diff --git a/AntSharesCore/Core/Blockchain.cs b/AntSharesCore/Core/Blockchain.cs
index b09886a5c9..6d39ea2560 100644
--- a/AntSharesCore/Core/Blockchain.cs
+++ b/AntSharesCore/Core/Blockchain.cs
@@ -66,17 +66,17 @@ public abstract class Blockchain : IDisposable
         {
             AssetType = AssetType.AntShare,
 #if TESTNET
-            Name = "[{\"lang\":\"zh-CN\",\"name\":\"小蚁股(测试)\"},{\"lang\":\"en\",\"name\":\"AntShare(TestNet)\"}]",
+            Name = "[{'lang':'zh-CN','name':'小蚁股(测试)'},{'lang':'en','name':'AntShare(TestNet)'}]",
 #else
-            Name = "[{\"lang\":\"zh-CN\",\"name\":\"小蚁股\"},{\"lang\":\"en\",\"name\":\"AntShare\"}]",
+            Name = "[{'lang':'zh-CN','name':'小蚁股'},{'lang':'en','name':'AntShare'}]",
 #endif
             Amount = Fixed8.FromDecimal(100000000),
-            Precision = 0,
-            Issuer = ECCurve.Secp256r1.Infinity,
+            Issuer = ECPoint.DecodePoint((new[] { (byte)0x02 }).Concat(ECCurve.Secp256r1.G.EncodePoint(false).Skip(1).Sha256().Sha256()).ToArray(), ECCurve.Secp256r1),
             Admin = (new[] { (byte)ScriptOp.OP_TRUE }).ToScriptHash(),
             Attributes = new TransactionAttribute[0],
             Inputs = new TransactionInput[0],
-            Outputs = new TransactionOutput[0]
+            Outputs = new TransactionOutput[0],
+            Scripts = new Script[0]
         };
 
         /// <summary>
@@ -86,17 +86,17 @@ public abstract class Blockchain : IDisposable
         {
             AssetType = AssetType.AntCoin,
 #if TESTNET
-            Name = "[{\"lang\":\"zh-CN\",\"name\":\"小蚁币(测试)\"},{\"lang\":\"en\",\"name\":\"AntCoin(TestNet)\"}]",
+            Name = "[{'lang':'zh-CN','name':'小蚁币(测试)'},{'lang':'en','name':'AntCoin(TestNet)'}]",
 #else
-            Name = "[{\"lang\":\"zh-CN\",\"name\":\"小蚁币\"},{\"lang\":\"en\",\"name\":\"AntCoin\"}]",
+            Name = "[{'lang':'zh-CN','name':'小蚁币'},{'lang':'en','name':'AntCoin'}]",
 #endif
             Amount = Fixed8.FromDecimal(MintingAmount.Sum(p => p * DecrementInterval)),
-            Precision = 8,
-            Issuer = ECCurve.Secp256r1.Infinity,
+            Issuer = ECPoint.DecodePoint((new[] { (byte)0x02 }).Concat(ECCurve.Secp256r1.G.EncodePoint(false).Skip(1).Sha256().Sha256()).ToArray(), ECCurve.Secp256r1),
             Admin = (new[] { (byte)ScriptOp.OP_FALSE }).ToScriptHash(),
             Attributes = new TransactionAttribute[0],
             Inputs = new TransactionInput[0],
-            Outputs = new TransactionOutput[0]
+            Outputs = new TransactionOutput[0],
+            Scripts = new Script[0]
         };
 
         /// <summary>
@@ -128,6 +128,7 @@ public abstract class Blockchain : IDisposable
                 AntCoin,
                 new IssueTransaction
                 {
+                    Nonce = 2083236893,
                     Attributes = new TransactionAttribute[0],
                     Inputs = new TransactionInput[0],
                     Outputs = new[]
@@ -182,18 +183,6 @@ public abstract class Blockchain : IDisposable
 
         static Blockchain()
         {
-            AntShare.Scripts = new[] { new Script { RedeemScript = Contract.CreateSignatureRedeemScript(AntShare.Issuer) } };
-            using (ScriptBuilder sb = new ScriptBuilder())
-            {
-                sb.Push(ECCurve.Secp256r1.G.EncodePoint(true).Skip(1).Concat(AntShare.GetHashForSigning()).ToArray());
-                AntShare.Scripts[0].StackScript = sb.ToArray();
-            }
-            AntCoin.Scripts = new[] { new Script { RedeemScript = Contract.CreateSignatureRedeemScript(AntCoin.Issuer) } };
-            using (ScriptBuilder sb = new ScriptBuilder())
-            {
-                sb.Push(ECCurve.Secp256r1.G.EncodePoint(true).Skip(1).Concat(AntCoin.GetHashForSigning()).ToArray());
-                AntCoin.Scripts[0].StackScript = sb.ToArray();
-            }
             GenesisBlock.RebuildMerkleRoot();
         }
 
@@ -349,7 +338,7 @@ public virtual IEnumerable<ECPoint> GetMiners(IEnumerable<Transaction> others)
             Dictionary<UInt256, ECPoint> enrollments = GetEnrollments(others).ToDictionary(p => p.Hash, p => p.PublicKey);
             foreach (var vote in votes)
             {
-                foreach (UInt256 hash in vote.Enrollments.Take(miner_count))
+                foreach (UInt256 hash in vote.Enrollments)
                 {
                     if (!enrollments.ContainsKey(hash)) continue;
                     ECPoint pubkey = enrollments[hash];
diff --git a/AntSharesCore/Core/IssueTransaction.cs b/AntSharesCore/Core/IssueTransaction.cs
index d8a1759e71..975813945a 100644
--- a/AntSharesCore/Core/IssueTransaction.cs
+++ b/AntSharesCore/Core/IssueTransaction.cs
@@ -1,6 +1,7 @@
 using AntShares.Network;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 
 namespace AntShares.Core
@@ -10,6 +11,11 @@ namespace AntShares.Core
     /// </summary>
     public class IssueTransaction : Transaction
     {
+        /// <summary>
+        /// 随机数
+        /// </summary>
+        public uint Nonce;
+
         /// <summary>
         /// 系统费用
         /// </summary>
@@ -32,6 +38,15 @@ public IssueTransaction()
         {
         }
 
+        /// <summary>
+        /// 反序列化交易中的额外数据
+        /// </summary>
+        /// <param name="reader">数据来源</param>
+        protected override void DeserializeExclusiveData(BinaryReader reader)
+        {
+            this.Nonce = reader.ReadUInt32();
+        }
+
         /// <summary>
         /// 获取需要校验的脚本散列值
         /// </summary>
@@ -48,6 +63,15 @@ public override UInt160[] GetScriptHashesForVerifying()
             return hashes.OrderBy(p => p).ToArray();
         }
 
+        /// <summary>
+        /// 序列化交易中的额外数据
+        /// </summary>
+        /// <param name="writer">存放序列化后的结果</param>
+        protected override void SerializeExclusiveData(BinaryWriter writer)
+        {
+            writer.Write(Nonce);
+        }
+
         /// <summary>
         /// 验证交易
         /// </summary>
diff --git a/AntSharesCore/Core/RegisterTransaction.cs b/AntSharesCore/Core/RegisterTransaction.cs
index 28c0339da7..3e87310e6c 100644
--- a/AntSharesCore/Core/RegisterTransaction.cs
+++ b/AntSharesCore/Core/RegisterTransaction.cs
@@ -30,7 +30,6 @@ public class RegisterTransaction : Transaction
         /// 2. 不限量模式：当Amount等于-1时，表示当前资产可以由创建者无限量发行。这种模式的自由度最大，但是公信力最低，不建议使用。
         /// </summary>
         public Fixed8 Amount;
-        public byte Precision;
         /// <summary>
         /// 发行者的公钥
         /// </summary>
@@ -40,7 +39,7 @@ public class RegisterTransaction : Transaction
         /// </summary>
         public UInt160 Admin;
 
-        private static readonly string ShareName = "[{\"lang\":\"zh-CN\",\"name\":\"股权\"},{\"lang\":\"en\",\"name\":\"Share\"}]";
+        private static readonly string ShareName = "[{'lang':'zh-CN','name':'股权'},{'lang':'en','name':'Share'}]";
 
         /// <summary>
         /// 系统费用
@@ -70,20 +69,18 @@ public RegisterTransaction()
         /// <param name="reader">数据来源</param>
         protected override void DeserializeExclusiveData(BinaryReader reader)
         {
-            AssetType = (AssetType)reader.ReadByte();
+            this.AssetType = (AssetType)reader.ReadByte();
             if (!Enum.IsDefined(typeof(AssetType), AssetType) || AssetType == AssetType.CreditFlag || AssetType == AssetType.DutyFlag)
                 throw new FormatException();
-            Name = reader.ReadVarString();
-            Amount = reader.ReadSerializable<Fixed8>();
+            this.Name = reader.ReadVarString();
+            this.Amount = reader.ReadSerializable<Fixed8>();
             if (Amount == Fixed8.Zero || Amount < -Fixed8.Satoshi) throw new FormatException();
             if (AssetType == AssetType.Share && Amount <= Fixed8.Zero)
                 throw new FormatException();
             if (AssetType == AssetType.Invoice && Amount != -Fixed8.Satoshi)
                 throw new FormatException();
-            Precision = reader.ReadByte();
-            if (Precision > 8) throw new FormatException();
-            Issuer = ECPoint.DeserializeFrom(reader, ECCurve.Secp256r1);
-            Admin = reader.ReadSerializable<UInt160>();
+            this.Issuer = ECPoint.DeserializeFrom(reader, ECCurve.Secp256r1);
+            this.Admin = reader.ReadSerializable<UInt160>();
         }
 
         private Dictionary<CultureInfo, string> _names;
@@ -125,7 +122,7 @@ public string GetName(CultureInfo culture = null)
         public override UInt160[] GetScriptHashesForVerifying()
         {
             UInt160 issuer = Contract.CreateSignatureRedeemScript(Issuer).ToScriptHash();
-            return base.GetScriptHashesForVerifying().Union(new[] { issuer }).OrderBy(p => p).ToArray();
+            return base.GetScriptHashesForVerifying().Union(new UInt160[] { issuer, Admin }).OrderBy(p => p).ToArray();
         }
 
         protected override void OnDeserialized()
@@ -146,7 +143,6 @@ protected override void SerializeExclusiveData(BinaryWriter writer)
             writer.Write((byte)AssetType);
             writer.WriteVarString(Name);
             writer.Write(Amount);
-            writer.Write(Precision);
             writer.Write(Issuer);
             writer.Write(Admin);
         }
@@ -169,7 +165,6 @@ public override JObject ToJson()
                 json["asset"]["name"] = Name;
             }
             json["asset"]["amount"] = Amount.ToString();
-            json["asset"]["precision"] = Precision;
             json["asset"]["high"] = Amount.GetData() >> 32;
             json["asset"]["low"] = Amount.GetData() & 0xffffffff;
             json["asset"]["issuer"] = Issuer.ToString();
diff --git a/AntSharesCore/Core/Transaction.cs b/AntSharesCore/Core/Transaction.cs
index 6fd6b003d3..d65cd6f0ec 100644
--- a/AntSharesCore/Core/Transaction.cs
+++ b/AntSharesCore/Core/Transaction.cs
@@ -22,10 +22,6 @@ public abstract class Transaction : IInventory
         /// </summary>
         public readonly TransactionType Type;
         /// <summary>
-        /// 版本
-        /// </summary>
-        public const byte Version = 0;
-        /// <summary>
         /// 该交易所具备的额外特性
         /// </summary>
         public TransactionAttribute[] Attributes;
@@ -164,8 +160,6 @@ void ISignable.DeserializeUnsigned(BinaryReader reader)
 
         private void DeserializeUnsignedWithoutType(BinaryReader reader)
         {
-            if (reader.ReadByte() != Version)
-                throw new FormatException();
             DeserializeExclusiveData(reader);
             Attributes = reader.ReadSerializableArray<TransactionAttribute>();
             if (Attributes.Select(p => p.Usage).Distinct().Count() != Attributes.Length)
@@ -179,6 +173,10 @@ private void DeserializeUnsignedWithoutType(BinaryReader reader)
             Outputs = reader.ReadSerializableArray<TransactionOutput>();
             if (Outputs.Length > ushort.MaxValue + 1)
                 throw new FormatException();
+            if (Blockchain.AntShare != null)
+                foreach (TransactionOutput output in Outputs.Where(p => p.AssetId == Blockchain.AntShare.Hash))
+                    if (output.Value.GetData() % 100000000 != 0)
+                        throw new FormatException();
         }
 
         public bool Equals(Transaction other)
@@ -277,7 +275,6 @@ protected virtual void SerializeExclusiveData(BinaryWriter writer)
         void ISignable.SerializeUnsigned(BinaryWriter writer)
         {
             writer.Write((byte)Type);
-            writer.Write(Version);
             SerializeExclusiveData(writer);
             writer.Write(Attributes);
             writer.Write(Inputs);
@@ -315,9 +312,6 @@ public virtual bool Verify()
             {
                 RegisterTransaction asset = Blockchain.Default.GetTransaction(group.Key) as RegisterTransaction;
                 if (asset == null) return false;
-                foreach (TransactionOutput output in group)
-                    if (output.Value.GetData() % (long)Math.Pow(10, 8 - asset.Precision) != 0)
-                        return false;
             }
             TransactionResult[] results = GetTransactionResults()?.ToArray();
             if (results == null) return false;
diff --git a/AntSharesCore/Network/InventoryType.cs b/AntSharesCore/Network/InventoryType.cs
index fe9fe0b08e..f24db414c2 100644
--- a/AntSharesCore/Network/InventoryType.cs
+++ b/AntSharesCore/Network/InventoryType.cs
@@ -3,7 +3,7 @@
     /// <summary>
     /// 定义清单中的对象类型
     /// </summary>
-    public enum InventoryType : byte
+    public enum InventoryType : uint
     {
         /// <summary>
         /// 交易
diff --git a/AntSharesCore/Network/Payloads/InvPayload.cs b/AntSharesCore/Network/Payloads/InvPayload.cs
index fd3f1a540f..6e9a82623b 100644
--- a/AntSharesCore/Network/Payloads/InvPayload.cs
+++ b/AntSharesCore/Network/Payloads/InvPayload.cs
@@ -1,35 +1,37 @@
 using AntShares.IO;
-using System;
 using System.IO;
+using System.Linq;
 
 namespace AntShares.Network.Payloads
 {
     internal class InvPayload : ISerializable
     {
-        public InventoryType Type;
-        public UInt256[] Hashes;
+        public InventoryVector[] Inventories;
+
+        public static InvPayload Create(InventoryVector[] vectors)
+        {
+            return new InvPayload
+            {
+                Inventories = vectors
+            };
+        }
 
         public static InvPayload Create(InventoryType type, params UInt256[] hashes)
         {
             return new InvPayload
             {
-                Type = type,
-                Hashes = hashes
+                Inventories = hashes.Select(p => new InventoryVector { Type = type, Hash = p }).ToArray()
             };
         }
 
         void ISerializable.Deserialize(BinaryReader reader)
         {
-            Type = (InventoryType)reader.ReadByte();
-            if (!Enum.IsDefined(typeof(InventoryType), Type))
-                throw new FormatException();
-            Hashes = reader.ReadSerializableArray<UInt256>();
+            Inventories = reader.ReadSerializableArray<InventoryVector>();
         }
 
         void ISerializable.Serialize(BinaryWriter writer)
         {
-            writer.Write((byte)Type);
-            writer.Write(Hashes);
+            writer.Write(Inventories);
         }
     }
 }
diff --git a/AntSharesCore/Network/Payloads/InventoryVector.cs b/AntSharesCore/Network/Payloads/InventoryVector.cs
new file mode 100644
index 0000000000..3f68d82e42
--- /dev/null
+++ b/AntSharesCore/Network/Payloads/InventoryVector.cs
@@ -0,0 +1,44 @@
+using AntShares.IO;
+using System;
+using System.IO;
+
+namespace AntShares.Network.Payloads
+{
+    internal class InventoryVector : IEquatable<InventoryVector>, ISerializable
+    {
+        public InventoryType Type;
+        public UInt256 Hash;
+
+        void ISerializable.Deserialize(BinaryReader reader)
+        {
+            Type = (InventoryType)reader.ReadUInt32();
+            if (!Enum.IsDefined(typeof(InventoryType), Type))
+                throw new FormatException();
+            Hash = reader.ReadSerializable<UInt256>();
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (!(obj is InventoryVector)) return false;
+            return Equals((InventoryVector)obj);
+        }
+
+        public bool Equals(InventoryVector other)
+        {
+            if (ReferenceEquals(other, null)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return Hash == other.Hash;
+        }
+
+        public override int GetHashCode()
+        {
+            return Hash.GetHashCode();
+        }
+
+        void ISerializable.Serialize(BinaryWriter writer)
+        {
+            writer.Write((uint)Type);
+            writer.Write(Hash);
+        }
+    }
+}
diff --git a/AntSharesCore/Network/Payloads/VersionPayload.cs b/AntSharesCore/Network/Payloads/VersionPayload.cs
index 6a44658b28..ecff16cc7b 100644
--- a/AntSharesCore/Network/Payloads/VersionPayload.cs
+++ b/AntSharesCore/Network/Payloads/VersionPayload.cs
@@ -14,7 +14,6 @@ internal class VersionPayload : ISerializable
         public uint Nonce;
         public string UserAgent;
         public uint StartHeight;
-        public bool Relay;
 
         public static VersionPayload Create(int port, uint nonce, string userAgent)
         {
@@ -26,8 +25,7 @@ public static VersionPayload Create(int port, uint nonce, string userAgent)
                 Port = (ushort)port,
                 Nonce = nonce,
                 UserAgent = userAgent,
-                StartHeight = Blockchain.Default?.Height ?? 0,
-                Relay = true
+                StartHeight = Blockchain.Default?.Height ?? 0
             };
         }
 
diff --git a/AntSharesCore/Network/RemoteNode.cs b/AntSharesCore/Network/RemoteNode.cs
index 4279a30b97..7b25d12bf5 100644
--- a/AntSharesCore/Network/RemoteNode.cs
+++ b/AntSharesCore/Network/RemoteNode.cs
@@ -179,22 +179,22 @@ private void OnGetBlocksMessageReceived(GetBlocksPayload payload)
 
         private void OnGetDataMessageReceived(InvPayload payload)
         {
-            foreach (UInt256 hash in payload.Hashes.Distinct())
+            foreach (InventoryVector vector in payload.Inventories.Distinct())
             {
                 IInventory inventory;
-                if (!localNode.RelayCache.TryGet(hash, out inventory) && !localNode.ServiceEnabled)
+                if (!localNode.RelayCache.TryGet(vector.Hash, out inventory) && !localNode.ServiceEnabled)
                     continue;
-                switch (payload.Type)
+                switch (vector.Type)
                 {
                     case InventoryType.TX:
                         if (inventory == null && Blockchain.Default != null)
-                            inventory = Blockchain.Default.GetTransaction(hash);
+                            inventory = Blockchain.Default.GetTransaction(vector.Hash);
                         if (inventory != null)
                             EnqueueMessage("tx", inventory);
                         break;
                     case InventoryType.Block:
                         if (inventory == null && Blockchain.Default != null)
-                            inventory = Blockchain.Default.GetBlock(hash);
+                            inventory = Blockchain.Default.GetBlock(vector.Hash);
                         if (inventory != null)
                         {
                             BloomFilter filter = bloom_filter;
@@ -258,26 +258,24 @@ private void OnInventoryReceived(IInventory inventory)
 
         private void OnInvMessageReceived(InvPayload payload)
         {
-            if (payload.Type != InventoryType.TX && payload.Type != InventoryType.Block && payload.Type != InventoryType.Consensus)
-                return;
-            UInt256[] hashes = payload.Hashes.Distinct().ToArray();
+            InventoryVector[] vectors = payload.Inventories.Distinct().Where(p => Enum.IsDefined(typeof(InventoryType), p.Type)).ToArray();
             lock (LocalNode.KnownHashes)
             {
-                hashes = hashes.Where(p => !LocalNode.KnownHashes.Contains(p)).ToArray();
+                vectors = vectors.Where(p => !LocalNode.KnownHashes.Contains(p.Hash)).ToArray();
             }
-            if (hashes.Length == 0) return;
+            if (vectors.Length == 0) return;
             lock (missions_global)
             {
                 if (localNode.GlobalMissionsEnabled)
-                    hashes = hashes.Where(p => !missions_global.Contains(p)).ToArray();
-                foreach (UInt256 hash in hashes)
+                    vectors = vectors.Where(p => !missions_global.Contains(p.Hash)).ToArray();
+                foreach (InventoryVector vector in vectors)
                 {
-                    missions_global.Add(hash);
-                    missions.Add(hash);
+                    missions_global.Add(vector.Hash);
+                    missions.Add(vector.Hash);
                 }
             }
-            if (hashes.Length == 0) return;
-            EnqueueMessage("getdata", InvPayload.Create(payload.Type, hashes));
+            if (vectors.Length == 0) return;
+            EnqueueMessage("getdata", InvPayload.Create(vectors));
         }
 
         private void OnMemPoolMessageReceived()
@@ -376,7 +374,6 @@ private Message ReceiveMessage(TimeSpan timeout)
 
         internal bool Relay(IInventory data)
         {
-            if (!Version.Relay) return false;
             if (data.InventoryType == InventoryType.TX)
             {
                 BloomFilter filter = bloom_filter;
diff --git a/AntSharesCore/project.json b/AntSharesCore/project.json
index cd7ee945f5..588c22b5d8 100644
--- a/AntSharesCore/project.json
+++ b/AntSharesCore/project.json
@@ -1,8 +1,11 @@
 {
   "copyright": "? AntShares Project 2015 Released under the MIT license",
   "title": "AntShares",
-  "version": "1.0-coreclr",
-  "buildOptions": { "allowUnsafe": true },
+  "version": "0.7.1-coreclr",
+  "buildOptions": {
+    "allowUnsafe": true,
+    "define": [ "TESTNET" ]
+  },
 
   "dependencies": {
     "Microsoft.EntityFrameworkCore.Sqlite": "1.0.0",
diff --git a/AntSharesDaemon/project.json b/AntSharesDaemon/project.json
index dcd34235ac..a14afc4cc2 100644
--- a/AntSharesDaemon/project.json
+++ b/AntSharesDaemon/project.json
@@ -1,14 +1,14 @@
 {
   "copyright": "© AntShares Project 2016 Released under the MIT license",
   "title": "AntShares",
-  "version": "1.0-coreclr",
+  "version": "0.7.1-coreclr",
   "buildOptions": {
     "emitEntryPoint": true,
-    "define": [ "DEBUG" ]
+    "define": [ "DEBUG", "TESTNET" ]
   },
 
   "dependencies": {
-    "AntSharesCore": "1.0-coreclr",
+    "AntSharesCore": "0.7.1-coreclr",
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
     "Microsoft.NETCore.App": {
       "type": "platform",
diff --git a/AntSharesDaemon/project.lock.json b/AntSharesDaemon/project.lock.json
index d452e857e3..b8b5097dcf 100644
--- a/AntSharesDaemon/project.lock.json
+++ b/AntSharesDaemon/project.lock.json
@@ -2835,7 +2835,7 @@
           "lib/netstandard1.3/System.Xml.XPath.XmlDocument.dll": {}
         }
       },
-      "AntSharesCore/1.0.0-coreclr": {
+      "AntSharesCore/0.7.1-coreclr": {
         "type": "project",
         "framework": ".NETStandard,Version=v1.6",
         "dependencies": {
@@ -8180,7 +8180,7 @@
         "ref/xamarinwatchos10/_._"
       ]
     },
-    "AntSharesCore/1.0.0-coreclr": {
+    "AntSharesCore/0.7.1-coreclr": {
       "type": "project",
       "path": "../AntSharesCore/project.json",
       "msbuildProject": "../AntSharesCore/AntSharesCore.xproj"
@@ -8188,7 +8188,7 @@
   },
   "projectFileDependencyGroups": {
     "": [
-      "AntSharesCore >= 1.0.0-coreclr",
+      "AntSharesCore >= 0.7.1-coreclr",
       "Microsoft.AspNetCore.Server.Kestrel >= 1.0.0",
       "Microsoft.NETCore.App >= 1.0.1"
     ],
diff --git a/AntSharesUI/AntSharesUI.csproj b/AntSharesUI/AntSharesUI.csproj
index 2d71bc4aaf..27aa5aa6d3 100644
--- a/AntSharesUI/AntSharesUI.csproj
+++ b/AntSharesUI/AntSharesUI.csproj
@@ -39,7 +39,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
     <DebugSymbols>true</DebugSymbols>
     <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>TRACE;DEBUG</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;TESTNET</DefineConstants>
     <DebugType>full</DebugType>
     <PlatformTarget>AnyCPU</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
@@ -54,6 +54,7 @@
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
     <Prefer32Bit>false</Prefer32Bit>
+    <DefineConstants>TESTNET</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/AntSharesUI/Properties/AssemblyInfo.cs b/AntSharesUI/Properties/AssemblyInfo.cs
index 5d5d08056b..0de6ea6fcb 100644
--- a/AntSharesUI/Properties/AssemblyInfo.cs
+++ b/AntSharesUI/Properties/AssemblyInfo.cs
@@ -30,6 +30,6 @@
 //
 // 可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值，
 // 方法是按如下所示使用“*”: 
-[assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("0.6.*")]
 //[assembly: AssemblyVersion("1.0.0.0")]
 //[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/AntSharesUI/UI/AssetRegisterDialog.cs b/AntSharesUI/UI/AssetRegisterDialog.cs
index 743aa5fb81..11ba2b0f99 100644
--- a/AntSharesUI/UI/AssetRegisterDialog.cs
+++ b/AntSharesUI/UI/AssetRegisterDialog.cs
@@ -21,7 +21,6 @@ public RegisterTransaction GetTransaction()
                 AssetType = (AssetType)comboBox1.SelectedItem,
                 Name = (AssetType)comboBox1.SelectedItem == AssetType.Share ? string.Empty : $"[{{'lang':'zh-CN','name':'{textBox1.Text}'}}]",
                 Amount = checkBox1.Checked ? Fixed8.Parse(textBox2.Text) : -Fixed8.Satoshi,
-                Precision = 8,
                 Issuer = (ECPoint)comboBox2.SelectedItem,
                 Admin = Wallet.ToScriptHash(comboBox3.Text),
                 Outputs = new TransactionOutput[0]
diff --git a/AntSharesUI/UI/IssueDialog.cs b/AntSharesUI/UI/IssueDialog.cs
index 0d763fe112..87ae4a6031 100644
--- a/AntSharesUI/UI/IssueDialog.cs
+++ b/AntSharesUI/UI/IssueDialog.cs
@@ -24,8 +24,10 @@ public IssueDialog(RegisterTransaction asset = null)
         public IssueTransaction GetTransaction()
         {
             if (txOutListBox1.Asset == null) return null;
+            Random rand = new Random();
             return Program.CurrentWallet.MakeTransaction(new IssueTransaction
             {
+                Nonce = (uint)rand.Next(),
                 Outputs = txOutListBox1.Items.GroupBy(p => p.Output.ScriptHash).Select(g => new TransactionOutput
                 {
                     AssetId = txOutListBox1.Asset.Hash,
diff --git a/Miner/project.json b/Miner/project.json
index d14e7d09b0..57f74720d5 100644
--- a/Miner/project.json
+++ b/Miner/project.json
@@ -1,14 +1,14 @@
 {
   "copyright": "© AntShares Project 2015 Released under the MIT license",
   "title": "AntShares",
-  "version": "1.0-coreclr",
+  "version": "0.7.1-coreclr",
   "buildOptions": {
     "emitEntryPoint": true
   },
 
   "dependencies": {
-    "AntSharesCore": "1.0-coreclr",
-    "AntSharesDaemon": "1.0-coreclr",
+    "AntSharesCore": "0.7.1-coreclr",
+    "AntSharesDaemon": "0.7.1-coreclr",
     "Microsoft.NETCore.App": {
       "type": "platform",
       "version": "1.0.1"
diff --git a/Miner/project.lock.json b/Miner/project.lock.json
index c628b8fbbb..5bb1e29964 100644
--- a/Miner/project.lock.json
+++ b/Miner/project.lock.json
@@ -2835,7 +2835,7 @@
           "lib/netstandard1.3/System.Xml.XPath.XmlDocument.dll": {}
         }
       },
-      "AntSharesCore/1.0.0-coreclr": {
+      "AntSharesCore/0.7.1-coreclr": {
         "type": "project",
         "framework": ".NETStandard,Version=v1.6",
         "dependencies": {
@@ -2860,11 +2860,11 @@
           "netstandard1.6/AntSharesCore.dll": {}
         }
       },
-      "AntSharesDaemon/1.0.0-coreclr": {
+      "AntSharesDaemon/0.7.1-coreclr": {
         "type": "project",
         "framework": ".NETCoreApp,Version=v1.0",
         "dependencies": {
-          "AntSharesCore": "1.0.0-coreclr",
+          "AntSharesCore": "0.7.1-coreclr",
           "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
           "Microsoft.NETCore.App": "1.0.1"
         },
@@ -8195,12 +8195,12 @@
         "ref/xamarinwatchos10/_._"
       ]
     },
-    "AntSharesCore/1.0.0-coreclr": {
+    "AntSharesCore/0.7.1-coreclr": {
       "type": "project",
       "path": "../AntSharesCore/project.json",
       "msbuildProject": "../AntSharesCore/AntSharesCore.xproj"
     },
-    "AntSharesDaemon/1.0.0-coreclr": {
+    "AntSharesDaemon/0.7.1-coreclr": {
       "type": "project",
       "path": "../AntSharesDaemon/project.json",
       "msbuildProject": "../AntSharesDaemon/AntSharesDaemon.xproj"
@@ -8208,8 +8208,8 @@
   },
   "projectFileDependencyGroups": {
     "": [
-      "AntSharesCore >= 1.0.0-coreclr",
-      "AntSharesDaemon >= 1.0.0-coreclr",
+      "AntSharesCore >= 0.7.1-coreclr",
+      "AntSharesDaemon >= 0.7.1-coreclr",
       "Microsoft.NETCore.App >= 1.0.1"
     ],
     ".NETCoreApp,Version=v1.0": []