diff --git a/defs/bitcoin/capricoin.json b/defs/bitcoin/capricoin.json
new file mode 100644
index 000000000..2eef0c926
--- /dev/null
+++ b/defs/bitcoin/capricoin.json
@@ -0,0 +1,46 @@
+{
+  "coin_name": "Capricoin",
+  "coin_shortcut": "CPC",
+  "coin_label": "Capricoin",
+  "website": "https://capricoin.org",
+  "github": "https://github.com/Capricoinofficial/Capricoin",
+  "maintainer": "Tibor Arpas <tibor.arpas@infinit.sk>",
+  "curve_name": "secp256k1",
+  "address_type": 28,
+  "address_type_p2sh": 35,
+  "maxfee_kb": 2000000,
+  "minfee_kb": 1000,
+  "signed_message_header": "Capricoin Signed Message:\n",
+  "hash_genesis_block": "000007abc632537def4bce0806ca008150b19363f887ad0cb5cf582804f8bc3d",
+  "xprv_magic": 76066276,
+  "xpub_magic": 76067358,
+  "xpub_magic_segwit_p2sh": 77429938,
+  "xpub_magic_segwit_native": 78792518,
+  "bech32_prefix": null,
+  "cashaddr_prefix": null,
+  "slip44": 289,
+  "segwit": false,
+  "decred": false,
+  "fork_id": null,
+  "force_bip143": false,
+  "bip115": false,
+  "default_fee_b": {
+    "Low": 1,
+    "Economy": 7,
+    "Normal": 14,
+    "High": 20
+  },
+  "dust_limit": 546,
+  "blocktime_seconds": 60,
+  "uri_prefix": "capricoin",
+  "min_address_length": 27,
+  "max_address_length": 34,
+  "bitcore": [],
+  "blockbook": [
+    "https://blockbook.capricoin.org",
+    "https://blockbook2.capricoin.org",
+    "https://blockbook3.capricoin.org",
+    "https://blockbook4.capricoin.org"
+  ],
+  "cooldown": 100
+}
diff --git a/defs/bitcoin/capricoin.png b/defs/bitcoin/capricoin.png
new file mode 100644
index 000000000..005e907bc
Binary files /dev/null and b/defs/bitcoin/capricoin.png differ
diff --git a/defs/support.json b/defs/support.json
index 91aee0e42..e36366bb9 100644
--- a/defs/support.json
+++ b/defs/support.json
@@ -4,6 +4,7 @@
       "bitcoin:BCH": true,
       "bitcoin:BTC": true,
       "bitcoin:BTG": true,
+      "bitcoin:CPC": true,
       "bitcoin:DASH": true,
       "bitcoin:DOGE": true,
       "bitcoin:LTC": true,
@@ -53,6 +54,7 @@
       "bitcoin:BTC": "1.5.2",
       "bitcoin:BTCP": "1.6.2",
       "bitcoin:BTG": "1.6.2",
+      "bitcoin:CPC": "soon",
       "bitcoin:DASH": "1.5.2",
       "bitcoin:DCR": "1.6.2",
       "bitcoin:DGB": "1.6.0",
@@ -930,6 +932,7 @@
       "bitcoin:BTC": "2.0.5",
       "bitcoin:BTCP": "2.0.7",
       "bitcoin:BTG": "2.0.7",
+      "bitcoin:CPC": "soon",
       "bitcoin:DASH": "2.0.5",
       "bitcoin:DCR": "2.0.8",
       "bitcoin:DGB": "2.0.5",
diff --git a/protob/messages-bitcoin.proto b/protob/messages-bitcoin.proto
index 7b1f89f0c..67bd6a73c 100644
--- a/protob/messages-bitcoin.proto
+++ b/protob/messages-bitcoin.proto
@@ -130,6 +130,7 @@ message SignTx {
     optional uint32 expiry = 6;                         // only for Decred and Zcash
     optional bool overwintered = 7;                     // only for Zcash
     optional uint32 version_group_id = 8;               // only for Zcash, nVersionGroupId when overwintered is set
+    optional uint32 timestamp = 9;                      // only for Capricoin, transaction timestamp
 }
 
 /**
@@ -194,6 +195,7 @@ message TxAck {
         optional uint32 expiry = 10;            // only for Decred and Zcash
         optional bool overwintered = 11;        // only for Zcash
         optional uint32 version_group_id = 12;  // only for Zcash, nVersionGroupId when overwintered is set
+        optional uint32 timestamp = 13;         // only for Capricoin, transaction timestamp
         /**
         * Structure representing transaction input
         */