diff --git a/src/main/java/com/iexec/commons/poco/chain/IexecHubAbstractService.java b/src/main/java/com/iexec/commons/poco/chain/IexecHubAbstractService.java
index 3d8f731..69daf00 100644
--- a/src/main/java/com/iexec/commons/poco/chain/IexecHubAbstractService.java
+++ b/src/main/java/com/iexec/commons/poco/chain/IexecHubAbstractService.java
@@ -17,10 +17,12 @@
 package com.iexec.commons.poco.chain;
 
 import com.iexec.commons.poco.contract.generated.IexecHubContract;
+import com.iexec.commons.poco.eip712.EIP712Domain;
 import com.iexec.commons.poco.task.TaskDescription;
 import com.iexec.commons.poco.utils.BytesUtils;
 import com.iexec.commons.poco.utils.MultiAddressHelper;
 import com.iexec.commons.poco.utils.Retryer;
+import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.web3j.abi.FunctionReturnDecoder;
@@ -56,10 +58,12 @@ public abstract class IexecHubAbstractService {
     public static final int MAX_RETRIES = 3;
 
     protected final Credentials credentials;
-    private final String iexecHubAddress;
     protected final RawTransactionManager txManager;
     protected final PollingTransactionReceiptProcessor txReceiptProcessor;
     protected final IexecHubContract iexecHubContract;
+    protected final String iexecHubAddress;
+    @Getter
+    private final EIP712Domain ordersDomain;
     private final Web3jAbstractService web3jAbstractService;
     private long maxNbOfPeriodsForConsensus = -1;
     private final long retryDelay;// ms
@@ -109,6 +113,7 @@ protected IexecHubAbstractService(
         );
 
         iexecHubContract = getHubContract(web3jAbstractService.getContractGasProvider());
+        ordersDomain = new EIP712Domain(web3jAbstractService.getChainId(), iexecHubAddress);
 
         log.info("Abstract IexecHubService initialized (iexec proxy address) [hubAddress:{}]",
                 iexecHubContract.getContractAddress());
diff --git a/src/test/java/com/iexec/commons/poco/itest/ContributeAndFinalizeTests.java b/src/test/java/com/iexec/commons/poco/itest/ContributeAndFinalizeTests.java
index 4b0cd0b..3601946 100644
--- a/src/test/java/com/iexec/commons/poco/itest/ContributeAndFinalizeTests.java
+++ b/src/test/java/com/iexec/commons/poco/itest/ContributeAndFinalizeTests.java
@@ -69,7 +69,7 @@ void init() throws CipherException, IOException {
         web3jService = new Web3jTestService(chainNodeAddress);
         iexecHubService = new IexecHubTestService(credentials, web3jService);
         signerService = new SignerService(web3jService.getWeb3j(), web3jService.getChainId(), credentials);
-        ordersService = new OrdersService(signerService);
+        ordersService = new OrdersService(iexecHubService.getOrdersDomain(), signerService);
     }
 
     @Test
diff --git a/src/test/java/com/iexec/commons/poco/itest/ContributeRevealFinalizeTests.java b/src/test/java/com/iexec/commons/poco/itest/ContributeRevealFinalizeTests.java
index 2899331..b81c530 100644
--- a/src/test/java/com/iexec/commons/poco/itest/ContributeRevealFinalizeTests.java
+++ b/src/test/java/com/iexec/commons/poco/itest/ContributeRevealFinalizeTests.java
@@ -72,7 +72,7 @@ void init() throws CipherException, IOException {
         web3jService = new Web3jTestService(chainNodeAddress);
         iexecHubService = new IexecHubTestService(credentials, web3jService);
         signerService = new SignerService(web3jService.getWeb3j(), web3jService.getChainId(), credentials);
-        ordersService = new OrdersService(signerService);
+        ordersService = new OrdersService(iexecHubService.getOrdersDomain(), signerService);
     }
 
     @SneakyThrows
diff --git a/src/test/java/com/iexec/commons/poco/itest/IexecHubTestService.java b/src/test/java/com/iexec/commons/poco/itest/IexecHubTestService.java
index 99889a4..1f4595d 100644
--- a/src/test/java/com/iexec/commons/poco/itest/IexecHubTestService.java
+++ b/src/test/java/com/iexec/commons/poco/itest/IexecHubTestService.java
@@ -40,15 +40,14 @@
 public class IexecHubTestService extends IexecHubAbstractService {
     static final BigInteger GAS_PRICE = BigInteger.valueOf(22_000_000_000L);
     static final BigInteger GAS_LIMIT = BigInteger.valueOf(1_000_000L);
-    static final long CHAIN_ID = 65535L;
     static final String IEXEC_HUB_ADDRESS = "0xc4b11f41746D3Ad8504da5B383E1aB9aa969AbC7";
 
     static final String ASSET_MULTI_ADDRESS = "multiAddress";
     static final String ASSET_CHECKSUM = Numeric.toHexStringNoPrefix(new byte[32]);
 
-    private static final String APP_REGISTRY_SELECTOR = "0x45b637a9";
-    private static final String DATASET_REGISTRY_SELECTOR = "0xb1b11d2c";
-    private static final String WORKERPOOL_REGISTRY_SELECTOR = "0x90a0f546";
+    static final String APP_REGISTRY_SELECTOR = "0x45b637a9";
+    static final String DATASET_REGISTRY_SELECTOR = "0xb1b11d2c";
+    static final String WORKERPOOL_REGISTRY_SELECTOR = "0x90a0f546";
 
     private final String ownerAddress;
     private final SignerService signerService;
diff --git a/src/test/java/com/iexec/commons/poco/itest/MatchOrdersTests.java b/src/test/java/com/iexec/commons/poco/itest/MatchOrdersTests.java
index 7d5ba94..d1e84ee 100644
--- a/src/test/java/com/iexec/commons/poco/itest/MatchOrdersTests.java
+++ b/src/test/java/com/iexec/commons/poco/itest/MatchOrdersTests.java
@@ -74,7 +74,7 @@ void init() throws CipherException, IOException {
         web3jService = new Web3jTestService(chainNodeAddress);
         iexecHubService = new IexecHubTestService(credentials, web3jService);
         signerService = new SignerService(web3jService.getWeb3j(), web3jService.getChainId(), credentials);
-        ordersService = new OrdersService(signerService);
+        ordersService = new OrdersService(iexecHubService.getOrdersDomain(), signerService);
     }
 
     @Test
@@ -151,10 +151,10 @@ void shouldMatchOrdersWithSignerService() throws IOException {
                 .isEqualTo(List.of("Transfer", "Lock", "Transfer", "Lock", "SchedulerNotice", "OrdersMatched"));
 
         // orders consumption
-        assertThat(iexecHubService.viewConsumed(signedAppOrder.computeHash(ordersService.getDomain()))).isEqualTo(BigInteger.ONE);
-        assertThat(iexecHubService.viewConsumed(signedDatasetOrder.computeHash(ordersService.getDomain()))).isEqualTo(BigInteger.ONE);
-        assertThat(iexecHubService.viewConsumed(signedWorkerpoolOrder.computeHash(ordersService.getDomain()))).isEqualTo(BigInteger.ONE);
-        assertThat(iexecHubService.viewConsumed(signedRequestOrder.computeHash(ordersService.getDomain()))).isEqualTo(BigInteger.ONE);
+        assertThat(iexecHubService.viewConsumed(signedAppOrder.computeHash(iexecHubService.getOrdersDomain()))).isEqualTo(BigInteger.ONE);
+        assertThat(iexecHubService.viewConsumed(signedDatasetOrder.computeHash(iexecHubService.getOrdersDomain()))).isEqualTo(BigInteger.ONE);
+        assertThat(iexecHubService.viewConsumed(signedWorkerpoolOrder.computeHash(iexecHubService.getOrdersDomain()))).isEqualTo(BigInteger.ONE);
+        assertThat(iexecHubService.viewConsumed(signedRequestOrder.computeHash(iexecHubService.getOrdersDomain()))).isEqualTo(BigInteger.ONE);
 
         // estimate gas revert
         // 0x694578656356352d6d617463684f72646572732d30783630 is hex string corresponding to the 'iExecV5-matchOrders-0x60' string
diff --git a/src/test/java/com/iexec/commons/poco/itest/OrdersService.java b/src/test/java/com/iexec/commons/poco/itest/OrdersService.java
index 753aa8f..e82b18e 100644
--- a/src/test/java/com/iexec/commons/poco/itest/OrdersService.java
+++ b/src/test/java/com/iexec/commons/poco/itest/OrdersService.java
@@ -22,7 +22,6 @@
 import com.iexec.commons.poco.encoding.MatchOrdersDataEncoder;
 import com.iexec.commons.poco.order.*;
 import com.iexec.commons.poco.utils.BytesUtils;
-import lombok.Getter;
 import org.apache.commons.lang3.RandomStringUtils;
 import org.web3j.crypto.Hash;
 
@@ -31,7 +30,8 @@
 import java.util.Map;
 import java.util.TreeMap;
 
-import static com.iexec.commons.poco.itest.IexecHubTestService.*;
+import static com.iexec.commons.poco.itest.IexecHubTestService.GAS_PRICE;
+import static com.iexec.commons.poco.itest.IexecHubTestService.IEXEC_HUB_ADDRESS;
 
 public class OrdersService {
 
@@ -39,13 +39,11 @@ public class OrdersService {
     static final String DATASET_NAME = "my-dataset";
     static final String WORKERPOOL_NAME = "my-workerpool";
 
-
-    @Getter
     private final EIP712Domain domain;
     private final SignerService signerService;
 
-    public OrdersService(SignerService signerService) {
-        this.domain = new EIP712Domain(CHAIN_ID, IEXEC_HUB_ADDRESS);
+    public OrdersService(final EIP712Domain domain, final SignerService signerService) {
+        this.domain = domain;
         this.signerService = signerService;
     }