diff --git a/beacon-interface/src/main/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHash.java b/beacon-interface/src/main/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHash.java
index 11d7b45..7561d09 100644
--- a/beacon-interface/src/main/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHash.java
+++ b/beacon-interface/src/main/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHash.java
@@ -22,9 +22,9 @@ public List<SeedUnicordCombinationVo> calcSeedConcat(ICipherSuite cipherSuite, L
             SeedSourceDto dto = seedList.get(i);
 
             if (i == 0){
-                currentValue = cipherSuite.getDigest(seedList.get(0).getSeed());
+                currentValue = cipherSuite.getDigest(concatValues(seedList.get(0)));
             } else {
-                String teste = currentValue + dto.getSeed();
+                String teste = currentValue + cipherSuite.getDigest(concatValues(dto));
                 currentValue = cipherSuite.getDigest(teste);
             }
 
@@ -36,5 +36,10 @@ public List<SeedUnicordCombinationVo> calcSeedConcat(ICipherSuite cipherSuite, L
         return out;
     }
 
+    private String concatValues(SeedSourceDto dto){
+        String concatValue = dto.getTimeStamp() + dto.getSeed().trim() + dto.getDescription().trim() + dto.getUri().trim();
+        return concatValue;
+    }
+
 }
 
diff --git a/beacon-interface/src/test/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHashTest.java b/beacon-interface/src/test/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHashTest.java
index f3c03f8..e6a556e 100644
--- a/beacon-interface/src/test/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHashTest.java
+++ b/beacon-interface/src/test/java/com/example/beacon/vdf/application/combination/CombinationUncornCumulativeHashTest.java
@@ -5,6 +5,8 @@
 import com.example.beacon.vdf.infra.util.DateUtil;
 import com.example.beacon.vdf.sources.SeedSourceDto;
 import org.junit.Assert;
+import org.junit.Before;
+import org.junit.BeforeClass;
 import org.junit.Test;
 
 import java.time.ZonedDateTime;
@@ -13,19 +15,42 @@
 
 public class CombinationUncornCumulativeHashTest {
 
-    @Test
-    public void testOneSeed(){
-        List<SeedSourceDto> seeds = new ArrayList<>();
+    private SeedSourceDto seedSourceDto1;
+    private SeedSourceDto seedSourceDto2;
+    private SeedSourceDto seedSourceDto3;
+
+    @Before
+    public void init(){
+
+        seedSourceDto1 = new SeedSourceDto();
+        seedSourceDto1.setTimeStamp("2022-04-02T19:50:00.000Z");
+        seedSourceDto1.setSeed("2E1A3C018A8D03407AD113F1A6F0E6BBE4F1CCDADA939E013EFD3B71AE81A4552EBBEB168179FC45FC39B824F550F43BC8E1C1953EBD9E401888C7276C1B94C7");
+        seedSourceDto1.setDescription("Last precommitment NIST");
+        seedSourceDto1.setUri("https://beacon.nist.gov/beacon/2.0/chain/1/pulse/1792454");
+
+        seedSourceDto2 = new SeedSourceDto();
+        seedSourceDto2.setTimeStamp("2022-04-02T19:50:00.000Z");
+        seedSourceDto2.setSeed("d70ab6656ad1a6117332e3ec0d5918e4c4990f5f42528d28cf22d780166d0090979f1bdf2a854c2461b757c70b6e2bdc170ec89d8cd1cd916e6b42396b8d59c6");
+        seedSourceDto2.setDescription("Last precommitment Chile");
+        seedSourceDto2.setUri("https://beacon.clcert.cl/beacon/2.0/chain/4/pulse/1897960");
+
+        seedSourceDto3 = new SeedSourceDto();
+        seedSourceDto3.setTimeStamp("2022-04-02T19:50:00.000Z");
+        seedSourceDto3.setSeed("fcb0354fdb2ccd3e74df669ba7880a27feea9118dec737781ff3e0791dac4a76ec0a61dbc06f6d5f69e00aa3b7395e1fe73b85ed10f1502115a4eecb5ece735b");
+        seedSourceDto3.setDescription("Local Precommitment");
+        seedSourceDto3.setUri("http://localhost:8080/beacon/2.0/chain/1/pulse/1054223");
+    }
 
-        SeedSourceDto seedSourceDto1 = new SeedSourceDto(DateUtil.getTimeStampFormated(ZonedDateTime.now()),
-                "uri", "aSeed1Test", "aDescription", null);
 
+    @Test
+    public void testOneSeedV2(){
+        List<SeedSourceDto> seeds = new ArrayList<>();
         seeds.add(seedSourceDto1);
 
         CombinationUncornCumulativeHash combinationUncornCumulativeHash = new CombinationUncornCumulativeHash();
         List<SeedUnicordCombinationVo> resultList = combinationUncornCumulativeHash.calcSeedConcat(CipherSuiteBuilder.build(0), seeds);
 
-        Assert.assertEquals("8ee0a0899c2d82b2e5b3fdc3b6c4e7d63fb35e33194089e129a131f575c87541811f8ebdb66fceb8e84e655c2e307f592a2046fdd2ace9ffa2ce6076f35814c0",
+        Assert.assertEquals("413572b69baa09c1c6c996a4c2203d0b81c5750dcb577d227eedd5c1f4df750660cf202e1f68534a19e2c3dec62a86c87f50c006302b5f27a4a064ea70eabd30",
                 resultList.get(0).getCumulativeHash());
 
         //https://emn178.github.io/online-tools/sha512.html
@@ -35,18 +60,13 @@ public void testOneSeed(){
     public void testTwoSeeds(){
         List<SeedSourceDto> seeds = new ArrayList<>();
 
-        SeedSourceDto seedSourceDto1 = new SeedSourceDto(DateUtil.getTimeStampFormated(ZonedDateTime.now()),
-                "uri", "aSeed1", "aDescription", null);
-        SeedSourceDto seedSourceDto2 = new SeedSourceDto(DateUtil.getTimeStampFormated(ZonedDateTime.now()),
-                "uri", "aSeed2", "aDescription2", null);
-
         seeds.add(seedSourceDto1);
         seeds.add(seedSourceDto2);
 
         CombinationUncornCumulativeHash combinationUncornCumulativeHash = new CombinationUncornCumulativeHash();
         List<SeedUnicordCombinationVo> resultList = combinationUncornCumulativeHash.calcSeedConcat(CipherSuiteBuilder.build(0), seeds);
 
-        Assert.assertEquals("175a91bccfefb53dad84d4a1ea49e66e2fe846f3210e3550c1fd874bdbe283965815b6f8db2caa5e9d0fc15b6fbd8810f3017e6ac315e828e75191a94128ceda",
+        Assert.assertEquals("c23e377470c3008dc629c1dc01326f724f9f622bb15ba8600d75ae97ad1fdd2afce2a36596206f5f739d58a408aac1be5428f2e86323c8e137cd2e7264d8e380",
                 resultList.get(1).getCumulativeHash());
 
         //https://emn178.github.io/online-tools/sha512.html
@@ -56,13 +76,6 @@ public void testTwoSeeds(){
     public void testThreeSeeds(){
         List<SeedSourceDto> seeds = new ArrayList<>();
 
-        SeedSourceDto seedSourceDto1 = new SeedSourceDto(DateUtil.getTimeStampFormated(ZonedDateTime.now()),
-                "uri", "aSeed1", "aDescription", null);
-        SeedSourceDto seedSourceDto2 = new SeedSourceDto(DateUtil.getTimeStampFormated(ZonedDateTime.now()),
-                "uri", "aSeed2", "aDescription2", null);
-        SeedSourceDto seedSourceDto3 = new SeedSourceDto(DateUtil.getTimeStampFormated(ZonedDateTime.now()),
-                "uri", "aSeed2Test3", "aDescription2", null);
-
         seeds.add(seedSourceDto1);
         seeds.add(seedSourceDto2);
         seeds.add(seedSourceDto3);
@@ -70,11 +83,10 @@ public void testThreeSeeds(){
         CombinationUncornCumulativeHash combinationUncornCumulativeHash = new CombinationUncornCumulativeHash();
         List<SeedUnicordCombinationVo> resultList = combinationUncornCumulativeHash.calcSeedConcat(CipherSuiteBuilder.build(0), seeds);
 
-        Assert.assertEquals("132543ac76c98f8b17c4893a275acb0871deea83726929dc391f93de435e763b9c739adaad329e0cdbc29e4c578f31ab702af4682c979f0837a7e9327299d179",
+        Assert.assertEquals("cf5e22ac8bbf706ec2499b5e211aa49944cff1dc12582b2c5369f3679ae4f2560a6904206a042194e1f05a8ecf720c0afd6221d0cd59e7246797cc54457125f2",
                 resultList.get(2).getCumulativeHash());
 
         //https://emn178.github.io/online-tools/sha512.html
     }
 
-
 }
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