
 		PublicKeyAccount mintingAccount = getMintingAccount();

src/main/java/org/qortal/transaction/Transaction.java

@@ -904,6 +904,15 @@ public abstract class Transaction {
 		return true;
 	}
 
+	/**
+	 * Returns whether transaction is confirmable in a block at a given height.
+	 * @return
+	 */
+	public boolean isConfirmableAtHeight(int height) {
+		/* To be optionally overridden */
+		return true;
+	}
+
 	/**
 	 * Returns whether transaction can be added to the blockchain.
 	 * <p>

src/main/resources/blockchain.json

@@ -95,7 +95,8 @@
 		"selfSponsorshipAlgoV1Height": 1092400,
 		"feeValidationFixTimestamp": 1671918000000,
 		"chatReferenceTimestamp": 1674316800000,
-		"arbitraryOptionalFeeTimestamp": 1680278400000
+		"arbitraryOptionalFeeTimestamp": 1680278400000,
+		"unconfirmableRewardSharesHeight": 99999500
 	},
 	"checkpoints": [
 		{ "height": 1136300, "signature": "3BbwawEF2uN8Ni5ofpJXkukoU8ctAPxYoFB7whq9pKfBnjfZcpfEJT4R95NvBDoTP8WDyWvsUvbfHbcr9qSZuYpSKZjUQTvdFf6eqznHGEwhZApWfvXu6zjGCxYCp65F4jsVYYJjkzbjmkCg5WAwN5voudngA23kMK6PpTNygapCzXt" }

src/test/java/org/qortal/test/minting/BatchRewardTests.java

@@ -20,6 +20,7 @@ import org.qortal.settings.Settings;
 import org.qortal.test.common.*;
 import org.qortal.test.common.transaction.TestTransaction;
 import org.qortal.transaction.DeployAtTransaction;
+import org.qortal.transaction.Transaction;
 import org.qortal.transform.TransformationException;
 import org.qortal.transform.block.BlockTransformer;
 import org.qortal.utils.NTP;
@@ -679,4 +680,120 @@ public class BatchRewardTests extends Common {
 		}
 	}
 
+	@Test
+	public void testUnconfirmableRewardShares() throws DataException, IllegalAccessException {
+		// test-settings-v2-reward-scaling.json has unconfirmable reward share feature trigger enabled from block 500
+		Common.useSettings("test-settings-v2-reward-scaling.json");
+
+		// Set reward batching to every 1000 blocks, starting at block 0, looking back the last 25 blocks for online accounts
+		FieldUtils.writeField(BlockChain.getInstance(), "blockRewardBatchStartHeight", 0, true);
+		FieldUtils.writeField(BlockChain.getInstance(), "blockRewardBatchSize", 1000, true);
+		FieldUtils.writeField(BlockChain.getInstance(), "blockRewardBatchAccountsBlockCount", 25, true);
+
+		try (final Repository repository = RepositoryManager.getRepository()) {
+
+			PrivateKeyAccount bob = Common.getTestAccount(repository, "bob");
+			PrivateKeyAccount chloe = Common.getTestAccount(repository, "chloe");
+			PrivateKeyAccount dilbert = Common.getTestAccount(repository, "dilbert");
+
+			PrivateKeyAccount aliceSelfShare = Common.getTestAccount(repository, "alice-reward-share");
+			PrivateKeyAccount bobSelfShare = Common.getTestAccount(repository, "bob-reward-share");
+			PrivateKeyAccount chloeSelfShare = Common.getTestAccount(repository, "chloe-reward-share");
+
+			// Create self shares for bob, chloe and dilbert
+			AccountUtils.generateSelfShares(repository, List.of(bob, chloe, dilbert));
+
+			// Mint blocks 1-974 - these should have no online accounts or rewards
+			for (int i=1; i<974; i++) {
+				Block block = BlockUtils.mintBlockWithReorgs(repository, 2);
+				assertTrue(block.isBatchRewardDistributionActive());
+				assertFalse(block.isRewardDistributionBlock());
+				assertFalse(block.isBatchRewardDistributionBlock());
+				assertFalse(block.isOnlineAccountsBlock());
+				assertEquals(0, block.getBlockData().getOnlineAccountsCount());
+			}
+
+			// Mint blocks 975-998 - these should have online accounts but no rewards
+			for (int i=975; i<=998; i++) {
+				List<PrivateKeyAccount> onlineAccounts = Arrays.asList(aliceSelfShare, bobSelfShare, chloeSelfShare);
+				Block block = BlockMinter.mintTestingBlock(repository, onlineAccounts.toArray(new PrivateKeyAccount[0]));
+				assertTrue(block.isBatchRewardDistributionActive());
+				assertFalse(block.isRewardDistributionBlock());
+				assertFalse(block.isBatchRewardDistributionBlock());
+				assertTrue(block.isOnlineAccountsBlock());
+				assertEquals(3, block.getBlockData().getOnlineAccountsCount());
+			}
+
+			// Cancel Chloe's reward share
+			TransactionData transactionData = AccountUtils.createRewardShare(repository, chloe, chloe, -100, 10000000L);
+			TransactionUtils.signAndImportValid(repository, transactionData, chloe);
+
+			// Mint block 999 - Chloe's account should still be included as the reward share cancellation is delayed
+			List<PrivateKeyAccount> onlineAccounts = Arrays.asList(aliceSelfShare, bobSelfShare, chloeSelfShare);
+			Block block = BlockMinter.mintTestingBlock(repository, onlineAccounts.toArray(new PrivateKeyAccount[0]));
+			assertTrue(block.isBatchRewardDistributionActive());
+			assertFalse(block.isRewardDistributionBlock());
+			assertFalse(block.isBatchRewardDistributionBlock());
+			assertTrue(block.isOnlineAccountsBlock());
+			assertEquals(3, block.getBlockData().getOnlineAccountsCount());
+
+			// Mint block 1000
+			Block block1000 = BlockUtils.mintBlockWithReorgs(repository, 12);
+
+			// Online accounts should be included from block 999
+			assertEquals(3, block1000.getBlockData().getOnlineAccountsCount());
+
+			assertEquals(repository.getBlockRepository().getBlockchainHeight(), 1000);
+
+			// It's a distribution block (which is technically also an online accounts block)
+			assertTrue(block1000.isBatchRewardDistributionBlock());
+			assertTrue(block1000.isRewardDistributionBlock());
+			assertTrue(block1000.isBatchRewardDistributionActive());
+			assertTrue(block1000.isOnlineAccountsBlock());
+		}
+	}
+
+	@Test
+	public void testUnconfirmableRewardShareBlocks() throws DataException, IllegalAccessException {
+		// test-settings-v2-reward-scaling.json has unconfirmable reward share feature trigger enabled from block 500
+		Common.useSettings("test-settings-v2-reward-scaling.json");
+
+		// Set reward batching to every 1000 blocks, starting at block 0, looking back the last 25 blocks for online accounts
+		FieldUtils.writeField(BlockChain.getInstance(), "blockRewardBatchStartHeight", 0, true);
+		FieldUtils.writeField(BlockChain.getInstance(), "blockRewardBatchSize", 1000, true);
+		FieldUtils.writeField(BlockChain.getInstance(), "blockRewardBatchAccountsBlockCount", 25, true);
+
+		try (final Repository repository = RepositoryManager.getRepository()) {
+
+			PrivateKeyAccount bob = Common.getTestAccount(repository, "bob");
+			PrivateKeyAccount chloe = Common.getTestAccount(repository, "chloe");
+			PrivateKeyAccount dilbert = Common.getTestAccount(repository, "dilbert");
+
+			// Create self shares for bob, chloe and dilbert
+			AccountUtils.generateSelfShares(repository, List.of(bob, chloe, dilbert));
+
+			// Create transaction to cancel chloe's reward share
+			TransactionData rewardShareTransactionData = AccountUtils.createRewardShare(repository, chloe, chloe, -100, 10000000L);
+			Transaction rewardShareTransaction = Transaction.fromData(repository, rewardShareTransactionData);
+
+			// Mint a block
+			BlockUtils.mintBlock(repository);
+
+			// Check block heights up to 974 - transaction should be confirmable
+			for (int height=2; height<974; height++) {
+				assertEquals(true, rewardShareTransaction.isConfirmableAtHeight(height));
+			}
+
+			// Check block heights 975-1000 - transaction should not be confirmable
+			for (int height=975; height<1000; height++) {
+				assertEquals(false, rewardShareTransaction.isConfirmableAtHeight(height));
+			}
+
+			// Check block heights 1001-1974 - transaction should be confirmable again
+			for (int height=1001; height<1974; height++) {
+				assertEquals(true, rewardShareTransaction.isConfirmableAtHeight(height));
+			}
+		}
+	}
+
 }

src/test/resources/test-chain-v2-block-timestamps.json

@@ -83,7 +83,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-disable-reference.json

@@ -86,7 +86,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-founder-rewards.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-leftover-reward.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-minting.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 9999999999999
+		"arbitraryOptionalFeeTimestamp": 9999999999999,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-qora-holder-extremes.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-qora-holder-reduction.json

@@ -88,7 +88,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-qora-holder.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-reward-levels.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-reward-scaling.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 500
 	},
 	"genesisInfo": {
 		"version": 4,
@@ -107,7 +108,10 @@
 			{ "type": "ACCOUNT_FLAGS", "target": "QgV4s3xnzLhVBEJxcYui4u4q11yhUHsd9v", "andMask": -1, "orMask": 1, "xorMask": 0 },
 			{ "type": "REWARD_SHARE", "minterPublicKey": "2tiMr5LTpaWCgbRvkPK8TFd7k63DyHJMMFFsz9uBf1ZP", "recipient": "QgV4s3xnzLhVBEJxcYui4u4q11yhUHsd9v", "rewardSharePublicKey": "7PpfnvLSG7y4HPh8hE7KoqAjLCkv7Ui6xw4mKAkbZtox", "sharePercent": 100 },
 
-			{ "type": "ACCOUNT_LEVEL", "target": "Qci5m9k4rcwe4ruKrZZQKka4FzUUMut3er", "level": 8 }
+			{ "type": "ACCOUNT_LEVEL", "target": "Qci5m9k4rcwe4ruKrZZQKka4FzUUMut3er", "level": 8 },
+			{ "type": "ACCOUNT_LEVEL", "target": "QgV4s3xnzLhVBEJxcYui4u4q11yhUHsd9v", "level": 1 },
+			{ "type": "ACCOUNT_LEVEL", "target": "QixPbJUwsaHsVEofJdozU9zgVqkK6aYhrK", "level": 1 },
+			{ "type": "ACCOUNT_LEVEL", "target": "QaUpHNhT3Ygx6avRiKobuLdusppR5biXjL", "level": 1 }
 		]
 	}
 }

src/test/resources/test-chain-v2-reward-shares.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2-self-sponsorship-algo.json

@@ -87,7 +87,8 @@
 		"selfSponsorshipAlgoV1Height": 20,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,

src/test/resources/test-chain-v2.json

@@ -88,7 +88,8 @@
 		"selfSponsorshipAlgoV1Height": 999999999,
 		"feeValidationFixTimestamp": 0,
 		"chatReferenceTimestamp": 0,
-		"arbitraryOptionalFeeTimestamp": 0
+		"arbitraryOptionalFeeTimestamp": 0,
+		"unconfirmableRewardSharesHeight": 99999999
 	},
 	"genesisInfo": {
 		"version": 4,