diff --git a/app/bitcoin/bitcoin.h b/app/bitcoin/bitcoin.h
new file mode 100644
index 0000000..059f226
--- /dev/null
+++ b/app/bitcoin/bitcoin.h
@@ -0,0 +1,62 @@
+#ifndef __BITCOIN__
+#define __BITCOIN__
+
+#include <stddef.h>
+#include <stdbool.h>
+#include "bitcoin/psbt.h"
+
+#define BTC_MAX_INPUTS 20
+#define BTC_MAX_OUTPUTS 20
+
+typedef enum {
+  BTC_INPUT_TYPE_LEGACY,
+  BTC_INPUT_TYPE_LEGACY_WITH_REDEEM,
+  BTC_INPUT_TYPE_P2WPKH,
+  BTC_INPUT_TYPE_P2WSH,
+} btc_input_type_t;
+
+typedef enum {
+  SIGHASH_DEFAULT = 0x00,
+  SIGHASH_ALL = 0x01,
+  SIGHASH_NONE = 0x02,
+  SIGHASH_SINGLE = 0x03,
+} btc_sighash_flag_t;
+
+typedef struct {
+  uint8_t* script_pubkey;
+  size_t script_pubkey_len;
+  uint8_t* redeem_script;
+  size_t redeem_script_len;
+  uint8_t* witness_script;
+  size_t witness_script_len;
+  uint8_t* nonwitness_utxo;
+  size_t nonwitness_utxo_len;
+  uint8_t* amount;
+  uint8_t* bip32_path;
+  uint32_t bip32_path_len;
+  uint32_t master_fingerprint;
+  uint32_t sighash_flag;
+  btc_input_type_t input_type;
+  bool witness;
+  bool can_sign;
+} psbt_input_data_t;
+
+typedef struct {
+  psbt_tx_t tx;
+  psbt_txin_t inputs[BTC_MAX_INPUTS];
+  psbt_txout_t outputs[BTC_MAX_OUTPUTS];
+  psbt_input_data_t input_data[BTC_MAX_INPUTS];
+  size_t input_count;
+  size_t output_count;
+
+  psbt_t psbt_out;
+  size_t index_in;
+  size_t index_out;
+  uint8_t hash_prevouts[SHA256_DIGEST_LENGTH];
+  uint8_t hash_sequence[SHA256_DIGEST_LENGTH];
+  uint8_t hash_outputs[SHA256_DIGEST_LENGTH];
+
+  app_err_t error;
+} btc_tx_ctx_t;
+
+#endif
diff --git a/app/core/core_btc.c b/app/core/core_btc.c
index 1ef8d9f..c4911c9 100644
--- a/app/core/core_btc.c
+++ b/app/core/core_btc.c
@@ -1,5 +1,6 @@
 #include "core.h"
 #include "mem.h"
+#include "bitcoin/bitcoin.h"
 #include "bitcoin/psbt.h"
 #include "bitcoin/compactsize.h"
 #include "crypto/script.h"
@@ -9,9 +10,6 @@
 #include "ur/ur_encode.h"
 #include "util/tlv.h"
 
-#define BTC_MAX_INPUTS 20
-#define BTC_MAX_OUTPUTS 20
-
 #define BTC_TXID_LEN 32
 #define BTC_MSG_MAGIC_LEN 25
 #define BTC_MSG_SIG_LEN 65
@@ -26,59 +24,8 @@ static const uint8_t P2PKH_SCRIPT_POST[2] = { 0x88, 0xac };
 
 const uint8_t *const BTC_MSG_MAGIC = (uint8_t *) "\030Bitcoin Signed Message:\n";
 
-enum btc_input_type {
-  BTC_INPUT_TYPE_LEGACY,
-  BTC_INPUT_TYPE_LEGACY_WITH_REDEEM,
-  BTC_INPUT_TYPE_P2WPKH,
-  BTC_INPUT_TYPE_P2WSH,
-};
-
-enum btc_sighash_flag {
-  SIGHASH_DEFAULT = 0x00,
-  SIGHASH_ALL = 0x01,
-  SIGHASH_NONE = 0x02,
-  SIGHASH_SINGLE = 0x03,
-};
-
-typedef struct {
-  uint8_t* script_pubkey;
-  size_t script_pubkey_len;
-  uint8_t* redeem_script;
-  size_t redeem_script_len;
-  uint8_t* witness_script;
-  size_t witness_script_len;
-  uint8_t* nonwitness_utxo;
-  size_t nonwitness_utxo_len;
-  uint8_t* amount;
-  uint8_t* bip32_path;
-  uint32_t bip32_path_len;
-  uint32_t master_fingerprint;
-  uint32_t sighash_flag;
-  enum btc_input_type input_type;
-  bool witness;
-  bool can_sign;
-} psbt_input_data_t;
-
-struct btc_tx_ctx {
-  psbt_tx_t tx;
-  psbt_txin_t inputs[BTC_MAX_INPUTS];
-  psbt_txout_t outputs[BTC_MAX_OUTPUTS];
-  psbt_input_data_t input_data[BTC_MAX_INPUTS];
-  size_t input_count;
-  size_t output_count;
-
-  psbt_t psbt_out;
-  size_t index_in;
-  size_t index_out;
-  uint8_t hash_prevouts[SHA256_DIGEST_LENGTH];
-  uint8_t hash_sequence[SHA256_DIGEST_LENGTH];
-  uint8_t hash_outputs[SHA256_DIGEST_LENGTH];
-
-  app_err_t error;
-};
-
 struct btc_utxo_ctx {
-  struct btc_tx_ctx* tx_ctx;
+  btc_tx_ctx_t* tx_ctx;
   uint32_t output_count;
   uint32_t input_index;
 };
@@ -100,7 +47,7 @@ static void core_btc_utxo_handler(psbt_txelem_t* elem) {
   utxo_ctx->tx_ctx->input_data[utxo_ctx->input_index].script_pubkey_len = tx_out->script_len;
 }
 
-static void core_btc_psbt_rec_handler(struct btc_tx_ctx* tx_ctx, size_t index, psbt_record_t* rec) {
+static void core_btc_psbt_rec_handler(btc_tx_ctx_t* tx_ctx, size_t index, psbt_record_t* rec) {
   if (rec->scope != PSBT_SCOPE_INPUTS) {
     return;
   } else if (index >= tx_ctx->input_count) {
@@ -150,7 +97,7 @@ static void core_btc_psbt_rec_handler(struct btc_tx_ctx* tx_ctx, size_t index, p
   }
 }
 
-static void core_btc_txelem_handler(struct btc_tx_ctx* tx_ctx, psbt_txelem_t* elem) {
+static void core_btc_txelem_handler(btc_tx_ctx_t* tx_ctx, psbt_txelem_t* elem) {
   switch (elem->elem_type) {
   case PSBT_TXELEM_TX:
     memcpy(&tx_ctx->tx, elem->elem.tx, sizeof(psbt_tx_t));
@@ -175,7 +122,7 @@ static void core_btc_txelem_handler(struct btc_tx_ctx* tx_ctx, psbt_txelem_t* el
 }
 
 static void core_btc_parser_cb(psbt_elem_t* rec) {
-  struct btc_tx_ctx* tx_ctx = (struct btc_tx_ctx*) rec->user_data;
+  btc_tx_ctx_t* tx_ctx = (btc_tx_ctx_t*) rec->user_data;
 
   if (rec->type == PSBT_ELEM_RECORD) {
     core_btc_psbt_rec_handler(tx_ctx, rec->index, rec->elem.rec);
@@ -184,7 +131,7 @@ static void core_btc_parser_cb(psbt_elem_t* rec) {
   }
 }
 
-static app_err_t core_btc_hash_legacy(struct btc_tx_ctx* tx_ctx, size_t index, uint8_t digest[SHA256_DIGEST_LENGTH]) {
+static app_err_t core_btc_hash_legacy(btc_tx_ctx_t* tx_ctx, size_t index, uint8_t digest[SHA256_DIGEST_LENGTH]) {
   SHA256_CTX sha256;
   sha256_Init(&sha256);
 
@@ -263,7 +210,7 @@ static app_err_t core_btc_hash_legacy(struct btc_tx_ctx* tx_ctx, size_t index, u
   return ERR_OK;
 }
 
-static app_err_t core_btc_hash_segwit(struct btc_tx_ctx* tx_ctx, size_t index, uint8_t digest[SHA256_DIGEST_LENGTH]) {
+static app_err_t core_btc_hash_segwit(btc_tx_ctx_t* tx_ctx, size_t index, uint8_t digest[SHA256_DIGEST_LENGTH]) {
   SHA256_CTX sha256;
   sha256_Init(&sha256);
 
@@ -365,7 +312,7 @@ static app_err_t core_btc_read_signature(uint8_t* data, uint8_t sighash, psbt_re
   return ERR_OK;
 }
 
-static app_err_t core_btc_sign_input(struct btc_tx_ctx* tx_ctx, size_t index) {
+static app_err_t core_btc_sign_input(btc_tx_ctx_t* tx_ctx, size_t index) {
   if (!tx_ctx->input_data[index].can_sign) {
     return ERR_OK;
   }
@@ -419,7 +366,7 @@ static app_err_t core_btc_sign_input(struct btc_tx_ctx* tx_ctx, size_t index) {
 }
 
 static void core_btc_sign_handler(psbt_elem_t* rec) {
-  struct btc_tx_ctx* tx_ctx = (struct btc_tx_ctx*) rec->user_data;
+  btc_tx_ctx_t* tx_ctx = (btc_tx_ctx_t*) rec->user_data;
 
   if ((rec->type == PSBT_ELEM_TXELEM) || tx_ctx->error != ERR_OK) {
     return;
@@ -524,7 +471,7 @@ static inline bool btc_validate_tx_hash(uint8_t* tx, size_t tx_len, uint8_t expe
   return memcmp(expected_hash, digest, SHA256_DIGEST_LENGTH) == 0;
 }
 
-static app_err_t core_btc_validate(struct btc_tx_ctx* tx_ctx) {
+static app_err_t core_btc_validate(btc_tx_ctx_t* tx_ctx) {
   uint32_t mfp;
 
   if (core_get_fingerprint(g_core.bip44_path, 0, &mfp) != ERR_OK) {
@@ -592,12 +539,11 @@ static app_err_t core_btc_validate(struct btc_tx_ctx* tx_ctx) {
   return can_sign_something ? ERR_OK : ERR_MISMATCH;
 }
 
-static app_err_t core_btc_confirm(struct btc_tx_ctx* tx_ctx) {
-  //TODO: implement
-  return ERR_OK;
+static inline app_err_t core_btc_confirm(btc_tx_ctx_t* tx_ctx) {
+  return ui_display_btc_tx(tx_ctx) == CORE_EVT_UI_OK ? ERR_OK : ERR_CANCEL;
 }
 
-static void core_btc_common_hashes(struct btc_tx_ctx* tx_ctx) {
+static void core_btc_common_hashes(btc_tx_ctx_t* tx_ctx) {
   SHA256_CTX sha256;
   sha256_Init(&sha256);
 
@@ -630,10 +576,10 @@ static void core_btc_common_hashes(struct btc_tx_ctx* tx_ctx) {
 }
 
 static app_err_t core_btc_psbt_run(const uint8_t* psbt_in, size_t psbt_len, uint8_t** psbt_out, size_t* out_len) {
-  struct btc_tx_ctx* tx_ctx = (struct btc_tx_ctx*) g_camera_fb[1];
-  memset(tx_ctx, 0, sizeof(struct btc_tx_ctx));
-  *psbt_out = &g_camera_fb[1][(sizeof(struct btc_tx_ctx) + 3) & ~0x3];
-  size_t psbt_out_len = CAMERA_FB_SIZE - ((sizeof(struct btc_tx_ctx) + 3) & ~0x3);
+  btc_tx_ctx_t* tx_ctx = (btc_tx_ctx_t*) g_camera_fb[1];
+  memset(tx_ctx, 0, sizeof(btc_tx_ctx_t));
+  *psbt_out = &g_camera_fb[1][(sizeof(btc_tx_ctx_t) + 3) & ~0x3];
+  size_t psbt_out_len = CAMERA_FB_SIZE - ((sizeof(btc_tx_ctx_t) + 3) & ~0x3);
 
   psbt_t psbt;
   psbt_init(&psbt, (uint8_t*) psbt_in, psbt_len);
diff --git a/app/core/core_eth.c b/app/core/core_eth.c
index a5c822f..6b33367 100644
--- a/app/core/core_eth.c
+++ b/app/core/core_eth.c
@@ -62,7 +62,7 @@ static app_err_t core_eth_sign(keycard_t* kc, uint8_t* out) {
 }
 
 static inline app_err_t core_eth_wait_tx_confirmation() {
-  return ui_display_tx(g_core.address, &g_core.data.eth_tx.content) == CORE_EVT_UI_OK ? ERR_OK : ERR_CANCEL;
+  return ui_display_eth_tx(g_core.address, &g_core.data.eth_tx.content) == CORE_EVT_UI_OK ? ERR_OK : ERR_CANCEL;
 }
 
 static inline app_err_t core_eth_wait_msg_confirmation(const uint8_t* msg, size_t msg_len) {
diff --git a/app/tasks/ui_task.c b/app/tasks/ui_task.c
index 3caaac6..4653e6f 100644
--- a/app/tasks/ui_task.c
+++ b/app/tasks/ui_task.c
@@ -50,8 +50,11 @@ void ui_task_entry(void* pvParameters) {
     case UI_CMD_MENU:
       g_ui_cmd.result = menu_run();
       break;
-    case UI_CMD_DISPLAY_TXN:
-      g_ui_cmd.result = dialog_confirm_tx();
+    case UI_CMD_DISPLAY_ETH_TX:
+      g_ui_cmd.result = dialog_confirm_eth_tx();
+      break;
+    case UI_CMD_DISPLAY_BTC_TX:
+      g_ui_cmd.result = dialog_confirm_btc_tx();
       break;
     case UI_CMD_DISPLAY_MSG:
       g_ui_cmd.result = dialog_confirm_msg();
diff --git a/app/ui/dialog.c b/app/ui/dialog.c
index 232434c..66dcea9 100644
--- a/app/ui/dialog.c
+++ b/app/ui/dialog.c
@@ -185,8 +185,8 @@ static void dialog_calculate_fees(bignum256* fees) {
   bignum256 gas_amount;
   bignum256 prime;
   bn_read_be(secp256k1.prime, &prime);
-  bn_read_compact_be(g_ui_cmd.params.txn.tx->startgas.value, g_ui_cmd.params.txn.tx->startgas.length, &gas_amount);
-  bn_read_compact_be(g_ui_cmd.params.txn.tx->gasprice.value, g_ui_cmd.params.txn.tx->gasprice.length, fees);
+  bn_read_compact_be(g_ui_cmd.params.eth_tx.tx->startgas.value, g_ui_cmd.params.eth_tx.tx->startgas.length, &gas_amount);
+  bn_read_compact_be(g_ui_cmd.params.eth_tx.tx->gasprice.value, g_ui_cmd.params.eth_tx.tx->gasprice.length, fees);
   bn_multiply(&gas_amount, fees, &prime);
 }
 
@@ -209,10 +209,10 @@ static i18n_str_id_t dialog_recognize_data(const txContent_t* tx) {
   }
 }
 
-app_err_t dialog_confirm_tx() {
+app_err_t dialog_confirm_eth_tx() {
   chain_desc_t chain;
   erc20_desc_t token;
-  chain.chain_id = g_ui_cmd.params.txn.tx->chainID;
+  chain.chain_id = g_ui_cmd.params.eth_tx.tx->chainID;
 
   uint8_t num[11];
   if (eth_db_lookup_chain(&chain) != ERR_OK) {
@@ -222,17 +222,17 @@ app_err_t dialog_confirm_tx() {
 
   i18n_str_id_t title;
   const uint8_t* to;
-  i18n_str_id_t data_type = dialog_recognize_data(g_ui_cmd.params.txn.tx);
+  i18n_str_id_t data_type = dialog_recognize_data(g_ui_cmd.params.eth_tx.tx);
 
   if (data_type == TX_DATA_ERC20) {
     title = TX_CONFIRM_ERC20_TITLE;
     token.chain = chain.chain_id;
-    token.addr = g_ui_cmd.params.txn.tx->destination;
+    token.addr = g_ui_cmd.params.eth_tx.tx->destination;
 
-    memmove((uint8_t*) g_ui_cmd.params.txn.tx->value.value, &g_ui_cmd.params.txn.tx->data[ETH_ERC20_VALUE_OFF], INT256_LENGTH);
-    ((txContent_t*) g_ui_cmd.params.txn.tx)->value.length = INT256_LENGTH;
+    memmove((uint8_t*) g_ui_cmd.params.eth_tx.tx->value.value, &g_ui_cmd.params.eth_tx.tx->data[ETH_ERC20_VALUE_OFF], INT256_LENGTH);
+    ((txContent_t*) g_ui_cmd.params.eth_tx.tx)->value.length = INT256_LENGTH;
 
-    to = &g_ui_cmd.params.txn.tx->data[ETH_ERC20_ADDR_OFF];
+    to = &g_ui_cmd.params.eth_tx.tx->data[ETH_ERC20_ADDR_OFF];
 
     if (eth_db_lookup_erc20(&token) != ERR_OK) {
       token.ticker = "???";
@@ -244,7 +244,7 @@ app_err_t dialog_confirm_tx() {
     title = TX_CONFIRM_TITLE;
     token.ticker = chain.ticker;
     token.decimals = 18;
-    to = g_ui_cmd.params.txn.tx->destination;
+    to = g_ui_cmd.params.eth_tx.tx->destination;
   }
 
   dialog_title(LSTR(title));
@@ -252,13 +252,13 @@ app_err_t dialog_confirm_tx() {
   screen_text_ctx_t ctx;
   ctx.y = TH_TITLE_HEIGHT;
 
-  dialog_address(&ctx, TX_SIGNER, ADDR_ETH, g_ui_cmd.params.txn.addr);
+  dialog_address(&ctx, TX_SIGNER, ADDR_ETH, g_ui_cmd.params.eth_tx.addr);
   dialog_address(&ctx, TX_ADDRESS, ADDR_ETH, to);
   dialog_chain(&ctx, chain.name);
   dialog_tx_data(&ctx, data_type);
 
   bignum256 data;
-  bn_read_compact_be(g_ui_cmd.params.txn.tx->value.value, g_ui_cmd.params.txn.tx->value.length, &data);
+  bn_read_compact_be(g_ui_cmd.params.eth_tx.tx->value.value, g_ui_cmd.params.eth_tx.tx->value.length, &data);
   dialog_amount(&ctx, TX_AMOUNT, &data, token.decimals, token.ticker);
 
   dialog_calculate_fees(&data);
@@ -281,6 +281,10 @@ app_err_t dialog_confirm_tx() {
   }
 }
 
+app_err_t dialog_confirm_btc_tx() {
+  return ERR_OK;
+}
+
 static void dialog_draw_message(const char* txt) {
   dialog_title("");
   dialog_footer(TH_TITLE_HEIGHT);
diff --git a/app/ui/dialog.h b/app/ui/dialog.h
index 46e7156..bf6bb79 100644
--- a/app/ui/dialog.h
+++ b/app/ui/dialog.h
@@ -16,7 +16,8 @@ app_err_t dialog_nav_hints_colors(icons_t left, icons_t right, uint16_t bg, uint
 app_err_t dialog_pager(size_t page, size_t last_page);
 app_err_t dialog_margin(uint16_t yOff, uint16_t height);
 
-app_err_t dialog_confirm_tx();
+app_err_t dialog_confirm_eth_tx();
+app_err_t dialog_confirm_btc_tx();
 app_err_t dialog_confirm_msg();
 app_err_t dialog_confirm_eip712();
 
diff --git a/app/ui/ui.c b/app/ui/ui.c
index 54a5ace..2732f92 100644
--- a/app/ui/ui.c
+++ b/app/ui/ui.c
@@ -32,10 +32,16 @@ core_evt_t ui_menu(const char* title, const menu_t* menu, i18n_str_id_t* selecte
   return ui_signal_wait(allow_usb);
 }
 
-core_evt_t ui_display_tx(const uint8_t* address, const txContent_t* tx) {
-  g_ui_cmd.type = UI_CMD_DISPLAY_TXN;
-  g_ui_cmd.params.txn.addr = address;
-  g_ui_cmd.params.txn.tx = tx;
+core_evt_t ui_display_eth_tx(const uint8_t* address, const txContent_t* tx) {
+  g_ui_cmd.type = UI_CMD_DISPLAY_ETH_TX;
+  g_ui_cmd.params.eth_tx.addr = address;
+  g_ui_cmd.params.eth_tx.tx = tx;
+  return ui_signal_wait(0);
+}
+
+core_evt_t ui_display_btc_tx(const btc_tx_ctx_t* tx) {
+  g_ui_cmd.type = UI_CMD_DISPLAY_BTC_TX;
+  g_ui_cmd.params.btc_tx.tx = tx;
   return ui_signal_wait(0);
 }
 
diff --git a/app/ui/ui.h b/app/ui/ui.h
index e82a443..781acea 100644
--- a/app/ui/ui.h
+++ b/app/ui/ui.h
@@ -3,6 +3,7 @@
 
 #include <stdint.h>
 #include "crypto/address.h"
+#include "bitcoin/bitcoin.h"
 #include "ethereum/ethUstream.h"
 #include "ethereum/eip712.h"
 #include "menu.h"
@@ -22,7 +23,8 @@ typedef enum {
 core_evt_t ui_qrscan(ur_type_t type, void* out);
 core_evt_t ui_qrscan_tx(ur_type_t* type, void* out);
 core_evt_t ui_menu(const char* title, const menu_t* menu, i18n_str_id_t* selected, i18n_str_id_t marked, uint8_t allow_usb);
-core_evt_t ui_display_tx(const uint8_t* address, const txContent_t* tx);
+core_evt_t ui_display_eth_tx(const uint8_t* address, const txContent_t* tx);
+core_evt_t ui_display_btc_tx(const btc_tx_ctx_t* tx);
 core_evt_t ui_display_msg(addr_type_t addr_type, const uint8_t* address, const uint8_t* msg, uint32_t len);
 core_evt_t ui_display_eip712(const uint8_t* address, const eip712_ctx_t* eip712);
 core_evt_t ui_display_ur_qr(const char* title, const uint8_t* data, uint32_t len, ur_type_t type);
diff --git a/app/ui/ui_internal.h b/app/ui/ui_internal.h
index ff74520..17e7dae 100644
--- a/app/ui/ui_internal.h
+++ b/app/ui/ui_internal.h
@@ -6,6 +6,7 @@
 
 #include "menu.h"
 #include "keypad/keypad.h"
+#include "bitcoin/bitcoin.h"
 #include "core/core.h"
 #include "ethereum/ethUstream.h"
 #include "qrcode/qrcode.h"
@@ -24,7 +25,8 @@ enum cmd_type {
   UI_CMD_INFO,
   UI_CMD_PROMPT,
   UI_CMD_MENU,
-  UI_CMD_DISPLAY_TXN,
+  UI_CMD_DISPLAY_ETH_TX,
+  UI_CMD_DISPLAY_BTC_TX,
   UI_CMD_DISPLAY_MSG,
   UI_CMD_DISPLAY_EIP712,
   UI_CMD_DISPLAY_QR,
@@ -56,11 +58,15 @@ struct cmd_wrong_auth {
   uint8_t retries;
 };
 
-struct cmd_txn {
+struct cmd_eth_txn {
   const uint8_t* addr;
   const txContent_t* tx;
 };
 
+struct cmd_btc_txn {
+  const btc_tx_ctx_t* tx;
+};
+
 struct cmd_msg {
   addr_type_t addr_type;
   const uint8_t* addr;
@@ -133,7 +139,8 @@ union cmd_params {
   struct cmd_info info;
   struct cmd_prompt prompt;
   struct cmd_wrong_auth wrong_auth;
-  struct cmd_txn txn;
+  struct cmd_eth_txn eth_tx;
+  struct cmd_btc_txn btc_tx;
   struct cmd_msg msg;
   struct cmd_eip712 eip712;
   struct cmd_qrout qrout;