Add support for groestlcoin

Support UFO

BTCPayServer.Tests/BTCPayServer.Tests.csproj

@@ -1,14 +1,15 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp2.1</TargetFramework>
 
     <IsPackable>false</IsPackable>
     <NoWarn>NU1701,CA1816,CA1308,CA1810,CA2208</NoWarn>
+    <LangVersion>7.2</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.7.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.7.2" />
     <PackageReference Include="xunit" Version="2.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
   </ItemGroup>

BTCPayServer.Tests/BTCPayServerTester.cs

@@ -129,19 +129,19 @@ namespace BTCPayServer.Tests
             {
                 Exchange = "coinaverage",
                 CurrencyPair = CurrencyPair.Parse("BTC_USD"),
-                Value = 5000m
+                BidAsk = new BidAsk(5000m)
             });
             coinAverageMock.ExchangeRates.Add(new Rating.ExchangeRate()
             {
                 Exchange = "coinaverage",
                 CurrencyPair = CurrencyPair.Parse("BTC_CAD"),
-                Value = 4500m
+                BidAsk = new BidAsk(4500m)
             });
             coinAverageMock.ExchangeRates.Add(new Rating.ExchangeRate()
             {
                 Exchange = "coinaverage",
                 CurrencyPair = CurrencyPair.Parse("LTC_USD"),
-                Value = 500m
+                BidAsk = new BidAsk(500m)
             });
             rateProvider.DirectProviders.Add("coinaverage", coinAverageMock);
         }

BTCPayServer.Tests/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/dotnet:2.1.300-rc1-sdk-alpine3.7
+FROM microsoft/dotnet:2.1.300-sdk-alpine3.7
 WORKDIR /app
  # caches restore result by copying csproj file separately
 COPY BTCPayServer.Tests/BTCPayServer.Tests.csproj BTCPayServer.Tests/BTCPayServer.Tests.csproj

BTCPayServer.Tests/RateRulesTest.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Text;
 using BTCPayServer.Rating;
 using Xunit;
+using System.Globalization;
 
 namespace BTCPayServer.Tests
 {
@@ -94,12 +95,12 @@ namespace BTCPayServer.Tests
                 Assert.Equal(test.ExpectedExchangeRates, string.Join(',', rule.ExchangeRates.OfType<object>().ToArray()));
             }
             var rule2 = rules.GetRuleFor(CurrencyPair.Parse("DOGE_CAD"));
-            rule2.ExchangeRates.SetRate("bittrex", CurrencyPair.Parse("DOGE_BTC"), 5000);
+            rule2.ExchangeRates.SetRate("bittrex", CurrencyPair.Parse("DOGE_BTC"), new BidAsk(5000m));
             rule2.Reevaluate();
             Assert.True(rule2.HasError);
             Assert.Equal("5000 * ERR_RATE_UNAVAILABLE(coinbase, BTC_CAD) * 1.1", rule2.ToString(true));
             Assert.Equal("bittrex(DOGE_BTC) * coinbase(BTC_CAD) * 1.1", rule2.ToString(false));
-            rule2.ExchangeRates.SetRate("coinbase", CurrencyPair.Parse("BTC_CAD"), 2000.4m);
+            rule2.ExchangeRates.SetRate("coinbase", CurrencyPair.Parse("BTC_CAD"), new BidAsk(2000.4m));
             rule2.Reevaluate();
             Assert.False(rule2.HasError);
             Assert.Equal("5000 * 2000.4 * 1.1", rule2.ToString(true));
@@ -116,7 +117,7 @@ namespace BTCPayServer.Tests
 
             rule2 = rules.GetRuleFor(CurrencyPair.Parse("DOGE_USD"));
             Assert.Equal("(2000 * (-3 + coinbase(BTC_CAD) + 50 - 5)) * 1.1", rule2.ToString());
-            rule2.ExchangeRates.SetRate("coinbase", CurrencyPair.Parse("BTC_CAD"), 1000m);
+            rule2.ExchangeRates.SetRate("coinbase", CurrencyPair.Parse("BTC_CAD"), new BidAsk(1000m));
             Assert.True(rule2.Reevaluate());
             Assert.Equal("(2000 * (-3 + 1000 + 50 - 5)) * 1.1", rule2.ToString(true));
             Assert.Equal((2000m * (-3m + 1000m + 50m - 5m)) * 1.1m, rule2.Value.Value);
@@ -124,10 +125,10 @@ namespace BTCPayServer.Tests
             // Test inverse
             rule2 = rules.GetRuleFor(CurrencyPair.Parse("USD_DOGE"));
             Assert.Equal("(1 / (2000 * (-3 + coinbase(BTC_CAD) + 50 - 5))) * 1.1", rule2.ToString());
-            rule2.ExchangeRates.SetRate("coinbase", CurrencyPair.Parse("BTC_CAD"), 1000m);
+            rule2.ExchangeRates.SetRate("coinbase", CurrencyPair.Parse("BTC_CAD"), new BidAsk(1000m));
             Assert.True(rule2.Reevaluate());
             Assert.Equal("(1 / (2000 * (-3 + 1000 + 50 - 5))) * 1.1", rule2.ToString(true));
-            Assert.Equal(( 1.0m / (2000m * (-3m + 1000m + 50m - 5m))) * 1.1m, rule2.Value.Value);
+            Assert.Equal((1.0m / (2000m * (-3m + 1000m + 50m - 5m))) * 1.1m, rule2.Value.Value);
             ////////
 
             // Make sure kraken is not converted to CurrencyPair
@@ -135,8 +136,44 @@ namespace BTCPayServer.Tests
             builder.AppendLine("BTC_USD = kraken(BTC_USD)");
             Assert.True(RateRules.TryParse(builder.ToString(), out rules));
             rule2 = rules.GetRuleFor(CurrencyPair.Parse("BTC_USD"));
-            rule2.ExchangeRates.SetRate("kraken", CurrencyPair.Parse("BTC_USD"), 1000m);
+            rule2.ExchangeRates.SetRate("kraken", CurrencyPair.Parse("BTC_USD"), new BidAsk(1000m));
             Assert.True(rule2.Reevaluate());
+
+            // Make sure can handle pairs
+            builder = new StringBuilder();
+            builder.AppendLine("BTC_USD = kraken(BTC_USD)");
+            Assert.True(RateRules.TryParse(builder.ToString(), out rules));
+            rule2 = rules.GetRuleFor(CurrencyPair.Parse("BTC_USD"));
+            rule2.ExchangeRates.SetRate("kraken", CurrencyPair.Parse("BTC_USD"), new BidAsk(6000m, 6100m));
+            Assert.True(rule2.Reevaluate());
+            Assert.Equal("(6000, 6100)", rule2.ToString(true));
+            Assert.Equal(6000m, rule2.Value.Value);
+            rule2 = rules.GetRuleFor(CurrencyPair.Parse("USD_BTC"));
+            rule2.ExchangeRates.SetRate("kraken", CurrencyPair.Parse("BTC_USD"), new BidAsk(6000m, 6100m));
+            Assert.True(rule2.Reevaluate());
+            Assert.Equal("1 / (6000, 6100)", rule2.ToString(true));
+            Assert.Equal(1m / 6100m, rule2.Value.Value);
+
+            // Make sure the inverse has more priority than X_X or CDNT_X
+            builder = new StringBuilder();
+            builder.AppendLine("EUR_CDNT = 10");
+            builder.AppendLine("CDNT_BTC = CDNT_EUR * EUR_BTC;");
+            builder.AppendLine("CDNT_X = CDNT_BTC * BTC_X;");
+            builder.AppendLine("X_X = coinaverage(X_X);");
+            Assert.True(RateRules.TryParse(builder.ToString(), out rules));
+            rule2 = rules.GetRuleFor(CurrencyPair.Parse("CDNT_EUR"));
+            rule2.ExchangeRates.SetRate("coinaverage", CurrencyPair.Parse("BTC_USD"), new BidAsk(6000m, 6100m));
+            Assert.True(rule2.Reevaluate());
+            Assert.Equal("1 / 10", rule2.ToString(false));
+
+            // Make sure an inverse can be solved on an exchange
+            builder = new StringBuilder();
+            builder.AppendLine("X_X = coinaverage(X_X);");
+            Assert.True(RateRules.TryParse(builder.ToString(), out rules));
+            rule2 = rules.GetRuleFor(CurrencyPair.Parse("USD_BTC"));
+            rule2.ExchangeRates.SetRate("coinaverage", CurrencyPair.Parse("BTC_USD"), new BidAsk(6000m, 6100m));
+            Assert.True(rule2.Reevaluate());
+            Assert.Equal($"({(1m / 6100m).ToString(CultureInfo.InvariantCulture)}, {(1m / 6000m).ToString(CultureInfo.InvariantCulture)})", rule2.ToString(true));
         }
     }
 }

BTCPayServer.Tests/ServerTester.cs

@@ -185,99 +185,6 @@ namespace BTCPayServer.Tests
 
         HttpClient _Http = new HttpClient();
 
-        class MockHttpRequest : HttpRequest
-        {
-            Uri serverUri;
-            public MockHttpRequest(Uri serverUri)
-            {
-                this.serverUri = serverUri;
-            }
-            public override HttpContext HttpContext => throw new NotImplementedException();
-
-            public override string Method
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override string Scheme
-            {
-                get => serverUri.Scheme;
-                set => throw new NotImplementedException();
-            }
-            public override bool IsHttps
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override HostString Host
-            {
-                get => new HostString(serverUri.Host, serverUri.Port);
-                set => throw new NotImplementedException();
-            }
-            public override PathString PathBase
-            {
-                get => "";
-                set => throw new NotImplementedException();
-            }
-            public override PathString Path
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override QueryString QueryString
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override IQueryCollection Query
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override string Protocol
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-
-            public override IHeaderDictionary Headers => throw new NotImplementedException();
-
-            public override IRequestCookieCollection Cookies
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override long? ContentLength
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override string ContentType
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-            public override Stream Body
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-
-            public override bool HasFormContentType => throw new NotImplementedException();
-
-            public override IFormCollection Form
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-
-            public override Task<IFormCollection> ReadFormAsync(CancellationToken cancellationToken = default(CancellationToken))
-            {
-                throw new NotImplementedException();
-            }
-        }
-
-
         public BTCPayServerTester PayTester
         {
             get; set;

BTCPayServer.Tests/UnitTest1.cs

@@ -321,7 +321,7 @@ namespace BTCPayServer.Tests
         [Fact]
         public void RoundupCurrenciesCorrectly()
         {
-            foreach(var test in new[] 
+            foreach (var test in new[]
             {
                 (0.0005m, "$0.0005 (USD)"),
                 (0.001m, "$0.001 (USD)"),
@@ -343,6 +343,7 @@ namespace BTCPayServer.Tests
                 var user = tester.NewAccount();
                 user.GrantAccess();
                 user.RegisterDerivationScheme("BTC");
+                Assert.True(user.BitPay.TestAccess(Facade.Merchant));
                 var invoice = user.BitPay.CreateInvoice(new Invoice()
                 {
                     Buyer = new Buyer() { email = "test@fwf.com" },
@@ -770,8 +771,30 @@ namespace BTCPayServer.Tests
                 Assert.False(user.BitPay.TestAccess(Facade.Merchant));
                 user.GrantAccess();
                 user.RegisterDerivationScheme("BTC");
+
                 Assert.True(user.BitPay.TestAccess(Facade.Merchant));
 
+                // Test request pairing code client side
+                var storeController = user.GetController<StoresController>();
+                storeController.CreateToken(new CreateTokenViewModel()
+                {
+                    Facade = Facade.Merchant.ToString(),
+                    Label = "test2",
+                    StoreId = user.StoreId
+                }).GetAwaiter().GetResult();
+                Assert.NotNull(storeController.GeneratedPairingCode);
+
+
+                var k = new Key();
+                var bitpay = new Bitpay(k, tester.PayTester.ServerUri);
+                bitpay.AuthorizeClient(new PairingCode(storeController.GeneratedPairingCode)).Wait();
+                Assert.True(bitpay.TestAccess(Facade.Merchant));
+                Assert.True(bitpay.TestAccess(Facade.PointOfSale));
+                // Same with new instance
+                bitpay = new Bitpay(k, tester.PayTester.ServerUri);
+                Assert.True(bitpay.TestAccess(Facade.Merchant));
+                Assert.True(bitpay.TestAccess(Facade.PointOfSale));
+
                 // Can generate API Key
                 var repo = tester.PayTester.GetService<TokenRepository>();
                 Assert.Empty(repo.GetLegacyAPIKeys(user.StoreId).GetAwaiter().GetResult());
@@ -1262,7 +1285,7 @@ namespace BTCPayServer.Tests
                 Assert.Equal("orange", vmview.Items[1].Title);
                 Assert.Equal(10.0m, vmview.Items[1].Price.Value);
                 Assert.Equal("$5.00", vmview.Items[0].Price.Formatted);
-                Assert.IsType<RedirectResult>(apps.ViewPointOfSale(appId, 0, "orange").Result);
+                Assert.IsType<RedirectResult>(apps.ViewPointOfSale(appId, 0, null, null, null, null, "orange").Result);
                 var invoice = user.BitPay.GetInvoices().First();
                 Assert.Equal(10.00m, invoice.Price);
                 Assert.Equal("CAD", invoice.Currency);
@@ -1325,6 +1348,8 @@ namespace BTCPayServer.Tests
                 var repo = tester.PayTester.GetService<InvoiceRepository>();
                 var ctx = tester.PayTester.GetService<ApplicationDbContextFactory>().CreateContext();
                 Assert.Equal(0, invoice.CryptoInfo[0].TxCount);
+                Assert.True(invoice.MinerFees.ContainsKey("BTC"));
+                Assert.Equal(100m, invoice.MinerFees["BTC"].SatoshiPerBytes);
                 Eventually(() =>
                 {
                     var textSearchResult = tester.PayTester.InvoiceRepository.GetInvoices(new InvoiceQuery()
@@ -1464,10 +1489,10 @@ namespace BTCPayServer.Tests
             var quadri = new QuadrigacxRateProvider();
             var rates = quadri.GetRatesAsync().GetAwaiter().GetResult();
             Assert.NotEmpty(rates);
-            Assert.NotEqual(0.0m, rates.First().Value);
-            Assert.NotEqual(0.0m, rates.GetRate(QuadrigacxRateProvider.QuadrigacxName, CurrencyPair.Parse("BTC_CAD")).Value);
-            Assert.NotEqual(0.0m, rates.GetRate(QuadrigacxRateProvider.QuadrigacxName, CurrencyPair.Parse("BTC_USD")).Value);
-            Assert.NotEqual(0.0m, rates.GetRate(QuadrigacxRateProvider.QuadrigacxName, CurrencyPair.Parse("LTC_CAD")).Value);
+            Assert.NotEqual(0.0m, rates.First().BidAsk.Bid);
+            Assert.NotEqual(0.0m, rates.GetRate(QuadrigacxRateProvider.QuadrigacxName, CurrencyPair.Parse("BTC_CAD")).Bid);
+            Assert.NotEqual(0.0m, rates.GetRate(QuadrigacxRateProvider.QuadrigacxName, CurrencyPair.Parse("BTC_USD")).Bid);
+            Assert.NotEqual(0.0m, rates.GetRate(QuadrigacxRateProvider.QuadrigacxName, CurrencyPair.Parse("LTC_CAD")).Bid);
             Assert.Null(rates.GetRate(QuadrigacxRateProvider.QuadrigacxName, CurrencyPair.Parse("LTC_USD")));
         }
 
@@ -1492,7 +1517,7 @@ namespace BTCPayServer.Tests
                         e => (e.CurrencyPair == new CurrencyPair("BTC", "USD") ||
                                e.CurrencyPair == new CurrencyPair("BTC", "EUR") ||
                                e.CurrencyPair == new CurrencyPair("BTC", "USDT"))
-                               && e.Value > 1.0m // 1BTC will always be more than 1USD
+                               && e.BidAsk.Bid > 1.0m // 1BTC will always be more than 1USD
                                );
             }
         }

BTCPayServer.Tests/docker-compose.yml

@@ -46,7 +46,7 @@ services:
       - lightning-charged
 
   nbxplorer:
-    image: nicolasdorier/nbxplorer:1.0.2.6
+    image: nicolasdorier/nbxplorer:1.0.2.8
     ports:
       - "32838:32838"
     expose: 
@@ -89,7 +89,7 @@ services:
       - "bitcoin_datadir:/data"
 
   customer_lightningd:
-    image: nicolasdorier/clightning:0.0.0.16-dev
+    image: nicolasdorier/clightning:0.0.0.21-dev
     environment: 
       EXPOSE_TCP: "true"
       LIGHTNINGD_OPT: |
@@ -112,7 +112,7 @@ services:
       - bitcoind
 
   lightning-charged:
-    image: shesek/lightning-charge:0.3.9
+    image: shesek/lightning-charge:0.3.12
     environment:
       NETWORK: regtest
       API_TOKEN: foiewnccewuify
@@ -131,7 +131,7 @@ services:
       - merchant_lightningd
 
   merchant_lightningd:
-    image: nicolasdorier/clightning:0.0.0.14-dev
+    image: nicolasdorier/clightning:0.0.0.21-dev
     environment: 
       EXPOSE_TCP: "true"
       LIGHTNINGD_OPT: |

BTCPayServer/BTCPayNetworkProvider.Feathercoin.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Services.Rates;
+using NBitcoin;
+using NBXplorer;
+
+namespace BTCPayServer
+{
+    public partial class BTCPayNetworkProvider
+    {
+        public void InitFeathercoin()
+        {
+            var nbxplorerNetwork = NBXplorerNetworkProvider.GetFromCryptoCode("FTC");
+            Add(new BTCPayNetwork()
+            {
+                CryptoCode = nbxplorerNetwork.CryptoCode,
+                BlockExplorerLink = NetworkType == NetworkType.Mainnet ? "https://explorer.feathercoin.com/tx/{0}" : "https://explorer.feathercoin.com/tx/{0}",
+                NBitcoinNetwork = nbxplorerNetwork.NBitcoinNetwork,
+                NBXplorerNetwork = nbxplorerNetwork,
+                UriScheme = "feathercoin",
+                DefaultRateRules = new[] 
+                {
+                                "FTC_X = FTC_BTC * BTC_X",
+                                "FTC_BTC = bittrex(FTC_BTC)"
+                },
+                CryptoImagePath = "imlegacy/feathercoin.png",
+                DefaultSettings = BTCPayDefaultSettings.GetDefaultSettings(NetworkType),
+                CoinType = NetworkType == NetworkType.Mainnet ? new KeyPath("8'") : new KeyPath("1'")
+            });
+        }
+    }
+}

BTCPayServer/BTCPayNetworkProvider.Groestlcoin.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using NBitcoin;
+
+namespace BTCPayServer
+{
+    public partial class BTCPayNetworkProvider
+    {
+        public void InitGroestlcoin()
+        {
+
+            var nbxplorerNetwork = NBXplorerNetworkProvider.GetFromCryptoCode("GRS");
+            Add(new BTCPayNetwork()
+            {
+                CryptoCode = nbxplorerNetwork.CryptoCode,
+                BlockExplorerLink = NetworkType == NetworkType.Mainnet ? "https://chainz.cryptoid.info/grs/tx.dws?{0}.htm" : "https://chainz.cryptoid.info/grs-test/tx.dws?{0}.htm",
+                NBitcoinNetwork = nbxplorerNetwork.NBitcoinNetwork,
+                NBXplorerNetwork = nbxplorerNetwork,
+                UriScheme = "groestlcoin",
+                DefaultRateRules = new[]
+                {
+                                "GRS_X = GRS_BTC * BTC_X",
+                                "GRS_BTC = bittrex(GRS_BTC)"
+                },
+                CryptoImagePath = "imlegacy/groestlcoin.png",
+                DefaultSettings = BTCPayDefaultSettings.GetDefaultSettings(NetworkType),
+                CoinType = NetworkType == NetworkType.Mainnet ? new KeyPath("17'") : new KeyPath("1'")
+            });
+        }
+    }
+}

BTCPayServer/BTCPayNetworkProvider.Polis.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Services.Rates;
+using NBitcoin;
+using NBXplorer;
+
+namespace BTCPayServer
+{
+    public partial class BTCPayNetworkProvider
+    {
+        public void InitPolis()
+        {
+            var nbxplorerNetwork = NBXplorerNetworkProvider.GetFromCryptoCode("POLIS");
+            Add(new BTCPayNetwork()
+            {
+                CryptoCode = nbxplorerNetwork.CryptoCode,
+                BlockExplorerLink = NetworkType == NetworkType.Mainnet ? "https://insight.polispay.org/tx/{0}" : "https://insight.polispay.org/tx/{0}",
+                NBitcoinNetwork = nbxplorerNetwork.NBitcoinNetwork,
+                NBXplorerNetwork = nbxplorerNetwork,
+                UriScheme = "polis",
+                DefaultRateRules = new[]
+                {
+                                "POLIS_X = POLIS_BTC * BTC_X",
+                                "POLIS_BTC = cryptopia(POLIS_BTC)"
+                },
+                CryptoImagePath = "imlegacy/polis.png",
+                DefaultSettings = BTCPayDefaultSettings.GetDefaultSettings(NetworkType),
+                CoinType = NetworkType == NetworkType.Mainnet ? new KeyPath("1997'") : new KeyPath("1'")
+            });
+        }
+    }
+}

BTCPayServer/BTCPayNetworkProvider.Ufo.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Services.Rates;
+using NBitcoin;
+using NBXplorer;
+
+namespace BTCPayServer
+{
+    public partial class BTCPayNetworkProvider
+    {
+        public void InitUfo()
+        {
+            var nbxplorerNetwork = NBXplorerNetworkProvider.GetFromCryptoCode("UFO");
+            Add(new BTCPayNetwork()
+            {
+                CryptoCode = nbxplorerNetwork.CryptoCode,
+                BlockExplorerLink = NetworkType == NetworkType.Mainnet ? "https://chainz.cryptoid.info/ufo/tx.dws?{0}" : "https://chainz.cryptoid.info/ufo/tx.dws?{0}",
+                NBitcoinNetwork = nbxplorerNetwork.NBitcoinNetwork,
+                NBXplorerNetwork = nbxplorerNetwork,
+                UriScheme = "ufo",
+                DefaultRateRules = new[] 
+                {
+                                "UFO_X = UFO_BTC * BTC_X",
+                                "UFO_BTC = coinexchange(UFO_BTC)"
+                },
+                CryptoImagePath = "imlegacy/ufo.png",
+                DefaultSettings = BTCPayDefaultSettings.GetDefaultSettings(NetworkType),
+                CoinType = NetworkType == NetworkType.Mainnet ? new KeyPath("202'") : new KeyPath("1'")
+            });
+        }
+    }
+}

BTCPayServer/BTCPayNetworkProvider.cs

@@ -50,6 +50,10 @@ namespace BTCPayServer
             InitDogecoin();
             InitBitcoinGold();
             InitMonacoin();
+            InitPolis();
+            InitFeathercoin();
+            InitGroestlcoin();
+            InitUfo();
         }
 
         /// <summary>

BTCPayServer/BTCPayServer.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp2.1</TargetFramework>
-		<Version>1.0.2.25</Version>
+		<Version>1.0.2.35</Version>
     <NoWarn>NU1701,CA1816,CA1308,CA1810,CA2208</NoWarn>
   </PropertyGroup>
   <ItemGroup>
@@ -37,24 +37,24 @@
     <PackageReference Include="Hangfire.PostgreSql" Version="1.4.8.2" />
     <PackageReference Include="LedgerWallet" Version="1.0.1.36" />
     <PackageReference Include="Meziantou.AspNetCore.BundleTagHelpers" Version="2.0.0" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.0-rc1-final" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Filter" Version="1.1.2" />
     <PackageReference Include="Microsoft.NetCore.Analyzers" Version="2.6.0" />
-    <PackageReference Include="NBitcoin" Version="4.1.1.7" />
-    <PackageReference Include="NBitpayClient" Version="1.0.0.23" />	  
+    <PackageReference Include="NBitcoin" Version="4.1.1.18" />
+    <PackageReference Include="NBitpayClient" Version="1.0.0.29" />	  
     <PackageReference Include="DBreeze" Version="1.87.0" />
-    <PackageReference Include="NBXplorer.Client" Version="1.0.2.8" />
-    <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="2.1-rc1" />
+    <PackageReference Include="NBXplorer.Client" Version="1.0.2.11" />
+    <PackageReference Include="NicolasDorier.CommandLine" Version="1.0.0.2" />
+    <PackageReference Include="NicolasDorier.CommandLine.Configuration" Version="1.0.0.3" />
+    <PackageReference Include="NicolasDorier.StandardConfiguration" Version="1.0.0.14" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="2.1.0" />
     <PackageReference Include="System.Xml.XmlSerializer" Version="4.3.0" />
     <PackageReference Include="Text.Analyzers" Version="2.6.0" />
   </ItemGroup>
 
 	<ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.0-rc1-final" />
-		<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version=" 2.1.0-rc1-final" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.0" />
+		<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version=" 2.1.0" PrivateAssets="All" />
 		<PackageReference Include="YamlDotNet" Version="4.3.1" />
 	</ItemGroup>
 

BTCPayServer/Controllers/AccessTokenController.cs

@@ -12,7 +12,8 @@ using System.Threading.Tasks;
 
 namespace BTCPayServer.Controllers
 {
-    [BitpayAPIConstraint]
+    [Authorize(AuthenticationSchemes = Security.Policies.BitpayAuthentication)]
+    [BitpayAPIConstraint(true)]
     public class AccessTokenController : Controller
     {
         TokenRepository _TokenRepository;
@@ -30,6 +31,7 @@ namespace BTCPayServer.Controllers
 
         [HttpPost]
         [Route("tokens")]
+        [AllowAnonymous]
         public async Task<DataWrapper<List<PairingCodeResponse>>> Tokens([FromBody] TokenRequest request)
         {
             PairingCodeEntity pairingEntity = null;
@@ -53,7 +55,7 @@ namespace BTCPayServer.Controllers
             else
             {
                 var sin = this.User.GetSIN() ?? request.Id;
-                if (string.IsNullOrEmpty(request.Id) || !NBitpayClient.Extensions.BitIdExtensions.ValidateSIN(request.Id))
+                if (string.IsNullOrEmpty(sin) || !NBitpayClient.Extensions.BitIdExtensions.ValidateSIN(sin))
                     throw new BitpayHttpException(400, "'id' property is required, alternatively, use BitId");
 
                 pairingEntity = await _TokenRepository.GetPairingAsync(request.PairingCode);
@@ -77,6 +79,7 @@ namespace BTCPayServer.Controllers
                 {
                     new PairingCodeResponse()
                     {
+                        Policies = new Newtonsoft.Json.Linq.JArray(),
                         PairingCode = pairingEntity.Id,
                         PairingExpiration = pairingEntity.Expiration,
                         DateCreated = pairingEntity.CreatedTime,

BTCPayServer/Controllers/AppsController.PointOfSale.cs

@@ -17,6 +17,8 @@ using YamlDotNet.RepresentationModel;
 using System.IO;
 using BTCPayServer.Services.Rates;
 using System.Globalization;
+using System.Text;
+using System.Text.Encodings.Web;
 
 namespace BTCPayServer.Controllers
 {
@@ -57,9 +59,50 @@ namespace BTCPayServer.Controllers
             var app = await GetOwnedApp(appId, AppType.PointOfSale);
             if (app == null)
                 return NotFound();
-
             var settings = app.GetSettings<PointOfSaleSettings>();
-            return View(new UpdatePointOfSaleViewModel() { Title = settings.Title, ShowCustomAmount = settings.ShowCustomAmount, Currency = settings.Currency, Template = settings.Template });
+            var vm = new UpdatePointOfSaleViewModel()
+            {
+                Title = settings.Title,
+                ShowCustomAmount = settings.ShowCustomAmount,
+                Currency = settings.Currency,
+                Template = settings.Template
+            };
+            if (HttpContext?.Request != null)
+            {
+                var appUrl = HttpContext.Request.GetAbsoluteRoot().WithTrailingSlash() + $"apps/{appId}/pos";
+                var encoder = HtmlEncoder.Default;
+                if (settings.ShowCustomAmount)
+                {
+                    StringBuilder builder = new StringBuilder();
+                    builder.AppendLine($"<form method=\"POST\" action=\"{encoder.Encode(appUrl)}\">");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"amount\" value=\"100\" />");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"email\" value=\"customer@example.com\" />");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"orderId\" value=\"CustomOrderId\" />");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"notificationUrl\" value=\"https://example.com/callbacks\" />");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"redirectUrl\" value=\"https://example.com/thanksyou\" />");
+                    builder.AppendLine($"  <button type=\"submit\">Buy now</button>");
+                    builder.AppendLine($"</form>");
+                    vm.Example1 = builder.ToString();
+                }
+                try
+                {
+                    var items = Parse(settings.Template, settings.Currency);
+                    var builder = new StringBuilder();
+                    builder.AppendLine($"<form method=\"POST\" action=\"{encoder.Encode(appUrl)}\">");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"email\" value=\"customer@example.com\" />");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"orderId\" value=\"CustomOrderId\" />");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"notificationUrl\" value=\"https://example.com/callbacks\" />");
+                    builder.AppendLine($"  <input type=\"hidden\" name=\"redirectUrl\" value=\"https://example.com/thanksyou\" />");
+                    builder.AppendLine($"  <button type=\"submit\" name=\"choiceKey\" value=\"{items[0].Id}\">Buy now</button>");
+                    builder.AppendLine($"</form>");
+                    vm.Example2 = builder.ToString();
+                }
+                catch { }
+                vm.InvoiceUrl = appUrl + "invoices/SkdsDghkdP3D3qkj7bLq3";
+            }
+
+            vm.ExampleCallback = "{\n  \"id\":\"SkdsDghkdP3D3qkj7bLq3\",\n  \"url\":\"https://btcpay.example.com/invoice?id=SkdsDghkdP3D3qkj7bLq3\",\n  \"status\":\"paid\",\n  \"price\":10,\n  \"currency\":\"EUR\",\n  \"invoiceTime\":1520373130312,\n  \"expirationTime\":1520374030312,\n  \"currentTime\":1520373179327,\n  \"exceptionStatus\":false,\n  \"buyerFields\":{\n    \"buyerEmail\":\"customer@example.com\",\n    \"buyerNotify\":false\n  },\n  \"paymentSubtotals\": {\n    \"BTC\":114700\n  },\n  \"paymentTotals\": {\n    \"BTC\":118400\n  },\n  \"transactionCurrency\": \"BTC\",\n  \"amountPaid\": \"1025900\",\n  \"exchangeRates\": {\n    \"BTC\": {\n      \"EUR\": 8721.690715789999,\n      \"USD\": 10817.99\n    }\n  }\n}";
+            return View(vm);
         }
         [HttpPost]
         [Route("{appId}/settings/pos")]
@@ -104,6 +147,7 @@ namespace BTCPayServer.Controllers
             var settings = app.GetSettings<PointOfSaleSettings>();
             var currency = _Currencies.GetCurrencyData(settings.Currency, false);
             double step = currency == null ? 1 : Math.Pow(10, -(currency.Divisibility));
+
             return View(new ViewPointOfSaleViewModel()
             {
                 Title = settings.Title,
@@ -163,7 +207,13 @@ namespace BTCPayServer.Controllers
         [HttpPost]
         [Route("{appId}/pos")]
         [IgnoreAntiforgeryToken]
-        public async Task<IActionResult> ViewPointOfSale(string appId, decimal amount, string choiceKey)
+        public async Task<IActionResult> ViewPointOfSale(string appId,
+                                                        decimal amount,
+                                                        string email,
+                                                        string orderId,
+                                                        string notificationUrl,
+                                                        string redirectUrl,
+                                                        string choiceKey)
         {
             var app = await GetApp(appId, AppType.PointOfSale);
             if (string.IsNullOrEmpty(choiceKey) && amount <= 0)
@@ -173,7 +223,7 @@ namespace BTCPayServer.Controllers
             if (app == null)
                 return NotFound();
             var settings = app.GetSettings<PointOfSaleSettings>();
-            if(string.IsNullOrEmpty(choiceKey) && !settings.ShowCustomAmount)
+            if (string.IsNullOrEmpty(choiceKey) && !settings.ShowCustomAmount)
             {
                 return RedirectToAction(nameof(ViewPointOfSale), new { appId = appId });
             }
@@ -190,16 +240,22 @@ namespace BTCPayServer.Controllers
             }
             else
             {
+                if (!settings.ShowCustomAmount)
+                    return NotFound();
                 price = amount;
                 title = settings.Title;
             }
-
             var store = await GetStore(app);
             var invoice = await _InvoiceController.CreateInvoiceCore(new NBitpayClient.Invoice()
             {
                 ItemDesc = title,
                 Currency = settings.Currency,
                 Price = price,
+                BuyerEmail = email,
+                OrderId = orderId,
+                NotificationURL = notificationUrl,
+                RedirectURL = redirectUrl,
+                FullNotifications = true
             }, store, HttpContext.Request.GetAbsoluteRoot());
             return Redirect(invoice.Data.Url);
         }

BTCPayServer/Controllers/InvoiceController.API.cs

@@ -20,7 +20,7 @@ namespace BTCPayServer.Controllers
 {
     [EnableCors("BitpayAPI")]
     [BitpayAPIConstraint]
-    [Authorize(Policies.CanUseStore.Key)]
+    [Authorize(Policies.CanUseStore.Key, AuthenticationSchemes = Policies.BitpayAuthentication)]
     public class InvoiceControllerAPI : Controller
     {
         private InvoiceController _InvoiceController;

BTCPayServer/Controllers/InvoiceController.PaymentProtocol.cs

@@ -78,7 +78,7 @@ namespace BTCPayServer.Controllers
             var wallet = _WalletProvider.GetWallet(network);
             if (wallet == null)
                 return NotFound();
-            var payment = PaymentMessage.Load(Request.Body);
+            var payment = PaymentMessage.Load(Request.Body, network.NBitcoinNetwork);
             var unused = wallet.BroadcastTransactionsAsync(payment.Transactions);
             await _InvoiceRepository.AddRefundsAsync(invoiceId, payment.RefundTo.Select(p => new TxOut(p.Amount, p.Script)).ToArray(), network.NBitcoinNetwork);
             return new PaymentAckActionResult(payment.CreateACK(invoiceId + " is currently processing, thanks for your purchase..."));

BTCPayServer/Controllers/InvoiceController.UI.cs

@@ -356,7 +356,7 @@ namespace BTCPayServer.Controllers
             {
                 leases.Add(_EventAggregator.Subscribe<Events.InvoiceDataChangedEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId)));
                 leases.Add(_EventAggregator.Subscribe<Events.InvoiceNewAddressEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId)));
-                leases.Add(_EventAggregator.Subscribe<Events.InvoiceEvent>(async o => await NotifySocket(webSocket, o.InvoiceId, invoiceId)));
+                leases.Add(_EventAggregator.Subscribe<Events.InvoiceEvent>(async o => await NotifySocket(webSocket, o.Invoice.Id, invoiceId)));
                 while (true)
                 {
                     var message = await webSocket.ReceiveAsync(DummyBuffer, default(CancellationToken));
@@ -425,7 +425,7 @@ namespace BTCPayServer.Controllers
                 {
                     Status = invoice.Status + (invoice.ExceptionStatus == null ? string.Empty : $" ({invoice.ExceptionStatus})"),
                     ShowCheckout = invoice.Status == "new",
-                    Date = (DateTimeOffset.UtcNow - invoice.InvoiceTime).Prettify() + " ago",
+                    Date = invoice.InvoiceTime,
                     InvoiceId = invoice.Id,
                     OrderId = invoice.OrderId ?? string.Empty,
                     RedirectUrl = invoice.RedirectURL ?? string.Empty,
@@ -535,8 +535,11 @@ namespace BTCPayServer.Controllers
         [BitpayAPIConstraint(false)]
         public async Task<IActionResult> InvalidatePaidInvoice(string invoiceId)
         {
+            var invoice = await _InvoiceRepository.GetInvoice(null, invoiceId);
+            if (invoice == null)
+                return NotFound();
             await _InvoiceRepository.UpdatePaidInvoiceToInvalid(invoiceId);
-            _EventAggregator.Publish(new InvoiceEvent(invoiceId, 1008, "invoice_markedInvalid"));
+            _EventAggregator.Publish(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1008, "invoice_markedInvalid"));
             return RedirectToAction(nameof(ListInvoices));
         }
 

BTCPayServer/Controllers/InvoiceController.cs

@@ -109,6 +109,9 @@ namespace BTCPayServer.Controllers
             }
             entity.ProductInformation = Map<Invoice, ProductInformation>(invoice);
             entity.RedirectURL = invoice.RedirectURL ?? store.StoreWebsite;
+            if (!Uri.IsWellFormedUriString(entity.RedirectURL, UriKind.Absolute))
+                entity.RedirectURL = null;
+
             entity.Status = "new";
             entity.SpeedPolicy = ParseSpeedPolicy(invoice.TransactionSpeed, store.SpeedPolicy);
 
@@ -206,7 +209,7 @@ namespace BTCPayServer.Controllers
             entity.PosData = invoice.PosData;
             entity = await _InvoiceRepository.CreateInvoiceAsync(store.Id, entity, paymentMethodErrors, _NetworkProvider);
 
-            _EventAggregator.Publish(new Events.InvoiceEvent(entity, 1001, "invoice_created"));
+            _EventAggregator.Publish(new Events.InvoiceEvent(entity.EntityToDTO(_NetworkProvider), 1001, "invoice_created"));
             var resp = entity.EntityToDTO(_NetworkProvider);
             return new DataWrapper<InvoiceResponse>(resp) { Facade = "pos/invoice" };
         }

BTCPayServer/Data/ApplicationDbContextFactory.cs

@@ -6,6 +6,11 @@ using System.Threading.Tasks;
 using Hangfire;
 using Hangfire.MemoryStorage;
 using Hangfire.PostgreSql;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Migrations;
+using JetBrains.Annotations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Migrations.Operations;
+using Microsoft.EntityFrameworkCore.Metadata;
 
 namespace BTCPayServer.Data
 {
@@ -31,12 +36,56 @@ namespace BTCPayServer.Data
             return new ApplicationDbContext(builder.Options);
         }
 
+        class CustomNpgsqlMigrationsSqlGenerator : NpgsqlMigrationsSqlGenerator
+        {
+            public CustomNpgsqlMigrationsSqlGenerator(MigrationsSqlGeneratorDependencies dependencies) : base(dependencies)
+            {
+            }
+
+            protected override void Generate(NpgsqlCreateDatabaseOperation operation, IModel model, MigrationCommandListBuilder builder)
+            {
+                builder
+                     .Append("CREATE DATABASE ")
+                     .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name));
+
+                // POSTGRES gotcha: Indexed Text column (even if PK) are not used if we are not using C locale
+                builder
+                    .Append(" TEMPLATE ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("template0"));
+
+                builder
+                    .Append(" LC_CTYPE ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("C"));
+
+                builder
+                    .Append(" LC_COLLATE ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("C"));
+
+                builder
+                    .Append(" ENCODING ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("UTF8"));
+
+                if (operation.Tablespace != null)
+                {
+                    builder
+                        .Append(" TABLESPACE ")
+                        .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Tablespace));
+                }
+
+                builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
+
+                EndStatement(builder, suppressTransaction: true);
+            }
+        }
+
         public void ConfigureBuilder(DbContextOptionsBuilder builder)
         {
             if (_Type == DatabaseType.Sqlite)
                 builder.UseSqlite(_ConnectionString);
             else if (_Type == DatabaseType.Postgres)
-                builder.UseNpgsql(_ConnectionString);
+                builder
+                    .UseNpgsql(_ConnectionString)
+                    .ReplaceService<IMigrationsSqlGenerator, CustomNpgsqlMigrationsSqlGenerator>();
         }
 
         public void ConfigureHangfireBuilder(IGlobalConfiguration builder)

BTCPayServer/DerivationSchemeParser.cs

@@ -72,7 +72,7 @@ namespace BTCPayServer
                 }
                 try
                 {
-                    var data = Encoders.Base58Check.DecodeData(parts[i]);
+                    var data = Network.GetBase58CheckEncoder().DecodeData(parts[i]);
                     if (data.Length < 4)
                         continue;
                     var prefix = Utils.ToUInt32(data, false);
@@ -80,7 +80,7 @@ namespace BTCPayServer
                     for (int ii = 0; ii < 4; ii++)
                         data[ii] = standardPrefix[ii];
 
-                    var derivationScheme = new BitcoinExtPubKey(Encoders.Base58Check.EncodeData(data), Network).ToString();
+                    var derivationScheme = new BitcoinExtPubKey(Network.GetBase58CheckEncoder().EncodeData(data), Network).ToString();
                     electrumMapping.TryGetValue(prefix, out string[] labels);
                     if (labels != null)
                     {

BTCPayServer/Events/InvoiceEvent.cs

@@ -8,24 +8,20 @@ namespace BTCPayServer.Events
 {
     public class InvoiceEvent
     {
-        public InvoiceEvent(InvoiceEntity invoice, int code, string name) : this(invoice.Id, code, name)
+        public InvoiceEvent(Models.InvoiceResponse invoice, int code, string name)
         {
-
-        }
-        public InvoiceEvent(string invoiceId, int code, string name)
-        {
-            InvoiceId = invoiceId;
+            Invoice = invoice;
             EventCode = code;
             Name = name;
         }
 
-        public string InvoiceId { get; set; }
+        public Models.InvoiceResponse Invoice { get; set; }
         public int EventCode { get; set; }
         public string Name { get; set; }
 
         public override string ToString()
         {
-            return $"Invoice {InvoiceId} new event: {Name} ({EventCode})";
+            return $"Invoice {Invoice.Id} new event: {Name} ({EventCode})";
         }
     }
 }

BTCPayServer/Extensions.cs

@@ -36,28 +36,6 @@ namespace BTCPayServer
 {
     public static class Extensions
     {
-        public static string Prettify(this TimeSpan timeSpan)
-        {
-            if (timeSpan.TotalMinutes < 1)
-            {
-                return $"{(int)timeSpan.TotalSeconds} second{Plural((int)timeSpan.TotalSeconds)}";
-            }
-            if (timeSpan.TotalHours < 1)
-            {
-                return $"{(int)timeSpan.TotalMinutes} minute{Plural((int)timeSpan.TotalMinutes)}";
-            }
-            if (timeSpan.Days < 1)
-            {
-                return $"{(int)timeSpan.TotalHours} hour{Plural((int)timeSpan.TotalHours)}";
-            }
-            return $"{(int)timeSpan.TotalDays} day{Plural((int)timeSpan.TotalDays)}";
-        }
-
-        private static string Plural(int totalDays)
-        {
-            return totalDays > 1 ? "s" : string.Empty;
-        }
-
         public static string PrettyPrint(this TimeSpan expiration)
         {
             StringBuilder builder = new StringBuilder();

BTCPayServer/HostedServices/InvoiceNotificationManager.cs

@@ -308,7 +308,7 @@ namespace BTCPayServer.HostedServices
         {
             leases.Add(_EventAggregator.Subscribe<InvoiceEvent>(async e =>
             {
-                var invoice = await _InvoiceRepository.GetInvoice(null, e.InvoiceId);
+                var invoice = await _InvoiceRepository.GetInvoice(null, e.Invoice.Id);
                 List<Task> tasks = new List<Task>();
 
                 // Awaiting this later help make sure invoices should arrive in order

BTCPayServer/HostedServices/InvoiceWatcher.cs

@@ -66,10 +66,10 @@ namespace BTCPayServer.HostedServices
                 context.MarkDirty();
                 await _InvoiceRepository.UnaffectAddress(invoice.Id);
 
-                context.Events.Add(new InvoiceEvent(invoice, 1004, "invoice_expired"));
+                context.Events.Add(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1004, "invoice_expired"));
                 invoice.Status = "expired";
                 if(invoice.ExceptionStatus == "paidPartial")
-                    context.Events.Add(new InvoiceEvent(invoice, 2000, "invoice_expiredPaidPartial"));
+                    context.Events.Add(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 2000, "invoice_expiredPaidPartial"));
             }
 
             var payments = invoice.GetPayments().Where(p => p.Accounted).ToArray();
@@ -84,7 +84,7 @@ namespace BTCPayServer.HostedServices
                 {
                     if (invoice.Status == "new")
                     {
-                        context.Events.Add(new InvoiceEvent(invoice, 1003, "invoice_paidInFull"));
+                        context.Events.Add(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1003, "invoice_paidInFull"));
                         invoice.Status = "paid";
                         invoice.ExceptionStatus = accounting.Paid > accounting.TotalDue ? "paidOver" : null;
                         await _InvoiceRepository.UnaffectAddress(invoice.Id);
@@ -93,7 +93,7 @@ namespace BTCPayServer.HostedServices
                     else if (invoice.Status == "expired" && invoice.ExceptionStatus != "paidLate")
                     {
                         invoice.ExceptionStatus = "paidLate";
-                        context.Events.Add(new InvoiceEvent(invoice, 1009, "invoice_paidAfterExpiration"));
+                        context.Events.Add(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1009, "invoice_paidAfterExpiration"));
                         context.MarkDirty();
                     }
                 }
@@ -139,14 +139,14 @@ namespace BTCPayServer.HostedServices
                    (confirmedAccounting.Paid < accounting.MinimumTotalDue))
                 {
                     await _InvoiceRepository.UnaffectAddress(invoice.Id);
-                    context.Events.Add(new InvoiceEvent(invoice, 1013, "invoice_failedToConfirm"));
+                    context.Events.Add(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1013, "invoice_failedToConfirm"));
                     invoice.Status = "invalid";
                     context.MarkDirty();
                 }
                 else if (confirmedAccounting.Paid >= accounting.MinimumTotalDue)
                 {
                     await _InvoiceRepository.UnaffectAddress(invoice.Id);
-                    context.Events.Add(new InvoiceEvent(invoice, 1005, "invoice_confirmed"));
+                    context.Events.Add(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1005, "invoice_confirmed"));
                     invoice.Status = "confirmed";
                     context.MarkDirty();
                 }
@@ -157,7 +157,7 @@ namespace BTCPayServer.HostedServices
                 var completedAccounting = paymentMethod.Calculate(p => p.GetCryptoPaymentData().PaymentCompleted(p, network));
                 if (completedAccounting.Paid >= accounting.MinimumTotalDue)
                 {
-                    context.Events.Add(new InvoiceEvent(invoice, 1006, "invoice_completed"));
+                    context.Events.Add(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1006, "invoice_completed"));
                     invoice.Status = "complete";
                     context.MarkDirty();
                 }
@@ -249,13 +249,13 @@ namespace BTCPayServer.HostedServices
             {
                 if (b.Name == "invoice_created")
                 {
-                    Watch(b.InvoiceId);
-                    await Wait(b.InvoiceId);
+                    Watch(b.Invoice.Id);
+                    await Wait(b.Invoice.Id);
                 }
 
                 if (b.Name == "invoice_receivedPayment")
                 {
-                    Watch(b.InvoiceId);
+                    Watch(b.Invoice.Id);
                 }
             }));
             return Task.CompletedTask;

BTCPayServer/Hosting/BTCPayServerServices.cs

@@ -117,7 +117,6 @@ namespace BTCPayServer.Hosting
             services.AddSingleton<IHostedService, InvoiceWatcher>();
             services.AddSingleton<IHostedService, RatesHostedService>();
             services.AddTransient<IConfigureOptions<MvcOptions>, BTCPayClaimsFilter>();
-            services.AddTransient<IConfigureOptions<MvcOptions>, BitpayClaimsFilter>();
 
             services.TryAddSingleton<ExplorerClientProvider>();
             services.TryAddSingleton<Bitpay>(o =>
@@ -137,6 +136,7 @@ namespace BTCPayServer.Hosting
             // bundling
 
             services.AddAuthorization(o => Policies.AddBTCPayPolicies(o));
+            BitpayAuthentication.AddAuthentication(services);
 
             services.AddBundles();
             services.AddTransient<BundleOptions>(provider =>

BTCPayServer/Models/AppViewModels/UpdatePointOfSaleViewModel.cs

@@ -20,5 +20,9 @@ namespace BTCPayServer.Models.AppViewModels
 
         [Display(Name = "User can input custom amount")]
         public bool ShowCustomAmount { get; set; }
+        public string Example1 { get; internal set; }
+        public string Example2 { get; internal set; }
+        public string ExampleCallback { get; internal set; }
+        public string InvoiceUrl { get; internal set; }
     }
 }

BTCPayServer/Models/InvoiceResponse.cs

@@ -235,7 +235,7 @@ namespace BTCPayServer.Models
         public long AmountPaid { get; set; }
 
         [JsonProperty("minerFees")]
-        public long MinerFees { get; set; }
+        public Dictionary<string, NBitpayClient.MinerFeeInfo> MinerFees { get; set; }
 
         [JsonProperty("exchangeRates")]
         public Dictionary<string, Dictionary<string, decimal>> ExchangeRates { get; set; }

BTCPayServer/Models/InvoicingModels/InvoicesModel.cs

@@ -33,10 +33,7 @@ namespace BTCPayServer.Models.InvoicingModels
 
     public class InvoiceModel
     {
-        public string Date
-        {
-            get; set;
-        }
+        public DateTimeOffset Date { get; set; }
 
         public string OrderId { get; set; }
         public string RedirectUrl { get; set; }

BTCPayServer/Models/StoreViewModels/RatesViewModel.cs

@@ -44,7 +44,7 @@ namespace BTCPayServer.Models.StoreViewModels
         public string ScriptTest { get; set; }
         public CoinAverageExchange[] AvailableExchanges { get; set; }
 
-        [Display(Name = "Multiply the rate by ...")]
+        [Display(Name = "Multiply the rate by... (Setting to 1.01 would apply a discount of 1% to the purchase)")]
         [Range(0.01, 10.0)]
         public double RateMultiplier
         {

BTCPayServer/Models/TokenRequest.cs

@@ -3,6 +3,7 @@ using System;
 using System.Collections.Generic;
 using System.Text;
 using NBitcoin;
+using Newtonsoft.Json.Linq;
 
 namespace BTCPayServer.Models
 {
@@ -44,6 +45,9 @@ namespace BTCPayServer.Models
 
     public class PairingCodeResponse
     {
+        [JsonProperty(PropertyName = "policies")]
+        public JArray Policies { get; set; }
+
         [JsonProperty(PropertyName = "pairingCode")]
         public string PairingCode
         {

BTCPayServer/Payments/Bitcoin/NBXplorerListener.cs

@@ -161,7 +161,7 @@ namespace BTCPayServer.Payments.Bitcoin
                                             {
                                                 var payment = await _InvoiceRepository.AddPayment(invoice.Id, DateTimeOffset.UtcNow, paymentData, network.CryptoCode);
                                                 if(payment != null)
-                                                    await ReceivedPayment(wallet, invoice.Id, payment, evt.DerivationStrategy);
+                                                    await ReceivedPayment(wallet, invoice, payment, evt.DerivationStrategy);
                                             }
                                             else
                                             {
@@ -332,7 +332,7 @@ namespace BTCPayServer.Payments.Bitcoin
                     var payment = await _InvoiceRepository.AddPayment(invoice.Id, coin.Timestamp, paymentData, network.CryptoCode).ConfigureAwait(false);
                     alreadyAccounted.Add(coin.Coin.Outpoint);
                     if (payment != null)
-                        invoice = await ReceivedPayment(wallet, invoice.Id, payment, strategy);
+                        invoice = await ReceivedPayment(wallet, invoice, payment, strategy);
                     totalPayment++;
                 }
             }
@@ -346,10 +346,10 @@ namespace BTCPayServer.Payments.Bitcoin
                           .FirstOrDefault();
         }
 
-        private async Task<InvoiceEntity> ReceivedPayment(BTCPayWallet wallet, string invoiceId, PaymentEntity payment, DerivationStrategyBase strategy)
+        private async Task<InvoiceEntity> ReceivedPayment(BTCPayWallet wallet, InvoiceEntity invoice, PaymentEntity payment, DerivationStrategyBase strategy)
         {
             var paymentData = (BitcoinLikePaymentData)payment.GetCryptoPaymentData();
-            var invoice = (await UpdatePaymentStates(wallet, invoiceId));
+            invoice = (await UpdatePaymentStates(wallet, invoice.Id));
             var paymentMethod = invoice.GetPaymentMethod(wallet.Network, PaymentTypes.BTCLike, _ExplorerClients.NetworkProviders);
             if (paymentMethod != null &&
                 paymentMethod.GetPaymentMethodDetails() is BitcoinLikeOnChainPaymentMethod btc &&
@@ -358,13 +358,13 @@ namespace BTCPayServer.Payments.Bitcoin
             {
                 var address = await wallet.ReserveAddressAsync(strategy);
                 btc.DepositAddress = address.ToString();
-                await _InvoiceRepository.NewAddress(invoiceId, btc, wallet.Network);
-                _Aggregator.Publish(new InvoiceNewAddressEvent(invoiceId, address.ToString(), wallet.Network));
+                await _InvoiceRepository.NewAddress(invoice.Id, btc, wallet.Network);
+                _Aggregator.Publish(new InvoiceNewAddressEvent(invoice.Id, address.ToString(), wallet.Network));
                 paymentMethod.SetPaymentMethodDetails(btc);
                 invoice.SetPaymentMethod(paymentMethod);
             }
             wallet.InvalidateCache(strategy);
-            _Aggregator.Publish(new InvoiceEvent(invoiceId, 1002, "invoice_receivedPayment"));
+            _Aggregator.Publish(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1002, "invoice_receivedPayment"));
             return invoice;
         }
         public Task StopAsync(CancellationToken cancellationToken)

BTCPayServer/Payments/Lightning/LightningListener.cs

@@ -46,7 +46,7 @@ namespace BTCPayServer.Payments.Lightning
             {
                 if (inv.Name == "invoice_created")
                 {
-                    await EnsureListening(inv.InvoiceId, false);
+                    await EnsureListening(inv.Invoice.Id, false);
                 }
             }));
 
@@ -189,8 +189,12 @@ namespace BTCPayServer.Payments.Lightning
                 BOLT11 = notification.BOLT11,
                 Amount = notification.Amount
             }, network.CryptoCode, accounted: true);
-            if(payment != null)
-                _Aggregator.Publish(new InvoiceEvent(listenedInvoice.InvoiceId, 1002, "invoice_receivedPayment"));
+            if (payment != null)
+            {
+                var invoice = await _InvoiceRepository.GetInvoice(null, listenedInvoice.InvoiceId);
+                if(invoice != null)
+                    _Aggregator.Publish(new InvoiceEvent(invoice.EntityToDTO(_NetworkProvider), 1002, "invoice_receivedPayment"));
+            }
         }
 
         List<Task> _ListeningLightning = new List<Task>();

BTCPayServer/Rating/ExchangeRates.cs

@@ -41,9 +41,9 @@ namespace BTCPayServer.Rating
             }
             else
             {
-                if (rate.Value.HasValue)
+                if (rate.BidAsk != null)
                 {
-                    _AllRates[key].Value = rate.Value;
+                    _AllRates[key].BidAsk = rate.BidAsk;
                 }
             }
         }
@@ -58,39 +58,175 @@ namespace BTCPayServer.Rating
             return GetEnumerator();
         }
 
-        public void SetRate(string exchangeName, CurrencyPair currencyPair, decimal value)
+        public void SetRate(string exchangeName, CurrencyPair currencyPair, BidAsk bidAsk)
         {
             if (ByExchange.TryGetValue(exchangeName, out var rates))
             {
                 var rate = rates.FirstOrDefault(r => r.CurrencyPair == currencyPair);
-                if (rate != null)
-                    rate.Value = value;
+                if(rate != null)
+                {
+                    rate.BidAsk = bidAsk;
+                }
+                var invPair = currencyPair.Inverse();
+                var invRate = rates.FirstOrDefault(r => r.CurrencyPair == invPair);
+                if (invRate != null)
+                {
+                    invRate.BidAsk = bidAsk?.Inverse();
+                }
             }
         }
-        public decimal? GetRate(string exchangeName, CurrencyPair currencyPair)
+        public BidAsk GetRate(string exchangeName, CurrencyPair currencyPair)
         {
             if (currencyPair.Left == currencyPair.Right)
-                return 1.0m;
+                return BidAsk.One;
             if (ByExchange.TryGetValue(exchangeName, out var rates))
             {
                 var rate = rates.FirstOrDefault(r => r.CurrencyPair == currencyPair);
                 if (rate != null)
-                    return rate.Value;
+                    return rate.BidAsk;
             }
             return null;
         }
     }
+    public class BidAsk
+    {
+
+        private readonly static BidAsk _One = new BidAsk(1.0m);
+        public static BidAsk One
+        {
+            get
+            {
+                return _One;
+            }
+        }
+
+        private readonly static BidAsk _Zero = new BidAsk(0.0m);
+        public static BidAsk Zero
+        {
+            get
+            {
+                return _Zero;
+            }
+        }
+        public BidAsk(decimal bid, decimal ask)
+        {
+            if (bid > ask)
+                throw new ArgumentException("the bid should be lower than ask", nameof(bid));
+            _Ask = ask;
+            _Bid = bid;
+        }
+        public BidAsk(decimal v) : this(v, v)
+        {
+
+        }
+
+        private readonly decimal _Bid;
+        public decimal Bid
+        {
+            get
+            {
+                return _Bid;
+            }
+        }
+
+
+        private readonly decimal _Ask;
+        public decimal Ask
+        {
+            get
+            {
+                return _Ask;
+            }
+        }
+        public BidAsk Inverse()
+        {
+            return new BidAsk(1.0m / Ask, 1.0m / Bid);
+        }
+
+        public static BidAsk operator +(BidAsk a, BidAsk b)
+        {
+            return new BidAsk(a.Bid + b.Bid, a.Ask + b.Ask);
+        }
+
+        public static BidAsk operator +(BidAsk a)
+        {
+            return new BidAsk(a.Bid, a.Ask);
+        }
+
+        public static BidAsk operator -(BidAsk a)
+        {
+            return new BidAsk(-a.Bid, -a.Ask);
+        }
+
+        public static BidAsk operator *(BidAsk a, BidAsk b)
+        {
+            return new BidAsk(a.Bid * b.Bid, a.Ask * b.Ask);
+        }
+
+        public static BidAsk operator /(BidAsk a, BidAsk b)
+        {
+            // This one is tricky.
+            // BTC_EUR = (6000, 6100)
+            // Implicit rule give
+            // EUR_BTC = 1 / BTC_EUR
+            // Or
+            // EUR_BTC = (1, 1) / BTC_EUR
+            // Naive calculation would give us ( 1/6000, 1/6100) = (0.000166, 0.000163)
+            // However, this is an invalid BidAsk!!! because 0.000166 > 0.000163
+            // So instead, we need to calculate (1/6100, 1/6000)
+            return new BidAsk(a.Bid / b.Ask, a.Ask / b.Bid);
+        }
+
+        public static BidAsk operator -(BidAsk a, BidAsk b)
+        {
+            return new BidAsk(a.Bid - b.Bid, a.Ask - b.Ask);
+        }
+
+
+        public override bool Equals(object obj)
+        {
+            BidAsk item = obj as BidAsk;
+            if (item == null)
+                return false;
+            return Bid == item.Bid && Ask == item.Ask;
+        }
+        public static bool operator ==(BidAsk a, BidAsk b)
+        {
+            if (System.Object.ReferenceEquals(a, b))
+                return true;
+            if (((object)a == null) || ((object)b == null))
+                return false;
+            return a.Bid == b.Bid && a.Ask == b.Ask;
+        }
+
+        public static bool operator !=(BidAsk a, BidAsk b)
+        {
+            return !(a == b);
+        }
+
+        public override int GetHashCode()
+        {
+            return ToString().GetHashCode(StringComparison.InvariantCulture);
+        }
+
+        public override string ToString()
+        {
+            if (Bid == Ask)
+                return Bid.ToString(CultureInfo.InvariantCulture);
+            return $"({Bid.ToString(CultureInfo.InvariantCulture)} , {Ask.ToString(CultureInfo.InvariantCulture)})";
+        }
+    }
     public class ExchangeRate
     {
         public string Exchange { get; set; }
         public CurrencyPair CurrencyPair { get; set; }
-        public decimal? Value { get; set; }
+        public BidAsk BidAsk { get; set; }
 
         public override string ToString()
         {
-            if (Value == null)
+            if (BidAsk == null)
                 return $"{Exchange}({CurrencyPair})";
-            return $"{Exchange}({CurrencyPair}) == {Value.Value.ToString(CultureInfo.InvariantCulture)}";
+            return $"{Exchange}({CurrencyPair}) == {BidAsk.ToString()}";
         }
     }
 }

BTCPayServer/Rating/RateRules.cs

@@ -18,6 +18,7 @@ namespace BTCPayServer.Rating
         UnsupportedOperator,
         MissingArgument,
         DivideByZero,
+        InvalidNegative,
         PreprocessError,
         RateUnavailable,
         InvalidExchangeName,
@@ -139,7 +140,7 @@ namespace BTCPayServer.Rating
             }
             return new RateRule(this, currencyPair, candidate);
         }
-        
+
         public ExpressionSyntax FindBestCandidate(CurrencyPair p)
         {
             var invP = p.Inverse();
@@ -147,9 +148,9 @@ namespace BTCPayServer.Rating
             foreach (var pair in new[]
             {
                 (Pair: p, Priority: 0, Inverse: false),
-                (Pair: new CurrencyPair(p.Left, "X"), Priority: 1, Inverse: false),
-                (Pair: new CurrencyPair("X", p.Right), Priority: 1, Inverse: false),
-                (Pair: invP, Priority: 2, Inverse: true),
+                (Pair: invP, Priority: 1, Inverse: true),
+                (Pair: new CurrencyPair(p.Left, "X"), Priority: 2, Inverse: false),
+                (Pair: new CurrencyPair("X", p.Right), Priority: 2, Inverse: false),
                 (Pair: new CurrencyPair(invP.Left, "X"), Priority: 3, Inverse: true),
                 (Pair: new CurrencyPair("X", invP.Right), Priority: 3, Inverse: true),
                 (Pair: new CurrencyPair("X", "X"), Priority: 4, Inverse: false)
@@ -216,8 +217,7 @@ namespace BTCPayServer.Rating
                     }
                     else
                     {
-                        var token = SyntaxFactory.ParseToken(rate.Value.ToString(CultureInfo.InvariantCulture));
-                        return SyntaxFactory.LiteralExpression(SyntaxKind.NumericLiteralExpression, token);
+                        return RateRules.CreateExpression(rate.ToString());
                     }
                 }
             }
@@ -225,7 +225,7 @@ namespace BTCPayServer.Rating
 
         class CalculateWalker : CSharpSyntaxWalker
         {
-            public Stack<decimal> Values = new Stack<decimal>();
+            public Stack<BidAsk> Values = new Stack<BidAsk>();
             public List<RateRulesErrors> Errors = new List<RateRulesErrors>();
 
             public override void VisitPrefixUnaryExpression(PrefixUnaryExpressionSyntax node)
@@ -254,7 +254,15 @@ namespace BTCPayServer.Rating
                 switch (node.Kind())
                 {
                     case SyntaxKind.UnaryMinusExpression:
-                        Values.Push(-Values.Pop());
+                        var v = Values.Pop();
+                        if(v.Bid == v.Ask)
+                        {
+                            Values.Push(-v);
+                        }
+                        else
+                        {
+                            Errors.Add(RateRulesErrors.InvalidNegative);
+                        }
                         break;
                     case SyntaxKind.UnaryPlusExpression:
                         Values.Push(+Values.Pop());
@@ -299,7 +307,7 @@ namespace BTCPayServer.Rating
                         Values.Push(a * b);
                         break;
                     case SyntaxKind.DivideExpression:
-                        if (b == decimal.Zero)
+                        if (a.Ask == decimal.Zero || b.Ask == decimal.Zero)
                         {
                             Errors.Add(RateRulesErrors.DivideByZero);
                         }
@@ -309,19 +317,48 @@ namespace BTCPayServer.Rating
                         }
                         break;
                     case SyntaxKind.SubtractExpression:
-                        Values.Push(a - b);
+                        if (b.Bid == b.Ask)
+                        {
+                            Values.Push(a - b);
+                        }
+                        else
+                        {
+                            Errors.Add(RateRulesErrors.InvalidNegative);
+                        }
                         break;
                     default:
                         throw new NotSupportedException("Should never happen");
                 }
             }
 
+            Stack<decimal> _TupleValues = null;
+            public override void VisitTupleExpression(TupleExpressionSyntax node)
+            {
+                _TupleValues = new Stack<decimal>();
+                base.VisitTupleExpression(node);
+                if(_TupleValues.Count != 2)
+                {
+                    Errors.Add(RateRulesErrors.MissingArgument);
+                }
+                else
+                {
+                    var ask = _TupleValues.Pop();
+                    var bid = _TupleValues.Pop();
+                    Values.Push(new BidAsk(bid, ask));
+                }
+                _TupleValues = null;
+            }
+
             public override void VisitLiteralExpression(LiteralExpressionSyntax node)
             {
                 switch (node.Kind())
                 {
                     case SyntaxKind.NumericLiteralExpression:
-                        Values.Push(decimal.Parse(node.ToString(), CultureInfo.InvariantCulture));
+                        var v = decimal.Parse(node.ToString(), CultureInfo.InvariantCulture);
+                        if (_TupleValues == null)
+                            Values.Push(new BidAsk(v));
+                        else
+                            _TupleValues.Push(v);
                         break;
                 }
             }
@@ -487,7 +524,7 @@ namespace BTCPayServer.Rating
                 Errors.AddRange(calculate.Errors);
                 return false;
             }
-            _Value = calculate.Values.Pop();
+            _Value = calculate.Values.Pop().Bid;
             _EvaluatedNode = result;
             return true;
         }

BTCPayServer/Security/BitpayAuthentication.cs

@@ -0,0 +1,247 @@
+using System;
+using Microsoft.Extensions.Logging;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Routing;
+using Microsoft.AspNetCore.Http.Extensions;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Claims;
+using System.Text;
+using System.Threading.Tasks;
+using BTCPayServer.Authentication;
+using BTCPayServer.Models;
+using BTCPayServer.Services;
+using BTCPayServer.Services.Stores;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc.Filters;
+using Microsoft.AspNetCore.Mvc.Infrastructure;
+using Microsoft.Extensions.Options;
+using NBitcoin;
+using NBitcoin.DataEncoders;
+using NBitpayClient;
+using NBitpayClient.Extensions;
+using Newtonsoft.Json.Linq;
+using BTCPayServer.Logging;
+using Microsoft.AspNetCore.Http.Internal;
+using Microsoft.AspNetCore.Authentication;
+using System.Text.Encodings.Web;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace BTCPayServer.Security
+{
+    public class BitpayAuthentication
+    {
+        public class BitpayAuthOptions : AuthenticationSchemeOptions
+        {
+
+        }
+        class BitpayAuthHandler : AuthenticationHandler<BitpayAuthOptions>
+        {
+            StoreRepository _StoreRepository;
+            TokenRepository _TokenRepository;
+            public BitpayAuthHandler(
+                TokenRepository tokenRepository,
+                StoreRepository storeRepository,
+                IOptionsMonitor<BitpayAuthOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock) : base(options, logger, encoder, clock)
+            {
+                _TokenRepository = tokenRepository;
+                _StoreRepository = storeRepository;
+            }
+
+            protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
+            {
+                if (Context.Request.HttpContext.GetIsBitpayAPI())
+                {
+                    List<Claim> claims = new List<Claim>();
+                    var bitpayAuth = Context.Request.HttpContext.GetBitpayAuth();
+                    string storeId = null;
+                    // Careful, those are not the opposite. failedAuth says if a the tentative failed.
+                    // successAuth, ensure that at least one succeed.
+                    var failedAuth = false;
+                    var successAuth = false;
+                    if (!string.IsNullOrEmpty(bitpayAuth.Signature) && !string.IsNullOrEmpty(bitpayAuth.Id))
+                    {
+                        var result = await CheckBitId(Context.Request.HttpContext, bitpayAuth.Signature, bitpayAuth.Id, claims);
+                        storeId = result.StoreId;
+                        failedAuth = !result.SuccessAuth;
+                        successAuth = result.SuccessAuth;
+                    }
+                    else if (!string.IsNullOrEmpty(bitpayAuth.Authorization))
+                    {
+                        storeId = await CheckLegacyAPIKey(Context.Request.HttpContext, bitpayAuth.Authorization);
+                        if (storeId == null)
+                        {
+                            Logs.PayServer.LogDebug("API key check failed");
+                            failedAuth = true;
+                        }
+                        successAuth = storeId != null;
+                    }
+
+                    if (failedAuth)
+                    {
+                        return AuthenticateResult.Fail("Invalid credentials");
+                    }
+
+                    if (successAuth)
+                    {
+                        if (storeId != null)
+                        {
+                            claims.Add(new Claim(Policies.CanUseStore.Key, storeId));
+                            var store = await _StoreRepository.FindStore(storeId);
+                            Context.Request.HttpContext.SetStoreData(store);
+                        }
+                        return AuthenticateResult.Success(new AuthenticationTicket(new ClaimsPrincipal(new ClaimsIdentity(claims, Policies.BitpayAuthentication)), Policies.BitpayAuthentication));
+                    }
+                }
+                return AuthenticateResult.NoResult();
+            }
+
+            private async Task<(string StoreId, bool SuccessAuth)> CheckBitId(HttpContext httpContext, string sig, string id, List<Claim> claims)
+            {
+                httpContext.Request.EnableRewind();
+
+                string storeId = null;
+                string body = string.Empty;
+                if (httpContext.Request.ContentLength != 0 && httpContext.Request.Body != null)
+                {
+                    using (StreamReader reader = new StreamReader(httpContext.Request.Body, Encoding.UTF8, true, 1024, true))
+                    {
+                        body = reader.ReadToEnd();
+                    }
+                    httpContext.Request.Body.Position = 0;
+                }
+
+                var url = httpContext.Request.GetEncodedUrl();
+                try
+                {
+                    var key = new PubKey(id);
+                    if (BitIdExtensions.CheckBitIDSignature(key, sig, url, body))
+                    {
+                        var sin = key.GetBitIDSIN();
+                        claims.Add(new Claim(Claims.SIN, sin));
+
+                        string token = null;
+                        if (httpContext.Request.Query.TryGetValue("token", out var tokenValues))
+                        {
+                            token = tokenValues[0];
+                        }
+
+                        if (token == null && !String.IsNullOrEmpty(body) && httpContext.Request.Method == "POST")
+                        {
+                            try
+                            {
+                                token = JObject.Parse(body)?.Property("token")?.Value?.Value<string>();
+                            }
+                            catch { }
+                        }
+
+                        if (token != null)
+                        {
+                            var bitToken = await GetTokenPermissionAsync(sin, token);
+                            if (bitToken == null)
+                            {
+                                return (null, false);
+                            }
+                            storeId = bitToken.StoreId;
+                        }
+                    }
+                }
+                catch (FormatException) { }
+                return (storeId, true);
+            }
+
+            private async Task<string> CheckLegacyAPIKey(HttpContext httpContext, string auth)
+            {
+                var splitted = auth.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+                if (splitted.Length != 2 || !splitted[0].Equals("Basic", StringComparison.OrdinalIgnoreCase))
+                {
+                    return null;
+                }
+
+                string apiKey = null;
+                try
+                {
+                    apiKey = Encoders.ASCII.EncodeData(Encoders.Base64.DecodeData(splitted[1]));
+                }
+                catch
+                {
+                    return null;
+                }
+                return await _TokenRepository.GetStoreIdFromAPIKey(apiKey);
+            }
+
+            private async Task<BitTokenEntity> GetTokenPermissionAsync(string sin, string expectedToken)
+            {
+                var actualTokens = (await _TokenRepository.GetTokens(sin)).ToArray();
+                actualTokens = actualTokens.SelectMany(t => GetCompatibleTokens(t)).ToArray();
+
+                var actualToken = actualTokens.FirstOrDefault(a => a.Value.Equals(expectedToken, StringComparison.Ordinal));
+                if (expectedToken == null || actualToken == null)
+                {
+                    Logs.PayServer.LogDebug($"No token found for facade {Facade.Merchant} for SIN {sin}");
+                    return null;
+                }
+                return actualToken;
+            }
+
+            private IEnumerable<BitTokenEntity> GetCompatibleTokens(BitTokenEntity token)
+            {
+                if (token.Facade == Facade.Merchant.ToString())
+                {
+                    yield return token.Clone(Facade.User);
+                    yield return token.Clone(Facade.PointOfSale);
+                }
+                if (token.Facade == Facade.PointOfSale.ToString())
+                {
+                    yield return token.Clone(Facade.User);
+                }
+                yield return token;
+            }
+
+            private bool IsBitpayAPI(HttpContext httpContext, bool bitpayAuth)
+            {
+                if (!httpContext.Request.Path.HasValue)
+                    return false;
+
+                var isJson = (httpContext.Request.ContentType ?? string.Empty).StartsWith("application/json", StringComparison.OrdinalIgnoreCase);
+                var path = httpContext.Request.Path.Value;
+                if (
+                    bitpayAuth &&
+                    path == "/invoices" &&
+                  httpContext.Request.Method == "POST" &&
+                  isJson)
+                    return true;
+
+                if (
+                    bitpayAuth &&
+                    path == "/invoices" &&
+                  httpContext.Request.Method == "GET")
+                    return true;
+
+                if (
+                    path.StartsWith("/invoices/", StringComparison.OrdinalIgnoreCase) &&
+                    httpContext.Request.Method == "GET" &&
+                    (isJson || httpContext.Request.Query.ContainsKey("token")))
+                    return true;
+
+                if (path.Equals("/rates", StringComparison.OrdinalIgnoreCase) &&
+                    httpContext.Request.Method == "GET")
+                    return true;
+
+                if (
+                    path.Equals("/tokens", StringComparison.Ordinal) &&
+                    (httpContext.Request.Method == "GET" || httpContext.Request.Method == "POST"))
+                    return true;
+
+                return false;
+            }
+        }
+        internal static void AddAuthentication(IServiceCollection services, Action<BitpayAuthOptions> bitpayAuth = null)
+        {
+            bitpayAuth = bitpayAuth ?? new Action<BitpayAuthOptions>((o) => { });
+            services.AddAuthentication().AddScheme<BitpayAuthOptions, BitpayAuthHandler>(Policies.BitpayAuthentication, bitpayAuth);
+        }
+    }
+}

BTCPayServer/Security/BitpayClaimsFilter.cs

@@ -1,196 +0,0 @@
-using System;
-using Microsoft.Extensions.Logging;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Mvc.Routing;
-using Microsoft.AspNetCore.Http.Extensions;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Security.Claims;
-using System.Text;
-using System.Threading.Tasks;
-using BTCPayServer.Authentication;
-using BTCPayServer.Models;
-using BTCPayServer.Services;
-using BTCPayServer.Services.Stores;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Identity;
-using Microsoft.AspNetCore.Mvc.Filters;
-using Microsoft.AspNetCore.Mvc.Infrastructure;
-using Microsoft.Extensions.Options;
-using NBitcoin;
-using NBitcoin.DataEncoders;
-using NBitpayClient;
-using NBitpayClient.Extensions;
-using Newtonsoft.Json.Linq;
-using BTCPayServer.Logging;
-using Microsoft.AspNetCore.Http.Internal;
-
-namespace BTCPayServer.Security
-{
-    public class BitpayClaimsFilter : IAsyncAuthorizationFilter, IConfigureOptions<MvcOptions>
-    {
-        UserManager<ApplicationUser> _UserManager;
-        StoreRepository _StoreRepository;
-        TokenRepository _TokenRepository;
-
-        public BitpayClaimsFilter(
-            UserManager<ApplicationUser> userManager,
-            TokenRepository tokenRepository,
-            StoreRepository storeRepository)
-        {
-            _UserManager = userManager;
-            _StoreRepository = storeRepository;
-            _TokenRepository = tokenRepository;
-        }
-
-        void IConfigureOptions<MvcOptions>.Configure(MvcOptions options)
-        {
-            options.Filters.Add(typeof(BitpayClaimsFilter));
-        }
-
-        public async Task OnAuthorizationAsync(AuthorizationFilterContext context)
-        {
-            var principal = context.HttpContext.User;
-            if (context.HttpContext.GetIsBitpayAPI())
-            {
-                var bitpayAuth = context.HttpContext.GetBitpayAuth();
-                string storeId = null;
-                var failedAuth = false;
-                if (!string.IsNullOrEmpty(bitpayAuth.Signature) && !string.IsNullOrEmpty(bitpayAuth.Id))
-                {
-                    storeId = await CheckBitId(context.HttpContext, bitpayAuth.Signature, bitpayAuth.Id);
-                    if (!context.HttpContext.User.Claims.Any(c => c.Type == Claims.SIN))
-                    {
-                        Logs.PayServer.LogDebug("BitId signature check failed");
-                        failedAuth = true;
-                    }
-                }
-                else if (!string.IsNullOrEmpty(bitpayAuth.Authorization))
-                {
-                    storeId = await CheckLegacyAPIKey(context.HttpContext, bitpayAuth.Authorization);
-                    if (storeId == null)
-                    {
-                        Logs.PayServer.LogDebug("API key check failed");
-                        failedAuth = true;
-                    }
-                }
-
-                if (storeId != null)
-                {
-                    var identity = ((ClaimsIdentity)context.HttpContext.User.Identity);
-                    identity.AddClaim(new Claim(Policies.CanUseStore.Key, storeId));
-                    var store = await _StoreRepository.FindStore(storeId);
-                    context.HttpContext.SetStoreData(store);
-                }
-                else if (failedAuth)
-                {
-                    throw new BitpayHttpException(401, "Invalid credentials");
-                }
-            }
-        }
-
-        private async Task<string> CheckBitId(HttpContext httpContext, string sig, string id)
-        {
-            httpContext.Request.EnableRewind();
-
-            string storeId = null;
-            string body = string.Empty;
-            if (httpContext.Request.ContentLength != 0 && httpContext.Request.Body != null)
-            {
-                using (StreamReader reader = new StreamReader(httpContext.Request.Body, Encoding.UTF8, true, 1024, true))
-                {
-                    body = reader.ReadToEnd();
-                }
-                httpContext.Request.Body.Position = 0;
-            }
-
-            var url = httpContext.Request.GetEncodedUrl();
-            try
-            {
-                var key = new PubKey(id);
-                if (BitIdExtensions.CheckBitIDSignature(key, sig, url, body))
-                {
-                    var sin = key.GetBitIDSIN();
-                    var identity = ((ClaimsIdentity)httpContext.User.Identity);
-                    identity.AddClaim(new Claim(Claims.SIN, sin));
-
-                    string token = null;
-                    if (httpContext.Request.Query.TryGetValue("token", out var tokenValues))
-                    {
-                        token = tokenValues[0];
-                    }
-
-                    if (token == null && !String.IsNullOrEmpty(body) && httpContext.Request.Method == "POST")
-                    {
-                        try
-                        {
-                            token = JObject.Parse(body)?.Property("token")?.Value?.Value<string>();
-                        }
-                        catch { }
-                    }
-
-                    if (token != null)
-                    {
-                        var bitToken = await GetTokenPermissionAsync(sin, token);
-                        if (bitToken == null)
-                        {
-                            return null;
-                        }
-                        storeId = bitToken.StoreId;
-                    }
-                }
-            }
-            catch (FormatException) { }
-            return storeId;
-        }
-
-        private async Task<string> CheckLegacyAPIKey(HttpContext httpContext, string auth)
-        {
-            var splitted = auth.Split(' ', StringSplitOptions.RemoveEmptyEntries);
-            if (splitted.Length != 2 || !splitted[0].Equals("Basic", StringComparison.OrdinalIgnoreCase))
-            {
-                return null;
-            }
-
-            string apiKey = null;
-            try
-            {
-                apiKey = Encoders.ASCII.EncodeData(Encoders.Base64.DecodeData(splitted[1]));
-            }
-            catch
-            {
-                return null;
-            }
-            return await _TokenRepository.GetStoreIdFromAPIKey(apiKey);
-        }
-
-        private async Task<BitTokenEntity> GetTokenPermissionAsync(string sin, string expectedToken)
-        {
-            var actualTokens = (await _TokenRepository.GetTokens(sin)).ToArray();
-            actualTokens = actualTokens.SelectMany(t => GetCompatibleTokens(t)).ToArray();
-
-            var actualToken = actualTokens.FirstOrDefault(a => a.Value.Equals(expectedToken, StringComparison.Ordinal));
-            if (expectedToken == null || actualToken == null)
-            {
-                Logs.PayServer.LogDebug($"No token found for facade {Facade.Merchant} for SIN {sin}");
-                return null;
-            }
-            return actualToken;
-        }
-
-        private IEnumerable<BitTokenEntity> GetCompatibleTokens(BitTokenEntity token)
-        {
-            if (token.Facade == Facade.Merchant.ToString())
-            {
-                yield return token.Clone(Facade.User);
-                yield return token.Clone(Facade.PointOfSale);
-            }
-            if (token.Facade == Facade.PointOfSale.ToString())
-            {
-                yield return token.Clone(Facade.User);
-            }
-            yield return token;
-        }
-    }
-}

BTCPayServer/Security/Policies.cs

@@ -8,6 +8,7 @@ namespace BTCPayServer.Security
 {
     public static class Policies
     {
+        public const string BitpayAuthentication = "Bitpay.Auth";
         public const string CookieAuthentication = "Identity.Application";
         public static AuthorizationOptions AddBTCPayPolicies(this AuthorizationOptions options)
         {

BTCPayServer/Services/Invoices/InvoiceEntity.cs

@@ -13,6 +13,7 @@ using NBXplorer;
 using NBXplorer.DerivationStrategy;
 using BTCPayServer.Payments;
 using NBitpayClient;
+using BTCPayServer.Payments.Bitcoin;
 
 namespace BTCPayServer.Services.Invoices
 {
@@ -348,6 +349,7 @@ namespace BTCPayServer.Services.Invoices
 
             dto.Url = ServerUrl.WithTrailingSlash() + $"invoice?id=" + Id;
             dto.CryptoInfo = new List<NBitpayClient.InvoiceCryptoInfo>();
+            dto.MinerFees = new Dictionary<string, MinerFeeInfo>();
             foreach (var info in this.GetPaymentMethods(networkProvider))
             {
                 var accounting = info.Calculate();
@@ -381,6 +383,10 @@ namespace BTCPayServer.Services.Invoices
 
                 if (paymentId.PaymentType == PaymentTypes.BTCLike)
                 {
+                    var minerInfo = new MinerFeeInfo();
+                    minerInfo.TotalFee = accounting.NetworkFee.Satoshi;
+                    minerInfo.SatoshiPerBytes = ((BitcoinLikeOnChainPaymentMethod)info.GetPaymentMethodDetails()).FeeRate.GetFee(1).Satoshi;
+                    dto.MinerFees.TryAdd(paymentId.CryptoCode, minerInfo);
                     var cryptoSuffix = cryptoInfo.CryptoCode == "BTC" ? "" : "/" + cryptoInfo.CryptoCode;
                     cryptoInfo.PaymentUrls = new NBitpayClient.InvoicePaymentUrls()
                     {

BTCPayServer/Services/Rates/BitpayRateProvider.cs

@@ -24,7 +24,7 @@ namespace BTCPayServer.Services.Rates
         {
             return new ExchangeRates((await _Bitpay.GetRatesAsync().ConfigureAwait(false))
                 .AllRates
-                .Select(r => new ExchangeRate() { Exchange = BitpayName, CurrencyPair = new CurrencyPair("BTC", r.Code), Value = r.Value })
+                .Select(r => new ExchangeRate() { Exchange = BitpayName, CurrencyPair = new CurrencyPair("BTC", r.Code), BidAsk = new BidAsk(r.Value) })
                 .ToList());
         }
     }

BTCPayServer/Services/Rates/CoinAverageRateProvider.cs

@@ -54,7 +54,7 @@ namespace BTCPayServer.Services.Rates
         public const string CoinAverageName = "coinaverage";
         public CoinAverageRateProvider()
         {
-            
+
         }
         static HttpClient _Client = new HttpClient();
 
@@ -69,10 +69,31 @@ namespace BTCPayServer.Services.Rates
 
         public ICoinAverageAuthenticator Authenticator { get; set; }
 
-        private bool TryToDecimal(JProperty p, out decimal v)
+        private bool TryToBidAsk(JProperty p, out BidAsk bidAsk)
         {
-            JToken token = p.Value[Exchange == CoinAverageName ? "last" : "bid"];
-            return decimal.TryParse(token.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out v);
+            bidAsk = null;
+            if (Exchange == CoinAverageName)
+            {
+                JToken last = p.Value["last"];
+                if (!decimal.TryParse(last.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v) ||
+                    v <= 0)
+                    return false;
+                bidAsk = new BidAsk(v);
+                return true;
+            }
+            else
+            {
+                JToken bid = p.Value["bid"];
+                JToken ask = p.Value["ask"];
+                if (bid == null || ask == null ||
+                    !decimal.TryParse(bid.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v1) ||
+                    !decimal.TryParse(ask.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v2) ||
+                    v1 > v2 ||
+                    v1 <= 0 || v2 <= 0)
+                    return false;
+                bidAsk = new BidAsk(v1, v2);
+                return true;
+            }
         }
 
         public async Task<ExchangeRates> GetRatesAsync()
@@ -108,10 +129,10 @@ namespace BTCPayServer.Services.Rates
                 {
                     ExchangeRate exchangeRate = new ExchangeRate();
                     exchangeRate.Exchange = Exchange;
-                    if (!TryToDecimal(prop, out decimal value))
+                    if (!TryToBidAsk(prop, out var value))
                         continue;
-                    exchangeRate.Value = value;
-                    if(CurrencyPair.TryParse(prop.Name, out var pair))
+                    exchangeRate.BidAsk = value;
+                    if (CurrencyPair.TryParse(prop.Name, out var pair))
                     {
                         exchangeRate.CurrencyPair = pair;
                         exchangeRates.Add(exchangeRate);

BTCPayServer/Services/Rates/ExchangeSharpRateProvider.cs

@@ -61,7 +61,7 @@ namespace BTCPayServer.Services.Rates
                 var rate = new ExchangeRate();
                 rate.CurrencyPair = pair;
                 rate.Exchange = _ExchangeName;
-                rate.Value = ticker.Value.Bid;
+                rate.BidAsk = new BidAsk(ticker.Value.Bid, ticker.Value.Ask);
                 return rate;
             }
             catch (ArgumentException)

BTCPayServer/Services/Rates/QuadrigacxRateProvider.cs

@@ -14,13 +14,19 @@ namespace BTCPayServer.Services.Rates
         public const string QuadrigacxName = "quadrigacx";
         static HttpClient _Client = new HttpClient();
 
-        private bool TryToDecimal(JObject p, out decimal v)
+        private bool TryToBidAsk(JObject p, out BidAsk v)
         {
-            v = 0.0m;
-            JToken token = p.Property("bid")?.Value;
-            if (token == null)
+            v = null;
+            JToken bid = p.Property("bid")?.Value;
+            JToken ask = p.Property("ask")?.Value;
+            if (bid == null || ask == null)
                 return false;
-            return decimal.TryParse(token.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out v);
+            if (!decimal.TryParse(bid.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v1) ||
+               !decimal.TryParse(bid.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v2) ||
+               v1 <= 0m || v2 <= 0m || v1 > v2)
+                return false;
+            v = new BidAsk(v1, v2);
+            return true;
         }
 
         public async Task<ExchangeRates> GetRatesAsync()
@@ -37,9 +43,9 @@ namespace BTCPayServer.Services.Rates
                     continue;
                 rate.CurrencyPair = pair;
                 rate.Exchange = QuadrigacxName;
-                if (!TryToDecimal((JObject)prop.Value, out var v))
+                if (!TryToBidAsk((JObject)prop.Value, out var v))
                     continue;
-                rate.Value = v;
+                rate.BidAsk = v;
                 exchangeRates.Add(rate);
             }
             return exchangeRates;

BTCPayServer/Views/Apps/UpdatePointOfSale.cshtml

@@ -38,6 +38,31 @@
                         <textarea asp-for="Template" rows="20" cols="40" class="form-control"></textarea>
                         <span asp-validation-for="Template" class="text-danger"></span>
                     </div>
+                    <div class="form-group">
+                        <h5>Host button externally</h5>
+                        <p>You can host point of sale buttons in an external website with the following code.</p>
+                        @if(Model.Example1 != null)
+                        {
+                            <span>For anything with a custom amount</span>
+                            <pre><code class="html">@Model.Example1</code></pre>
+                        }
+                        @if(Model.Example2 != null)
+                        {
+                            <span>For a specific item of your template</span>
+                            <pre><code class="html">@Model.Example2</code></pre>
+                        }
+                        <p>A <code>POST</code> callback will be sent to notification with the following form will be sent to <code>notificationUrl</code> once the enough is paid and once again once there is enough confirmations to the payment:</p>
+                        <pre><code class="json">@Model.ExampleCallback</code></pre>
+                        <p><strong>Never</strong> trust anything but <code>id</code>, <strong>ignore</strong> the other fields completely, an attacker can spoof those, they are present only for backward compatibility reason:</p>
+                        <p>
+                            <ul>
+                                <li><strong>Build the invoice's url by yourself</strong> do not trust the <code>url</code> field, this can be spoofed to use attacker's server.</li>
+                                <li>Send a <code>GET</code> request to the invoice's url with <code>Content-Type: application/json</code></li>
+                                <li>Verify that the <code>orderId</code> is from your backend, that the <code>price</code> is correct and that <code>status</code> is either <code>confirmed</code> or <code>complete</code></li>
+                                <li>You can then ship your order</li>
+                            </ul>
+                        </p>
+                    </div>
                     <div class="form-group">
                         <input type="submit" class="btn btn-primary" />
                     </div>
@@ -47,3 +72,10 @@
         </div>
     </div>
 </section>
+
+@section Scripts {
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css">
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+    <script>hljs.initHighlightingOnLoad();</script>
+}
+

BTCPayServer/Views/Invoice/Checkout-Body.cshtml

@@ -33,7 +33,7 @@
     </div>
 </div>
 <div class="order-details">
-    @if (Model.AvailableCryptos.Count > 1)
+    @if (Model.AvailableCryptos.Count > 0)
     {
         <div class="currency-selection">
             <div class="single-item-order__left">

BTCPayServer/Views/Invoice/Invoice.cshtml

@@ -53,15 +53,15 @@
                     </tr>
                     <tr>
                         <th>Created date</th>
-                        <td>@Model.CreatedDate</td>
+                        <td>@Model.CreatedDate.ToBrowserDate()</td>
                     </tr>
                     <tr>
                         <th>Expiration date</th>
-                        <td>@Model.ExpirationDate</td>
+                        <td>@Model.ExpirationDate.ToBrowserDate()</td>
                     </tr>
                     <tr>
                         <th>Monitoring date</th>
-                        <td>@Model.MonitoringDate</td>
+                        <td>@Model.MonitoringDate.ToBrowserDate()</td>
                     </tr>
                     <tr>
                         <th>Transaction speed</th>
@@ -289,7 +289,7 @@
                         @foreach(var evt in Model.Events)
                         {
                             <tr>
-                                <td>@evt.Timestamp</td>
+                                <td>@evt.Timestamp.ToBrowserDate()</td>
                                 <td>@evt.Message</td>
                             </tr>
                         }

BTCPayServer/Views/Invoice/ListInvoices.cshtml

@@ -66,7 +66,7 @@
                     @foreach(var invoice in Model.Invoices)
                     {
                         <tr>
-                            <td>@invoice.Date</td>
+                            <td>@invoice.Date.ToTimeAgo()</td>
                             <td>
                                 @if(invoice.RedirectUrl != string.Empty)
                                 {

BTCPayServer/Views/Server/Rates.cshtml

@@ -40,7 +40,7 @@
                 <table class="table table-sm">
                     <tr>
                         <th>Quota period</th>
-                        <td>@Model.RateLimits.TotalPeriod.Prettify()</td>
+                        <td>@Model.RateLimits.TotalPeriod.TimeString()</td>
                     </tr>
                     <tr>
                         <th>Requests quota</th>
@@ -48,7 +48,7 @@
                     </tr>
                     <tr>
                         <th>Quota reset in</th>
-                        <td>@Model.RateLimits.CounterReset.Prettify()</td>
+                        <td>@Model.RateLimits.CounterReset.TimeString()</td>
                     </tr>
                 </table>
             }

BTCPayServer/Views/Stores/AddLightningNode.cshtml

@@ -16,7 +16,7 @@
 <div class="alert alert-warning alert-dismissible" role="alert">
     <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
     <p>
-        <span>A connection to a lightning charge node or clightning unix socket is required to generate lignting network enabled invoices. <br /></span>
+        <span>A connection to a lightning charge node or clightning unix socket is required to generate lightning network enabled invoices. <br /></span>
         <span>This is experimental and not advised for production so keep in mind:</span>
     </p>
     <ul>

BTCPayServer/Views/Stores/UpdateStore.cshtml

@@ -96,7 +96,7 @@
                 <div class="form-group">
                     <h5>Lightning nodes (Experimental)</h5>
                     <p>
-                        <span>A connection to a lightning charge node is required to generate lignting network enabled invoices.<br /></span>
+                        <span>A connection to a lightning charge node is required to generate lightning network enabled invoices.<br /></span>
                         <span>This is experimental and not advised for production.</span>
                     </p>
                 </div>

BTCPayServer/Views/ViewsRazor.cs

@@ -1,7 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using System.Threading.Tasks;
+using Microsoft.AspNetCore.Html;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
 
 namespace BTCPayServer.Views
@@ -22,5 +24,39 @@ namespace BTCPayServer.Views
             var activePage = (T)viewData[ACTIVE_PAGE_KEY];
             return page.Equals(activePage) ? "active" : null;
         }
+
+        public static HtmlString ToBrowserDate(this DateTimeOffset date)
+        {
+            var hello = date.ToString("o", CultureInfo.InvariantCulture);
+            return new HtmlString($"<span class='localizeDate'>{hello}</span>");
+        }
+
+        public static string ToTimeAgo(this DateTimeOffset date)
+        {
+            var formatted = (DateTimeOffset.UtcNow - date).TimeString() + " ago";
+            return formatted;
+        }
+
+        public static string TimeString(this TimeSpan timeSpan)
+        {
+            if (timeSpan.TotalMinutes < 1)
+            {
+                return $"{(int)timeSpan.TotalSeconds} second{Plural((int)timeSpan.TotalSeconds)}";
+            }
+            if (timeSpan.TotalHours < 1)
+            {
+                return $"{(int)timeSpan.TotalMinutes} minute{Plural((int)timeSpan.TotalMinutes)}";
+            }
+            if (timeSpan.Days < 1)
+            {
+                return $"{(int)timeSpan.TotalHours} hour{Plural((int)timeSpan.TotalHours)}";
+            }
+            return $"{(int)timeSpan.TotalDays} day{Plural((int)timeSpan.TotalDays)}";
+        }
+
+        private static string Plural(int totalDays)
+        {
+            return totalDays > 1 ? "s" : string.Empty;
+        }
     }
 }

BTCPayServer/bundleconfig.json

@@ -18,7 +18,8 @@
             "wwwroot/vendor/jquery-easing/jquery.easing.js",
             "wwwroot/vendor/scrollreveal/scrollreveal.min.js",
             "wwwroot/vendor/magnific-popup/jquery.magnific-popup.js",
-            "wwwroot/vendor/bootstrap4-creativestart/*.js"
+            "wwwroot/vendor/bootstrap4-creativestart/*.js",
+            "wwwroot/main/**/*.js"
         ]
     },
     {

BTCPayServer/wwwroot/checkout/js/langs/es.js

@@ -5,45 +5,45 @@ const locales_es = {
     "Awaiting Payment...": "En espera de pago...",
     "Pay with": "Pagar con",
     "Contact and Refund Email": "Contacto y correo electrónico de reembolso",
-    "Contact_Body": "Por favor provea una dirección de correo electrónico a continuación. Nos pondremos en contacto con usted en esta dirección si hay un problema con su pago.",
-    "Your email": "Su correo electrónico",
+    "Contact_Body": "Por favor indica una dirección de correo electrónico a continuación. Nos pondremos en contacto contigo en esta dirección si hay algún problema con tu pago.",
+    "Your email": "Tu correo electrónico",
     "Continue": "Continuar",
-    "Please enter a valid email address": "Por favor entre un correo electrónico válido",
+    "Please enter a valid email address": "Por favor ingresa un correo electrónico válido",
     "Order Amount": "Total del pedido",
     "Network Cost": "Costo de la red",
-    "Already Paid": "Ya pagado",
-    "Due": "Debido",
+    "Already Paid": "Ya has pagado",
+    "Due": "Aún debes",
     // Tabs
     "Scan": "Escanear",
     "Copy": "Copiar",
     "Conversion": "Conversión",
     // Scan tab
-    "Open in wallet": "Abrir en billetera",
+    "Open in wallet": "Abrir en la billetera",
     // Copy tab
-    "CompletePay_Body": "Para completar su pago, envíe {{btcDue}} {{cryptoCode}} a la siguiente dirección.",
+    "CompletePay_Body": "Para completar tu pago, envía {{btcDue}} {{cryptoCode}} a la siguiente dirección:",
     "Amount": "Cantidad",
     "Address": "Dirección",
     "Copied": "Copiado",
     // Conversion tab
-    "ConversionTab_BodyTop": "Puede pagar {{btcDue}} {{cryptoCode}} usando altcoins que no sean los que el comerciante soporta directamente.",
-    "ConversionTab_BodyDesc": "Este servicio es provisto por terceros. Tenga en cuenta que no tenemos control sobre cómo los proveedores enviarán sus fondos. La factura solo se marcará como abonada una vez que se reciban los fondos en la cadena de bloques de {{cryptoCode}} .",
+    "ConversionTab_BodyTop": "Puedes pagar {{btcDue}} {{cryptoCode}} usando Altcoins que este comercio no soporta directamente.",
+    "ConversionTab_BodyDesc": "Este servicio es provisto por terceros. Ten en cuenta que no tenemos control sobre cómo estos terceros envían los fondos. La factura solo se marcará como pagada una vez se reciban los fondos en la cadena de bloques de {{cryptoCode}} .",
     "Shapeshift_Button_Text": "Pagar con Altcoins",
     "ConversionTab_Lightning": "No hay proveedores de conversión disponibles para los pagos de Lightning Network.",
     // Invoice expired
     "Invoice expiring soon...": "La factura expira pronto...",
     "Invoice expired": "La factura expiró",
     "What happened?": "¿Qué sucedió?",
-    "InvoiceExpired_Body_1": "Esta factura ha expirado. Una factura solo es válida por {{maxTimeMinutes}} minutos. Puede volver a {{storeName}} si desea volver a enviar su pago.",
-    "InvoiceExpired_Body_2": "Si intentó enviar un pago, aún no ha sido aceptado por la red de Bitcoin. Todavía no hemos recibido sus fondos.",
-    "InvoiceExpired_Body_3": "Si la transacción no es aceptada por la red de Bitcoin, los fondos se podrán gastar nuevamente en su billetera. Dependiendo de su billetera, esto puede tomar 48-72 horas.",
-    "Invoice ID": "ID de factura",
-    "Order ID": "ID de pedido",
+    "InvoiceExpired_Body_1": "Esta factura ha expirado. Una factura solo es válida por {{maxTimeMinutes}} minutos. Puedes regresar a {{storeName}} si deseas volver a enviar tu pago.",
+    "InvoiceExpired_Body_2": "Si intentaste enviar un pago, aún no ha sido aceptado por la red de Bitcoin. Todavía no hemos recibido tus fondos.",
+    "InvoiceExpired_Body_3": "Si la transacción no es aceptada por la red de Bitcoin, los fondos se podrán gastar nuevamente en tu billetera. Dependiendo de tu billetera, esto puede tomar 48-72 horas.",
+    "Invoice ID": "ID de la factura",
+    "Order ID": "ID del pedido",
     "Return to StoreName": "Regresar a {{storeName}}",
     // Invoice paid
     "This invoice has been paid": "Esta factura ha sido pagada",
     // Invoice archived
     "This invoice has been archived": "Esta factura ha sido archivada",
-    "Archived_Body": "Por favor, comuníquese con la tienda para obtener información de su pedido o asistencia",
+    "Archived_Body": "Por favor, comunícate con la tienda para obtener información de tu pedido o asistencia",
     // Lightning
     "BOLT 11 Invoice": "Factura BOLT 11",
     "Node Info": "Información del nodo",

BTCPayServer/wwwroot/main/site.js

@@ -0,0 +1,9 @@
+$(function () {
+    $(".localizeDate").each(function (index) {
+        var serverDate = $(this).text();
+        var localDate = new Date(serverDate);
+
+        var dateString = localDate.toLocaleDateString() + " " + localDate.toLocaleTimeString();
+        $(this).text(dateString);
+    });
+});

Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/dotnet:2.1.300-rc1-sdk-alpine3.7 AS builder
+FROM microsoft/dotnet:2.1.300-sdk-alpine3.7 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/dotnet:2.1.0-rc1-aspnetcore-runtime-alpine3.7
+FROM microsoft/dotnet:2.1.0-aspnetcore-runtime-alpine3.7
 
 ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT false
 RUN apk add --no-cache icu-libs

Nuget.Config

@@ -5,4 +5,4 @@
 		<add key="aspnetcidev" value="https://dotnet.myget.org/F/aspnetcore-ci-dev/api/v3/index.json"/>
 		<add key="api.nuget.org" value="https://api.nuget.org/v3/index.json"/>
 	</packageSources>
-</configuration>
+</configuration>

README.md

@@ -20,6 +20,19 @@ This solution is for you if:
 * 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
 
+## We support altcoins!
+
+In addition to Bitcoin, we support the following crypto currencies:
+
+* BGold
+* Dogecoin
+* Feathercoin
+* Groestlcoin
+* Litecoin
+* Monacoin
+* Polis
+* UFO
+
 ## Documentation
 
 Please check out our [complete documentation](https://github.com/btcpayserver/btcpayserver-doc) for more details.
@@ -30,7 +43,7 @@ You can also checkout [The Merchants Guide to accepting Bitcoin directly with no
 
 While the documentation advise using docker-compose, you may want to build yourself outside of development purpose.
 
-First install .NET Core SDK 2.1 as specified by [Microsoft website](https://www.microsoft.com/net/download/dotnet-core/sdk-2.1.300-rc1).
+First install .NET Core SDK 2.1 as specified by [Microsoft website](https://www.microsoft.com/net/download/dotnet-core).
 
 On Powershell:
 ```