diff --git a/coins.json b/coins.json
index f2e682804e..4333ee9edb 100644
--- a/coins.json
+++ b/coins.json
@@ -7,7 +7,7 @@
 	"address_type_p2wpkh": 6,
 	"address_type_p2wsh": 10,
 	"signed_message_header": "Bitcoin Signed Message:\n",
-	"hash_genesis_block": ["000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"],
+	"hash_genesis_block": "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
 	"xpub_magic": "0488b21e",
 	"xprv_magic": "0488ade4",
 	"bip44": 0,
@@ -26,10 +26,7 @@
 	"address_type_p2wpkh": 3,
 	"address_type_p2wsh": 40,
 	"signed_message_header": "Bitcoin Signed Message:\n",
-	"hash_genesis_block": [
-		"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943",
-		"0cdf00b25a93ded11d73ebe1728cf7867f18e1f62aca9554b95e0f3026174e33"
-	],
+	"hash_genesis_block": "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943",
 	"xpub_magic": "043587cf",
 	"xprv_magic": "04358394",
 	"bip44": 1,
@@ -45,7 +42,7 @@
 	"address_type_p2wpkh": null,
 	"address_type_p2wsh": null,
 	"signed_message_header": "Namecoin Signed Message:\n",
-	"hash_genesis_block": ["000000000062b72c5e2ceb45fbc8587e807c155b0da735e6483dfba2f0a9c770"],
+	"hash_genesis_block": "000000000062b72c5e2ceb45fbc8587e807c155b0da735e6483dfba2f0a9c770",
 	"xpub_magic": "019da462",
 	"xprv_magic": "019d9cfe",
 	"bip44": 1,
@@ -61,7 +58,7 @@
 	"address_type_p2wpkh": null,
 	"address_type_p2wsh": null,
 	"signed_message_header": "Litecoin Signed Message:\n",
-	"hash_genesis_block": ["12a765e31ffd4059bada1e25190f6e98c99d9714d334efa41a195a7e7e04bfe2"],
+	"hash_genesis_block": "12a765e31ffd4059bada1e25190f6e98c99d9714d334efa41a195a7e7e04bfe2",
 	"xpub_magic": "019da462",
 	"xprv_magic": "019d9cfe",
 	"bip44": 2,
@@ -77,7 +74,7 @@
 	"address_type_p2wpkh": null,
 	"address_type_p2wsh": null,
 	"signed_message_header": "Dogecoin Signed Message:\n",
-	"hash_genesis_block": ["1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"],
+	"hash_genesis_block": "1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691",
 	"xpub_magic": "02facafd",
 	"xprv_magic": "02fac398",
 	"bip44": 3,
@@ -93,7 +90,7 @@
 	"address_type_p2wpkh": null,
 	"address_type_p2wsh": null,
 	"signed_message_header": "DarkCoin Signed Message:\n",
-	"hash_genesis_block": ["00000ffd590b1485b3caadc19b22e6379c733355108f107a430458cdf3407ab6"],
+	"hash_genesis_block": "00000ffd590b1485b3caadc19b22e6379c733355108f107a430458cdf3407ab6",
 	"xpub_magic": "02fe52cc",
 	"xprv_magic": "02fe52f8",
 	"bip44": 5,
@@ -109,11 +106,27 @@
 	"address_type_p2wpkh": null,
 	"address_type_p2wsh": null,
 	"signed_message_header": "Zcash Signed Message:\n",
-	"hash_genesis_block": ["027e3758c3a65b12aa1046462b486d0a63bfa1beae327897f56c5cfb7daaae71"],
+	"hash_genesis_block": "027e3758c3a65b12aa1046462b486d0a63bfa1beae327897f56c5cfb7daaae71",
 	"xpub_magic": "0488b21e",
 	"xprv_magic": "0488ade4",
 	"bip44": 133,
 	"default_fee_b": {
 		"Normal": 10
 	}
+}, {
+	"coin_name": "Testnet",
+	"coin_shortcut": "TAZ",
+	"address_type": 111,
+	"maxfee_kb": 10000000,
+	"address_type_p2sh": 196,
+	"address_type_p2wpkh": 3,
+	"address_type_p2wsh": 40,
+	"signed_message_header": "Bitcoin Signed Message:\n",
+	"hash_genesis_block": "0cdf00b25a93ded11d73ebe1728cf7867f18e1f62aca9554b95e0f3026174e33",
+	"xpub_magic": "043587cf",
+	"xprv_magic": "04358394",
+	"bip44": 1,
+	"default_fee_b": {
+		"Normal": 10
+	}
 }]