diff --git a/core/src/main/java/org/bitcoinj/kits/WalletAppKit.java b/core/src/main/java/org/bitcoinj/kits/WalletAppKit.java
index 7554845e9..57e3f6f2e 100644
--- a/core/src/main/java/org/bitcoinj/kits/WalletAppKit.java
+++ b/core/src/main/java/org/bitcoinj/kits/WalletAppKit.java
@@ -516,7 +516,7 @@ public class WalletAppKit extends AbstractIdleService implements Closeable {
         else
             kcg.fromRandom(preferredOutputScriptType);
 
-        return walletFactory.create(params, kcg.build());
+        return walletFactory.create(network, kcg.build());
     }
 
     private void maybeMoveOldWalletOutOfTheWay() {
diff --git a/core/src/main/java/org/bitcoinj/wallet/Wallet.java b/core/src/main/java/org/bitcoinj/wallet/Wallet.java
index 8fe1d79ae..b671c380e 100644
--- a/core/src/main/java/org/bitcoinj/wallet/Wallet.java
+++ b/core/src/main/java/org/bitcoinj/wallet/Wallet.java
@@ -246,6 +246,7 @@ public class Wallet extends BaseTaggableObject
     // A list of scripts watched by this wallet.
     @GuardedBy("keyChainGroupLock") private final Set<Script> watchedScripts;
 
+    protected final Network network;
     protected final NetworkParameters params;
 
     @Nullable private Sha256Hash lastBlockSeenHash;
@@ -334,7 +335,7 @@ public class Wallet extends BaseTaggableObject
      * @return A new empty wallet
      */
     public static Wallet createDeterministic(NetworkParameters params, ScriptType outputScriptType, KeyChainGroupStructure keyChainGroupStructure) {
-        return new Wallet(params, KeyChainGroup.builder(params, keyChainGroupStructure).fromRandom(outputScriptType).build());
+        return new Wallet(params.network(), KeyChainGroup.builder(params, keyChainGroupStructure).fromRandom(outputScriptType).build());
     }
 
     /**
@@ -343,7 +344,7 @@ public class Wallet extends BaseTaggableObject
      * @param params network parameters
      */
     public static Wallet createBasic(NetworkParameters params) {
-        return new Wallet(params, KeyChainGroup.createBasic(params));
+        return new Wallet(params.network(), KeyChainGroup.createBasic(params));
     }
 
     /**
@@ -366,7 +367,7 @@ public class Wallet extends BaseTaggableObject
      */
     public static Wallet fromSeed(NetworkParameters params, DeterministicSeed seed, ScriptType outputScriptType,
             KeyChainGroupStructure structure) {
-        return new Wallet(params, KeyChainGroup.builder(params, structure).fromSeed(seed, outputScriptType).build());
+        return new Wallet(params.network(), KeyChainGroup.builder(params, structure).fromSeed(seed, outputScriptType).build());
     }
 
     /**
@@ -380,7 +381,7 @@ public class Wallet extends BaseTaggableObject
             List<ChildNumber> accountPath) {
         DeterministicKeyChain chain = DeterministicKeyChain.builder().seed(seed).outputScriptType(outputScriptType)
                 .accountPath(accountPath).build();
-        return new Wallet(params, KeyChainGroup.builder(params).addChain(chain).build());
+        return new Wallet(params.network(), KeyChainGroup.builder(params).addChain(chain).build());
     }
 
     /**
@@ -391,7 +392,7 @@ public class Wallet extends BaseTaggableObject
             ScriptType outputScriptType) {
         DeterministicKeyChain chain = DeterministicKeyChain.builder().watch(watchKey).outputScriptType(outputScriptType)
                 .build();
-        return new Wallet(params, KeyChainGroup.builder(params).addChain(chain).build());
+        return new Wallet(params.network(), KeyChainGroup.builder(params).addChain(chain).build());
     }
 
      /**
@@ -437,7 +438,7 @@ public class Wallet extends BaseTaggableObject
             ScriptType outputScriptType) {
         DeterministicKeyChain chain = DeterministicKeyChain.builder().spend(spendKey).outputScriptType(outputScriptType)
                 .build();
-        return new Wallet(params, KeyChainGroup.builder(params).addChain(chain).build());
+        return new Wallet(params.network(), KeyChainGroup.builder(params).addChain(chain).build());
     }
 
     /**
@@ -489,7 +490,7 @@ public class Wallet extends BaseTaggableObject
             accountKey.clearCreationTime();
         DeterministicKeyChain chain = DeterministicKeyChain.builder().spend(accountKey)
                 .outputScriptType(outputScriptType).build();
-        return new Wallet(params, KeyChainGroup.builder(params).addChain(chain).build());
+        return new Wallet(params.network(), KeyChainGroup.builder(params).addChain(chain).build());
     }
 
     private static ScriptType outputScriptTypeFromB58(NetworkParameters params, String base58) {
@@ -506,12 +507,13 @@ public class Wallet extends BaseTaggableObject
      * Creates a new, empty wallet with a randomly chosen seed and no transactions. Make sure to provide for sufficient
      * backup! Any keys will be derived from the seed. If you want to restore a wallet from disk instead, see
      * {@link #loadFromFile}.
-     * @param params network parameters
+     * @param network network to operate on
      * @param keyChainGroup keychain group to manage keychains
      */
-    public Wallet(NetworkParameters params, KeyChainGroup keyChainGroup) {
-        this.params = Objects.requireNonNull(params);
-        this.coinSelector = DefaultCoinSelector.get(params.network());
+    public Wallet(Network network, KeyChainGroup keyChainGroup) {
+        this.network = Objects.requireNonNull(network);
+        this.params = NetworkParameters.of(network);
+        this.coinSelector = DefaultCoinSelector.get(network);
         this.keyChainGroup = Objects.requireNonNull(keyChainGroup);
         watchedScripts = new HashSet<>();
         unspent = new HashMap<>();
@@ -527,6 +529,14 @@ public class Wallet extends BaseTaggableObject
         createTransientState();
     }
 
+    /**
+     * @deprecated  use {@link Wallet(NetworkParameters, KeyChainGroup)}
+     */
+    @Deprecated
+    public Wallet(NetworkParameters params, KeyChainGroup keyChainGroup) {
+        this(params.network(), keyChainGroup);
+    }
+
     private void createTransientState() {
         ignoreNextNewBlock = new HashSet<>();
         txConfidenceListener = (confidence, reason) -> {
@@ -552,7 +562,7 @@ public class Wallet extends BaseTaggableObject
     }
 
     public Network network() {
-        return params.network();
+        return network;
     }
 
     public NetworkParameters getNetworkParameters() {
@@ -567,7 +577,7 @@ public class Wallet extends BaseTaggableObject
      */
     @Override
     public Address parseAddress(String addressString) throws AddressFormatException {
-        return addressParser.parseAddress(addressString, (BitcoinNetwork) params.network());
+        return addressParser.parseAddress(addressString, network);
     }
 
     /**
@@ -1195,7 +1205,7 @@ public class Wallet extends BaseTaggableObject
             List<Address> addresses = new LinkedList<>();
             for (Script script : watchedScripts)
                 if (ScriptPattern.isP2PKH(script))
-                    addresses.add(script.getToAddress(params.network()));
+                    addresses.add(script.getToAddress(network));
             return addresses;
         } finally {
             keyChainGroupLock.unlock();
@@ -2001,7 +2011,7 @@ public class Wallet extends BaseTaggableObject
         // spend against one of our other pending transactions.
         lock.lock();
         try {
-            Transaction.verify(params.network(), tx);
+            Transaction.verify(network, tx);
             // Ignore it if we already know about this transaction. Receiving a pending transaction never moves it
             // between pools.
             EnumSet<Pool> containingPools = getContainingPools(tx);
@@ -2780,7 +2790,7 @@ public class Wallet extends BaseTaggableObject
      * @throws VerificationException If transaction fails to verify
      */
     public boolean maybeCommitTx(Transaction tx) throws VerificationException {
-        Transaction.verify(params.network(), tx);
+        Transaction.verify(network, tx);
         lock.lock();
         try {
             if (pending.containsKey(tx.getTxId()))
@@ -3871,7 +3881,7 @@ public class Wallet extends BaseTaggableObject
         try {
             Objects.requireNonNull(selector);
             List<TransactionOutput> candidates = calculateAllSpendCandidates(true, false);
-            CoinSelection selection = selector.select((Coin) params.network().maxMoney(), candidates);
+            CoinSelection selection = selector.select((Coin) network.maxMoney(), candidates);
             return selection.totalValue();
         } finally {
             lock.unlock();
@@ -4468,7 +4478,7 @@ public class Wallet extends BaseTaggableObject
                 checkState(req.tx.getOutputs().size() == 1, () ->
                         "empty wallet TX must have a single output only");
                 CoinSelector selector = req.coinSelector == null ? coinSelector : req.coinSelector;
-                bestCoinSelection = selector.select((Coin) params.network().maxMoney(), candidates);
+                bestCoinSelection = selector.select((Coin) network.maxMoney(), candidates);
                 candidates = null;  // Selector took ownership and might have changed candidates. Don't access again.
                 req.tx.getOutput(0).setValue(bestCoinSelection.totalValue());
                 log.info("  emptying {}", bestCoinSelection.totalValue().toFriendlyString());
@@ -4756,7 +4766,7 @@ public class Wallet extends BaseTaggableObject
     public void setUTXOProvider(@Nullable UTXOProvider provider) {
         lock.lock();
         try {
-            checkArgument(provider == null || provider.network() == params.network());
+            checkArgument(provider == null || provider.network() == network);
             this.vUTXOProvider = provider;
         } finally {
             lock.unlock();
diff --git a/core/src/main/java/org/bitcoinj/wallet/WalletProtobufSerializer.java b/core/src/main/java/org/bitcoinj/wallet/WalletProtobufSerializer.java
index e6c366bee..933cec906 100644
--- a/core/src/main/java/org/bitcoinj/wallet/WalletProtobufSerializer.java
+++ b/core/src/main/java/org/bitcoinj/wallet/WalletProtobufSerializer.java
@@ -22,6 +22,7 @@ import com.google.protobuf.CodedInputStream;
 import com.google.protobuf.CodedOutputStream;
 import com.google.protobuf.WireFormat;
 import org.bitcoinj.base.Coin;
+import org.bitcoinj.base.Network;
 import org.bitcoinj.core.LockTime;
 import org.bitcoinj.core.NetworkParameters;
 import org.bitcoinj.core.PeerAddress;
@@ -100,7 +101,11 @@ public class WalletProtobufSerializer {
 
     @FunctionalInterface
     public interface WalletFactory {
-        Wallet create(NetworkParameters params, KeyChainGroup keyChainGroup);
+        Wallet create(Network network, KeyChainGroup keyChainGroup);
+        @Deprecated
+        default Wallet create(NetworkParameters params, KeyChainGroup keyChainGroup) {
+            return create(params.network(), keyChainGroup);
+        }
         WalletFactory DEFAULT = Wallet::new;
     }
 
@@ -498,7 +503,7 @@ public class WalletProtobufSerializer {
         } else {
             keyChainGroup = KeyChainGroup.fromProtobufUnencrypted(params, walletProto.getKeyList(), keyChainFactory);
         }
-        Wallet wallet = factory.create(params, keyChainGroup);
+        Wallet wallet = factory.create(params.network(), keyChainGroup);
 
         List<Script> scripts = new ArrayList<>();
         for (Protos.Script protoScript : walletProto.getWatchedScriptList()) {
diff --git a/core/src/test/java/org/bitcoinj/core/BloomFilterTest.java b/core/src/test/java/org/bitcoinj/core/BloomFilterTest.java
index 2f40f276f..71fe6dacf 100644
--- a/core/src/test/java/org/bitcoinj/core/BloomFilterTest.java
+++ b/core/src/test/java/org/bitcoinj/core/BloomFilterTest.java
@@ -88,7 +88,7 @@ public class BloomFilterTest {
         KeyChainGroup group = KeyChainGroup.builder(MAINNET).build();
         // Add a random key which happens to have been used in a recent generation
         group.importKeys(ECKey.fromPublicOnly(privKey.getKey()), ECKey.fromPublicOnly(ByteUtils.parseHex("03cb219f69f1b49468bd563239a86667e74a06fcba69ac50a08a5cbc42a5808e99")));
-        Wallet wallet = new Wallet(MAINNET, group);
+        Wallet wallet = new Wallet(BitcoinNetwork.MAINNET, group);
         wallet.commitTx(new Transaction(ByteBuffer.wrap(ByteUtils.parseHex("01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff0d038754030114062f503253482fffffffff01c05e559500000000232103cb219f69f1b49468bd563239a86667e74a06fcba69ac50a08a5cbc42a5808e99ac00000000"))));
         
         // We should have 2 per pubkey, and one for the P2PK output we have
diff --git a/core/src/test/java/org/bitcoinj/store/WalletProtobufSerializerTest.java b/core/src/test/java/org/bitcoinj/store/WalletProtobufSerializerTest.java
index 9417abf35..cd5af3673 100644
--- a/core/src/test/java/org/bitcoinj/store/WalletProtobufSerializerTest.java
+++ b/core/src/test/java/org/bitcoinj/store/WalletProtobufSerializerTest.java
@@ -109,7 +109,7 @@ public class WalletProtobufSerializerTest {
         myKey = new ECKey();
         myKey.setCreationTime(Instant.ofEpochSecond(123456789L));
         myAddress = myKey.toAddress(ScriptType.P2PKH, BitcoinNetwork.TESTNET);
-        myWallet = new Wallet(TESTNET, KeyChainGroup.builder(TESTNET).fromRandom(ScriptType.P2PKH).build());
+        myWallet = new Wallet(BitcoinNetwork.TESTNET, KeyChainGroup.builder(TESTNET).fromRandom(ScriptType.P2PKH).build());
         myWallet.importKey(myKey);
         mScriptCreationTime = TimeUtils.currentTime().minusSeconds(1234);
         myWallet.addWatchedAddress(myWatchedKey.toAddress(ScriptType.P2PKH, BitcoinNetwork.TESTNET), mScriptCreationTime);
diff --git a/core/src/test/java/org/bitcoinj/wallet/WalletTest.java b/core/src/test/java/org/bitcoinj/wallet/WalletTest.java
index 651dc6106..822dc2b26 100644
--- a/core/src/test/java/org/bitcoinj/wallet/WalletTest.java
+++ b/core/src/test/java/org/bitcoinj/wallet/WalletTest.java
@@ -224,7 +224,7 @@ public class WalletTest extends TestWithWallet {
                         .outputScriptType(ScriptType.P2WPKH)
                         .accountPath(DeterministicKeyChain.BIP44_ACCOUNT_ZERO_PATH).build())
                 .build();
-        Wallet encryptedWallet = new Wallet(TESTNET, keyChainGroup);
+        Wallet encryptedWallet = new Wallet(BitcoinNetwork.TESTNET, keyChainGroup);
         encryptedWallet = roundTrip(encryptedWallet);
         encryptedWallet.encrypt(PASSWORD1);
         encryptedWallet = roundTrip(encryptedWallet);
@@ -3219,7 +3219,7 @@ public class WalletTest extends TestWithWallet {
     @Test
     public void keyEvents() {
         // Check that we can register an event listener, generate some keys and the callbacks are invoked properly.
-        wallet = new Wallet(TESTNET, KeyChainGroup.builder(TESTNET).fromRandom(ScriptType.P2PKH).build());
+        wallet = new Wallet(BitcoinNetwork.TESTNET, KeyChainGroup.builder(TESTNET).fromRandom(ScriptType.P2PKH).build());
         final List<ECKey> keys = new LinkedList<>();
         wallet.addKeyChainEventListener(Threading.SAME_THREAD, keys::addAll);
         wallet.freshReceiveKey();
@@ -3504,7 +3504,7 @@ public class WalletTest extends TestWithWallet {
         DeterministicKeyChain p2wpkhChain = DeterministicKeyChain.builder().random(new SecureRandom())
                 .outputScriptType(ScriptType.P2WPKH).build();
         KeyChainGroup kcg = KeyChainGroup.builder(TESTNET).addChain(p2pkhChain).addChain(p2wpkhChain).build();
-        Wallet wallet = new Wallet(TESTNET, kcg);
+        Wallet wallet = new Wallet(BitcoinNetwork.TESTNET, kcg);
 
         // Set up one key from each chain.
         ECKey importedKey = new ECKey();
diff --git a/integration-test/src/test/java/org/bitcoinj/testing/TestWithNetworkConnections.java b/integration-test/src/test/java/org/bitcoinj/testing/TestWithNetworkConnections.java
index f2117884e..235b9b720 100644
--- a/integration-test/src/test/java/org/bitcoinj/testing/TestWithNetworkConnections.java
+++ b/integration-test/src/test/java/org/bitcoinj/testing/TestWithNetworkConnections.java
@@ -113,7 +113,7 @@ public class TestWithNetworkConnections {
             // Reduce the number of keys we need to work with to speed up these tests.
             KeyChainGroup kcg = KeyChainGroup.builder(UNITTEST).lookaheadSize(4).lookaheadThreshold(2)
                     .fromRandom(ScriptType.P2PKH).build();
-            wallet = new Wallet(UNITTEST, kcg);
+            wallet = new Wallet(UNITTEST.network(), kcg);
             address = wallet.freshReceiveAddress(ScriptType.P2PKH);
         }
         blockChain = new BlockChain(UNITTEST, wallet, blockStore);