diff --git a/AntSharesCore/Core/Blockchain.cs b/AntSharesCore/Core/Blockchain.cs
index b093f529fd..6a0ff714d4 100644
--- a/AntSharesCore/Core/Blockchain.cs
+++ b/AntSharesCore/Core/Blockchain.cs
@@ -26,7 +26,7 @@ public abstract class Blockchain : IDisposable
             ECPoint.DecodePoint("039dafd8571a641058ccc832c5e2111ea39b09c0bde36050914384f7a48bce9bf9".HexToBytes(), ECCurve.Secp256r1),
             ECPoint.DecodePoint("038dddc06ce687677a53d54f096d2591ba2302068cf123c1f2d75c2dddc5425579".HexToBytes(), ECCurve.Secp256r1),
         };
-        public static readonly Block GenesisBlock = "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".HexToBytes().AsSerializable<Block>();
+        public static readonly Block GenesisBlock = "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".HexToBytes().AsSerializable<Block>();
         public static readonly RegisterTransaction AntShare = (RegisterTransaction)GenesisBlock.Transactions[1];
         public static readonly RegisterTransaction AntCoin = new RegisterTransaction
         {
@@ -39,6 +39,7 @@ public abstract class Blockchain : IDisposable
             Amount = Fixed8.FromDecimal(100000000),
             Issuer = ECCurve.Secp256r1.Infinity,
             Admin = new UInt160(),
+            Attributes = new TransactionAttribute[0],
             Inputs = new TransactionInput[0],
             Outputs = new TransactionOutput[0],
             Scripts = new Script[0]
diff --git a/AntSharesCore/Core/ContractTransaction.cs b/AntSharesCore/Core/ContractTransaction.cs
index 05f5945c5c..d3e00db176 100644
--- a/AntSharesCore/Core/ContractTransaction.cs
+++ b/AntSharesCore/Core/ContractTransaction.cs
@@ -1,43 +1,10 @@
-using AntShares.IO;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-
-namespace AntShares.Core
+namespace AntShares.Core
 {
     public class ContractTransaction : Transaction
     {
-        public TransactionAttribute[] Attributes;
-
         public ContractTransaction()
             : base(TransactionType.ContractTransaction)
         {
         }
-
-        protected override void DeserializeExclusiveData(BinaryReader reader)
-        {
-            this.Attributes = reader.ReadSerializableArray<TransactionAttribute>();
-        }
-
-        public override UInt160[] GetScriptHashesForVerifying()
-        {
-            HashSet<UInt160> hashes = new HashSet<UInt160>(base.GetScriptHashesForVerifying());
-            foreach (var group in Outputs.GroupBy(p => p.AssetId))
-            {
-                RegisterTransaction tx = Blockchain.Default.GetTransaction(group.Key) as RegisterTransaction;
-                if (tx == null) throw new InvalidOperationException();
-                if (tx.AssetType == AssetType.Share)
-                {
-                    hashes.UnionWith(group.Select(p => p.ScriptHash));
-                }
-            }
-            return hashes.OrderBy(p => p).ToArray();
-        }
-
-        protected override void SerializeExclusiveData(BinaryWriter writer)
-        {
-            writer.Write(Attributes);
-        }
     }
 }
diff --git a/AntSharesCore/Core/IssueTransaction.cs b/AntSharesCore/Core/IssueTransaction.cs
index 4bd18b5e34..3ada5e50a5 100644
--- a/AntSharesCore/Core/IssueTransaction.cs
+++ b/AntSharesCore/Core/IssueTransaction.cs
@@ -1,43 +1,30 @@
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
 
 namespace AntShares.Core
 {
     public class IssueTransaction : Transaction
     {
-        public override Fixed8 SystemFee => Outputs.All(p => p.AssetId == Blockchain.AntShare.Hash) ? Fixed8.Zero : Fixed8.FromDecimal(500);
+        public override Fixed8 SystemFee => Outputs.All(p => p.AssetId == Blockchain.AntShare.Hash || p.AssetId == Blockchain.AntCoin.Hash) ? Fixed8.Zero : Fixed8.FromDecimal(500);
 
         public IssueTransaction()
-                    : base(TransactionType.IssueTransaction)
-        {
-        }
-
-        protected override void DeserializeExclusiveData(BinaryReader reader)
+            : base(TransactionType.IssueTransaction)
         {
         }
 
         public override UInt160[] GetScriptHashesForVerifying()
         {
             HashSet<UInt160> hashes = new HashSet<UInt160>(base.GetScriptHashesForVerifying());
-            foreach (var group in Outputs.GroupBy(p => p.AssetId))
+            foreach (TransactionResult result in GetTransactionResults().Where(p => p.Amount < Fixed8.Zero))
             {
-                RegisterTransaction tx = Blockchain.Default.GetTransaction(group.Key) as RegisterTransaction;
+                RegisterTransaction tx = Blockchain.Default.GetTransaction(result.AssetId) as RegisterTransaction;
                 if (tx == null) throw new InvalidOperationException();
                 hashes.Add(tx.Admin);
-                if (tx.AssetType == AssetType.Share)
-                {
-                    hashes.UnionWith(group.Select(p => p.ScriptHash));
-                }
             }
             return hashes.OrderBy(p => p).ToArray();
         }
 
-        protected override void SerializeExclusiveData(BinaryWriter writer)
-        {
-        }
-
         public override bool Verify()
         {
             if (!base.Verify()) return false;
diff --git a/AntSharesCore/Core/RegisterTransaction.cs b/AntSharesCore/Core/RegisterTransaction.cs
index f3594724a5..1e42873ead 100644
--- a/AntSharesCore/Core/RegisterTransaction.cs
+++ b/AntSharesCore/Core/RegisterTransaction.cs
@@ -28,6 +28,8 @@ public class RegisterTransaction : Transaction
         public ECPoint Issuer;
         public UInt160 Admin;
 
+        private static readonly string ShareName = "[{'lang':'zh-CN','name':'股权'},{'lang':'en','name':'Share'}]";
+
         public override Fixed8 SystemFee => Fixed8.FromDecimal(10000);
 
         public RegisterTransaction()
@@ -55,16 +57,10 @@ protected override void DeserializeExclusiveData(BinaryReader reader)
         private Dictionary<CultureInfo, string> _names;
         public string GetName(CultureInfo culture = null)
         {
-            if (AssetType == AssetType.Share)
-            {
-                //TODO: 获取证书上的名称
-                //股权的名称由证书上的公司名称决定，不能自定义
-                //目前实名认证的相关设计还没有完全定型，所以暂时先不实现股权资产的名称查询
-                throw new NotImplementedException();
-            }
+            string name_str = AssetType == AssetType.Share ? ShareName : Name;
             if (_names == null)
             {
-                _names = ((JArray)JObject.Parse(Name)).ToDictionary(p => CultureInfo.GetCultureInfo(p["lang"].AsString()), p => p["name"].AsString());
+                _names = ((JArray)JObject.Parse(name_str)).ToDictionary(p => CultureInfo.GetCultureInfo(p["lang"].AsString()), p => p["name"].AsString());
             }
             if (culture == null) culture = CultureInfo.CurrentCulture;
             if (_names.ContainsKey(culture))
@@ -98,9 +94,6 @@ protected override void SerializeExclusiveData(BinaryWriter writer)
 
         public override string ToString()
         {
-            //TODO: 在资产名称的后面加上发行者的名称
-            //如：CNY(由xxx公司发行)
-            //用以区分不同主体发行的相同名称的资产
             return GetName();
         }
     }
diff --git a/AntSharesCore/Core/Transaction.cs b/AntSharesCore/Core/Transaction.cs
index 9c79275e7b..99e8e0f689 100644
--- a/AntSharesCore/Core/Transaction.cs
+++ b/AntSharesCore/Core/Transaction.cs
@@ -12,6 +12,7 @@ namespace AntShares.Core
     public abstract class Transaction : Inventory, ISignable
     {
         public readonly TransactionType Type;
+        public TransactionAttribute[] Attributes;
         public TransactionInput[] Inputs;
         public TransactionOutput[] Outputs;
         public Script[] Scripts;
@@ -71,7 +72,9 @@ public override void Deserialize(BinaryReader reader)
             Scripts = reader.ReadSerializableArray<Script>();
         }
 
-        protected abstract void DeserializeExclusiveData(BinaryReader reader);
+        protected virtual void DeserializeExclusiveData(BinaryReader reader)
+        {
+        }
 
         public static Transaction DeserializeFrom(byte[] value)
         {
@@ -104,6 +107,7 @@ void ISignable.DeserializeUnsigned(BinaryReader reader)
         private void DeserializeUnsignedWithoutType(BinaryReader reader)
         {
             DeserializeExclusiveData(reader);
+            Attributes = reader.ReadSerializableArray<TransactionAttribute>();
             Inputs = reader.ReadSerializableArray<TransactionInput>();
             TransactionInput[] inputs = GetAllInputs().ToArray();
             for (int i = 1; i < inputs.Length; i++)
@@ -121,7 +125,17 @@ public virtual IEnumerable<TransactionInput> GetAllInputs()
         public virtual UInt160[] GetScriptHashesForVerifying()
         {
             if (References == null) throw new InvalidOperationException();
-            return Inputs.Select(p => References[p].ScriptHash).OrderBy(p => p).ToArray();
+            HashSet<UInt160> hashes = new HashSet<UInt160>(Inputs.Select(p => References[p].ScriptHash));
+            foreach (var group in Outputs.GroupBy(p => p.AssetId))
+            {
+                RegisterTransaction tx = Blockchain.Default.GetTransaction(group.Key) as RegisterTransaction;
+                if (tx == null) throw new InvalidOperationException();
+                if (tx.AssetType == AssetType.Share)
+                {
+                    hashes.UnionWith(group.Select(p => p.ScriptHash));
+                }
+            }
+            return hashes.OrderBy(p => p).ToArray();
         }
 
         public IEnumerable<TransactionResult> GetTransactionResults()
@@ -152,12 +166,15 @@ public override void Serialize(BinaryWriter writer)
             writer.Write(Scripts);
         }
 
-        protected abstract void SerializeExclusiveData(BinaryWriter writer);
+        protected virtual void SerializeExclusiveData(BinaryWriter writer)
+        {
+        }
 
         void ISignable.SerializeUnsigned(BinaryWriter writer)
         {
             writer.Write((byte)Type);
             SerializeExclusiveData(writer);
+            writer.Write(Attributes);
             writer.Write(Inputs);
             writer.Write(Outputs);
         }
diff --git a/AntSharesCore/Cryptography/ECC/ECPoint.cs b/AntSharesCore/Cryptography/ECC/ECPoint.cs
index c85a1f1a63..92640f2860 100644
--- a/AntSharesCore/Cryptography/ECC/ECPoint.cs
+++ b/AntSharesCore/Cryptography/ECC/ECPoint.cs
@@ -134,6 +134,8 @@ public bool Equals(ECPoint other)
         {
             if (ReferenceEquals(this, other)) return true;
             if (ReferenceEquals(null, other)) return false;
+            if (IsInfinity && other.IsInfinity) return true;
+            if (IsInfinity || other.IsInfinity) return false;
             return X.Equals(other.X) && Y.Equals(other.Y);
         }
 
diff --git a/AntSharesCore/Fixed8.cs b/AntSharesCore/Fixed8.cs
index 03ca789ecf..0e1065cb7b 100644
--- a/AntSharesCore/Fixed8.cs
+++ b/AntSharesCore/Fixed8.cs
@@ -116,6 +116,11 @@ public override string ToString()
             return ToDecimal().ToString();
         }
 
+        public string ToString(string format)
+        {
+            return ToDecimal().ToString(format);
+        }
+
         public string ToString(string format, IFormatProvider formatProvider)
         {
             return ToDecimal().ToString(format, formatProvider);
diff --git a/AntSharesCore/Implementations/Blockchains/LevelDB/LevelDBBlockchain.cs b/AntSharesCore/Implementations/Blockchains/LevelDB/LevelDBBlockchain.cs
index f1d38ac387..a32e920faa 100644
--- a/AntSharesCore/Implementations/Blockchains/LevelDB/LevelDBBlockchain.cs
+++ b/AntSharesCore/Implementations/Blockchains/LevelDB/LevelDBBlockchain.cs
@@ -38,7 +38,7 @@ public LevelDBBlockchain(string path)
             Version version;
             Slice value;
             db = DB.Open(path);
-            if (db.TryGet(ReadOptions.Default, SliceBuilder.Begin(DataEntryPrefix.CFG_Version), out value) && Version.TryParse(value.ToString(), out version) && version >= Version.Parse("0.3"))
+            if (db.TryGet(ReadOptions.Default, SliceBuilder.Begin(DataEntryPrefix.CFG_Version), out value) && Version.TryParse(value.ToString(), out version) && version >= Version.Parse("0.3.5834.28142"))
             {
                 ReadOptions options = new ReadOptions { FillCache = false };
                 value = db.Get(options, SliceBuilder.Begin(DataEntryPrefix.SYS_CurrentBlock));
diff --git a/AntSharesCore/Implementations/Wallets/EntityFramework/Key.cs b/AntSharesCore/Implementations/Wallets/EntityFramework/Key.cs
index 1194d258cb..0a2cf4a74e 100644
--- a/AntSharesCore/Implementations/Wallets/EntityFramework/Key.cs
+++ b/AntSharesCore/Implementations/Wallets/EntityFramework/Key.cs
@@ -2,9 +2,6 @@
 {
     internal class Key
     {
-        public const string MasterKey = "MasterKey";
-        public const string IV = "IV";
-
         public string Name { get; set; }
         public byte[] Value { get; set; }
     }
diff --git a/AntSharesCore/Network/LocalNode.cs b/AntSharesCore/Network/LocalNode.cs
index 080bdb5178..1ddc8da21d 100644
--- a/AntSharesCore/Network/LocalNode.cs
+++ b/AntSharesCore/Network/LocalNode.cs
@@ -372,8 +372,13 @@ public void Start(int port = DEFAULT_PORT)
         {
             if (Interlocked.Exchange(ref started, 1) == 0)
             {
-                IPHostEntry localhost = Dns.GetHostEntry(Dns.GetHostName());
-                IPAddress address = localhost.AddressList.FirstOrDefault(p => p.AddressFamily == AddressFamily.InterNetwork && !IPAddress.IsLoopback(p) && !IsIntranetAddress(p));
+                IPHostEntry localhost = null;
+                try
+                {
+                    localhost = Dns.GetHostEntry(Dns.GetHostName());
+                }
+                catch (SocketException) { }
+                IPAddress address = localhost?.AddressList.FirstOrDefault(p => p.AddressFamily == AddressFamily.InterNetwork && !IPAddress.IsLoopback(p) && !IsIntranetAddress(p));
                 if (address == null && UpnpEnabled && UPnP.Discover())
                 {
                     address = UPnP.GetExternalIP();
diff --git a/AntSharesCore/Network/RemoteNode.cs b/AntSharesCore/Network/RemoteNode.cs
index 7e3f9e3b5f..9fae81cc60 100644
--- a/AntSharesCore/Network/RemoteNode.cs
+++ b/AntSharesCore/Network/RemoteNode.cs
@@ -429,6 +429,11 @@ private void RunProtocol()
                 {
                     OnMessageReceived(message);
                 }
+                catch (EndOfStreamException)
+                {
+                    Disconnect(true);
+                    break;
+                }
                 catch (FormatException)
                 {
                     Disconnect(true);
diff --git a/AntSharesCore/Wallets/Wallet.cs b/AntSharesCore/Wallets/Wallet.cs
index 622ac80135..c5e4142ec6 100644
--- a/AntSharesCore/Wallets/Wallet.cs
+++ b/AntSharesCore/Wallets/Wallet.cs
@@ -3,6 +3,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
 using System.Security;
 using System.Security.Cryptography;
 using System.Threading;
@@ -47,10 +48,12 @@ private Wallet(string path, byte[] passwordKey, bool create)
                     rng.GetNonZeroBytes(iv);
                     rng.GetNonZeroBytes(masterKey);
                 }
+                Version current_version = Assembly.GetExecutingAssembly().GetName().Version;
                 BuildDatabase();
                 SaveStoredData("PasswordHash", passwordKey.Sha256());
                 SaveStoredData("IV", iv);
                 SaveStoredData("MasterKey", masterKey.AesEncrypt(passwordKey, iv));
+                SaveStoredData("Version", new[] { current_version.Major, current_version.Minor, current_version.Build, current_version.Revision }.Select(p => BitConverter.GetBytes(p)).SelectMany(p => p).ToArray());
                 SaveStoredData("Height", BitConverter.GetBytes(current_height));
                 ProtectedMemory.Protect(masterKey, MemoryProtectionScope.SameProcess);
             }
@@ -368,9 +371,15 @@ public virtual Account Import(string wif)
 
         protected abstract IEnumerable<UnspentCoin> LoadUnspentCoins(bool is_change);
 
-        public SignatureContext MakeTransaction(TransactionOutput[] outputs, Fixed8 fee)
+        public T MakeTransaction<T>(TransactionOutput[] outputs, Fixed8 fee) where T : Transaction, new()
         {
-            var pay_total = outputs.GroupBy(p => p.AssetId, (k, g) => new
+            T tx = new T
+            {
+                Attributes = new TransactionAttribute[0],
+                Outputs = outputs
+            };
+            fee += tx.SystemFee;
+            var pay_total = (typeof(T) == typeof(IssueTransaction) ? new TransactionOutput[0] : outputs).GroupBy(p => p.AssetId, (k, g) => new
             {
                 AssetId = k,
                 Value = g.Sum(p => p.Value)
@@ -416,12 +425,9 @@ public SignatureContext MakeTransaction(TransactionOutput[] outputs, Fixed8 fee)
                     });
                 }
             }
-            return new SignatureContext(new ContractTransaction
-            {
-                Attributes = new TransactionAttribute[0],
-                Inputs = coins.Values.SelectMany(p => p.Unspents).Select(p => p.Input).ToArray(),
-                Outputs = outputs_new.ToArray()
-            });
+            tx.Inputs = coins.Values.SelectMany(p => p.Unspents).Select(p => p.Input).ToArray();
+            tx.Outputs = outputs_new.ToArray();
+            return tx;
         }
 
         protected abstract void OnProcessNewBlock(IEnumerable<TransactionInput> spent, IEnumerable<UnspentCoin> unspent);
diff --git a/AntSharesUI/AntSharesUI.csproj b/AntSharesUI/AntSharesUI.csproj
index 1466adc854..246bc7e958 100644
--- a/AntSharesUI/AntSharesUI.csproj
+++ b/AntSharesUI/AntSharesUI.csproj
@@ -57,6 +57,9 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Cryptography\X509\CertificateQueryResult.cs" />
+    <Compile Include="Cryptography\X509\CertificateQueryResultType.cs" />
+    <Compile Include="Cryptography\X509\CertificateQueryService.cs" />
     <Compile Include="UI\AddContractDialog.cs">
       <SubType>Form</SubType>
     </Compile>
diff --git a/AntSharesUI/App.config b/AntSharesUI/App.config
index 8c52bd16c6..860ec20064 100644
--- a/AntSharesUI/App.config
+++ b/AntSharesUI/App.config
@@ -16,6 +16,9 @@
       <setting name="NodePort" serializeAs="String">
         <value>20333</value>
       </setting>
+      <setting name="CertCachePath" serializeAs="String">
+        <value>.\Certs</value>
+      </setting>
     </AntShares.Properties.Settings>
   </applicationSettings>
   <runtime>
diff --git a/AntSharesUI/Cryptography/X509/CertificateQueryResult.cs b/AntSharesUI/Cryptography/X509/CertificateQueryResult.cs
new file mode 100644
index 0000000000..326d9cb3d5
--- /dev/null
+++ b/AntSharesUI/Cryptography/X509/CertificateQueryResult.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Security.Cryptography.X509Certificates;
+
+namespace AntShares.Cryptography.X509
+{
+    internal class CertificateQueryResult : IDisposable
+    {
+        public CertificateQueryResultType Type;
+        public X509Certificate2 Certificate;
+
+        public void Dispose()
+        {
+            if (Certificate != null)
+            {
+                Certificate.Dispose();
+            }
+        }
+    }
+}
diff --git a/AntSharesUI/Cryptography/X509/CertificateQueryResultType.cs b/AntSharesUI/Cryptography/X509/CertificateQueryResultType.cs
new file mode 100644
index 0000000000..fbae8ca210
--- /dev/null
+++ b/AntSharesUI/Cryptography/X509/CertificateQueryResultType.cs
@@ -0,0 +1,13 @@
+namespace AntShares.Cryptography.X509
+{
+    internal enum CertificateQueryResultType
+    {
+        Querying,
+        QueryFailed,
+        System,
+        Missing,
+        Invalid,
+        Expired,
+        Good
+    }
+}
diff --git a/AntSharesUI/Cryptography/X509/CertificateQueryService.cs b/AntSharesUI/Cryptography/X509/CertificateQueryService.cs
new file mode 100644
index 0000000000..3af164b8dc
--- /dev/null
+++ b/AntSharesUI/Cryptography/X509/CertificateQueryService.cs
@@ -0,0 +1,41 @@
+using AntShares.Core;
+using AntShares.Cryptography.ECC;
+using AntShares.Properties;
+using System.IO;
+using System.Security.Cryptography;
+using System.Security.Cryptography.X509Certificates;
+
+namespace AntShares.Cryptography.X509
+{
+    internal static class CertificateQueryService
+    {
+        public static CertificateQueryResult Query(ECPoint pubkey)
+        {
+            if (pubkey.Equals(Blockchain.AntShare.Issuer) || pubkey.Equals(Blockchain.AntCoin.Issuer))
+                return new CertificateQueryResult { Type = CertificateQueryResultType.System };
+            Directory.CreateDirectory(Settings.Default.CertCachePath);
+            string path = Path.Combine(Settings.Default.CertCachePath, $"{pubkey}.cer");
+            if (!File.Exists(path))
+            {
+                //TODO: 本地缓存中找不到证书的情况下，去公共服务器上查询
+            }
+            if (!File.Exists(path))
+                return new CertificateQueryResult { Type = CertificateQueryResultType.Missing };
+            X509Certificate2 cert;
+            try
+            {
+                cert = new X509Certificate2(path);
+            }
+            catch (CryptographicException)
+            {
+                return new CertificateQueryResult { Type = CertificateQueryResultType.Missing };
+            }
+            //TODO: 取到证书后，验证证书是否合法等
+            return new CertificateQueryResult
+            {
+                Certificate = cert,
+                Type = CertificateQueryResultType.Good
+            };
+        }
+    }
+}
diff --git a/AntSharesUI/Properties/Settings.Designer.cs b/AntSharesUI/Properties/Settings.Designer.cs
index 5ace42f59e..4c77bf645d 100644
--- a/AntSharesUI/Properties/Settings.Designer.cs
+++ b/AntSharesUI/Properties/Settings.Designer.cs
@@ -40,5 +40,14 @@ public ushort NodePort {
                 return ((ushort)(this["NodePort"]));
             }
         }
+        
+        [global::System.Configuration.ApplicationScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute(".\\Certs")]
+        public string CertCachePath {
+            get {
+                return ((string)(this["CertCachePath"]));
+            }
+        }
     }
 }
diff --git a/AntSharesUI/Properties/Settings.settings b/AntSharesUI/Properties/Settings.settings
index 00ef66d583..77e4dcd485 100644
--- a/AntSharesUI/Properties/Settings.settings
+++ b/AntSharesUI/Properties/Settings.settings
@@ -8,5 +8,8 @@
     <Setting Name="NodePort" Type="System.UInt16" Scope="Application">
       <Value Profile="(Default)">20333</Value>
     </Setting>
+    <Setting Name="CertCachePath" Type="System.String" Scope="Application">
+      <Value Profile="(Default)">.\Certs</Value>
+    </Setting>
   </Settings>
 </SettingsFile>
\ No newline at end of file
diff --git a/AntSharesUI/UI/AssetRegisterDialog.Designer.cs b/AntSharesUI/UI/AssetRegisterDialog.Designer.cs
index 266d9d1368..46377f99be 100644
--- a/AntSharesUI/UI/AssetRegisterDialog.Designer.cs
+++ b/AntSharesUI/UI/AssetRegisterDialog.Designer.cs
@@ -28,13 +28,158 @@ protected override void Dispose(bool disposing)
         /// </summary>
         private void InitializeComponent()
         {
+            this.label1 = new System.Windows.Forms.Label();
+            this.comboBox1 = new System.Windows.Forms.ComboBox();
+            this.label2 = new System.Windows.Forms.Label();
+            this.textBox1 = new System.Windows.Forms.TextBox();
+            this.label3 = new System.Windows.Forms.Label();
+            this.checkBox1 = new System.Windows.Forms.CheckBox();
+            this.textBox2 = new System.Windows.Forms.TextBox();
+            this.label4 = new System.Windows.Forms.Label();
+            this.comboBox2 = new System.Windows.Forms.ComboBox();
+            this.label5 = new System.Windows.Forms.Label();
+            this.comboBox3 = new System.Windows.Forms.ComboBox();
+            this.button1 = new System.Windows.Forms.Button();
             this.SuspendLayout();
             // 
+            // label1
+            // 
+            this.label1.AutoSize = true;
+            this.label1.Location = new System.Drawing.Point(12, 15);
+            this.label1.Name = "label1";
+            this.label1.Size = new System.Drawing.Size(59, 12);
+            this.label1.TabIndex = 0;
+            this.label1.Text = "资产种类:";
+            // 
+            // comboBox1
+            // 
+            this.comboBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBox1.FormattingEnabled = true;
+            this.comboBox1.Location = new System.Drawing.Point(77, 12);
+            this.comboBox1.Name = "comboBox1";
+            this.comboBox1.Size = new System.Drawing.Size(312, 20);
+            this.comboBox1.TabIndex = 1;
+            this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);
+            // 
+            // label2
+            // 
+            this.label2.AutoSize = true;
+            this.label2.Location = new System.Drawing.Point(36, 41);
+            this.label2.Name = "label2";
+            this.label2.Size = new System.Drawing.Size(35, 12);
+            this.label2.TabIndex = 2;
+            this.label2.Text = "名称:";
+            // 
+            // textBox1
+            // 
+            this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.textBox1.Enabled = false;
+            this.textBox1.Location = new System.Drawing.Point(77, 38);
+            this.textBox1.Name = "textBox1";
+            this.textBox1.Size = new System.Drawing.Size(312, 21);
+            this.textBox1.TabIndex = 3;
+            // 
+            // label3
+            // 
+            this.label3.AutoSize = true;
+            this.label3.Location = new System.Drawing.Point(12, 68);
+            this.label3.Name = "label3";
+            this.label3.Size = new System.Drawing.Size(59, 12);
+            this.label3.TabIndex = 4;
+            this.label3.Text = "总量限制:";
+            // 
+            // checkBox1
+            // 
+            this.checkBox1.AutoSize = true;
+            this.checkBox1.Enabled = false;
+            this.checkBox1.Location = new System.Drawing.Point(77, 68);
+            this.checkBox1.Name = "checkBox1";
+            this.checkBox1.Size = new System.Drawing.Size(15, 14);
+            this.checkBox1.TabIndex = 5;
+            this.checkBox1.UseVisualStyleBackColor = true;
+            this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
+            // 
+            // textBox2
+            // 
+            this.textBox2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.textBox2.Enabled = false;
+            this.textBox2.Location = new System.Drawing.Point(98, 65);
+            this.textBox2.Name = "textBox2";
+            this.textBox2.Size = new System.Drawing.Size(291, 21);
+            this.textBox2.TabIndex = 6;
+            // 
+            // label4
+            // 
+            this.label4.AutoSize = true;
+            this.label4.Location = new System.Drawing.Point(24, 95);
+            this.label4.Name = "label4";
+            this.label4.Size = new System.Drawing.Size(47, 12);
+            this.label4.TabIndex = 7;
+            this.label4.Text = "发行者:";
+            // 
+            // comboBox2
+            // 
+            this.comboBox2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.comboBox2.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBox2.FormattingEnabled = true;
+            this.comboBox2.Location = new System.Drawing.Point(77, 92);
+            this.comboBox2.Name = "comboBox2";
+            this.comboBox2.Size = new System.Drawing.Size(312, 20);
+            this.comboBox2.TabIndex = 8;
+            // 
+            // label5
+            // 
+            this.label5.AutoSize = true;
+            this.label5.Location = new System.Drawing.Point(24, 121);
+            this.label5.Name = "label5";
+            this.label5.Size = new System.Drawing.Size(47, 12);
+            this.label5.TabIndex = 9;
+            this.label5.Text = "管理员:";
+            // 
+            // comboBox3
+            // 
+            this.comboBox3.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.comboBox3.FormattingEnabled = true;
+            this.comboBox3.Location = new System.Drawing.Point(77, 118);
+            this.comboBox3.Name = "comboBox3";
+            this.comboBox3.Size = new System.Drawing.Size(312, 20);
+            this.comboBox3.TabIndex = 10;
+            // 
+            // button1
+            // 
+            this.button1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+            this.button1.DialogResult = System.Windows.Forms.DialogResult.OK;
+            this.button1.Location = new System.Drawing.Point(314, 159);
+            this.button1.Name = "button1";
+            this.button1.Size = new System.Drawing.Size(75, 23);
+            this.button1.TabIndex = 11;
+            this.button1.Text = "确定";
+            this.button1.UseVisualStyleBackColor = true;
+            // 
             // AssetRegisterDialog
             // 
+            this.AcceptButton = this.button1;
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(451, 509);
+            this.ClientSize = new System.Drawing.Size(401, 194);
+            this.Controls.Add(this.button1);
+            this.Controls.Add(this.comboBox3);
+            this.Controls.Add(this.label5);
+            this.Controls.Add(this.comboBox2);
+            this.Controls.Add(this.label4);
+            this.Controls.Add(this.textBox2);
+            this.Controls.Add(this.checkBox1);
+            this.Controls.Add(this.label3);
+            this.Controls.Add(this.textBox1);
+            this.Controls.Add(this.label2);
+            this.Controls.Add(this.comboBox1);
+            this.Controls.Add(this.label1);
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
             this.MaximizeBox = false;
             this.MinimizeBox = false;
@@ -42,10 +187,25 @@ private void InitializeComponent()
             this.ShowInTaskbar = false;
             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
             this.Text = "注册资产";
+            this.Load += new System.EventHandler(this.AssetRegisterDialog_Load);
             this.ResumeLayout(false);
+            this.PerformLayout();
 
         }
 
         #endregion
+
+        private System.Windows.Forms.Label label1;
+        private System.Windows.Forms.ComboBox comboBox1;
+        private System.Windows.Forms.Label label2;
+        private System.Windows.Forms.TextBox textBox1;
+        private System.Windows.Forms.Label label3;
+        private System.Windows.Forms.CheckBox checkBox1;
+        private System.Windows.Forms.TextBox textBox2;
+        private System.Windows.Forms.Label label4;
+        private System.Windows.Forms.ComboBox comboBox2;
+        private System.Windows.Forms.Label label5;
+        private System.Windows.Forms.ComboBox comboBox3;
+        private System.Windows.Forms.Button button1;
     }
 }
\ No newline at end of file
diff --git a/AntSharesUI/UI/AssetRegisterDialog.cs b/AntSharesUI/UI/AssetRegisterDialog.cs
index 8362a7dc7c..628a368f21 100644
--- a/AntSharesUI/UI/AssetRegisterDialog.cs
+++ b/AntSharesUI/UI/AssetRegisterDialog.cs
@@ -1,11 +1,8 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
+using AntShares.Core;
+using AntShares.Cryptography.ECC;
+using AntShares.Wallets;
+using System;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace AntShares.UI
@@ -16,5 +13,37 @@ public AssetRegisterDialog()
         {
             InitializeComponent();
         }
+
+        public RegisterTransaction GetTransaction()
+        {
+            RegisterTransaction tx = Program.CurrentWallet.MakeTransaction<RegisterTransaction>(new TransactionOutput[0], Fixed8.Zero);
+            if (tx == null) return null;
+            tx.AssetType = (AssetType)comboBox1.SelectedItem;
+            tx.Name = tx.AssetType == AssetType.Share ? string.Empty : $"[{{'lang':'zh-CN','name':'{textBox1.Text}'}}]";
+            tx.Amount = checkBox1.Checked ? Fixed8.Parse(textBox2.Text) : -Fixed8.Satoshi;
+            tx.Issuer = (ECPoint)comboBox2.SelectedItem;
+            tx.Admin = Wallet.ToScriptHash(comboBox3.Text);
+            return tx;
+        }
+
+        private void AssetRegisterDialog_Load(object sender, EventArgs e)
+        {
+            comboBox1.Items.AddRange(Enum.GetValues(typeof(AssetType)).OfType<AssetType>().Where(p => p >= AssetType.Share).OfType<object>().ToArray());
+            comboBox2.Items.AddRange(Program.CurrentWallet.GetAccounts().Select(p => p.PublicKey).ToArray());
+            comboBox3.Items.AddRange(Program.CurrentWallet.GetContracts().ToArray());
+        }
+
+        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            textBox1.Enabled = (AssetType)comboBox1.SelectedItem != AssetType.Share;
+            checkBox1.Enabled = (AssetType)comboBox1.SelectedItem == AssetType.Token;
+            if ((AssetType)comboBox1.SelectedItem == AssetType.Share) checkBox1.Checked = true;
+            else if ((AssetType)comboBox1.SelectedItem == AssetType.Currency) checkBox1.Checked = false;
+        }
+
+        private void checkBox1_CheckedChanged(object sender, EventArgs e)
+        {
+            textBox2.Enabled = checkBox1.Checked;
+        }
     }
 }
diff --git a/AntSharesUI/UI/DeveloperToolsForm.cs b/AntSharesUI/UI/DeveloperToolsForm.cs
index e7ec19a879..11df48f9b6 100644
--- a/AntSharesUI/UI/DeveloperToolsForm.cs
+++ b/AntSharesUI/UI/DeveloperToolsForm.cs
@@ -74,6 +74,7 @@ private void button1_Click(object sender, EventArgs e)
                 Amount = Fixed8.FromDecimal(numericUpDown1.Value),
                 Issuer = ECPoint.Parse(textBox1.Text, ECCurve.Secp256r1),
                 Admin = Wallet.ToScriptHash(textBox2.Text),
+                Attributes = new TransactionAttribute[0],
                 Inputs = new TransactionInput[0],
                 Outputs = new TransactionOutput[0]
             };
@@ -95,6 +96,7 @@ private void button2_Click(object sender, EventArgs e)
                     new GenerationTransaction
                     {
                         Nonce = 0,
+                        Attributes = new TransactionAttribute[0],
                         Inputs = new TransactionInput[0],
                         Outputs = new TransactionOutput[0],
                         Scripts = new Script[0]
@@ -115,6 +117,7 @@ private void button3_Click(object sender, EventArgs e)
                 new GenerationTransaction
                 {
                     Nonce = 0,
+                    Attributes = new TransactionAttribute[0],
                     Inputs = new TransactionInput[0],
                     Outputs = new TransactionOutput[0],
                     Scripts = new Script[0]
diff --git a/AntSharesUI/UI/IssueDialog.cs b/AntSharesUI/UI/IssueDialog.cs
index f65cee4108..a5dee44d6c 100644
--- a/AntSharesUI/UI/IssueDialog.cs
+++ b/AntSharesUI/UI/IssueDialog.cs
@@ -13,31 +13,21 @@ public IssueDialog()
             InitializeComponent();
         }
 
-        public SignatureContext GetTransaction()
+        public IssueTransaction GetTransaction()
         {
             RegisterTransaction tx = comboBox1.SelectedItem as RegisterTransaction;
             if (tx == null) return null;
-            return new SignatureContext(new IssueTransaction
+            return Program.CurrentWallet.MakeTransaction<IssueTransaction>(listBox1.Items.OfType<TxOutListBoxItem>().GroupBy(p => p.Account).Select(g => new TransactionOutput
             {
-                Inputs = new TransactionInput[0],
-                Outputs = listBox1.Items.OfType<TxOutListBoxItem>().GroupBy(p => p.Account).Select(g => new TransactionOutput
-                {
-                    AssetId = tx.Hash,
-                    Value = g.Sum(p => p.Amount),
-                    ScriptHash = g.Key
-                }).ToArray()
-            });
+                AssetId = tx.Hash,
+                Value = g.Sum(p => p.Amount),
+                ScriptHash = g.Key
+            }).ToArray(), Fixed8.Zero);
         }
 
         private void IssueDialog_Load(object sender, EventArgs e)
         {
-            foreach (RegisterTransaction tx in Blockchain.Default.GetAssets())
-            {
-                if (Program.CurrentWallet.ContainsAddress(tx.Admin))
-                {
-                    comboBox1.Items.Add(tx);
-                }
-            }
+            comboBox1.Items.AddRange(Blockchain.Default.GetAssets().Where(p => Program.CurrentWallet.ContainsAddress(p.Admin)).ToArray());
         }
 
         private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
@@ -57,7 +47,7 @@ private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
             {
                 textBox1.Text = tx.Issuer.ToString();
                 textBox2.Text = Wallet.ToAddress(tx.Admin);
-                textBox3.Text = tx.Amount.ToString();
+                textBox3.Text = tx.Amount == -Fixed8.Satoshi ? "+\u221e" : tx.Amount.ToString();
                 textBox4.Text = Blockchain.Default.GetQuantityIssued(tx.Hash).ToString();
                 groupBox3.Enabled = true;
             }
diff --git a/AntSharesUI/UI/MainForm.Designer.cs b/AntSharesUI/UI/MainForm.Designer.cs
index f74e2c906f..9bda947578 100644
--- a/AntSharesUI/UI/MainForm.Designer.cs
+++ b/AntSharesUI/UI/MainForm.Designer.cs
@@ -29,6 +29,8 @@ protected override void Dispose(bool disposing)
         private void InitializeComponent()
         {
             this.components = new System.ComponentModel.Container();
+            System.Windows.Forms.ListViewGroup listViewGroup1 = new System.Windows.Forms.ListViewGroup("unchecked", System.Windows.Forms.HorizontalAlignment.Left);
+            System.Windows.Forms.ListViewGroup listViewGroup2 = new System.Windows.Forms.ListViewGroup("checked", System.Windows.Forms.HorizontalAlignment.Left);
             this.menuStrip1 = new System.Windows.Forms.MenuStrip();
             this.钱包WToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             this.创建钱包数据库NToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
@@ -53,9 +55,12 @@ private void InitializeComponent()
             this.关于AntSharesToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             this.ContractListView = new System.Windows.Forms.ListView();
             this.columnHeader1 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
+            this.columnHeader4 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
             this.contextMenuStrip1 = new System.Windows.Forms.ContextMenuStrip(this.components);
             this.创建新地址NToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             this.导入私钥IToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.创建智能合约SToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.多方签名MToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             this.toolStripSeparator6 = new System.Windows.Forms.ToolStripSeparator();
             this.查看私钥VToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             this.复制到剪贴板CToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
@@ -71,10 +76,9 @@ private void InitializeComponent()
             this.tabPage2 = new System.Windows.Forms.TabPage();
             this.listView2 = new System.Windows.Forms.ListView();
             this.columnHeader2 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
+            this.columnHeader6 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
             this.columnHeader3 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
-            this.创建智能合约SToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
-            this.多方签名MToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
-            this.columnHeader4 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
+            this.columnHeader5 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
             this.menuStrip1.SuspendLayout();
             this.contextMenuStrip1.SuspendLayout();
             this.statusStrip1.SuspendLayout();
@@ -93,7 +97,7 @@ private void InitializeComponent()
             this.menuStrip1.Location = new System.Drawing.Point(0, 0);
             this.menuStrip1.Name = "menuStrip1";
             this.menuStrip1.Padding = new System.Windows.Forms.Padding(7, 3, 0, 3);
-            this.menuStrip1.Size = new System.Drawing.Size(616, 27);
+            this.menuStrip1.Size = new System.Drawing.Size(756, 27);
             this.menuStrip1.TabIndex = 0;
             this.menuStrip1.Text = "menuStrip1";
             // 
@@ -163,19 +167,19 @@ private void InitializeComponent()
             // 转账TToolStripMenuItem
             // 
             this.转账TToolStripMenuItem.Name = "转账TToolStripMenuItem";
-            this.转账TToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
+            this.转账TToolStripMenuItem.Size = new System.Drawing.Size(124, 22);
             this.转账TToolStripMenuItem.Text = "转账(&T)...";
             this.转账TToolStripMenuItem.Click += new System.EventHandler(this.转账TToolStripMenuItem_Click);
             // 
             // toolStripSeparator5
             // 
             this.toolStripSeparator5.Name = "toolStripSeparator5";
-            this.toolStripSeparator5.Size = new System.Drawing.Size(149, 6);
+            this.toolStripSeparator5.Size = new System.Drawing.Size(121, 6);
             // 
             // 签名SToolStripMenuItem
             // 
             this.签名SToolStripMenuItem.Name = "签名SToolStripMenuItem";
-            this.签名SToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
+            this.签名SToolStripMenuItem.Size = new System.Drawing.Size(124, 22);
             this.签名SToolStripMenuItem.Text = "签名(&S)...";
             this.签名SToolStripMenuItem.Click += new System.EventHandler(this.签名SToolStripMenuItem_Click);
             // 
@@ -192,14 +196,14 @@ private void InitializeComponent()
             // 注册资产RToolStripMenuItem
             // 
             this.注册资产RToolStripMenuItem.Name = "注册资产RToolStripMenuItem";
-            this.注册资产RToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
+            this.注册资产RToolStripMenuItem.Size = new System.Drawing.Size(149, 22);
             this.注册资产RToolStripMenuItem.Text = "注册资产(&R)...";
             this.注册资产RToolStripMenuItem.Click += new System.EventHandler(this.注册资产RToolStripMenuItem_Click);
             // 
             // 资产分发IToolStripMenuItem
             // 
             this.资产分发IToolStripMenuItem.Name = "资产分发IToolStripMenuItem";
-            this.资产分发IToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
+            this.资产分发IToolStripMenuItem.Size = new System.Drawing.Size(149, 22);
             this.资产分发IToolStripMenuItem.Text = "发行资产(&I)...";
             this.资产分发IToolStripMenuItem.Click += new System.EventHandler(this.资产分发IToolStripMenuItem_Click);
             // 
@@ -267,7 +271,7 @@ private void InitializeComponent()
             this.ContractListView.HideSelection = false;
             this.ContractListView.Location = new System.Drawing.Point(3, 3);
             this.ContractListView.Name = "ContractListView";
-            this.ContractListView.Size = new System.Drawing.Size(602, 335);
+            this.ContractListView.Size = new System.Drawing.Size(793, 511);
             this.ContractListView.TabIndex = 1;
             this.ContractListView.UseCompatibleStateImageBehavior = false;
             this.ContractListView.View = System.Windows.Forms.View.Details;
@@ -277,6 +281,11 @@ private void InitializeComponent()
             this.columnHeader1.Text = "地址";
             this.columnHeader1.Width = 300;
             // 
+            // columnHeader4
+            // 
+            this.columnHeader4.Text = "类型";
+            this.columnHeader4.Width = 270;
+            // 
             // contextMenuStrip1
             // 
             this.contextMenuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
@@ -295,7 +304,7 @@ private void InitializeComponent()
             // 
             this.创建新地址NToolStripMenuItem.Enabled = false;
             this.创建新地址NToolStripMenuItem.Name = "创建新地址NToolStripMenuItem";
-            this.创建新地址NToolStripMenuItem.Size = new System.Drawing.Size(156, 22);
+            this.创建新地址NToolStripMenuItem.Size = new System.Drawing.Size(163, 22);
             this.创建新地址NToolStripMenuItem.Text = "创建新地址(&N)";
             this.创建新地址NToolStripMenuItem.Click += new System.EventHandler(this.创建新地址NToolStripMenuItem_Click);
             // 
@@ -303,20 +312,36 @@ private void InitializeComponent()
             // 
             this.导入私钥IToolStripMenuItem.Enabled = false;
             this.导入私钥IToolStripMenuItem.Name = "导入私钥IToolStripMenuItem";
-            this.导入私钥IToolStripMenuItem.Size = new System.Drawing.Size(156, 22);
+            this.导入私钥IToolStripMenuItem.Size = new System.Drawing.Size(163, 22);
             this.导入私钥IToolStripMenuItem.Text = "导入私钥(&I)...";
             this.导入私钥IToolStripMenuItem.Click += new System.EventHandler(this.导入私钥IToolStripMenuItem_Click);
             // 
+            // 创建智能合约SToolStripMenuItem
+            // 
+            this.创建智能合约SToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.多方签名MToolStripMenuItem});
+            this.创建智能合约SToolStripMenuItem.Enabled = false;
+            this.创建智能合约SToolStripMenuItem.Name = "创建智能合约SToolStripMenuItem";
+            this.创建智能合约SToolStripMenuItem.Size = new System.Drawing.Size(163, 22);
+            this.创建智能合约SToolStripMenuItem.Text = "创建智能合约(&S)";
+            // 
+            // 多方签名MToolStripMenuItem
+            // 
+            this.多方签名MToolStripMenuItem.Name = "多方签名MToolStripMenuItem";
+            this.多方签名MToolStripMenuItem.Size = new System.Drawing.Size(153, 22);
+            this.多方签名MToolStripMenuItem.Text = "多方签名(&M)...";
+            this.多方签名MToolStripMenuItem.Click += new System.EventHandler(this.多方签名MToolStripMenuItem_Click);
+            // 
             // toolStripSeparator6
             // 
             this.toolStripSeparator6.Name = "toolStripSeparator6";
-            this.toolStripSeparator6.Size = new System.Drawing.Size(153, 6);
+            this.toolStripSeparator6.Size = new System.Drawing.Size(160, 6);
             // 
             // 查看私钥VToolStripMenuItem
             // 
             this.查看私钥VToolStripMenuItem.Enabled = false;
             this.查看私钥VToolStripMenuItem.Name = "查看私钥VToolStripMenuItem";
-            this.查看私钥VToolStripMenuItem.Size = new System.Drawing.Size(156, 22);
+            this.查看私钥VToolStripMenuItem.Size = new System.Drawing.Size(163, 22);
             this.查看私钥VToolStripMenuItem.Text = "查看私钥(&V)";
             this.查看私钥VToolStripMenuItem.Click += new System.EventHandler(this.查看私钥VToolStripMenuItem_Click);
             // 
@@ -326,7 +351,7 @@ private void InitializeComponent()
             this.复制到剪贴板CToolStripMenuItem.Name = "复制到剪贴板CToolStripMenuItem";
             this.复制到剪贴板CToolStripMenuItem.ShortcutKeys = ((System.Windows.Forms.Keys)((System.Windows.Forms.Keys.Control | System.Windows.Forms.Keys.C)));
             this.复制到剪贴板CToolStripMenuItem.ShowShortcutKeys = false;
-            this.复制到剪贴板CToolStripMenuItem.Size = new System.Drawing.Size(156, 22);
+            this.复制到剪贴板CToolStripMenuItem.Size = new System.Drawing.Size(163, 22);
             this.复制到剪贴板CToolStripMenuItem.Text = "复制到剪贴板(&C)";
             this.复制到剪贴板CToolStripMenuItem.Click += new System.EventHandler(this.复制到剪贴板CToolStripMenuItem_Click);
             // 
@@ -334,7 +359,7 @@ private void InitializeComponent()
             // 
             this.删除DToolStripMenuItem.Enabled = false;
             this.删除DToolStripMenuItem.Name = "删除DToolStripMenuItem";
-            this.删除DToolStripMenuItem.Size = new System.Drawing.Size(156, 22);
+            this.删除DToolStripMenuItem.Size = new System.Drawing.Size(163, 22);
             this.删除DToolStripMenuItem.Text = "删除(&D)...";
             this.删除DToolStripMenuItem.Click += new System.EventHandler(this.删除DToolStripMenuItem_Click);
             // 
@@ -345,9 +370,9 @@ private void InitializeComponent()
             this.lbl_height,
             this.toolStripStatusLabel4,
             this.lbl_count_node});
-            this.statusStrip1.Location = new System.Drawing.Point(0, 398);
+            this.statusStrip1.Location = new System.Drawing.Point(0, 520);
             this.statusStrip1.Name = "statusStrip1";
-            this.statusStrip1.Size = new System.Drawing.Size(616, 22);
+            this.statusStrip1.Size = new System.Drawing.Size(756, 22);
             this.statusStrip1.SizingGrip = false;
             this.statusStrip1.TabIndex = 2;
             this.statusStrip1.Text = "statusStrip1";
@@ -379,7 +404,7 @@ private void InitializeComponent()
             // timer1
             // 
             this.timer1.Enabled = true;
-            this.timer1.Interval = 1000;
+            this.timer1.Interval = 500;
             this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
             // 
             // tabControl1
@@ -390,7 +415,7 @@ private void InitializeComponent()
             this.tabControl1.Location = new System.Drawing.Point(0, 27);
             this.tabControl1.Name = "tabControl1";
             this.tabControl1.SelectedIndex = 0;
-            this.tabControl1.Size = new System.Drawing.Size(616, 371);
+            this.tabControl1.Size = new System.Drawing.Size(756, 493);
             this.tabControl1.TabIndex = 3;
             // 
             // tabPage1
@@ -399,7 +424,7 @@ private void InitializeComponent()
             this.tabPage1.Location = new System.Drawing.Point(4, 26);
             this.tabPage1.Name = "tabPage1";
             this.tabPage1.Padding = new System.Windows.Forms.Padding(3);
-            this.tabPage1.Size = new System.Drawing.Size(608, 341);
+            this.tabPage1.Size = new System.Drawing.Size(799, 517);
             this.tabPage1.TabIndex = 0;
             this.tabPage1.Text = "账户";
             this.tabPage1.UseVisualStyleBackColor = true;
@@ -410,7 +435,7 @@ private void InitializeComponent()
             this.tabPage2.Location = new System.Drawing.Point(4, 26);
             this.tabPage2.Name = "tabPage2";
             this.tabPage2.Padding = new System.Windows.Forms.Padding(3);
-            this.tabPage2.Size = new System.Drawing.Size(608, 341);
+            this.tabPage2.Size = new System.Drawing.Size(748, 463);
             this.tabPage2.TabIndex = 1;
             this.tabPage2.Text = "资产";
             this.tabPage2.UseVisualStyleBackColor = true;
@@ -419,15 +444,25 @@ private void InitializeComponent()
             // 
             this.listView2.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
             this.columnHeader2,
-            this.columnHeader3});
+            this.columnHeader6,
+            this.columnHeader3,
+            this.columnHeader5});
             this.listView2.Dock = System.Windows.Forms.DockStyle.Fill;
             this.listView2.FullRowSelect = true;
             this.listView2.GridLines = true;
+            listViewGroup1.Header = "unchecked";
+            listViewGroup1.Name = "unchecked";
+            listViewGroup2.Header = "checked";
+            listViewGroup2.Name = "checked";
+            this.listView2.Groups.AddRange(new System.Windows.Forms.ListViewGroup[] {
+            listViewGroup1,
+            listViewGroup2});
             this.listView2.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
             this.listView2.HideSelection = false;
             this.listView2.Location = new System.Drawing.Point(3, 3);
             this.listView2.Name = "listView2";
-            this.listView2.Size = new System.Drawing.Size(602, 335);
+            this.listView2.ShowGroups = false;
+            this.listView2.Size = new System.Drawing.Size(742, 457);
             this.listView2.TabIndex = 2;
             this.listView2.UseCompatibleStateImageBehavior = false;
             this.listView2.View = System.Windows.Forms.View.Details;
@@ -435,39 +470,28 @@ private void InitializeComponent()
             // columnHeader2
             // 
             this.columnHeader2.Text = "资产";
-            this.columnHeader2.Width = 300;
+            this.columnHeader2.Width = 160;
+            // 
+            // columnHeader6
+            // 
+            this.columnHeader6.Text = "类型";
+            this.columnHeader6.Width = 100;
             // 
             // columnHeader3
             // 
             this.columnHeader3.Text = "余额";
             this.columnHeader3.Width = 150;
             // 
-            // 创建智能合约SToolStripMenuItem
-            // 
-            this.创建智能合约SToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
-            this.多方签名MToolStripMenuItem});
-            this.创建智能合约SToolStripMenuItem.Enabled = false;
-            this.创建智能合约SToolStripMenuItem.Name = "创建智能合约SToolStripMenuItem";
-            this.创建智能合约SToolStripMenuItem.Size = new System.Drawing.Size(163, 22);
-            this.创建智能合约SToolStripMenuItem.Text = "创建智能合约(&S)";
-            // 
-            // 多方签名MToolStripMenuItem
-            // 
-            this.多方签名MToolStripMenuItem.Name = "多方签名MToolStripMenuItem";
-            this.多方签名MToolStripMenuItem.Size = new System.Drawing.Size(153, 22);
-            this.多方签名MToolStripMenuItem.Text = "多方签名(&M)...";
-            this.多方签名MToolStripMenuItem.Click += new System.EventHandler(this.多方签名MToolStripMenuItem_Click);
-            // 
-            // columnHeader4
+            // columnHeader5
             // 
-            this.columnHeader4.Text = "类型";
-            this.columnHeader4.Width = 270;
+            this.columnHeader5.Text = "发行者";
+            this.columnHeader5.Width = 296;
             // 
             // MainForm
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 17F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(616, 420);
+            this.ClientSize = new System.Drawing.Size(756, 542);
             this.Controls.Add(this.tabControl1);
             this.Controls.Add(this.statusStrip1);
             this.Controls.Add(this.menuStrip1);
@@ -540,6 +564,8 @@ private void InitializeComponent()
         private System.Windows.Forms.ToolStripMenuItem 多方签名MToolStripMenuItem;
         private System.Windows.Forms.ColumnHeader columnHeader4;
         private System.Windows.Forms.ListView ContractListView;
+        private System.Windows.Forms.ColumnHeader columnHeader5;
+        private System.Windows.Forms.ColumnHeader columnHeader6;
     }
 }
 
diff --git a/AntSharesUI/UI/MainForm.cs b/AntSharesUI/UI/MainForm.cs
index 61d1d1fad5..4eef036adc 100644
--- a/AntSharesUI/UI/MainForm.cs
+++ b/AntSharesUI/UI/MainForm.cs
@@ -1,11 +1,14 @@
 using AntShares.Core;
+using AntShares.Cryptography.X509;
 using AntShares.Implementations.Wallets.EntityFramework;
 using AntShares.IO;
 using AntShares.Properties;
 using AntShares.Wallets;
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics;
+using System.Drawing;
 using System.Linq;
 using System.Reflection;
 using System.Security.Cryptography;
@@ -16,6 +19,8 @@ namespace AntShares.UI
 {
     internal partial class MainForm : Form
     {
+        private bool balance_changed = false;
+
         public MainForm()
         {
             InitializeComponent();
@@ -55,33 +60,12 @@ private void ChangeWallet(UserWallet wallet)
                     AddContractToListView(contract);
                 }
             }
-            OnBalanceChanged();
+            balance_changed = true;
         }
 
         private void CurrentWallet_BalanceChanged(object sender, EventArgs e)
         {
-            if (InvokeRequired)
-            {
-                BeginInvoke(new Action(OnBalanceChanged));
-            }
-            else
-            {
-                OnBalanceChanged();
-            }
-        }
-
-        private void OnBalanceChanged()
-        {
-            listView2.Items.Clear();
-            if (Program.CurrentWallet != null)
-            {
-                listView2.Items.AddRange(Program.CurrentWallet.FindUnspentCoins().GroupBy(p => p.AssetId, (k, g) => new
-                {
-                    AssetId = k,
-                    AssetName = ((RegisterTransaction)Blockchain.Default.GetTransaction(k)).GetName(),
-                    Value = g.Sum(p => p.Value)
-                }).Select(p => new ListViewItem(new[] { p.AssetName, p.Value.ToString() }) { Name = p.AssetId.ToString() }).ToArray());
-            }
+            balance_changed = true;
         }
 
         private async Task ShowInformationAsync(SignatureContext context)
@@ -113,6 +97,102 @@ private void timer1_Tick(object sender, EventArgs e)
         {
             lbl_height.Text = $"{Blockchain.Default.Height}/{Blockchain.Default.HeaderHeight}";
             lbl_count_node.Text = Program.LocalNode.RemoteNodeCount.ToString();
+            if (balance_changed)
+            {
+                IEnumerable<UnspentCoin> coins = Program.CurrentWallet == null ? Enumerable.Empty<UnspentCoin>() : Program.CurrentWallet.FindUnspentCoins();
+                var assets = coins.GroupBy(p => p.AssetId, (k, g) => new
+                {
+                    Asset = (RegisterTransaction)Blockchain.Default.GetTransaction(k),
+                    Value = g.Sum(p => p.Value)
+                }).ToDictionary(p => p.Asset.Hash);
+                foreach (RegisterTransaction tx in listView2.Items.OfType<ListViewItem>().Select(p => (RegisterTransaction)p.Tag).ToArray())
+                {
+                    if (!assets.ContainsKey(tx.Hash))
+                    {
+                        listView2.Items.RemoveByKey(tx.Hash.ToString());
+                    }
+                }
+                foreach (var asset in assets.Values)
+                {
+                    if (listView2.Items.ContainsKey(asset.Asset.Hash.ToString()))
+                    {
+                        listView2.Items[asset.Asset.Hash.ToString()].SubItems["value"].Text = asset.Value.ToString();
+                    }
+                    else
+                    {
+                        listView2.Items.Add(new ListViewItem(new[]
+                        {
+                            new ListViewItem.ListViewSubItem
+                            {
+                                Name = "name",
+                                Text = asset.Asset.GetName()
+                            },
+                            new ListViewItem.ListViewSubItem
+                            {
+                                Name = "type",
+                                Text = asset.Asset.AssetType.ToString()
+                            },
+                            new ListViewItem.ListViewSubItem
+                            {
+                                Name = "value",
+                                Text = asset.Value.ToString()
+                            },
+                            new ListViewItem.ListViewSubItem
+                            {
+                                ForeColor = Color.Gray,
+                                Name = "issuer",
+                                Text = $"未知发行者[{asset.Asset.Issuer}]"
+                            }
+                        }, -1, listView2.Groups["unchecked"])
+                        {
+                            Name = asset.Asset.Hash.ToString(),
+                            Tag = asset.Asset,
+                            UseItemStyleForSubItems = false
+                        });
+                    }
+                }
+                balance_changed = false;
+            }
+            foreach (ListViewItem item in listView2.Groups["unchecked"].Items.OfType<ListViewItem>().ToArray())
+            {
+                ListViewItem.ListViewSubItem subitem = item.SubItems["issuer"];
+                RegisterTransaction asset = (RegisterTransaction)item.Tag;
+                using (CertificateQueryResult result = CertificateQueryService.Query(asset.Issuer))
+                {
+                    switch (result.Type)
+                    {
+                        case CertificateQueryResultType.Querying:
+                        case CertificateQueryResultType.QueryFailed:
+                            break;
+                        case CertificateQueryResultType.System:
+                            subitem.ForeColor = Color.Green;
+                            subitem.Text = "小蚁系统";
+                            break;
+                        case CertificateQueryResultType.Invalid:
+                            subitem.ForeColor = Color.Red;
+                            subitem.Text = $"[证书错误][{asset.Issuer}]";
+                            break;
+                        case CertificateQueryResultType.Expired:
+                            subitem.ForeColor = Color.Yellow;
+                            subitem.Text = $"[证书已过期]{result.Certificate.Subject}[{asset.Issuer}]";
+                            break;
+                        case CertificateQueryResultType.Good:
+                            subitem.ForeColor = Color.Green;
+                            subitem.Text = $"{result.Certificate.Subject}[{asset.Issuer}]";
+                            break;
+                    }
+                    switch (result.Type)
+                    {
+                        case CertificateQueryResultType.System:
+                        case CertificateQueryResultType.Missing:
+                        case CertificateQueryResultType.Invalid:
+                        case CertificateQueryResultType.Expired:
+                        case CertificateQueryResultType.Good:
+                            item.Group = listView2.Groups["checked"];
+                            break;
+                    }
+                }
+            }
         }
 
         private void 创建钱包数据库NToolStripMenuItem_Click(object sender, EventArgs e)
@@ -158,8 +238,9 @@ private async void 转账TToolStripMenuItem_Click(object sender, EventArgs e)
             using (TransferDialog dialog = new TransferDialog())
             {
                 if (dialog.ShowDialog() != DialogResult.OK) return;
-                SignatureContext context = dialog.GetTransaction();
-                if (context == null) return;
+                Transaction tx = dialog.GetTransaction();
+                if (tx == null) return;
+                SignatureContext context = new SignatureContext(tx);
                 Program.CurrentWallet.Sign(context);
                 await ShowInformationAsync(context);
             }
@@ -173,9 +254,30 @@ private void 签名SToolStripMenuItem_Click(object sender, EventArgs e)
             }
         }
 
-        private void 注册资产RToolStripMenuItem_Click(object sender, EventArgs e)
+        private async void 注册资产RToolStripMenuItem_Click(object sender, EventArgs e)
         {
-
+            using (AssetRegisterDialog dialog = new AssetRegisterDialog())
+            {
+                if (dialog.ShowDialog() != DialogResult.OK) return;
+                Transaction tx = null;
+                try
+                {
+                    tx = dialog.GetTransaction();
+                }
+                catch
+                {
+                    MessageBox.Show("数据填写不完整，或格式错误。");
+                    return;
+                }
+                if (tx == null)
+                {
+                    MessageBox.Show("余额不足以支付系统费用。");
+                    return;
+                }
+                SignatureContext context = new SignatureContext(tx);
+                Program.CurrentWallet.Sign(context);
+                await ShowInformationAsync(context);
+            }
         }
 
         private async void 资产分发IToolStripMenuItem_Click(object sender, EventArgs e)
@@ -183,8 +285,9 @@ private async void 资产分发IToolStripMenuItem_Click(object sender, EventArgs
             using (IssueDialog dialog = new IssueDialog())
             {
                 if (dialog.ShowDialog() != DialogResult.OK) return;
-                SignatureContext context = dialog.GetTransaction();
-                if (context == null) return;
+                Transaction tx = dialog.GetTransaction();
+                if (tx == null) return;
+                SignatureContext context = new SignatureContext(tx);
                 Program.CurrentWallet.Sign(context);
                 await ShowInformationAsync(context);
             }
@@ -279,7 +382,7 @@ private void 删除DToolStripMenuItem_Click(object sender, EventArgs e)
                 UInt160 scriptHash = Wallet.ToScriptHash(address);
                 Program.CurrentWallet.DeleteContract(scriptHash);
             }
-            OnBalanceChanged();
+            balance_changed = true;
         }
     }
 }
diff --git a/AntSharesUI/UI/TransferDialog.cs b/AntSharesUI/UI/TransferDialog.cs
index 5ae23d419a..0178e95eef 100644
--- a/AntSharesUI/UI/TransferDialog.cs
+++ b/AntSharesUI/UI/TransferDialog.cs
@@ -12,11 +12,11 @@ public TransferDialog()
             InitializeComponent();
         }
 
-        public SignatureContext GetTransaction()
+        public ContractTransaction GetTransaction()
         {
             RegisterTransaction tx = comboBox1.SelectedItem as RegisterTransaction;
             if (tx == null) return null;
-            return Program.CurrentWallet.MakeTransaction(listBox1.Items.OfType<TxOutListBoxItem>().GroupBy(p => p.Account).Select(g => new TransactionOutput
+            return Program.CurrentWallet.MakeTransaction<ContractTransaction>(listBox1.Items.OfType<TxOutListBoxItem>().GroupBy(p => p.Account).Select(g => new TransactionOutput
             {
                 AssetId = tx.Hash,
                 Value = g.Sum(p => p.Amount),
diff --git a/Miner/Miner/MainService.cs b/Miner/Miner/MainService.cs
index ac693bd8c5..5b078c344a 100644
--- a/Miner/Miner/MainService.cs
+++ b/Miner/Miner/MainService.cs
@@ -65,6 +65,7 @@ private GenerationTransaction CreateGenerationTransaction(IEnumerable<Transactio
             return new GenerationTransaction
             {
                 Nonce = (uint)(nonce % (uint.MaxValue + 1ul)),
+                Attributes = new TransactionAttribute[0],
                 Inputs = new TransactionInput[0],
                 Outputs = outputs.GroupBy(p => p.ScriptHash, (k, g) => new TransactionOutput
                 {