Reject truncated DATUM PPLNS coinbases

.env.example

@@ -113,11 +113,11 @@ PAYOUT_BOOTSTRAP_WINDOW=true
 # solo preserves current one-address coinbase payouts. Set to snapshot to pay
 # the latest payout snapshot directly in coinbase outputs.
 PAYOUT_COINBASE_MODE=solo
-PAYOUT_MAX_COINBASE_OUTPUTS=10
+PAYOUT_MAX_COINBASE_OUTPUTS=200
 PAYOUT_MIN_OUTPUT_SATS=546
 PAYOUT_FEE_ADDRESS=
 PAYOUT_FEE_PERCENT=0
-PAYOUT_COINBASE_WEIGHT_BUDGET=50000
+PAYOUT_COINBASE_WEIGHT_BUDGET=26000
 
 #redis
 REDIS_URL=redis://redis:6379

docker-compose.external-db.yml

@@ -108,11 +108,11 @@ services:
       PAYOUT_METHOD: ${PAYOUT_METHOD:-pplns}
       PAYOUT_WINDOW_FACTOR: ${PAYOUT_WINDOW_FACTOR:-4}
       PAYOUT_BOOTSTRAP_WINDOW: ${PAYOUT_BOOTSTRAP_WINDOW:-true}
-      PAYOUT_MAX_COINBASE_OUTPUTS: ${PAYOUT_MAX_COINBASE_OUTPUTS:-10}
+      PAYOUT_MAX_COINBASE_OUTPUTS: ${PAYOUT_MAX_COINBASE_OUTPUTS:-200}
       PAYOUT_MIN_OUTPUT_SATS: ${PAYOUT_MIN_OUTPUT_SATS:-546}
       PAYOUT_FEE_ADDRESS: ${PAYOUT_FEE_ADDRESS:-}
       PAYOUT_FEE_PERCENT: ${PAYOUT_FEE_PERCENT:-0}
-      PAYOUT_COINBASE_WEIGHT_BUDGET: ${PAYOUT_COINBASE_WEIGHT_BUDGET:-50000}
+      PAYOUT_COINBASE_WEIGHT_BUDGET: ${PAYOUT_COINBASE_WEIGHT_BUDGET:-26000}
     healthcheck:
       test: ["CMD-SHELL", "node -e \"const http=require('http'); const https=require('https'); const secure=process.env.API_SECURE==='true'; const client=secure?https:http; const req=client.get({hostname:'127.0.0.1',port:process.env.API_PORT||3334,path:'/api/network',rejectUnauthorized:false},res=>process.exit(res.statusCode<500?0:1)); req.on('error',()=>process.exit(1)); req.setTimeout(5000,()=>{req.destroy(); process.exit(1);});\""]
       interval: 30s

full-setup/docker-compose-mainnet.yml

@@ -122,11 +122,11 @@ services:
       PAYOUT_WINDOW_FACTOR: ${PAYOUT_WINDOW_FACTOR:-4}
       PAYOUT_BOOTSTRAP_WINDOW: ${PAYOUT_BOOTSTRAP_WINDOW:-true}
       PAYOUT_COINBASE_MODE: ${PAYOUT_COINBASE_MODE:-solo}
-      PAYOUT_MAX_COINBASE_OUTPUTS: ${PAYOUT_MAX_COINBASE_OUTPUTS:-10}
+      PAYOUT_MAX_COINBASE_OUTPUTS: ${PAYOUT_MAX_COINBASE_OUTPUTS:-200}
       PAYOUT_MIN_OUTPUT_SATS: ${PAYOUT_MIN_OUTPUT_SATS:-546}
       PAYOUT_FEE_ADDRESS: ${PAYOUT_FEE_ADDRESS:-}
       PAYOUT_FEE_PERCENT: ${PAYOUT_FEE_PERCENT:-0}
-      PAYOUT_COINBASE_WEIGHT_BUDGET: ${PAYOUT_COINBASE_WEIGHT_BUDGET:-50000}
+      PAYOUT_COINBASE_WEIGHT_BUDGET: ${PAYOUT_COINBASE_WEIGHT_BUDGET:-26000}
 
 networks:
   bitcoin:

src/ORM/payout-snapshot/payout-snapshot.service.ts

@@ -51,11 +51,11 @@ export interface ExpectedPayout {
     percent: number;
 }
 
-const DEFAULT_MAX_COINBASE_OUTPUTS = 10;
+const DEFAULT_MAX_COINBASE_OUTPUTS = 200;
 const DEFAULT_MIN_OUTPUT_SATS = 546;
 const DEFAULT_PAYOUT_METHOD = 'pplns';
 const DEFAULT_PAYOUT_WINDOW_FACTOR = 4;
-const DEFAULT_COINBASE_WEIGHT_BUDGET = 50_000;
+const DEFAULT_COINBASE_WEIGHT_BUDGET = 26_000;
 const DEFAULT_PAYOUT_BOOTSTRAP_WINDOW = true;
 const PPLNS_PAYOUT_MODE: PayoutMode = 'pplns';
 

src/services/datum.service.spec.ts

@@ -329,6 +329,49 @@ describe('DatumService job validation', () => {
         expect(validation.error).toBe('output-count-mismatch');
     });
 
+    it('rejects DATUM PPLNS coinbases that only fit a smaller profile and add a pool remainder', () => {
+        const configService = {
+            get: jest.fn((key: string) => {
+                if (key === 'NETWORK') {
+                    return 'testnet';
+                }
+                if (key === 'DATUM_POOL_PAYOUT_ADDRESS') {
+                    return 'tb1qdyjakeepue4trak9d3hvyelrd0aw7mwju2d0c2';
+                }
+                return undefined;
+            }),
+        };
+        const service = createService({ configService }) as any;
+        const extranonce = Buffer.alloc(12, 1);
+        const expectedOutputs = [
+            { address: 'tb1q42vtlphyjjcun9wcv9f0d9pkhup9dcf5z9k4gh', amountSats: 421 },
+            { address: 'tb1q9r8gvnx3j4d6jvl0fqjrmy3dar4k4l3052af7q', amountSats: 133 },
+            { address: 'tb1qdyjakeepue4trak9d3hvyelrd0aw7mwju2d0c2', amountSats: 42 },
+        ];
+        const coinbase = createDatumCoinbaseSplit([
+            { address: 'tb1q42vtlphyjjcun9wcv9f0d9pkhup9dcf5z9k4gh', amountSats: 421 },
+            { address: 'tb1qdyjakeepue4trak9d3hvyelrd0aw7mwju2d0c2', amountSats: 175 },
+        ], extranonce);
+        const latestTemplate = {
+            blockData: {
+                coinbasevalue: 596,
+                payoutOutputs: expectedOutputs,
+            },
+        };
+
+        const validation = service.validateDatumCoinbasePayouts(
+            coinbase,
+            { extranonce, targetByte: 0 },
+            latestTemplate,
+            596n,
+            undefined,
+            'pplns',
+        );
+
+        expect(validation.valid).toBe(false);
+        expect(validation.error).toBe('output-count-mismatch');
+    });
+
     it('rejects DATUM coinbases that do not pay the pool snapshot outputs', () => {
         const service = createService() as any;
         const extranonce = Buffer.alloc(12, 1);