coins: Add curve_name

coins.json

@@ -3,6 +3,7 @@
 	"coin_name": "Bitcoin",
 	"coin_shortcut": "BTC",
 	"coin_label": "Bitcoin",
+	"curve_name": "secp256k1",
 	"address_type": 0,
 	"address_type_p2sh": 5,
 	"maxfee_kb": 2000000,
@@ -38,6 +39,7 @@
 	"coin_name": "Testnet",
 	"coin_shortcut": "TEST",
 	"coin_label": "Testnet",
+	"curve_name": "secp256k1",
 	"address_type": 111,
 	"address_type_p2sh": 196,
 	"maxfee_kb": 10000000,
@@ -70,6 +72,7 @@
 	"coin_name": "Bcash",
 	"coin_shortcut": "BCH",
 	"coin_label": "Bitcoin Cash",
+	"curve_name": "secp256k1",
 	"address_type": 0,
 	"address_type_p2sh": 5,
 	"maxfee_kb": 500000,
@@ -104,6 +107,7 @@
 	"coin_name": "Bcash Testnet",
 	"coin_shortcut": "TBCH",
 	"coin_label": "Bitcoin Cash Testnet",
+	"curve_name": "secp256k1",
 	"address_type": 111,
 	"address_type_p2sh": 196,
 	"maxfee_kb": 10000000,
@@ -133,6 +137,7 @@
 	"coin_name": "Namecoin",
 	"coin_shortcut": "NMC",
 	"coin_label": "Namecoin",
+	"curve_name": "secp256k1",
 	"address_type": 52,
 	"address_type_p2sh": 5,
 	"maxfee_kb": 10000000,
@@ -162,6 +167,7 @@
 	"coin_name": "Litecoin",
 	"coin_shortcut": "LTC",
 	"coin_label": "Litecoin",
+	"curve_name": "secp256k1",
 	"address_type": 48,
 	"address_type_p2sh": 50,
 	"maxfee_kb": 40000000,
@@ -193,6 +199,7 @@
 	"coin_name": "Dogecoin",
 	"coin_shortcut": "DOGE",
 	"coin_label": "Dogecoin",
+	"curve_name": "secp256k1",
 	"address_type": 30,
 	"address_type_p2sh": 22,
 	"maxfee_kb": 1000000000,
@@ -222,6 +229,7 @@
 	"coin_name": "Dash",
 	"coin_shortcut": "DASH",
 	"coin_label": "Dash",
+	"curve_name": "secp256k1",
 	"address_type": 76,
 	"address_type_p2sh": 16,
 	"maxfee_kb": 100000,
@@ -254,6 +262,7 @@
 	"coin_name": "Zcash",
 	"coin_shortcut": "ZEC",
 	"coin_label": "Zcash",
+	"curve_name": "secp256k1",
 	"address_type": 7352,
 	"address_type_p2sh": 7357,
 	"maxfee_kb": 1000000,
@@ -285,6 +294,7 @@
 	"coin_name": "Zcash Testnet",
 	"coin_shortcut": "TAZ",
 	"coin_label": "Zcash Testnet",
+	"curve_name": "secp256k1",
 	"address_type": 7461,
 	"address_type_p2sh": 7354,
 	"maxfee_kb": 10000000,
@@ -314,6 +324,7 @@
 	"coin_name": "Bitcoin Gold",
 	"coin_shortcut": "BTG",
 	"coin_label": "Bitcoin Gold",
+	"curve_name": "secp256k1",
 	"address_type": 38,
 	"address_type_p2sh": 23,
 	"maxfee_kb": 500000,
@@ -348,6 +359,7 @@
 	"coin_name": "DigiByte",
 	"coin_shortcut": "DGB",
 	"coin_label": "DigiByte",
+	"curve_name": "secp256k1",
 	"address_type": 30,
 	"address_type_p2sh": 5,
 	"maxfee_kb": 500000,
@@ -380,6 +392,7 @@
 	"coin_name": "Monacoin",
 	"coin_shortcut": "MONA",
 	"coin_label": "Monacoin",
+	"curve_name": "secp256k1",
 	"address_type": 50,
 	"address_type_p2sh": 55,
 	"maxfee_kb": 5000000,
@@ -411,6 +424,7 @@
 	"coin_name": "Fujicoin",
 	"coin_shortcut": "FJC",
 	"coin_label": "Fujicoin",
+	"curve_name": "secp256k1",
 	"address_type": 36,
 	"address_type_p2sh": 16,
 	"maxfee_kb": 1000000,
@@ -442,6 +456,7 @@
 	"coin_name": "Vertcoin",
 	"coin_shortcut": "VTC",
 	"coin_label": "Vertcoin",
+	"curve_name": "secp256k1",
 	"address_type": 71,
 	"address_type_p2sh": 5,
 	"maxfee_kb": 40000000,