Fixed a mapping issue in Block->getShareBins(), to take effect at some future (undecided) height.

Post trigger, account levels will map correctly to share bins, subtracting 1 to account for the 0th element of the shareBinsByLevel array.
Pre-trigger, the legacy mapping will remain in effect.

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

@@ -176,19 +176,26 @@ public class Block {
 		 * 
 		 *  @return account-level share "bin" from blockchain config, or null if founder / none found
 		 */
-		public AccountLevelShareBin getShareBin() {
+		public AccountLevelShareBin getShareBin(int blockHeight) {
 			if (this.isMinterFounder)
 				return null;
 
 			final int accountLevel = this.mintingAccountData.getLevel();
 			if (accountLevel <= 0)
-					return null;
+				return null; // level 0 isn't included in any share bins
 
-			final AccountLevelShareBin[] shareBinsByLevel = BlockChain.getInstance().getShareBinsByAccountLevel();
+			final BlockChain blockChain = BlockChain.getInstance();
+			final AccountLevelShareBin[] shareBinsByLevel = blockChain.getShareBinsByAccountLevel();
 			if (accountLevel > shareBinsByLevel.length)
 				return null;
 
-			return shareBinsByLevel[accountLevel];
+			if (blockHeight < blockChain.getShareBinFixHeight())
+				// Off-by-one bug still in effect
+				return shareBinsByLevel[accountLevel];
+
+			// level 1 stored at index 0, level 2 stored at index 1, etc.
+			return shareBinsByLevel[accountLevel-1];
+
 		}
 
 		public long distribute(long accountAmount, Map<String, Long> balanceChanges) {
@@ -1783,7 +1790,7 @@ public class Block {
 			// Find all accounts in share bin. getShareBin() returns null for minter accounts that are also founders, so they are effectively filtered out.
 			AccountLevelShareBin accountLevelShareBin = accountLevelShareBins.get(binIndex);
 			// Object reference compare is OK as all references are read-only from blockchain config.
-			List<ExpandedAccount> binnedAccounts = expandedAccounts.stream().filter(accountInfo -> accountInfo.getShareBin() == accountLevelShareBin).collect(Collectors.toList());
+			List<ExpandedAccount> binnedAccounts = expandedAccounts.stream().filter(accountInfo -> accountInfo.getShareBin(this.blockData.getHeight()) == accountLevelShareBin).collect(Collectors.toList());
 
 			// No online accounts in this bin? Skip to next one
 			if (binnedAccounts.isEmpty())

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

@@ -71,7 +71,8 @@ public class BlockChain {
 
 	public enum FeatureTrigger {
 		atFindNextTransactionFix,
-		newBlockSigHeight;
+		newBlockSigHeight,
+		shareBinFix;
 	}
 
 	/** Map of which blockchain features are enabled when (height/timestamp) */
@@ -381,6 +382,10 @@ public class BlockChain {
 		return this.featureTriggers.get(FeatureTrigger.newBlockSigHeight.name()).intValue();
 	}
 
+	public int getShareBinFixHeight() {
+		return this.featureTriggers.get(FeatureTrigger.shareBinFix.name()).intValue();
+	}
+
 	// More complex getters for aspects that change by height or timestamp
 
 	public long getRewardAtHeight(int ourHeight) {

src/main/resources/blockchain.json

@@ -49,7 +49,8 @@
 	},
 	"featureTriggers": {
 		"atFindNextTransactionFix": 275000,
-		"newBlockSigHeight": 320000
+		"newBlockSigHeight": 320000,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,

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

@@ -46,7 +46,8 @@
 		"newAssetPricingTimestamp": 0,
 		"groupApprovalTimestamp": 0,
 		"atFindNextTransactionFix": 0,
-		"newBlockSigHeight": 999999
+		"newBlockSigHeight": 999999,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,

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

@@ -46,7 +46,8 @@
 		"newAssetPricingTimestamp": 0,
 		"groupApprovalTimestamp": 0,
 		"atFindNextTransactionFix": 0,
-		"newBlockSigHeight": 999999
+		"newBlockSigHeight": 999999,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,

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

@@ -46,7 +46,8 @@
 		"newAssetPricingTimestamp": 0,
 		"groupApprovalTimestamp": 0,
 		"atFindNextTransactionFix": 0,
-		"newBlockSigHeight": 999999
+		"newBlockSigHeight": 999999,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,

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

@@ -46,7 +46,8 @@
 		"newAssetPricingTimestamp": 0,
 		"groupApprovalTimestamp": 0,
 		"atFindNextTransactionFix": 0,
-		"newBlockSigHeight": 999999
+		"newBlockSigHeight": 999999,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,

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

@@ -46,7 +46,8 @@
 		"newAssetPricingTimestamp": 0,
 		"groupApprovalTimestamp": 0,
 		"atFindNextTransactionFix": 0,
-		"newBlockSigHeight": 999999
+		"newBlockSigHeight": 999999,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,

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

@@ -46,7 +46,8 @@
 		"newAssetPricingTimestamp": 0,
 		"groupApprovalTimestamp": 0,
 		"atFindNextTransactionFix": 0,
-		"newBlockSigHeight": 999999
+		"newBlockSigHeight": 999999,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,

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

@@ -46,7 +46,8 @@
 		"newAssetPricingTimestamp": 0,
 		"groupApprovalTimestamp": 0,
 		"atFindNextTransactionFix": 0,
-		"newBlockSigHeight": 999999
+		"newBlockSigHeight": 999999,
+		"shareBinFix": 999999
 	},
 	"genesisInfo": {
 		"version": 4,