Do not crash if some of the altcoins are unavailable

Resolving problems with Vue console warnings

BTCPayServer.Tests/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/dotnet:2.0.0-sdk
+FROM microsoft/dotnet:2.0.5-sdk-2.1.4
 WORKDIR /app
  # caches restore result by copying csproj file separately
 COPY BTCPayServer.Tests/BTCPayServer.Tests.csproj BTCPayServer.Tests/BTCPayServer.Tests.csproj

BTCPayServer.Tests/TestAccount.cs

@@ -46,26 +46,28 @@ namespace BTCPayServer.Tests
             Assert.IsType<ViewResult>(await store.RequestPairing(pairingCode.ToString()));
             await store.Pair(pairingCode.ToString(), StoreId);
         }
-        public StoresController CreateStore(string cryptoCode = "BTC")
+        public StoresController CreateStore(string cryptoCode = null)
         {
             return CreateStoreAsync(cryptoCode).GetAwaiter().GetResult();
         }
-        public async Task<StoresController> CreateStoreAsync(string cryptoCode = "BTC")
+
+        public string CryptoCode { get; set; } = "BTC";
+        public async Task<StoresController> CreateStoreAsync(string cryptoCode = null)
         {
+            cryptoCode = cryptoCode ?? CryptoCode;
             SupportedNetwork = parent.NetworkProvider.GetNetwork(cryptoCode);
             ExtKey = new ExtKey().GetWif(SupportedNetwork.NBitcoinNetwork);
             var store = parent.PayTester.GetController<StoresController>(UserId);
             await store.CreateStore(new CreateStoreViewModel() { Name = "Test Store" });
             StoreId = store.CreatedStoreId;
             DerivationScheme = new DerivationStrategyFactory(SupportedNetwork.NBitcoinNetwork).Parse(ExtKey.Neuter().ToString() + "-[legacy]");
-            await store.UpdateStore(StoreId, new StoreViewModel()
-            {
-                SpeedPolicy = SpeedPolicy.MediumSpeed
-            });
+            var vm = (StoreViewModel)((ViewResult)await store.UpdateStore(StoreId)).Model;
+            vm.SpeedPolicy = SpeedPolicy.MediumSpeed;
+            await store.UpdateStore(StoreId, vm);
 
             await store.AddDerivationScheme(StoreId, new DerivationSchemeViewModel()
             {
-                CryptoCurrency = "BTC",
+                CryptoCurrency = cryptoCode,
                 DerivationSchemeFormat = "BTCPay",
                 DerivationScheme = DerivationScheme.ToString(),
             }, "Save");

BTCPayServer.Tests/UnitTest1.cs

@@ -24,6 +24,8 @@ using BTCPayServer.Services.Rates;
 using Microsoft.Extensions.Caching.Memory;
 using BTCPayServer.Eclair;
 using System.Collections.Generic;
+using BTCPayServer.Models.StoreViewModels;
+using System.Threading.Tasks;
 
 namespace BTCPayServer.Tests
 {
@@ -49,7 +51,7 @@ namespace BTCPayServer.Tests
             // Some check that handling legacy stuff does not break things
             var cryptoData = entity.GetCryptoData("BTC", null, true);
             cryptoData.Calculate();
-            Assert.NotNull(cryptoData); 
+            Assert.NotNull(cryptoData);
             Assert.Null(entity.GetCryptoData("BTC", null, false));
             entity.SetCryptoData(new CryptoData() { ParentEntity = entity, Rate = entity.Rate, CryptoCode = "BTC", TxFee = entity.TxFee });
             Assert.NotNull(entity.GetCryptoData("BTC", null, false));
@@ -278,7 +280,8 @@ namespace BTCPayServer.Tests
                         OrderId = "orderId",
                         NotificationURL = callbackServer.GetUri().AbsoluteUri,
                         ItemDesc = "Some description",
-                        FullNotifications = true
+                        FullNotifications = true,
+                        ExtendedNotifications = true
                     });
                     BitcoinUrlBuilder url = new BitcoinUrlBuilder(invoice.PaymentUrls.BIP21);
                     tester.ExplorerNode.SendToAddress(url.Address, url.Amount);
@@ -359,7 +362,7 @@ namespace BTCPayServer.Tests
                 change.Value -= (payment2 - payment1) * 2; //Add more fees
                 var replaced = tester.ExplorerNode.SignRawTransaction(tx);
                 tester.ExplorerNode.SendRawTransaction(replaced);
-                var test = tester.ExplorerClient.Sync(user.DerivationScheme, null);
+                var test = tester.ExplorerClient.GetUTXOs(user.DerivationScheme, null);
                 Eventually(() =>
                 {
                     invoice = user.BitPay.GetInvoice(invoice.Id);
@@ -392,6 +395,109 @@ namespace BTCPayServer.Tests
             }
         }
 
+
+        [Fact]
+        public void CanTweakRate()
+        {
+            using (var tester = ServerTester.Create())
+            {
+                tester.Start();
+                var user = tester.NewAccount();
+                user.GrantAccess();
+
+
+                // First we try payment with a merchant having only BTC
+                var invoice1 = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 5000.0,
+                    Currency = "USD",
+                    PosData = "posData",
+                    OrderId = "orderId",
+                    ItemDesc = "Some description",
+                    FullNotifications = true
+                }, Facade.Merchant);
+
+
+                var storeController = tester.PayTester.GetController<StoresController>(user.UserId);
+                var vm = (StoreViewModel)((ViewResult)storeController.UpdateStore(user.StoreId).Result).Model;
+                Assert.Equal(1.0, vm.RateMultiplier);
+                vm.RateMultiplier = 0.5;
+                storeController.UpdateStore(user.StoreId, vm).Wait();
+
+
+                var invoice2 = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 5000.0,
+                    Currency = "USD",
+                    PosData = "posData",
+                    OrderId = "orderId",
+                    ItemDesc = "Some description",
+                    FullNotifications = true
+                }, Facade.Merchant);
+
+                Assert.True(invoice2.BtcPrice.Almost(invoice1.BtcPrice * 2, 0.00001m));
+            }
+        }
+
+        [Fact]
+        public void CanHaveLTCOnlyStore()
+        {
+            using (var tester = ServerTester.Create())
+            {
+                tester.Start();
+                var user = tester.NewAccount();
+                user.CryptoCode = "LTC";
+                user.GrantAccess();
+
+                // First we try payment with a merchant having only BTC
+                var invoice = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 500,
+                    Currency = "USD",
+                    PosData = "posData",
+                    OrderId = "orderId",
+                    ItemDesc = "Some description",
+                    FullNotifications = true
+                }, Facade.Merchant);
+
+                Assert.Single(invoice.CryptoInfo);
+                Assert.Equal("LTC", invoice.CryptoInfo[0].CryptoCode);
+                var cashCow = tester.LTCExplorerNode;
+                var invoiceAddress = BitcoinAddress.Create(invoice.CryptoInfo[0].Address, cashCow.Network);
+                var firstPayment = Money.Coins(0.1m);
+                cashCow.SendToAddress(invoiceAddress, firstPayment);
+                Eventually(() =>
+                {
+                    invoice = user.BitPay.GetInvoice(invoice.Id);
+                    Assert.Equal(firstPayment, invoice.CryptoInfo[0].Paid);
+                });
+
+                Assert.Single(invoice.CryptoInfo); // Only BTC should be presented
+
+                var controller = tester.PayTester.GetController<InvoiceController>(null);
+                var checkout = (Models.InvoicingModels.PaymentModel)((JsonResult)controller.GetStatus(invoice.Id, null).GetAwaiter().GetResult()).Value;
+                Assert.Single(checkout.AvailableCryptos);
+                Assert.Equal("LTC", checkout.CryptoCode);
+
+                //////////////////////
+
+                // Despite it is called BitcoinAddress it should be LTC because BTC is not available
+                Assert.Null(invoice.BitcoinAddress);
+                Assert.NotEqual(1.0, invoice.Rate);
+                Assert.NotEqual(invoice.BtcDue, invoice.CryptoInfo[0].Due); // Should be BTC rate
+                cashCow.SendToAddress(invoiceAddress, invoice.CryptoInfo[0].Due);
+
+                Eventually(() =>
+                {
+                    invoice = user.BitPay.GetInvoice(invoice.Id);
+                    Assert.Equal("paid", invoice.Status);
+                    checkout = (Models.InvoicingModels.PaymentModel)((JsonResult)controller.GetStatus(invoice.Id, null).GetAwaiter().GetResult()).Value;
+                    Assert.Equal("paid", checkout.Status);
+                });
+
+            }
+        }
+
         [Fact]
         public void CanPayWithTwoCurrencies()
         {
@@ -645,6 +751,10 @@ namespace BTCPayServer.Tests
             var b = cached.GetRateAsync("JPY").GetAwaiter().GetResult();
             //Manually check that cache get hit after 10 sec
             var c = cached.GetRateAsync("JPY").GetAwaiter().GetResult();
+
+            var bitstamp = new CoinAverageRateProvider("BTC") { Exchange = "bitstamp" };
+            var bitstampRate = bitstamp.GetRateAsync("USD").GetAwaiter().GetResult();
+            Assert.Throws<RateUnavailableException>(() => bitstamp.GetRateAsync("XXXXX").GetAwaiter().GetResult());
         }
 
         private static bool IsMapped(Invoice invoice, ApplicationDbContext ctx)

BTCPayServer.Tests/docker-compose.yml

@@ -37,7 +37,7 @@ services:
       - postgres
 
   nbxplorer:
-    image: nicolasdorier/nbxplorer:1.0.0.60
+    image: nicolasdorier/nbxplorer:1.0.1.3
     ports:
       - "32838:32838"
     expose: 

BTCPayServer/BTCPayNetworkProvider.Bitcoin.cs

@@ -20,7 +20,7 @@ namespace BTCPayServer
             Add(new BTCPayNetwork()
             {
                 CryptoCode = nbxplorerNetwork.CryptoCode,
-                BlockExplorerLink = "https://testnet.smartbit.com.au/tx/{0}",
+                BlockExplorerLink = NBXplorerNetworkProvider.ChainType == ChainType.Main? "https://www.smartbit.com.au/tx/{0}" : "https://testnet.smartbit.com.au/tx/{0}",
                 NBitcoinNetwork = nbxplorerNetwork.NBitcoinNetwork,
                 NBXplorerNetwork = nbxplorerNetwork,
                 UriScheme = "bitcoin",

BTCPayServer/BTCPayNetworkProvider.Litecoin.cs

@@ -18,7 +18,7 @@ namespace BTCPayServer
             Add(new BTCPayNetwork()
             {
                 CryptoCode = nbxplorerNetwork.CryptoCode,
-                BlockExplorerLink = "https://live.blockcypher.com/ltc/tx/{0}/",
+                BlockExplorerLink = NBXplorerNetworkProvider.ChainType == ChainType.Main ? "https://live.blockcypher.com/ltc/tx/{0}/" : "http://explorer.litecointools.com/tx/{0}",
                 NBitcoinNetwork = nbxplorerNetwork.NBitcoinNetwork,
                 NBXplorerNetwork = nbxplorerNetwork,
                 UriScheme = "litecoin",

BTCPayServer/BTCPayServer.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp2.0</TargetFramework>
-		<Version>1.0.0.73</Version>
+		<Version>1.0.1.14</Version>
   </PropertyGroup>
   <ItemGroup>
     <Compile Remove="Build\dockerfiles\**" />
@@ -21,22 +21,22 @@
     <PackageReference Include="Hangfire.MemoryStorage" Version="1.5.2" />
     <PackageReference Include="Hangfire.PostgreSql" Version="1.4.8.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Filter" Version="1.1.2" />
-    <PackageReference Include="NBitcoin" Version="4.0.0.51" />
+    <PackageReference Include="NBitcoin" Version="4.0.0.52" />
     <PackageReference Include="NBitpayClient" Version="1.0.0.16" />	  
     <PackageReference Include="DBreeze" Version="1.87.0" />
-    <PackageReference Include="NBXplorer.Client" Version="1.0.0.33" />
+    <PackageReference Include="NBXplorer.Client" Version="1.0.1.2" />
     <PackageReference Include="NicolasDorier.CommandLine" Version="1.0.0.1" />
     <PackageReference Include="NicolasDorier.CommandLine.Configuration" Version="1.0.0.2" />
     <PackageReference Include="NicolasDorier.StandardConfiguration" Version="1.0.0.13" />
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="2.0.0" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="2.0.1" />
     <PackageReference Include="System.ValueTuple" Version="4.4.0" />
     <PackageReference Include="System.Xml.XmlSerializer" Version="4.0.11" />
   </ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.3" />
+		<PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.5" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.1" PrivateAssets="All" />
-		<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.0.1" PrivateAssets="All" />
+		<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.0.2" PrivateAssets="All" />
 	</ItemGroup>
 
 	<ItemGroup>

BTCPayServer/Controllers/AccountController.cs

@@ -15,6 +15,7 @@ using BTCPayServer.Models.AccountViewModels;
 using BTCPayServer.Services;
 using BTCPayServer.Services.Mails;
 using BTCPayServer.Services.Stores;
+using BTCPayServer.Logging;
 
 namespace BTCPayServer.Controllers
 {
@@ -25,10 +26,10 @@ namespace BTCPayServer.Controllers
         private readonly UserManager<ApplicationUser> _userManager;
         private readonly SignInManager<ApplicationUser> _signInManager;
         private readonly IEmailSender _emailSender;
-        private readonly ILogger _logger;
         StoreRepository storeRepository;
         RoleManager<IdentityRole> _RoleManager;
         SettingsRepository _SettingsRepository;
+        ILogger _logger;
 
         public AccountController(
             UserManager<ApplicationUser> userManager,
@@ -36,16 +37,15 @@ namespace BTCPayServer.Controllers
             StoreRepository storeRepository,
             SignInManager<ApplicationUser> signInManager,
             IEmailSender emailSender,
-            SettingsRepository settingsRepository,
-            ILogger<AccountController> logger)
+            SettingsRepository settingsRepository)
         {
             this.storeRepository = storeRepository;
             _userManager = userManager;
             _signInManager = signInManager;
             _emailSender = emailSender;
-            _logger = logger;
             _RoleManager = roleManager;
             _SettingsRepository = settingsRepository;
+            _logger = Logs.PayServer;
         }
 
         [TempData]
@@ -259,12 +259,10 @@ namespace BTCPayServer.Controllers
                 var result = await _userManager.CreateAsync(user, model.Password);
                 if (result.Succeeded)
                 {
-                    _logger.LogInformation("User created a new account with password.");
-
                     var admin = await _userManager.GetUsersInRoleAsync(Roles.ServerAdmin);
+                    Logs.PayServer.LogInformation($"A new user just registered {user.Email} {(admin.Count == 0 ? "(admin)" : "")}");
                     if (admin.Count == 0)
                     {
-                        _logger.LogInformation("Admin created.");
                         await _RoleManager.CreateAsync(new IdentityRole(Roles.ServerAdmin));
                         await _userManager.AddToRoleAsync(user, Roles.ServerAdmin);
                     }
@@ -291,7 +289,7 @@ namespace BTCPayServer.Controllers
             return View(model);
         }
 
-        /// <summary>
+        /// <summary> 
         /// Test property
         /// </summary>
         public string RegisteredUserId

BTCPayServer/Controllers/InvoiceController.UI.cs

@@ -33,7 +33,8 @@ namespace BTCPayServer.Controllers
             {
                 UserId = GetUserId(),
                 InvoiceId = invoiceId,
-                IncludeAddresses = true
+                IncludeAddresses = true,
+                IncludeEvents = true
             })).FirstOrDefault();
             if (invoice == null)
                 return NotFound();
@@ -47,6 +48,7 @@ namespace BTCPayServer.Controllers
                 StoreLink = Url.Action(nameof(StoresController.UpdateStore), "Stores", new { storeId = store.Id }),
                 Id = invoice.Id,
                 Status = invoice.Status,
+                TransactionSpeed = invoice.SpeedPolicy == SpeedPolicy.HighSpeed ? "high" : invoice.SpeedPolicy == SpeedPolicy.MediumSpeed ? "medium" : "low",
                 RefundEmail = invoice.RefundMail,
                 CreatedDate = invoice.InvoiceTime,
                 ExpirationDate = invoice.ExpirationTime,
@@ -55,8 +57,10 @@ namespace BTCPayServer.Controllers
                 BuyerInformation = invoice.BuyerInformation,
                 Fiat = FormatCurrency((decimal)dto.Price, dto.Currency),
                 NotificationUrl = invoice.NotificationURL,
+                RedirectUrl = invoice.RedirectURL,
                 ProductInformation = invoice.ProductInformation,
-                StatusException = invoice.ExceptionStatus
+                StatusException = invoice.ExceptionStatus,
+                Events = invoice.Events
             };
 
             foreach (var data in invoice.GetCryptoData(null))
@@ -234,8 +238,7 @@ namespace BTCPayServer.Controllers
             try
             {
                 leases.Add(_EventAggregator.Subscribe<Events.InvoiceDataChangedEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId)));
-                leases.Add(_EventAggregator.Subscribe<Events.InvoicePaymentEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId)));
-                leases.Add(_EventAggregator.Subscribe<Events.InvoiceStatusChangedEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId)));
+                leases.Add(_EventAggregator.Subscribe<Events.InvoiceEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId)));
                 while (true)
                 {
                     var message = await webSocket.ReceiveAsync(DummyBuffer, default(CancellationToken));
@@ -411,6 +414,7 @@ namespace BTCPayServer.Controllers
         public async Task<IActionResult> InvalidatePaidInvoice(string invoiceId)
         {
             await _InvoiceRepository.UpdatePaidInvoiceToInvalid(invoiceId);
+            _EventAggregator.Publish(new InvoiceEvent(invoiceId, 1008, "invoice_markedInvalid"));
             return RedirectToAction(nameof(ListInvoices));
         }
 

BTCPayServer/Controllers/InvoiceController.cs

@@ -78,11 +78,11 @@ namespace BTCPayServer.Controllers
         }
 
 
-        internal async Task<DataWrapper<InvoiceResponse>> CreateInvoiceCore(Invoice invoice, StoreData store, string serverUrl, double expiryMinutes = 15)
+        internal async Task<DataWrapper<InvoiceResponse>> CreateInvoiceCore(Invoice invoice, StoreData store, string serverUrl)
         {
-            var derivationStrategies = store.GetDerivationStrategies(_NetworkProvider).ToList();
+            var derivationStrategies = store.GetDerivationStrategies(_NetworkProvider).Where(c => _ExplorerClients.IsAvailable(c.Network.CryptoCode)).ToList();
             if (derivationStrategies.Count == 0)
-                throw new BitpayHttpException(400, "This store has not configured the derivation strategy");
+                throw new BitpayHttpException(400, "No derivation strategy are available now for this store");
             var entity = new InvoiceEntity
             {
                 InvoiceTime = DateTimeOffset.UtcNow
@@ -94,7 +94,7 @@ namespace BTCPayServer.Controllers
             if (notificationUri == null || (notificationUri.Scheme != "http" && notificationUri.Scheme != "https")) //TODO: Filer non routable addresses ?
                 notificationUri = null;
             EmailAddressAttribute emailValidator = new EmailAddressAttribute();
-            entity.ExpirationTime = entity.InvoiceTime.AddMinutes(expiryMinutes);
+            entity.ExpirationTime = entity.InvoiceTime.AddMinutes(storeBlob.InvoiceExpiration);
             entity.MonitoringExpiration = entity.ExpirationTime + TimeSpan.FromMinutes(storeBlob.MonitoringExpiration);
             entity.OrderId = invoice.OrderId;
             entity.ServerUrl = serverUrl;
@@ -130,7 +130,7 @@ namespace BTCPayServer.Controllers
                         {
                             network = _.Network,
                             getFeeRate = _.FeeRateProvider.GetFeeRateAsync(),
-                            getRate = _.RateProvider.GetRateAsync(invoice.Currency),
+                            getRate = storeBlob.ApplyRateRules(_.Network, _.RateProvider).GetRateAsync(invoice.Currency),
                             getAddress = _.Wallet.ReserveAddressAsync(_.DerivationStrategy)
                         };
                     });
@@ -164,23 +164,21 @@ namespace BTCPayServer.Controllers
 #pragma warning disable CS0618
                 var btc = _NetworkProvider.BTC;
                 var feeProvider = _FeeProviderFactory.CreateFeeProvider(btc);
-                var rateProvider = _RateProviders.GetRateProvider(btc);
+                var rateProvider = storeBlob.ApplyRateRules(btc, _RateProviders.GetRateProvider(btc));
                 if (feeProvider != null && rateProvider != null)
                 {
                     var gettingFee = feeProvider.GetFeeRateAsync();
-                    var gettingRate = rateProvider.GetRateAsync("BTC");
+                    var gettingRate = rateProvider.GetRateAsync(invoice.Currency);
                     entity.TxFee = GetTxFee(storeBlob, await gettingFee);
                     entity.Rate = await gettingRate;
                 }
-                // So users does not crash if they check depositAddress is not set
-                entity.DepositAddress = cryptoDatas.First().Value.DepositAddress;
 #pragma warning restore CS0618
             }
 
             entity.SetCryptoData(cryptoDatas);
             entity.PosData = invoice.PosData;
             entity = await _InvoiceRepository.CreateInvoiceAsync(store.Id, entity, _NetworkProvider);
-            _EventAggregator.Publish(new Events.InvoiceCreatedEvent(entity.Id));
+            _EventAggregator.Publish(new Events.InvoiceEvent(entity, 1001, "invoice_created"));
             var resp = entity.EntityToDTO(_NetworkProvider);
             return new DataWrapper<InvoiceResponse>(resp) { Facade = "pos/invoice" };
         }

BTCPayServer/Controllers/ManageController.cs

@@ -33,7 +33,6 @@ namespace BTCPayServer.Controllers
         private readonly ILogger _logger;
         private readonly UrlEncoder _urlEncoder;
         TokenRepository _TokenRepository;
-        private readonly BTCPayWallet _Wallet;
         IHostingEnvironment _Env;
         StoreRepository _StoreRepository;
 
@@ -47,7 +46,7 @@ namespace BTCPayServer.Controllers
           ILogger<ManageController> logger,
           UrlEncoder urlEncoder,
           TokenRepository tokenRepository,
-          BTCPayWallet wallet,
+          BTCPayWalletProvider walletProvider,
           StoreRepository storeRepository,
           IHostingEnvironment env)
         {
@@ -57,7 +56,6 @@ namespace BTCPayServer.Controllers
             _logger = logger;
             _urlEncoder = urlEncoder;
             _TokenRepository = tokenRepository;
-            _Wallet = wallet;
             _Env = env;
             _StoreRepository = storeRepository;
         }

BTCPayServer/Controllers/StoresController.cs

@@ -17,6 +17,7 @@ using NBXplorer.DerivationStrategy;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net.Http;
 using System.Threading.Tasks;
 
 namespace BTCPayServer.Controllers
@@ -95,7 +96,7 @@ namespace BTCPayServer.Controllers
             var stores = await _Repo.GetStoresByUserId(GetUserId());
             var balances = stores
                                 .Select(s => s.GetDerivationStrategies(_NetworkProvider)
-                                              .Select(d => (Wallet: _WalletProvider.GetWallet(d.Network), 
+                                              .Select(d => (Wallet: _WalletProvider.GetWallet(d.Network),
                                                             DerivationStrategy: d.DerivationStrategyBase))
                                               .Where(_ => _.Wallet != null)
                                               .Select(async _ => (await _.Wallet.GetBalance(_.DerivationStrategy)).ToString() + " " + _.Wallet.Network.CryptoCode))
@@ -163,6 +164,9 @@ namespace BTCPayServer.Controllers
             AddDerivationSchemes(store, vm);
             vm.StatusMessage = StatusMessage;
             vm.MonitoringExpiration = storeBlob.MonitoringExpiration;
+            vm.InvoiceExpiration = storeBlob.InvoiceExpiration;
+            vm.RateMultiplier = (double)storeBlob.GetRateMultiplier();
+            vm.PreferredExchange = storeBlob.PreferredExchange.IsCoinAverage() ? "coinaverage" : storeBlob.PreferredExchange;
             return View(vm);
         }
 
@@ -306,12 +310,31 @@ namespace BTCPayServer.Controllers
             var blob = store.GetStoreBlob();
             blob.NetworkFeeDisabled = !model.NetworkFee;
             blob.MonitoringExpiration = model.MonitoringExpiration;
+            blob.InvoiceExpiration = model.InvoiceExpiration;
+
+            bool newExchange = blob.PreferredExchange != model.PreferredExchange;
+            blob.PreferredExchange = model.PreferredExchange;
+
+            blob.SetRateMultiplier(model.RateMultiplier);
 
             if (store.SetStoreBlob(blob))
             {
                 needUpdate = true;
             }
 
+            if (!blob.PreferredExchange.IsCoinAverage() && newExchange)
+            {
+                using (HttpClient client = new HttpClient())
+                {
+                    var rate = await client.GetAsync(model.RateSource);
+                    if (rate.StatusCode == System.Net.HttpStatusCode.NotFound)
+                    {
+                        ModelState.AddModelError(nameof(model.PreferredExchange), $"Unsupported exchange ({model.RateSource})");
+                        return View(model);
+                    }
+                }
+            }
+
             if (needUpdate)
             {
                 await _Repo.UpdateStore(store);
@@ -346,7 +369,7 @@ namespace BTCPayServer.Controllers
                 var prefix = Utils.ToUInt32(data, false);
                 if (!electrumMapping.TryGetValue(prefix, out string[] labels))
                     throw new FormatException("!electrumMapping.TryGetValue(prefix, out string[] labels)");
-                var standardPrefix = Utils.ToBytes(network.NBitcoinNetwork == Network.Main ? 0x0488b21eU : 0x043587cf, false);
+                var standardPrefix = Utils.ToBytes(network.NBXplorerNetwork.DefaultSettings.ChainType == NBXplorer.ChainType.Main ? 0x0488b21eU : 0x043587cf, false);
 
                 for (int i = 0; i < 4; i++)
                     data[i] = standardPrefix[i];

BTCPayServer/Data/ApplicationDbContext.cs

@@ -26,6 +26,11 @@ namespace BTCPayServer.Data
             get; set;
         }
 
+        public DbSet<InvoiceEventData> InvoiceEvents
+        {
+            get; set;
+        }
+
         public DbSet<HistoricalAddressInvoiceData> HistoricalAddressInvoices
         {
             get; set;
@@ -132,6 +137,15 @@ namespace BTCPayServer.Data
                     o.InvoiceDataId,
 #pragma warning disable CS0618
                     o.Address
+#pragma warning restore CS0618
+                });
+
+            builder.Entity<InvoiceEventData>()
+                .HasKey(o => new
+                {
+                    o.InvoiceDataId,
+#pragma warning disable CS0618
+                    o.UniqueId
 #pragma warning restore CS0618
                 });
         }

BTCPayServer/Data/InvoiceData.cs

@@ -32,6 +32,11 @@ namespace BTCPayServer.Data
             get; set;
         }
 
+        public List<InvoiceEventData> Events
+        {
+            get; set;
+        }
+
         public List<RefundAddressesData> RefundAddresses
         {
             get; set;

BTCPayServer/Data/InvoiceEventData.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Data
+{
+    public class InvoiceEventData
+    {
+        public string InvoiceDataId
+        {
+            get; set;
+        }
+        public string UniqueId { get; internal set; }
+        public DateTimeOffset Timestamp
+        {
+            get; set;
+        }
+
+        public string Message { get; set; }
+    }
+}

BTCPayServer/Data/StoreData.cs

@@ -11,6 +11,7 @@ using System.Threading.Tasks;
 using System.ComponentModel;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
+using BTCPayServer.Services.Rates;
 
 namespace BTCPayServer.Data
 {
@@ -99,10 +100,10 @@ namespace BTCPayServer.Data
 
             if (!existing && string.IsNullOrEmpty(derivationScheme))
             {
-                if(network.IsBTC)
+                if (network.IsBTC)
                     DerivationStrategy = null;
             }
-            else if(!existing)
+            else if (!existing)
                 strategies.Add(new JProperty(network.CryptoCode, new JValue(derivationScheme)));
             // This is deprecated so we don't have to set anymore
             //if (network.IsBTC)
@@ -173,10 +174,27 @@ namespace BTCPayServer.Data
         }
     }
 
+    public class RateRule
+    {
+        public RateRule()
+        {
+            RuleName = "Multiplier";
+        }
+        public string RuleName { get; set; }
+
+        public double Multiplier { get; set; }
+
+        public decimal Apply(BTCPayNetwork network, decimal rate)
+        {
+            return rate * (decimal)Multiplier;
+        }
+    }
+
     public class StoreBlob
     {
         public StoreBlob()
         {
+            InvoiceExpiration = 15;
             MonitoringExpiration = 60;
         }
         public bool NetworkFeeDisabled
@@ -190,5 +208,59 @@ namespace BTCPayServer.Data
             get;
             set;
         }
+
+        [DefaultValue(15)]
+        [JsonProperty(DefaultValueHandling = DefaultValueHandling.Populate)]
+        public int InvoiceExpiration
+        {
+            get;
+            set;
+        }
+
+        public void SetRateMultiplier(double rate)
+        {
+            RateRules = new List<RateRule>();
+            RateRules.Add(new RateRule() { Multiplier = rate });
+        }
+        public decimal GetRateMultiplier()
+        {
+            decimal rate = 1.0m;
+            if (RateRules == null || RateRules.Count == 0)
+                return rate;
+            foreach (var rule in RateRules)
+            {
+                rate = rule.Apply(null, rate);
+            }
+            return rate;
+        }
+
+        public List<RateRule> RateRules { get; set; } = new List<RateRule>();
+        public string PreferredExchange { get; set; }
+
+        public IRateProvider ApplyRateRules(BTCPayNetwork network, IRateProvider rateProvider)
+        {
+            if (!PreferredExchange.IsCoinAverage())
+            {
+                // If the original rateProvider is a cache, use the same inner provider as fallback, and same memory cache to wrap it all
+                if (rateProvider is CachedRateProvider cachedRateProvider)
+                {
+                    rateProvider = new FallbackRateProvider(new IRateProvider[] {
+                        new CoinAverageRateProvider(network.CryptoCode) { Exchange = PreferredExchange },
+                        cachedRateProvider.Inner
+                    });
+                    rateProvider = new CachedRateProvider(network.CryptoCode, rateProvider, cachedRateProvider.MemoryCache);
+                }
+                else
+                {
+                    rateProvider = new FallbackRateProvider(new IRateProvider[] {
+                        new CoinAverageRateProvider(network.CryptoCode) { Exchange = PreferredExchange },
+                        rateProvider
+                    });
+                }
+            }
+            if (RateRules == null || RateRules.Count == 0)
+                return rateProvider;
+            return new TweakRateProvider(network, rateProvider, RateRules.ToList());
+        }
     }
 }

BTCPayServer/Events/InvoiceDataChangedEvent.cs

@@ -8,10 +8,19 @@ namespace BTCPayServer.Events
     public class InvoiceDataChangedEvent
     {
         public string InvoiceId { get; set; }
+        public string Status { get; internal set; }
+        public string ExceptionStatus { get; internal set; }
 
         public override string ToString()
         {
-            return $"Invoice {InvoiceId} data changed";
+            if (string.IsNullOrEmpty(ExceptionStatus) || ExceptionStatus == "false")
+            { 
+                return $"Invoice status is {Status}";
+            }
+            else
+            {
+                return $"Invoice status is {Status} (Exception status: {ExceptionStatus})";
+            }
         }
     }
 }

BTCPayServer/Events/InvoiceEvent.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Services.Invoices;
+
+namespace BTCPayServer.Events
+{
+    public class InvoiceEvent
+    {
+        public InvoiceEvent(InvoiceEntity invoice, int code, string name) : this(invoice.Id, code, name)
+        {
+
+        }
+        public InvoiceEvent(string invoiceId, int code, string name)
+        {
+            InvoiceId = invoiceId;
+            EventCode = code;
+            Name = name;
+        }
+
+        public string InvoiceId { get; set; }
+        public int EventCode { get; set; }
+        public string Name { get; set; }
+
+        public override string ToString()
+        {
+            return $"Invoice {InvoiceId} new event: {Name} ({EventCode})";
+        }
+    }
+}

BTCPayServer/Events/InvoiceIPNEvent.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Events
+{
+    public class InvoiceIPNEvent
+    {
+        public InvoiceIPNEvent(string invoiceId, int? eventCode, string name)
+        {
+            InvoiceId = invoiceId;
+            EventCode = eventCode;
+            Name = name;
+        }
+
+        public int? EventCode { get; set; }
+        public string Name { get; set; }
+
+        public string InvoiceId { get; set; }
+        public string Error { get; set; }
+
+        public override string ToString()
+        {
+            string ipnType = "IPN";
+            if(EventCode.HasValue)
+            {
+                ipnType = $"IPN ({EventCode.Value} {Name})";
+            }
+            if (Error == null)
+                return $"{ipnType} sent for invoice {InvoiceId}";
+            return $"Error while sending {ipnType}: {Error}";
+        }
+    }
+}

BTCPayServer/Events/InvoicePaymentEvent.cs

@@ -1,24 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using BTCPayServer.Services.Invoices;
-
-namespace BTCPayServer.Events
-{
-    public class InvoicePaymentEvent
-    {
-        
-        public InvoicePaymentEvent(string invoiceId)
-        {
-            InvoiceId = invoiceId;
-        }
-
-        public string InvoiceId { get; set; }
-
-        public override string ToString()
-        {
-            return $"Invoice {InvoiceId} received a payment";
-        }
-    }
-}

BTCPayServer/Events/InvoiceStatusChangedEvent.cs

@@ -1,30 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using BTCPayServer.Services.Invoices;
-
-namespace BTCPayServer.Events
-{
-    public class InvoiceStatusChangedEvent
-    {
-        public InvoiceStatusChangedEvent()
-        {
-
-        }
-        public InvoiceStatusChangedEvent(InvoiceEntity invoice, string newState)
-        {
-            OldState = invoice.Status;
-            InvoiceId = invoice.Id;
-            NewState = newState;
-        }
-        public string InvoiceId { get; set; }
-        public string OldState { get; set; }
-        public string NewState { get; set; }
-
-        public override string ToString()
-        {
-            return $"Invoice {InvoiceId} changed status: {OldState} => {NewState}";
-        }
-    }
-}

BTCPayServer/Events/InvoiceStopWatchedEvent.cs

@@ -5,18 +5,12 @@ using System.Threading.Tasks;
 
 namespace BTCPayServer.Events
 {
-    public class InvoiceCreatedEvent
+    public class InvoiceStopWatchedEvent
     {
-        public InvoiceCreatedEvent(string id)
-        {
-            InvoiceId = id;
-        }
-
         public string InvoiceId { get; set; }
-
         public override string ToString()
         {
-            return $"Invoice {InvoiceId} created";
+            return $"Invoice {InvoiceId} is not monitored anymore.";
         }
     }
 }

BTCPayServer/ExplorerClientProvider.cs

@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 using BTCPayServer.Configuration;
 using BTCPayServer.Logging;
 using NBXplorer;
+using BTCPayServer.HostedServices;
 
 namespace BTCPayServer
 {
@@ -15,9 +16,10 @@ namespace BTCPayServer
         BTCPayServerOptions _Options;
 
         public BTCPayNetworkProvider NetworkProviders => _NetworkProviders;
-
-        public ExplorerClientProvider(BTCPayNetworkProvider networkProviders, BTCPayServerOptions options)
+        NBXplorerDashboard _Dashboard;
+        public ExplorerClientProvider(BTCPayNetworkProvider networkProviders, BTCPayServerOptions options, NBXplorerDashboard dashboard)
         {
+            _Dashboard = dashboard;
             _NetworkProviders = networkProviders;
             _Options = options;
 
@@ -38,11 +40,15 @@ namespace BTCPayServer
         private static ExplorerClient CreateExplorerClient(BTCPayNetwork n, Uri uri, string cookieFile)
         {
             var explorer = new ExplorerClient(n.NBXplorerNetwork, uri);
-            if (cookieFile == null || !explorer.SetCookieAuth(cookieFile))
+            if (cookieFile == null)
             {
                 Logs.Configuration.LogWarning($"{n.CryptoCode}: Not using cookie authentication");
                 explorer.SetNoAuth();
             }
+            if(!explorer.SetCookieAuth(cookieFile))
+            {
+                Logs.Configuration.LogWarning($"{n.CryptoCode}: Using cookie auth against NBXplorer, but {cookieFile} is not found");
+            }
             return explorer;
         }
 
@@ -64,6 +70,16 @@ namespace BTCPayServer
             return GetExplorerClient(network.CryptoCode);
         }
 
+        public bool IsAvailable(BTCPayNetwork network)
+        {
+            return IsAvailable(network.CryptoCode);
+        }
+
+        public bool IsAvailable(string cryptoCode)
+        {
+            return _Clients.ContainsKey(cryptoCode) && _Dashboard.IsFullySynched(cryptoCode);
+        }
+
         public BTCPayNetwork GetNetwork(string cryptoCode)
         {
             var network = _NetworkProviders.GetNetwork(cryptoCode);

BTCPayServer/Extensions.cs

@@ -19,6 +19,8 @@ using System.Linq;
 using System.Threading;
 using BTCPayServer.Services.Wallets;
 using System.IO;
+using BTCPayServer.Logging;
+using Microsoft.Extensions.Logging;
 
 namespace BTCPayServer
 {
@@ -29,6 +31,12 @@ namespace BTCPayServer
             return activeProvider != "Microsoft.EntityFrameworkCore.Sqlite";
         }
 
+        public static bool IsCoinAverage(this string exchangeName)
+        {
+            string[] coinAverages = new[] { "coinaverage", "bitcoinaverage" };
+            return String.IsNullOrWhiteSpace(exchangeName) ? true : coinAverages.Contains(exchangeName, StringComparer.OrdinalIgnoreCase) ? true : false;
+        }
+
         public static async Task<Dictionary<uint256, TransactionResult>> GetTransactions(this BTCPayWallet client, uint256[] hashes, CancellationToken cts = default(CancellationToken))
         {
             hashes = hashes.Distinct().ToArray();

BTCPayServer/HostedServices/InvoiceNotificationManager.cs

@@ -37,6 +37,9 @@ namespace BTCPayServer.HostedServices
             {
                 get; set;
             }
+
+            public int? EventCode { get; set; }
+            public string Message { get; set; }
         }
 
         public ILogger Logger
@@ -63,18 +66,32 @@ namespace BTCPayServer.HostedServices
             _NetworkProvider = networkProvider;
         }
 
-        async Task Notify(InvoiceEntity invoice)
+        async Task Notify(InvoiceEntity invoice, int? eventCode = null, string name = null)
         {
             CancellationTokenSource cts = new CancellationTokenSource(10000);
             try
             {
-                await SendNotification(invoice, cts.Token);
+                if (string.IsNullOrEmpty(invoice.NotificationURL))
+                    return;
+                _EventAggregator.Publish<InvoiceIPNEvent>(new InvoiceIPNEvent(invoice.Id, eventCode, name));
+                await SendNotification(invoice, eventCode, name, cts.Token);
                 return;
             }
-            catch // It fails, it is OK because we try with hangfire after
+            catch (OperationCanceledException) when (cts.IsCancellationRequested)
             {
+                _EventAggregator.Publish<InvoiceIPNEvent>(new InvoiceIPNEvent(invoice.Id, eventCode, name)
+                {
+                    Error = "Timeout"
+                });
             }
-            var invoiceStr = NBitcoin.JsonConverters.Serializer.ToString(new ScheduledJob() { TryCount = 0, Invoice = invoice });
+            catch (Exception ex) // It fails, it is OK because we try with hangfire after
+            {
+                _EventAggregator.Publish<InvoiceIPNEvent>(new InvoiceIPNEvent(invoice.Id, eventCode, name)
+                {
+                    Error = ex.Message
+                });
+            }
+            var invoiceStr = NBitcoin.JsonConverters.Serializer.ToString(new ScheduledJob() { TryCount = 0, Invoice = invoice, EventCode = eventCode, Message = name });
             if (!string.IsNullOrEmpty(invoice.NotificationURL))
                 _JobClient.Schedule(() => NotifyHttp(invoiceStr), TimeSpan.Zero);
         }
@@ -93,14 +110,45 @@ namespace BTCPayServer.HostedServices
             CancellationTokenSource cts = new CancellationTokenSource(10000);
             try
             {
-                HttpResponseMessage response = await SendNotification(job.Invoice, cts.Token);
+                HttpResponseMessage response = await SendNotification(job.Invoice, job.EventCode, job.Message, cts.Token);
                 reschedule = response.StatusCode != System.Net.HttpStatusCode.OK;
                 Logger.LogInformation("Job " + jobId + " returned " + response.StatusCode);
+
+                _EventAggregator.Publish<InvoiceIPNEvent>(new InvoiceIPNEvent(job.Invoice.Id, job.EventCode, job.Message)
+                {
+                    Error = reschedule ? $"Unexpected return code: {(int)response.StatusCode}" : null
+                });
             }
-            catch (Exception ex)
+            catch (OperationCanceledException) when (cts.IsCancellationRequested)
             {
+                _EventAggregator.Publish<InvoiceIPNEvent>(new InvoiceIPNEvent(job.Invoice.Id, job.EventCode, job.Message)
+                {
+                    Error = "Timeout"
+                });
                 reschedule = true;
-                Logger.LogInformation("Job " + jobId + " threw exception " + ex.Message);
+                Logger.LogInformation("Job " + jobId + " timed out");
+            }
+            catch (Exception ex) // It fails, it is OK because we try with hangfire after
+            {
+                _EventAggregator.Publish<InvoiceIPNEvent>(new InvoiceIPNEvent(job.Invoice.Id, job.EventCode, job.Message)
+                {
+                    Error = ex.Message
+                });
+                reschedule = true;
+
+                List<string> messages = new List<string>();
+                while(ex != null)
+                {
+                    messages.Add(ex.Message);
+                    ex = ex.InnerException;
+                }
+                string message = String.Join(',', messages.ToArray());
+                Logger.LogInformation("Job " + jobId + " threw exception " + message);
+
+                _EventAggregator.Publish<InvoiceIPNEvent>(new InvoiceIPNEvent(job.Invoice.Id, job.EventCode, job.Message)
+                {
+                    Error = $"Unexpected error: {message}"
+                });
             }
             finally { cts.Dispose(); _Executing.TryRemove(jobId, out jobId); }
 
@@ -115,8 +163,23 @@ namespace BTCPayServer.HostedServices
             }
         }
 
+        public class InvoicePaymentNotificationEvent
+        {
+            [JsonProperty("code")]
+            public int Code { get; set; }
+            [JsonProperty("name")]
+            public string Name { get; set; }
+        }
+        public class InvoicePaymentNotificationEventWrapper
+        {
+            [JsonProperty("event")]
+            public InvoicePaymentNotificationEvent Event { get; set; }
+            [JsonProperty("data")]
+            public InvoicePaymentNotification Data { get; set; }
+        }
+
         Encoding UTF8 = new UTF8Encoding(false);
-        private async Task<HttpResponseMessage> SendNotification(InvoiceEntity invoice, CancellationToken cancellation)
+        private async Task<HttpResponseMessage> SendNotification(InvoiceEntity invoice, int? eventCode, string name, CancellationToken cancellation)
         {
             var request = new HttpRequestMessage();
             request.Method = HttpMethod.Post;
@@ -139,7 +202,7 @@ namespace BTCPayServer.HostedServices
             // We keep backward compatibility with bitpay by passing BTC info to the notification
             // we don't pass other info, as it is a bad idea to use IPN data for logic processing (can be faked)
             var btcCryptoInfo = dto.CryptoInfo.FirstOrDefault(c => c.CryptoCode == "BTC");
-            if(btcCryptoInfo != null)
+            if (btcCryptoInfo != null)
             {
 #pragma warning disable CS0618
                 notification.Rate = (double)dto.Rate;
@@ -149,8 +212,22 @@ namespace BTCPayServer.HostedServices
                 notification.BTCPrice = dto.BTCPrice;
 #pragma warning restore CS0618
             }
+
+            string notificationString = null;
+            if (eventCode.HasValue)
+            {
+                var wrapper = new InvoicePaymentNotificationEventWrapper();
+                wrapper.Data = notification;
+                wrapper.Event = new InvoicePaymentNotificationEvent() { Code = eventCode.Value, Name = name };
+                notificationString = JsonConvert.SerializeObject(wrapper);
+            }
+            else
+            {
+                notificationString = JsonConvert.SerializeObject(notification);
+            }
+
             request.RequestUri = new Uri(invoice.NotificationURL, UriKind.Absolute);
-            request.Content = new StringContent(JsonConvert.SerializeObject(notification), UTF8, "application/json");
+            request.Content = new StringContent(notificationString, UTF8, "application/json");
             var response = await _Client.SendAsync(request, cancellation);
             return response;
         }
@@ -165,29 +242,60 @@ namespace BTCPayServer.HostedServices
         CompositeDisposable leases = new CompositeDisposable();
         public Task StartAsync(CancellationToken cancellationToken)
         {
-            leases.Add(_EventAggregator.Subscribe<InvoiceStatusChangedEvent>(async e => 
+            leases.Add(_EventAggregator.Subscribe<InvoiceEvent>(async e =>
             {
                 var invoice = await _InvoiceRepository.GetInvoice(null, e.InvoiceId);
+                await SaveEvent(invoice.Id, e);
 
                 // we need to use the status in the event and not in the invoice. The invoice might now be in another status.
                 if (invoice.FullNotifications)
                 {
-                    if (e.NewState == "expired" ||
-                       e.NewState == "paid" ||
-                       e.NewState == "invalid" ||
-                       e.NewState == "complete"
+                    if (e.Name == "invoice_expired" ||
+                       e.Name == "invoice_paidInFull" ||
+                       e.Name == "invoice_failedToConfirm" ||
+                       e.Name == "invoice_markedInvalid" ||
+                       e.Name == "invoice_failedToConfirm" ||
+                       e.Name == "invoice_completed"
                      )
                         await Notify(invoice);
                 }
-                
-                if(e.NewState == "confirmed")
+
+                if (e.Name == "invoice_confirmed")
                 {
                     await Notify(invoice);
                 }
+
+                if (invoice.ExtendedNotifications)
+                {
+                    await Notify(invoice, e.EventCode, e.Name);
+                }
             }));
+
+
+            leases.Add(_EventAggregator.Subscribe<InvoiceDataChangedEvent>(async e =>
+            {
+                await SaveEvent(e.InvoiceId, e);
+            }));
+
+
+            leases.Add(_EventAggregator.Subscribe<InvoiceStopWatchedEvent>(async e =>
+            {
+                await SaveEvent(e.InvoiceId, e);
+            }));
+
+            leases.Add(_EventAggregator.Subscribe<InvoiceIPNEvent>(async e =>
+            {
+                await SaveEvent(e.InvoiceId, e);
+            }));
+
             return Task.CompletedTask;
         }
 
+        private Task SaveEvent(string invoiceId, object evt)
+        {
+            return _InvoiceRepository.AddInvoiceEvent(invoiceId, evt);
+        }
+
         public Task StopAsync(CancellationToken cancellationToken)
         {
             leases.Dispose();

BTCPayServer/HostedServices/InvoiceWatcher.cs

@@ -99,7 +99,7 @@ namespace BTCPayServer.HostedServices
                     if (updateContext.Dirty)
                     {
                         await _InvoiceRepository.UpdateInvoiceStatus(invoice.Id, invoice.Status, invoice.ExceptionStatus).ConfigureAwait(false);
-                        _EventAggregator.Publish(new InvoiceDataChangedEvent() { InvoiceId = invoice.Id });
+                        updateContext.Events.Add(new InvoiceDataChangedEvent() { Status = invoice.Status, ExceptionStatus = invoice.ExceptionStatus, InvoiceId = invoice.Id });
                     }
 
                     var changed = stateBefore != invoice.Status;
@@ -118,7 +118,7 @@ namespace BTCPayServer.HostedServices
                        ((invoice.Status == "invalid" || invoice.Status == "expired") && invoice.MonitoringExpiration < DateTimeOffset.UtcNow))
                     {
                         if (await _InvoiceRepository.RemovePendingInvoice(invoice.Id).ConfigureAwait(false))
-                            Logs.PayServer.LogInformation("Stopped watching invoice " + invoiceId);
+                            _EventAggregator.Publish<InvoiceStopWatchedEvent>(new InvoiceStopWatchedEvent() { InvoiceId = invoice.Id });
                         break;
                     }
 
@@ -146,7 +146,7 @@ namespace BTCPayServer.HostedServices
                 context.MarkDirty();
                 await _InvoiceRepository.UnaffectAddress(invoice.Id);
 
-                context.Events.Add(new InvoiceStatusChangedEvent(invoice, "expired"));
+                context.Events.Add(new InvoiceEvent(invoice, 1004, "invoice_expired"));
                 invoice.Status = "expired";
             }
 
@@ -169,7 +169,7 @@ namespace BTCPayServer.HostedServices
                     invoice.Payments.Add(payment);
 #pragma warning restore CS0618
                     alreadyAccounted.Add(coin.Coin.Outpoint);
-                    context.Events.Add(new InvoicePaymentEvent(invoice.Id));
+                    context.Events.Add(new InvoiceEvent(invoice, 1002, "invoice_receivedPayment"));
                     dirtyAddress = true;
                 }
                 if (dirtyAddress)
@@ -188,15 +188,16 @@ namespace BTCPayServer.HostedServices
                     {
                         if (invoice.Status == "new")
                         {
-                            context.Events.Add(new InvoiceStatusChangedEvent(invoice, "paid"));
+                            context.Events.Add(new InvoiceEvent(invoice, 1003, "invoice_paidInFull"));
                             invoice.Status = "paid";
                             invoice.ExceptionStatus = null;
                             await _InvoiceRepository.UnaffectAddress(invoice.Id);
                             context.MarkDirty();
                         }
-                        else if (invoice.Status == "expired")
+                        else if (invoice.Status == "expired" && invoice.ExceptionStatus != "paidLate")
                         {
                             invoice.ExceptionStatus = "paidLate";
+                            context.Events.Add(new InvoiceEvent(invoice, 1009, "invoice_paidAfterExpiration"));
                             context.MarkDirty();
                         }
                     }
@@ -246,14 +247,14 @@ namespace BTCPayServer.HostedServices
                        (totalConfirmed < accounting.TotalDue))
                     {
                         await _InvoiceRepository.UnaffectAddress(invoice.Id);
-                        context.Events.Add(new InvoiceStatusChangedEvent(invoice, "invalid"));
+                        context.Events.Add(new InvoiceEvent(invoice, 1013, "invoice_failedToConfirm"));
                         invoice.Status = "invalid";
                         context.MarkDirty();
                     }
                     else if (totalConfirmed >= accounting.TotalDue)
                     {
                         await _InvoiceRepository.UnaffectAddress(invoice.Id);
-                        context.Events.Add(new InvoiceStatusChangedEvent(invoice, "confirmed"));
+                        context.Events.Add(new InvoiceEvent(invoice, 1005, "invoice_confirmed"));
                         invoice.Status = "confirmed";
                         context.MarkDirty();
                     }
@@ -266,7 +267,7 @@ namespace BTCPayServer.HostedServices
                     var totalConfirmed = transactions.Select(t => t.Payment.GetValue(cryptoDataAll, cryptoData.CryptoCode)).Sum();
                     if (totalConfirmed >= accounting.TotalDue)
                     {
-                        context.Events.Add(new InvoiceStatusChangedEvent(invoice, "complete"));
+                        context.Events.Add(new InvoiceEvent(invoice, 1006, "invoice_completed"));
                         invoice.Status = "complete";
                         context.MarkDirty();
                     }
@@ -277,7 +278,7 @@ namespace BTCPayServer.HostedServices
         private IEnumerable<Task<NetworkCoins>> GetCoinsPerNetwork(UpdateInvoiceContext context, InvoiceEntity invoice, DerivationStrategy[] strategies)
         {
             return strategies
-                                .Select(d => (Wallet: _WalletProvider.GetWallet(d.Network),
+                                .Select(d => (Wallet: _WalletProvider.IsAvailable(d.Network) ? _WalletProvider.GetWallet(d.Network) : null,
                                               Network: d.Network,
                                               Strategy: d.DerivationStrategyBase))
                                 .Where(d => d.Wallet != null)
@@ -408,11 +409,23 @@ namespace BTCPayServer.HostedServices
             }
         }
 
-        private void Watch(string invoiceId)
+        private async Task Watch(string invoiceId)
         {
             if (invoiceId == null)
                 throw new ArgumentNullException(nameof(invoiceId));
             _WatchRequests.Add(invoiceId);
+            var invoice = await _InvoiceRepository.GetInvoice(null, invoiceId);
+            try
+            {
+                var now = DateTimeOffset.UtcNow;
+                if (invoice.ExpirationTime > now)
+                {
+                    await Task.Delay(invoice.ExpirationTime - now, _Cts.Token);
+                    _WatchRequests.Add(invoiceId);
+                }
+            }
+            catch when (_Cts.IsCancellationRequested)
+            { }
         }
 
         BlockingCollection<string> _WatchRequests = new BlockingCollection<string>(new ConcurrentQueue<string>());
@@ -430,7 +443,13 @@ namespace BTCPayServer.HostedServices
 
             leases.Add(_EventAggregator.Subscribe<Events.NewBlockEvent>(async b => { await NotifyBlock(); }));
             leases.Add(_EventAggregator.Subscribe<Events.TxOutReceivedEvent>(async b => { await NotifyReceived(b.ScriptPubKey, b.Network); }));
-            leases.Add(_EventAggregator.Subscribe<Events.InvoiceCreatedEvent>(b => { Watch(b.InvoiceId); }));
+            leases.Add(_EventAggregator.Subscribe<Events.InvoiceEvent>(async b =>
+            {
+                if (b.Name == "invoice_created")
+                {
+                    await Watch(b.InvoiceId);
+                }
+            }));
 
             return Task.CompletedTask;
         }
@@ -469,19 +488,25 @@ namespace BTCPayServer.HostedServices
             {
                 foreach (var item in _WatchRequests.GetConsumingEnumerable(cancellation))
                 {
+                    bool added = false;
                     var task = executing.GetOrAdd(item, async i =>
                     {
                         try
                         {
+                            added = true;
                             await UpdateInvoice(i, cancellation);
                         }
                         catch (Exception ex) when (!cancellation.IsCancellationRequested)
                         {
-                            Logs.PayServer.LogCritical(ex, $"Error in the InvoiceWatcher loop (Invoice {item})");
-                            await Task.Delay(2000, cancellation);
+                            Logs.PayServer.LogCritical(ex, $"Error in the InvoiceWatcher loop (Invoice {i})");
                         }
-                        finally { executing.TryRemove(item, out Task useless); }
                     });
+
+                    if (!added && task.Status == TaskStatus.RanToCompletion)
+                    {
+                        executing.TryRemove(item, out Task t);
+                        _WatchRequests.Add(item);
+                    }
                 }
             }
             catch when (cancellation.IsCancellationRequested)

BTCPayServer/HostedServices/NBXplorerListener.cs

@@ -87,19 +87,22 @@ namespace BTCPayServer.HostedServices
             }, null, 0, (int)PollInterval.TotalMilliseconds);
             leases.Add(_ListenPoller);
 
-            leases.Add(_Aggregator.Subscribe<Events.InvoiceCreatedEvent>(async inv =>
+            leases.Add(_Aggregator.Subscribe<Events.InvoiceEvent>(async inv =>
             {
-                var invoice = await _InvoiceRepository.GetInvoice(null, inv.InvoiceId);
-                List<Task> listeningDerivations = new List<Task>();
-                foreach (var notificationSessions in _Sessions)
+                if (inv.Name == "invoice_created")
                 {
-                    var derivationStrategy = GetStrategy(notificationSessions.Key, invoice);
-                    if (derivationStrategy != null)
+                    var invoice = await _InvoiceRepository.GetInvoice(null, inv.InvoiceId);
+                    List<Task> listeningDerivations = new List<Task>();
+                    foreach (var notificationSessions in _Sessions)
                     {
-                        listeningDerivations.Add(notificationSessions.Value.ListenDerivationSchemesAsync(new[] { derivationStrategy }, _Cts.Token));
+                        var derivationStrategy = GetStrategy(notificationSessions.Key, invoice);
+                        if (derivationStrategy != null)
+                        {
+                            listeningDerivations.Add(notificationSessions.Value.ListenDerivationSchemesAsync(new[] { derivationStrategy }, _Cts.Token));
+                        }
                     }
+                    await Task.WhenAll(listeningDerivations.ToArray()).ConfigureAwait(false);
                 }
-                await Task.WhenAll(listeningDerivations.ToArray()).ConfigureAwait(false);
             }));
             return Task.CompletedTask;
         }

BTCPayServer/HostedServices/NBXplorerWaiter.cs

@@ -41,6 +41,11 @@ namespace BTCPayServer.HostedServices
             return _Summaries.All(s => s.Value.Status != null && s.Value.Status.IsFullySynched);
         }
 
+        public bool IsFullySynched(string cryptoCode)
+        {
+            return _Summaries.Any(s => s.Key.Equals(cryptoCode, StringComparison.OrdinalIgnoreCase) && s.Value.Status != null && s.Value.Status.IsFullySynched);
+        }
+
         public IEnumerable<NBXplorerSummary> GetAll()
         {
             return _Summaries.Values;

BTCPayServer/Logging/ConsoleLogger.cs

@@ -12,7 +12,11 @@ namespace BTCPayServer.Logging
 {
     public class CustomConsoleLogProvider : ILoggerProvider
     {
-        ConsoleLoggerProcessor _Processor = new ConsoleLoggerProcessor();
+        ConsoleLoggerProcessor _Processor;
+        public CustomConsoleLogProvider(ConsoleLoggerProcessor processor)
+        {
+            _Processor = processor;
+        }
         public ILogger CreateLogger(string categoryName)
         {
             return new CustomConsoleLogger(categoryName, (a, b) => true, false, _Processor);

BTCPayServer/Migrations/20180114123253_events.Designer.cs

@@ -0,0 +1,508 @@
+// <auto-generated />
+using BTCPayServer.Data;
+using BTCPayServer.Services.Invoices;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage;
+using Microsoft.EntityFrameworkCore.Storage.Internal;
+using System;
+
+namespace BTCPayServer.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    [Migration("20180114123253_events")]
+    partial class events
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "2.0.1-rtm-125");
+
+            modelBuilder.Entity("BTCPayServer.Data.AddressInvoiceData", b =>
+                {
+                    b.Property<string>("Address")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<DateTimeOffset?>("CreatedTime");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Address");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("AddressInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.HistoricalAddressInvoiceData", b =>
+                {
+                    b.Property<string>("InvoiceDataId");
+
+                    b.Property<string>("Address");
+
+                    b.Property<DateTimeOffset>("Assigned");
+
+                    b.Property<string>("CryptoCode");
+
+                    b.Property<DateTimeOffset?>("UnAssigned");
+
+                    b.HasKey("InvoiceDataId", "Address");
+
+                    b.ToTable("HistoricalAddressInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<DateTimeOffset>("Created");
+
+                    b.Property<string>("CustomerEmail");
+
+                    b.Property<string>("ExceptionStatus");
+
+                    b.Property<string>("ItemCode");
+
+                    b.Property<string>("OrderId");
+
+                    b.Property<string>("Status");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("Invoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceEventData", b =>
+                {
+                    b.Property<string>("InvoiceDataId");
+
+                    b.Property<string>("UniqueId");
+
+                    b.Property<string>("Message");
+
+                    b.Property<DateTimeOffset>("Timestamp");
+
+                    b.HasKey("InvoiceDataId", "UniqueId");
+
+                    b.ToTable("InvoiceEvents");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PairedSINData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Facade");
+
+                    b.Property<string>("Label");
+
+                    b.Property<DateTimeOffset>("PairingTime");
+
+                    b.Property<string>("SIN");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SIN");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("PairedSINData");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PairingCodeData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<DateTime>("DateCreated");
+
+                    b.Property<DateTimeOffset>("Expiration");
+
+                    b.Property<string>("Facade");
+
+                    b.Property<string>("Label");
+
+                    b.Property<string>("SIN");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.Property<string>("TokenValue");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PairingCodes");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PaymentData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<bool>("Accounted");
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("Payments");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PendingInvoiceData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PendingInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.RefundAddressesData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("RefundAddresses");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.SettingData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Value");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Settings");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.StoreData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("DefaultCrypto");
+
+                    b.Property<string>("DerivationStrategies");
+
+                    b.Property<string>("DerivationStrategy");
+
+                    b.Property<int>("SpeedPolicy");
+
+                    b.Property<byte[]>("StoreBlob");
+
+                    b.Property<byte[]>("StoreCertificate");
+
+                    b.Property<string>("StoreName");
+
+                    b.Property<string>("StoreWebsite");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Stores");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.UserStore", b =>
+                {
+                    b.Property<string>("ApplicationUserId");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.Property<string>("Role");
+
+                    b.HasKey("ApplicationUserId", "StoreDataId");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("UserStore");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Models.ApplicationUser", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("AccessFailedCount");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256);
+
+                    b.Property<bool>("EmailConfirmed");
+
+                    b.Property<bool>("LockoutEnabled");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("PasswordHash");
+
+                    b.Property<string>("PhoneNumber");
+
+                    b.Property<bool>("PhoneNumberConfirmed");
+
+                    b.Property<bool>("RequiresEmailConfirmation");
+
+                    b.Property<string>("SecurityStamp");
+
+                    b.Property<bool>("TwoFactorEnabled");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasName("UserNameIndex");
+
+                    b.ToTable("AspNetUsers");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRole", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<string>("RoleId")
+                        .IsRequired();
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<string>("UserId")
+                        .IsRequired();
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("ProviderKey");
+
+                    b.Property<string>("ProviderDisplayName");
+
+                    b.Property<string>("UserId")
+                        .IsRequired();
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.Property<string>("UserId");
+
+                    b.Property<string>("RoleId");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.Property<string>("UserId");
+
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("Name");
+
+                    b.Property<string>("Value");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.AddressInvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("AddressInvoices")
+                        .HasForeignKey("InvoiceDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.HistoricalAddressInvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData")
+                        .WithMany("HistoricalAddressInvoices")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany()
+                        .HasForeignKey("StoreDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceEventData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData")
+                        .WithMany("Events")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PaymentData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("Payments")
+                        .HasForeignKey("InvoiceDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.RefundAddressesData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("RefundAddresses")
+                        .HasForeignKey("InvoiceDataId");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.UserStore", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser", "ApplicationUser")
+                        .WithMany("UserStores")
+                        .HasForeignKey("ApplicationUserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("UserStores")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole")
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole")
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

BTCPayServer/Migrations/20180114123253_events.cs

@@ -0,0 +1,38 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using System;
+using System.Collections.Generic;
+
+namespace BTCPayServer.Migrations
+{
+    public partial class events : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "InvoiceEvents",
+                columns: table => new
+                {
+                    InvoiceDataId = table.Column<string>(nullable: false),
+                    UniqueId = table.Column<string>(nullable: false),
+                    Message = table.Column<string>(nullable: true),
+                    Timestamp = table.Column<DateTimeOffset>(nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_InvoiceEvents", x => new { x.InvoiceDataId, x.UniqueId });
+                    table.ForeignKey(
+                        name: "FK_InvoiceEvents_Invoices_InvoiceDataId",
+                        column: x => x.InvoiceDataId,
+                        principalTable: "Invoices",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "InvoiceEvents");
+        }
+    }
+}

BTCPayServer/Migrations/ApplicationDbContextModelSnapshot.cs

@@ -81,6 +81,21 @@ namespace BTCPayServer.Migrations
                     b.ToTable("Invoices");
                 });
 
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceEventData", b =>
+                {
+                    b.Property<string>("InvoiceDataId");
+
+                    b.Property<string>("UniqueId");
+
+                    b.Property<string>("Message");
+
+                    b.Property<DateTimeOffset>("Timestamp");
+
+                    b.HasKey("InvoiceDataId", "UniqueId");
+
+                    b.ToTable("InvoiceEvents");
+                });
+
             modelBuilder.Entity("BTCPayServer.Data.PairedSINData", b =>
                 {
                     b.Property<string>("Id")
@@ -407,6 +422,14 @@ namespace BTCPayServer.Migrations
                         .HasForeignKey("StoreDataId");
                 });
 
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceEventData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData")
+                        .WithMany("Events")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
             modelBuilder.Entity("BTCPayServer.Data.PaymentData", b =>
                 {
                     b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")

BTCPayServer/Models/InvoicingModels/InvoiceDetailsModel.cs

@@ -97,6 +97,8 @@ namespace BTCPayServer.Models.InvoicingModels
             get;
             set;
         }
+
+        public string TransactionSpeed { get; set; }
         public object StoreName
         {
             get;
@@ -112,6 +114,8 @@ namespace BTCPayServer.Models.InvoicingModels
             get;
             internal set;
         }
+
+        public string RedirectUrl { get; set; }
         public string Fiat
         {
             get;
@@ -124,5 +128,6 @@ namespace BTCPayServer.Models.InvoicingModels
         }
         public HistoricalAddressInvoiceData[] Addresses { get; set; }
         public DateTimeOffset MonitoringDate { get; internal set; }
+        public List<Data.InvoiceEventData> Events { get; internal set; }
     }
 }

BTCPayServer/Models/StoreViewModels/StoreViewModel.cs

@@ -47,7 +47,34 @@ namespace BTCPayServer.Models.StoreViewModels
 
         public List<StoreViewModel.DerivationScheme> DerivationSchemes { get; set; } = new List<StoreViewModel.DerivationScheme>();
 
-        [Display(Name = "Payment invalid if transactions fails to confirm after ... minutes")]
+        [Display(Name = "Preferred price source (eg. bitfinex, bitstamp...)")]
+        public string PreferredExchange { get; set; }
+
+        public string RateSource
+        {
+            get
+            {
+                return PreferredExchange.IsCoinAverage() ? "https://apiv2.bitcoinaverage.com/indices/global/ticker/short" : $"https://apiv2.bitcoinaverage.com/exchanges/{PreferredExchange}";
+            }
+        }
+
+        [Display(Name = "Multiply the original rate by ...")]
+        [Range(0.01, 10.0)]
+        public double RateMultiplier
+        {
+            get;
+            set;
+        }
+
+        [Display(Name = "Invoice expires if the full amount has not been paid after ... minutes")]
+        [Range(1, 60 * 24 * 31)]
+        public int InvoiceExpiration
+        {
+            get;
+            set;
+        }
+
+        [Display(Name = "Payment invalid if transactions fails to confirm ... minutes after invoice expiration")]
         [Range(10, 60 * 24 * 31)]
         public int MonitoringExpiration
         {

BTCPayServer/Program.cs

@@ -24,7 +24,8 @@ namespace BTCPayServer
         {
             ServicePointManager.DefaultConnectionLimit = 100;
             IWebHost host = null;
-            CustomConsoleLogProvider loggerProvider = new CustomConsoleLogProvider();
+            var processor = new ConsoleLoggerProcessor();
+            CustomConsoleLogProvider loggerProvider = new CustomConsoleLogProvider(processor);
 
             var loggerFactory = new LoggerFactory();
             loggerFactory.AddProvider(loggerProvider);
@@ -44,7 +45,8 @@ namespace BTCPayServer
                     .ConfigureLogging(l =>
                     {
                         l.AddFilter("Microsoft", LogLevel.Error);
-                        l.AddProvider(new CustomConsoleLogProvider());
+                        l.AddFilter("Microsoft.AspNetCore.Antiforgery.Internal", LogLevel.Critical);
+                        l.AddProvider(new CustomConsoleLogProvider(processor));
                     })
                     .UseStartup<Startup>()
                     .Build();
@@ -61,13 +63,9 @@ namespace BTCPayServer
                 if (!string.IsNullOrEmpty(ex.Message))
                     Logs.Configuration.LogError(ex.Message);
             }
-            catch (Exception exception)
-            {
-                logger.LogError("Exception thrown while running the server");
-                logger.LogError(exception.ToString());
-            }
             finally
             {
+                processor.Dispose();
                 if (host != null)
                     host.Dispose();
                 loggerProvider.Dispose();

BTCPayServer/Services/BTCPayServerEnvironment.cs

@@ -5,12 +5,13 @@ using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
 using System.Text;
+using NBXplorer;
 
 namespace BTCPayServer.Services
 {
     public class BTCPayServerEnvironment
     {
-        public BTCPayServerEnvironment(IHostingEnvironment env)
+        public BTCPayServerEnvironment(IHostingEnvironment env, BTCPayNetworkProvider provider)
         {
             Version = typeof(BTCPayServerEnvironment).GetTypeInfo().Assembly.GetCustomAttribute<AssemblyFileVersionAttribute>().Version;
 #if DEBUG
@@ -19,11 +20,13 @@ namespace BTCPayServer.Services
 			Build = "Release";
 #endif
             Environment = env;
+            ChainType = provider.NBXplorerNetworkProvider.ChainType;
         }
         public IHostingEnvironment Environment
         {
             get; set;
         }
+        public ChainType ChainType { get; set; }
         public string Version
         {
             get; set;

BTCPayServer/Services/Invoices/InvoiceEntity.cs

@@ -299,6 +299,7 @@ namespace BTCPayServer.Services.Invoices
             set;
         }
         public bool ExtendedNotifications { get; set; }
+        public List<InvoiceEventData> Events { get; internal set; }
 
         public bool IsExpired()
         {
@@ -369,8 +370,8 @@ namespace BTCPayServer.Services.Invoices
                     dto.PaymentUrls = cryptoInfo.PaymentUrls;
                 }
 #pragma warning restore CS0618
-
-                dto.CryptoInfo.Add(cryptoInfo);
+                if(!info.IsPhantomBTC)
+                    dto.CryptoInfo.Add(cryptoInfo);
             }
 
             Populate(ProductInformation, dto);
@@ -410,22 +411,22 @@ namespace BTCPayServer.Services.Invoices
         public Dictionary<string, CryptoData> GetCryptoData(BTCPayNetworkProvider networkProvider, bool alwaysIncludeBTC = false)
         {
             Dictionary<string, CryptoData> rates = new Dictionary<string, CryptoData>();
-            bool btcAdded = false;
             var serializer = new Serializer(Dummy);
+            CryptoData phantom = null;
 #pragma warning disable CS0618
             // Legacy
             if (alwaysIncludeBTC)
             {
                 var btcNetwork = networkProvider?.GetNetwork("BTC");
-                rates.Add("BTC", new CryptoData() { ParentEntity = this, Rate = Rate, CryptoCode = "BTC", TxFee = TxFee, FeeRate = new FeeRate(TxFee, 100), DepositAddress = DepositAddress, Network = btcNetwork });
-                btcAdded = true;
+                phantom = new CryptoData() { ParentEntity = this, IsPhantomBTC = true, Rate = Rate, CryptoCode = "BTC", TxFee = TxFee, FeeRate = new FeeRate(TxFee, 100), DepositAddress = DepositAddress, Network = btcNetwork };
+                rates.Add("BTC", phantom);
             }
             if (CryptoData != null)
             {
                 foreach (var prop in CryptoData.Properties())
                 {
-                    if (prop.Name == "BTC" && btcAdded)
-                        continue;
+                    if (prop.Name == "BTC" && phantom != null)
+                        rates.Remove("BTC");
                     var r = serializer.ToObject<CryptoData>(prop.Value.ToString());
                     r.CryptoCode = prop.Name;
                     r.ParentEntity = this;
@@ -511,9 +512,12 @@ namespace BTCPayServer.Services.Invoices
         [JsonProperty(PropertyName = "depositAddress")]
         public string DepositAddress { get; set; }
 
+        [JsonIgnore]
+        public bool IsPhantomBTC { get; set; }
+
         public CryptoDataAccounting Calculate()
         {
-            var cryptoData = ParentEntity.GetCryptoData(null);
+            var cryptoData = ParentEntity.GetCryptoData(null, IsPhantomBTC);
             var totalDue = Money.Coins(ParentEntity.ProductInformation.Price / Rate);
             var paid = Money.Zero;
             var cryptoPaid = Money.Zero;

BTCPayServer/Services/Invoices/InvoiceRepository.cs

@@ -1,4 +1,5 @@
 using DBreeze;
+using Microsoft.Extensions.Logging;
 using System;
 using System.Collections.Generic;
 using System.Text;
@@ -16,6 +17,7 @@ using System.Threading.Tasks;
 using BTCPayServer.Data;
 using System.Globalization;
 using BTCPayServer.Models.InvoicingModels;
+using BTCPayServer.Logging;
 
 namespace BTCPayServer.Services.Invoices
 {
@@ -43,6 +45,7 @@ namespace BTCPayServer.Services.Invoices
 
         public async Task<bool> RemovePendingInvoice(string invoiceId)
         {
+            Logs.PayServer.LogInformation($"Remove pending invoice {invoiceId}");
             using (var ctx = _ContextFactory.CreateContext())
             {
                 ctx.PendingInvoices.Remove(new PendingInvoiceData() { Id = invoiceId });
@@ -173,8 +176,11 @@ namespace BTCPayServer.Services.Invoices
                 invoiceEntity.SetCryptoData(currencyData);
                 invoice.Blob = ToBytes(invoiceEntity, network.NBitcoinNetwork);
 
-                context.AddressInvoices.Add(new AddressInvoiceData() {
-                    InvoiceDataId = invoiceId, CreatedTime = DateTimeOffset.UtcNow }
+                context.AddressInvoices.Add(new AddressInvoiceData()
+                {
+                    InvoiceDataId = invoiceId,
+                    CreatedTime = DateTimeOffset.UtcNow
+                }
                 .SetHash(bitcoinAddress.ScriptPubKey.Hash, network.CryptoCode));
                 context.HistoricalAddressInvoices.Add(new HistoricalAddressInvoiceData()
                 {
@@ -188,6 +194,21 @@ namespace BTCPayServer.Services.Invoices
             }
         }
 
+        public async Task AddInvoiceEvent(string invoiceId, object evt)
+        {
+            using (var context = _ContextFactory.CreateContext())
+            {
+                context.InvoiceEvents.Add(new InvoiceEventData()
+                {
+                    InvoiceDataId = invoiceId,
+                    Message = evt.ToString(),
+                    Timestamp = DateTimeOffset.UtcNow,
+                    UniqueId = Encoders.Hex.EncodeData(RandomUtils.GetBytes(10))
+                });
+                await context.SaveChangesAsync();
+            }
+        }
+
         private static void MarkUnassigned(string invoiceId, InvoiceEntity entity, ApplicationDbContext context, string cryptoCode)
         {
             foreach (var address in entity.GetCryptoData(null))
@@ -196,7 +217,7 @@ namespace BTCPayServer.Services.Invoices
                     continue;
                 var historical = new HistoricalAddressInvoiceData();
                 historical.InvoiceDataId = invoiceId;
-                historical.SetAddress(address.Value.DepositAddress, cryptoCode);
+                historical.SetAddress(address.Value.DepositAddress, address.Value.CryptoCode);
                 historical.UnAssigned = DateTimeOffset.UtcNow;
                 context.Attach(historical);
                 context.Entry(historical).Property(o => o.UnAssigned).IsModified = true;
@@ -314,6 +335,10 @@ namespace BTCPayServer.Services.Invoices
             {
                 entity.AvailableAddressHashes = invoice.AddressInvoices.Select(a => a.GetHash() + a.GetCryptoCode()).ToHashSet();
             }
+            if(invoice.Events != null)
+            {
+                entity.Events = invoice.Events.OrderBy(c => c.Timestamp).ToList();
+            }
             return entity;
         }
 
@@ -326,8 +351,10 @@ namespace BTCPayServer.Services.Invoices
                     .Invoices
                     .Include(o => o.Payments)
                     .Include(o => o.RefundAddresses);
-                if(queryObject.IncludeAddresses)
+                if (queryObject.IncludeAddresses)
                     query = query.Include(o => o.HistoricalAddressInvoices).Include(o => o.AddressInvoices);
+                if (queryObject.IncludeEvents)
+                    query = query.Include(o => o.Events);
                 if (!string.IsNullOrEmpty(queryObject.InvoiceId))
                 {
                     query = query.Where(i => i.Id == queryObject.InvoiceId);
@@ -536,5 +563,7 @@ namespace BTCPayServer.Services.Invoices
             set;
         }
         public bool IncludeAddresses { get; set; }
+
+        public bool IncludeEvents { get; set; }
     }
 }

BTCPayServer/Services/Rates/CachedDefaultRateProviderFactory.cs

@@ -11,6 +11,15 @@ namespace BTCPayServer.Services.Rates
     {
         IMemoryCache _Cache;
         ConcurrentDictionary<string, IRateProvider> _Providers = new ConcurrentDictionary<string, IRateProvider>();
+
+        public IMemoryCache Cache
+        {
+            get
+            {
+                return _Cache;
+            }
+        }
+
         public CachedDefaultRateProviderFactory(IMemoryCache cache)
         {
             if (cache == null)
@@ -18,10 +27,12 @@ namespace BTCPayServer.Services.Rates
             _Cache = cache;
         }
 
+        public IRateProvider RateProvider { get; set; }
+
         public TimeSpan CacheSpan { get; set; } = TimeSpan.FromMinutes(1.0);
         public IRateProvider GetRateProvider(BTCPayNetwork network)
         {
-            return _Providers.GetOrAdd(network.CryptoCode, new CachedRateProvider(network.CryptoCode, network.DefaultRateProvider, _Cache) { CacheSpan = CacheSpan });
+            return _Providers.GetOrAdd(network.CryptoCode, new CachedRateProvider(network.CryptoCode, RateProvider ?? network.DefaultRateProvider, _Cache) { CacheSpan = CacheSpan });
         }
     }
 }

BTCPayServer/Services/Rates/CachedRateProvider.cs

@@ -19,19 +19,28 @@ namespace BTCPayServer.Services.Rates
             if (memoryCache == null)
                 throw new ArgumentNullException(nameof(memoryCache));
             this._Inner = inner;
-            this._MemoryCache = memoryCache;
+            this.MemoryCache = memoryCache;
             this._CryptoCode = cryptoCode;
         }
 
+        public IRateProvider Inner
+        {
+            get
+            {
+                return _Inner;
+            }
+        }
+
         public TimeSpan CacheSpan
         {
             get;
             set;
         } = TimeSpan.FromMinutes(1.0);
+        public IMemoryCache MemoryCache { get => _MemoryCache; private set => _MemoryCache = value; }
 
         public Task<decimal> GetRateAsync(string currency)
         {
-            return _MemoryCache.GetOrCreateAsync("CURR_" + currency + "_" + _CryptoCode, (ICacheEntry entry) =>
+            return MemoryCache.GetOrCreateAsync("CURR_" + currency + "_" + _CryptoCode, (ICacheEntry entry) =>
             {
                 entry.AbsoluteExpiration = DateTimeOffset.UtcNow + CacheSpan;
                 return _Inner.GetRateAsync(currency);
@@ -40,7 +49,7 @@ namespace BTCPayServer.Services.Rates
         
         public Task<ICollection<Rate>> GetRatesAsync()
         {
-            return _MemoryCache.GetOrCreateAsync("GLOBAL_RATES", (ICacheEntry entry) =>
+            return MemoryCache.GetOrCreateAsync("GLOBAL_RATES", (ICacheEntry entry) =>
             {
                 entry.AbsoluteExpiration = DateTimeOffset.UtcNow + CacheSpan;
                 return _Inner.GetRatesAsync();

BTCPayServer/Services/Rates/CoinAverageRateProvider.cs

@@ -24,6 +24,8 @@ namespace BTCPayServer.Services.Rates
             CryptoCode = cryptoCode ?? "BTC";
         }
 
+        public string Exchange { get; set; }
+
         public string CryptoCode { get; set; }
 
         public string Market
@@ -45,7 +47,15 @@ namespace BTCPayServer.Services.Rates
 
         private async Task<Dictionary<string, decimal>> GetRatesCore()
         {
-            var resp = await _Client.GetAsync($"https://apiv2.bitcoinaverage.com/indices/{Market}/ticker/short");
+            HttpResponseMessage resp = null;
+            if (Exchange == null)
+            {
+                resp = await _Client.GetAsync($"https://apiv2.bitcoinaverage.com/indices/{Market}/ticker/short");
+            }
+            else
+            {
+                resp = await _Client.GetAsync($"https://apiv2.bitcoinaverage.com/exchanges/{Exchange}");
+            }
             using (resp)
             {
 
@@ -57,9 +67,23 @@ namespace BTCPayServer.Services.Rates
                     throw new CoinAverageException("Unauthorized access to the API, premium plan needed");
                 resp.EnsureSuccessStatusCode();
                 var rates = JObject.Parse(await resp.Content.ReadAsStringAsync());
+                if(Exchange != null)
+                {
+                    rates = (JObject)rates["symbols"];
+                }
                 return rates.Properties()
                               .Where(p => p.Name.StartsWith(CryptoCode, StringComparison.OrdinalIgnoreCase))
-                              .ToDictionary(p => p.Name.Substring(CryptoCode.Length, p.Name.Length - CryptoCode.Length), p => ToDecimal(p.Value["last"]));
+                              .ToDictionary(p => p.Name.Substring(CryptoCode.Length, p.Name.Length - CryptoCode.Length), p =>
+                              {
+                                  if (Exchange == null)
+                                  {
+                                      return ToDecimal(p.Value["last"]);
+                                  }
+                                  else
+                                  {
+                                      return ToDecimal(p.Value["bid"]);
+                                  }
+                              });
             }
         }
 

BTCPayServer/Services/Rates/TweakRateProvider.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Data;
+
+namespace BTCPayServer.Services.Rates
+{
+    public class TweakRateProvider : IRateProvider
+    {
+        private BTCPayNetwork network;
+        private IRateProvider rateProvider;
+        private List<RateRule> rateRules;
+
+        public TweakRateProvider(BTCPayNetwork network, IRateProvider rateProvider, List<RateRule> rateRules)
+        {
+            if (network == null)
+                throw new ArgumentNullException(nameof(network));
+            if (rateProvider == null)
+                throw new ArgumentNullException(nameof(rateProvider));
+            if (rateRules == null)
+                throw new ArgumentNullException(nameof(rateRules));
+            this.network = network;
+            this.rateProvider = rateProvider;
+            this.rateRules = rateRules;
+        }
+
+        public async Task<decimal> GetRateAsync(string currency)
+        {
+            var rate = await rateProvider.GetRateAsync(currency);
+            foreach(var rule in rateRules)
+            {
+                rate = rule.Apply(network, rate);
+            }
+            return rate;
+        }
+
+        public async Task<ICollection<Rate>> GetRatesAsync()
+        {
+            List<Rate> rates = new List<Rate>();
+            foreach (var rate in await rateProvider.GetRatesAsync())
+            {
+                var localRate = rate.Value;
+                foreach (var rule in rateRules)
+                {
+                    localRate = rule.Apply(network, localRate);
+                }
+                rates.Add(new Rate(rate.Currency, localRate));
+            }
+            return rates;
+        }
+    }
+}

BTCPayServer/Services/Stores/StoreRepository.cs

@@ -68,7 +68,8 @@ namespace BTCPayServer.Services.Stores
                 StoreData store = new StoreData
                 {
                     Id = Encoders.Base58.EncodeData(RandomUtils.GetBytes(32)),
-                    StoreName = name
+                    StoreName = name,
+                    SpeedPolicy = Invoices.SpeedPolicy.MediumSpeed
                 };
                 var userStore = new UserStore
                 {

BTCPayServer/Services/TransactionCache.cs

@@ -1,4 +1,5 @@
 using System;
+using Microsoft.Extensions.Logging;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
@@ -29,33 +30,33 @@ namespace BTCPayServer.Services
     }
     public class TransactionCache : IDisposable
     {
-        IOptions<MemoryCacheOptions> _Options;
+        //IOptions<MemoryCacheOptions> _Options;
         public TransactionCache(IOptions<MemoryCacheOptions> options, BTCPayNetwork network)
         {
-            if (network == null)
-                throw new ArgumentNullException(nameof(network));
-            _Options = options;
-            _MemoryCache = new MemoryCache(_Options);
-            Network = network;
+            //if (network == null)
+            //    throw new ArgumentNullException(nameof(network));
+            //_Options = options;
+            //_MemoryCache = new MemoryCache(_Options);
+            //Network = network;
         }
 
-        uint256 _LastHash;
-        int _ConfOffset;
-        IMemoryCache _MemoryCache;
+        //uint256 _LastHash;
+        //int _ConfOffset;
+        //IMemoryCache _MemoryCache;
         
         public void NewBlock(uint256 newHash, uint256 previousHash)
         {
-            if (_LastHash != previousHash)
-            {
-                var old = _MemoryCache;
-                _ConfOffset = 0;
-                _MemoryCache = new MemoryCache(_Options);
-                Thread.MemoryBarrier();
-                old.Dispose();
-            }
-            else
-                _ConfOffset++;
-            _LastHash = newHash;
+            //if (_LastHash != previousHash)
+            //{
+            //    var old = _MemoryCache;
+            //    _ConfOffset = 0;
+            //    _MemoryCache = new MemoryCache(_Options);
+            //    Thread.MemoryBarrier();
+            //    old.Dispose();
+            //}
+            //else
+            //    _ConfOffset++;
+            //_LastHash = newHash;
         }
 
         public TimeSpan CacheSpan { get; private set; } = TimeSpan.FromMinutes(60);
@@ -64,29 +65,32 @@ namespace BTCPayServer.Services
 
         public void AddToCache(TransactionResult tx)
         {
-            _MemoryCache.Set(tx.Transaction.GetHash(), tx, DateTimeOffset.UtcNow + CacheSpan);
+            //Logging.Logs.PayServer.LogInformation($"ADD CACHE: {tx.Transaction.GetHash()} ({tx.Confirmations} conf)");
+            //_MemoryCache.Set(tx.Transaction.GetHash(), tx, DateTimeOffset.UtcNow + CacheSpan);
         }
 
 
         public TransactionResult GetTransaction(uint256 txId)
         {
-            _MemoryCache.TryGetValue(txId.ToString(), out object tx);
+            //var ok = _MemoryCache.TryGetValue(txId.ToString(), out object tx);
+            //Logging.Logs.PayServer.LogInformation($"GET CACHE: {txId} ({ok} plus {_ConfOffset})");
 
-            var result = tx as TransactionResult;
-            var confOffset = _ConfOffset;
-            if (result != null && result.Confirmations > 0 && confOffset > 0)
-            {
-                var serializer = new NBXplorer.Serializer(Network.NBitcoinNetwork);
-                result = serializer.ToObject<TransactionResult>(serializer.ToString(result));
-                result.Confirmations += confOffset;
-                result.Height += confOffset;
-            }
-            return result;
+            //var result = tx as TransactionResult;
+            //var confOffset = _ConfOffset;
+            //if (result != null && result.Confirmations > 0 && confOffset > 0)
+            //{
+            //    var serializer = new NBXplorer.Serializer(Network.NBitcoinNetwork);
+            //    result = serializer.ToObject<TransactionResult>(serializer.ToString(result));
+            //    result.Confirmations += confOffset;
+            //    result.Height += confOffset;
+            //}
+            //return result;
+            return null; // Does not work correctly yet
         }
 
         public void Dispose()
         {
-            _MemoryCache.Dispose();
+            //_MemoryCache.Dispose();
         }
     }
 }

BTCPayServer/Services/Wallets/BTCPayWallet.cs

@@ -15,8 +15,7 @@ namespace BTCPayServer.Services.Wallets
 {
     public class KnownState
     {
-        public uint256 UnconfirmedHash { get; set; }
-        public uint256 ConfirmedHash { get; set; }
+        public UTXOChanges PreviousCall { get; set; }
     }
     public class NetworkCoins
     {
@@ -57,7 +56,15 @@ namespace BTCPayServer.Services.Wallets
 
         public async Task<BitcoinAddress> ReserveAddressAsync(DerivationStrategyBase derivationStrategy)
         {
+            if (derivationStrategy == null)
+                throw new ArgumentNullException(nameof(derivationStrategy));
             var pathInfo = await _Client.GetUnusedAsync(derivationStrategy, DerivationFeature.Deposit, 0, true).ConfigureAwait(false);
+            // Might happen on some broken install
+            if (pathInfo == null)
+            {
+                await _Client.TrackAsync(derivationStrategy).ConfigureAwait(false);
+                pathInfo = await _Client.GetUnusedAsync(derivationStrategy, DerivationFeature.Deposit, 0, true).ConfigureAwait(false);
+            }
             return pathInfo.ScriptPubKey.GetDestinationAddress(Network.NBitcoinNetwork);
         }
 
@@ -80,11 +87,11 @@ namespace BTCPayServer.Services.Wallets
 
         public async Task<NetworkCoins> GetCoins(DerivationStrategyBase strategy, KnownState state, CancellationToken cancellation = default(CancellationToken))
         {
-            var changes = await _Client.SyncAsync(strategy, state?.ConfirmedHash, state?.UnconfirmedHash, true, cancellation).ConfigureAwait(false);
+            var changes = await _Client.GetUTXOsAsync(strategy, state?.PreviousCall, false, cancellation).ConfigureAwait(false);
             return new NetworkCoins()
             {
                 TimestampedCoins = changes.Confirmed.UTXOs.Concat(changes.Unconfirmed.UTXOs).Select(c => new NetworkCoins.TimestampedCoin() { Coin = c.AsCoin(), DateTime = c.Timestamp }).ToArray(),
-                State = new KnownState() { ConfirmedHash = changes.Confirmed.Hash, UnconfirmedHash = changes.Unconfirmed.Hash },
+                State = new KnownState() { PreviousCall = changes },
                 Strategy = strategy,
                 Wallet = this
             };
@@ -99,10 +106,18 @@ namespace BTCPayServer.Services.Wallets
 
         public async Task<Money> GetBalance(DerivationStrategyBase derivationStrategy)
         {
-            var result = await _Client.SyncAsync(derivationStrategy, null, true);
-            return result.Confirmed.UTXOs.Select(u => u.Value)
-                         .Concat(result.Unconfirmed.UTXOs.Select(u => u.Value))
-                         .Sum();
+            var result = await _Client.GetUTXOsAsync(derivationStrategy, null, true);
+
+            Dictionary<OutPoint, UTXO> received = new Dictionary<OutPoint, UTXO>();
+            foreach(var utxo in result.Confirmed.UTXOs.Concat(result.Unconfirmed.UTXOs))
+            {
+                received.TryAdd(utxo.Outpoint, utxo);
+            }
+            foreach (var utxo in result.Confirmed.SpentOutpoints.Concat(result.Unconfirmed.SpentOutpoints))
+            {
+                received.Remove(utxo);
+            }
+            return received.Values.Select(c => c.Value).Sum();
         }
     }
 }

BTCPayServer/Services/Wallets/BTCPayWalletProvider.cs

@@ -38,5 +38,10 @@ namespace BTCPayServer.Services.Wallets
                 return null;
             return new BTCPayWallet(client, _TransactionCacheProvider.GetTransactionCache(network), network);
         }
+
+        public bool IsAvailable(BTCPayNetwork network)
+        {
+            return _Client.IsAvailable(network);
+        }
     }
 }

BTCPayServer/Views/Home/Home.cshtml

@@ -57,10 +57,10 @@
         <h2>Video tutorials</h2>
         <div class="row">
             <div class="col-md-6 text-center">
-                <iframe width="560" height="315" src="https://www.youtube.com/embed/xh3Eac66qc4" frameborder="0" allowfullscreen></iframe>
+                <iframe width="400" height="225" src="https://www.youtube.com/embed/xh3Eac66qc4" frameborder="0" allowfullscreen></iframe>
             </div>
             <div class="col-md-6 text-center">
-                <iframe width="560" height="315" src="https://www.youtube.com/embed/Xo_vApXTZBU" frameborder="0" allowfullscreen></iframe>
+                <iframe width="400" height="225" src="https://www.youtube.com/embed/Xo_vApXTZBU" frameborder="0" allowfullscreen></iframe>
             </div>
         </div>
     </div>

BTCPayServer/Views/Invoice/Checkout.cshtml

@@ -21,7 +21,7 @@
 		@Model.ToJSVariableModel("srvModel")
     </script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.7.1/clipboard.min.js"></script>
-    <script src="~/js/vue.js" type="text/javascript" defer="defer"></script>
+    <script src="~/js/vue.min.js" type="text/javascript" defer="defer"></script>
     <script src="~/js/vue-qrcode.js" type="text/javascript" defer="defer"></script>
     <script src="~/js/core.js" type="text/javascript" defer="defer"></script>
     <!-- <script src="img/Intl.js" type="text/javascript" defer="defer"></script>

BTCPayServer/Views/Invoice/Invoice.cshtml

@@ -53,6 +53,10 @@
                         <th>Monitoring date</th>
                         <td>@Model.MonitoringDate</td>
                     </tr>
+                    <tr>
+                        <th>Transaction speed</th>
+                        <td>@Model.TransactionSpeed</td>
+                    </tr>
                     <tr>
                         <th>Status</th>
                         <td>@Model.Status</td>
@@ -77,6 +81,10 @@
                         <th>Notification Url</th>
                         <td>@Model.NotificationUrl</td>
                     </tr>
+                    <tr>
+                        <th>Redirect Url</th>
+                        <td>@Model.RedirectUrl</td>
+                    </tr>
                 </table>
             </div>
 
@@ -221,5 +229,28 @@
                 </table>
             </div>
         </div>
+
+        <div class="row">
+            <div class="col-md-12">
+                <h3>Events</h3>
+                <table class="table">
+                    <thead class="thead-inverse">
+                        <tr>
+                            <th>Date</th>
+                            <th>Message</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        @foreach(var evt in Model.Events)
+                        {
+                            <tr>
+                                <td>@evt.Timestamp</td>
+                                <td>@evt.Message</td>
+                            </tr>
+                        }
+                    </tbody>
+                </table>
+            </div>
+        </div>
     </div>
 </section>

BTCPayServer/Views/Shared/SyncModal.cshtml

@@ -0,0 +1,94 @@
+@inject BTCPayServer.HostedServices.NBXplorerDashboard dashboard
+<!-- Modal -->
+<div id="modalDialog" class="modal-dialog animated bounceInRight">
+
+    <!-- Modal content-->
+    <div class="modal-content">
+        <div class="modal-header">
+            <h4 class="modal-title">Your nodes are synching...</h4>
+            <button type="button" class="close" onclick="dismissSyncModal()">&times;</button>
+        </div>
+        <div class="modal-body">
+            <p>
+                Some of your nodes are still synching...<br />
+                BTCPay Server will not work correctly until it is over.
+            </p>
+            @foreach (var line in dashboard.GetAll())
+            {
+                <h4>@line.Network.CryptoCode</h4>
+                @if (line.Status == null)
+                {
+                    <ul>
+                        <li>The node is offline</li>
+                        @if (line.Error != null)
+                        {
+                            <li>Last error: @line.Error</li>
+                        }
+                    </ul>
+                }
+                else
+                {
+                    <ul>
+                        <li>NBXplorer headers height: @line.Status.ChainHeight</li>
+                        @if (line.Status.BitcoinStatus == null)
+                        {
+                            if (line.State == BTCPayServer.HostedServices.NBXplorerState.Synching)
+                            {
+                                <li>The node is starting...</li>
+                            }
+                            else
+                            {
+                                <li>The node is offline</li>
+                                @if (line.Error != null)
+                                {
+                                    <li>Last error: @line.Error</li>
+                                }
+                            }
+                        }
+                        else if (line.Status.BitcoinStatus.IsSynched)
+                        {
+                            <li>The node is synched (Height: @line.Status.BitcoinStatus.Headers)</li>
+                            @if (line.Status.BitcoinStatus.IsSynched &&
+                                line.Status.SyncHeight.HasValue &&
+                                line.Status.SyncHeight.Value < line.Status.BitcoinStatus.Headers)
+                            {
+                                <li>NBXplorer is synching... (Height: @line.Status.SyncHeight.Value)</li>
+                            }
+                        }
+                        else
+                        {
+                            <li>Node headers height: @line.Status.BitcoinStatus.Headers</li>
+                            <li>Validated blocks: @line.Status.BitcoinStatus.Blocks</li>
+                        }
+                    </ul>
+                    @if (!line.Status.IsFullySynched && line.Status.BitcoinStatus != null)
+                    {
+                        <div class="progress">
+                            <div class="progress-bar" role="progressbar" aria-valuenow="@((int)(line.Status.BitcoinStatus.VerificationProgress * 100))"
+                                 aria-valuemin="0" aria-valuemax="100" style="width:@((int)(line.Status.BitcoinStatus.VerificationProgress * 100))%">
+                                @((int)(line.Status.BitcoinStatus.VerificationProgress * 100))%
+                            </div>
+                        </div>
+                    }
+                }
+            }
+        </div>
+    </div>
+
+</div>
+
+<link href="~/vendor/animatecss/animate.css" rel="stylesheet" />
+<script type="text/javascript">
+    function dismissSyncModal() {
+        $("#modalDialog").addClass('animated bounceOutRight')
+    }
+</script>
+
+<style type="text/css">
+    #modalDialog {
+        position: fixed;
+        bottom: 20px;
+        right: 20px;
+        margin: 0px;
+    }
+</style>

BTCPayServer/Views/Shared/_Layout.cshtml

@@ -38,7 +38,7 @@
 <body id="page-top">
 
     @{
-        if(ViewBag.AlwaysShrinkNavBar == null)
+        if (ViewBag.AlwaysShrinkNavBar == null)
         {
             ViewBag.AlwaysShrinkNavBar = true;
         }
@@ -48,30 +48,36 @@
     <!-- Navigation -->
     <nav class='navbar navbar-expand-lg navbar-light fixed-top @additionalStyle' id="mainNav">
         <div class="container">
-            <a class="navbar-brand js-scroll-trigger" href="~/"><img src="~/img/logo.png" height="45"></a>
+            <a class="navbar-brand js-scroll-trigger" href="~/">
+                <img src="~/img/logo.png" height="45">
+                @if(env.ChainType != NBXplorer.ChainType.Main)
+                {
+                <span class="badge badge-warning" style="font-size:10px;">@env.ChainType.ToString()</span>
+                }
+            </a>
             <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
                 <span class="navbar-toggler-icon"></span>
             </button>
             <div class="collapse navbar-collapse" id="navbarResponsive">
                 <ul class="navbar-nav ml-auto">
                     @if(SignInManager.IsSignedIn(User))
-                    {
-                        @if(User.IsInRole(Roles.ServerAdmin))
-                        {
-                            <li class="nav-item"><a asp-area="" asp-controller="Server" asp-action="ListUsers" class="nav-link js-scroll-trigger">Server settings</a></li>
-                        }
-                        <li class="nav-item"><a asp-area="" asp-controller="Stores" asp-action="ListStores" class="nav-link js-scroll-trigger">Stores</a></li>
-                        <li class="nav-item"><a asp-area="" asp-controller="Invoice" asp-action="ListInvoices" class="nav-link js-scroll-trigger">Invoices</a></li>
-                        <li class="nav-item">
-                            <a asp-area="" asp-controller="Manage" asp-action="Index" title="Manage" class="nav-link js-scroll-trigger">My settings</a>
-                        </li>
-                        <li class="nav-item">
-                            <a asp-area="" asp-controller="Account" asp- asp-action="Logout" title="Manage" class="nav-link js-scroll-trigger">Log out</a>
-                        </li>}
-                    else
-                    {
-                        <li class="nav-item"><a asp-area="" asp-controller="Account" asp-action="Register" class="nav-link js-scroll-trigger">Register</a></li>
-                        <li class="nav-item"><a asp-area="" asp-controller="Account" asp-action="Login" class="nav-link js-scroll-trigger">Log in</a></li>}
+            {
+                @if(User.IsInRole(Roles.ServerAdmin))
+        {
+            <li class="nav-item"><a asp-area="" asp-controller="Server" asp-action="ListUsers" class="nav-link js-scroll-trigger">Server settings</a></li>
+}
+                <li class="nav-item"><a asp-area="" asp-controller="Stores" asp-action="ListStores" class="nav-link js-scroll-trigger">Stores</a></li>
+                <li class="nav-item"><a asp-area="" asp-controller="Invoice" asp-action="ListInvoices" class="nav-link js-scroll-trigger">Invoices</a></li>
+                <li class="nav-item">
+                    <a asp-area="" asp-controller="Manage" asp-action="Index" title="Manage" class="nav-link js-scroll-trigger">My settings</a>
+                </li>
+                <li class="nav-item">
+                    <a asp-area="" asp-controller="Account" asp- asp-action="Logout" title="Manage" class="nav-link js-scroll-trigger">Log out</a>
+                </li>}
+    else
+    {
+        <li class="nav-item"><a asp-area="" asp-controller="Account" asp-action="Register" class="nav-link js-scroll-trigger">Register</a></li>
+        <li class="nav-item"><a asp-area="" asp-controller="Account" asp-action="Login" class="nav-link js-scroll-trigger">Log in</a></li>}
 
                 </ul>
             </div>
@@ -80,93 +86,6 @@
 
     @RenderBody()
 
-
-    @if(!dashboard.IsFullySynched())
-    {
-        <!-- Modal -->
-        <div id="synching-modal" class="modal fade" role="dialog">
-            <div class="modal-dialog">
-
-                <!-- Modal content-->
-                <div class="modal-content">
-                    <div class="modal-header">
-                        <h4 class="modal-title">Your nodes are synching...</h4>
-                        <button type="button" class="close" data-dismiss="modal">&times;</button>
-                    </div>
-                    <div class="modal-body">
-                        <p>
-                            Some of your nodes are still synching...<br />
-                            BTCPay Server will not work correctly until it is over.
-                        </p>
-                        @foreach(var line in dashboard.GetAll())
-                        {
-                            <h4>@line.Network.CryptoCode</h4>
-                            @if(line.Status == null)
-                            {
-                                <ul>
-                                <li>The node is offline</li>
-                                @if(line.Error != null)
-                                {
-                                    <li>Last error: @line.Error</li>
-                                }
-                                </ul>
-                            }
-                            else
-                            {
-                                <ul>
-                                    <li>NBXplorer headers height: @line.Status.ChainHeight</li>
-                                    @if(line.Status.BitcoinStatus == null)
-                                    {
-                                        if(line.State == BTCPayServer.HostedServices.NBXplorerState.Synching)
-                                        {
-                                            <li>The node is starting...</li>
-                                        }
-                                        else
-                                        {
-                                            <li>The node is offline</li>
-                                            @if(line.Error != null)
-                                            {
-                                                <li>Last error: @line.Error</li>
-                                            }
-                                        }
-                                    }
-                                    else if(line.Status.BitcoinStatus.IsSynched)
-                                    {
-                                        <li>The node is synched (Height: @line.Status.BitcoinStatus.Headers)</li>
-                                        @if(line.Status.BitcoinStatus.IsSynched &&
-                                            line.Status.SyncHeight.HasValue &&
-                                            line.Status.SyncHeight.Value < line.Status.BitcoinStatus.Headers)
-                                        {
-                                            <li>NBXplorer is synching... (Height: @line.Status.SyncHeight.Value)</li>
-                                        }
-                                    }
-                                    else
-                                    {
-                                        <li>Node headers height: @line.Status.BitcoinStatus.Headers</li>
-                                        <li>Validated blocks: @line.Status.BitcoinStatus.Blocks</li>
-                                    }
-                                </ul>
-                                @if(!line.Status.IsFullySynched && line.Status.BitcoinStatus != null)
-                                {
-                                    <div class="progress">
-                                        <div class="progress-bar" role="progressbar" aria-valuenow="@((int)(line.Status.BitcoinStatus.VerificationProgress * 100))"
-                                             aria-valuemin="0" aria-valuemax="100" style="width:@((int)(line.Status.BitcoinStatus.VerificationProgress * 100))%">
-                                            @((int)(line.Status.BitcoinStatus.VerificationProgress * 100))%
-                                        </div>
-                                    </div>
-                                }
-                            }
-                        }
-                    </div>
-                    <div class="modal-footer">
-                        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
-                    </div>
-                </div>
-
-            </div>
-        </div>
-    }
-
     <footer class="bg-dark">
         <div class="container text-right"><span style="font-size:8px;">@env.ToString()</span></div>
     </footer>
@@ -184,13 +103,10 @@
     <!-- Custom scripts for this template -->
     <script src="~/js/creative.js"></script>
 
-    @if(!dashboard.IsFullySynched())
+
+    @if (!dashboard.IsFullySynched())
     {
-        <script type="text/javascript">
-            $(function () {
-                $("#synching-modal").modal();
-            });
-        </script>
+        @Html.Partial("SyncModal")
     }
 
     @RenderSection("Scripts", required: false)

BTCPayServer/Views/Stores/UpdateStore.cshtml

@@ -38,6 +38,24 @@
                 <label asp-for="NetworkFee"></label>
                 <input asp-for="NetworkFee" type="checkbox" class="form-check" />
             </div>
+            <div class="form-group">
+                <label asp-for="PreferredExchange"></label>
+                <input asp-for="PreferredExchange" class="form-control" />
+                <span asp-validation-for="PreferredExchange" class="text-danger"></span>
+                <p id="PreferredExchangeHelpBlock" class="form-text text-muted">
+                    Current price source is <a href="@Model.RateSource" target="_blank">@Model.PreferredExchange</a>.<small> (using 1 minute cache)</small>
+                </p>
+            </div>
+            <div class="form-group">
+                <label asp-for="RateMultiplier"></label>
+                <input asp-for="RateMultiplier" class="form-control" />
+                <span asp-validation-for="RateMultiplier" class="text-danger"></span>
+            </div>
+            <div class="form-group">
+                <label asp-for="InvoiceExpiration"></label>
+                <input asp-for="InvoiceExpiration" class="form-control" />
+                <span asp-validation-for="InvoiceExpiration" class="text-danger"></span>
+            </div>
             <div class="form-group">
                 <label asp-for="MonitoringExpiration"></label>
                 <input asp-for="MonitoringExpiration" class="form-control" />

BTCPayServer/wwwroot/css/creative.css

@@ -43,7 +43,7 @@ h6 {
 }
 
 p {
-    font-size: 16px;
+    /*font-size: 16px;*/
     line-height: 1.5;
     margin-bottom: 20px;
 }

BTCPayServer/wwwroot/js/core.js

@@ -14,6 +14,12 @@
 */
 
 // TODO: Vue controller... complete migrate to it for binding, animations can stay in jQuery
+Vue.config.ignoredElements = [
+    'line-items',
+    'low-fee-timeline',
+    // Ignoring custom HTML5 elements, eg: bp-spinner
+    /^bp-/
+]
 var checkoutCtrl = new Vue({
     el: '#checkoutCtrl',
     components: {

Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/aspnetcore-build AS builder
+FROM microsoft/aspnetcore-build:2.0.5-2.1.4-stretch AS builder
 WORKDIR /source
 COPY BTCPayServer/BTCPayServer.csproj BTCPayServer.csproj
 # Cache some dependencies
@@ -6,7 +6,7 @@ RUN dotnet restore
 COPY BTCPayServer/. .
 RUN dotnet publish --output /app/ --configuration Release
 
-FROM microsoft/aspnetcore:2.0.3
+FROM microsoft/aspnetcore:2.0.5-stretch
 WORKDIR /app
 
 RUN mkdir /datadir

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2017 btcpayserver
+Copyright (c) 2017-2018 btcpayserver
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -8,17 +8,17 @@
 
 ## Introduction 
 
-BTCPay Server is an Open Source payment processor conforms to the invoice API of Bitpay.
+BTCPay Server is an Open Source payment processor, written in C#, that conforms to the invoice API of [Bitpay](https://bitpay.com/).
 This allows easy migration of your code base to your own, self-hosted payment processor.
 
 This solution is for you if:
 
-* You currently use Bitpay as a payment processor but are worry about their commitment to Bitcoin in the future
+* You are currently using Bitpay as a payment processor but are worried about their commitment to Bitcoin in the future
 * You want to be in control of your own funds
 * Bitpay compliance team decided to reject your application
-* You want lower fee (we support Segwit)
-* You want to become a payment processor yourself and offer BTCPay hosted solution to merchants
-* You want to a way support other currency than those offered by Bitpay
+* You want lower fees (we support Segwit)
+* You want to become a payment processor yourself and offer a BTCPay hosted solution to merchants
+* You want a way to support currencies other than those offered by Bitpay
 
 ## Documentation
 

global.json

@@ -1 +0,0 @@
-{ "sdk": { "version": "2.0.0" } }