diff --git a/BTCPayServer/BTCPayNetworkProvider.Groestlcoin.cs b/BTCPayServer/BTCPayNetworkProvider.Groestlcoin.cs
index ec63bdfc1..cd4f793f2 100644
--- a/BTCPayServer/BTCPayNetworkProvider.Groestlcoin.cs
+++ b/BTCPayServer/BTCPayNetworkProvider.Groestlcoin.cs
@@ -10,25 +10,40 @@ namespace BTCPayServer
     {
         public void InitGroestlcoin()
         {
-
             var nbxplorerNetwork = NBXplorerNetworkProvider.GetFromCryptoCode("GRS");
             Add(new BTCPayNetwork()
             {
                 CryptoCode = nbxplorerNetwork.CryptoCode,
                 DisplayName = "Groestlcoin",
-                BlockExplorerLink = NetworkType == NetworkType.Mainnet ? "https://chainz.cryptoid.info/grs/tx.dws?{0}.htm" : "https://chainz.cryptoid.info/grs-test/tx.dws?{0}.htm",
+                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)"
+                    "GRS_X = GRS_BTC * BTC_X",
+                    "GRS_BTC = bittrex(GRS_BTC)"
                 },
                 CryptoImagePath = "imlegacy/groestlcoin.png",
                 LightningImagePath = "imlegacy/groestlcoin-lightning.svg",
                 DefaultSettings = BTCPayDefaultSettings.GetDefaultSettings(NetworkType),
-                CoinType = NetworkType == NetworkType.Mainnet ? new KeyPath("17'") : new KeyPath("1'")
+                CoinType = NetworkType == NetworkType.Mainnet ? new KeyPath("17'") : new KeyPath("1'"),
+                //https://github.com/Groestlcoin/electrum-grs/blob/6799baba60305164126a92b52e5e95284ed44543/electrum_grs/constants.py
+                ElectrumMapping = NetworkType == NetworkType.Mainnet
+                    ? new Dictionary<uint, string[]>()
+                    {
+                        {0x0488b21eU, new[] {"legacy"}},
+                        {0x049d7cb2U, new[] {"p2sh"}},
+                        {0x04b24746U, Array.Empty<string>()},
+                    }
+                    : new Dictionary<uint, string[]>()
+                    {
+                        {0x043587cfU, new[] {"legacy"}},
+                        {0x044a5262U, new[] {"p2sh"}},
+                        {0x045f1cf6U, Array.Empty<string>()}
+                    }
             });
         }
     }