diff --git a/app/Makefile.version b/app/Makefile.version
index 535f51d..0d6dbc7 100644
--- a/app/Makefile.version
+++ b/app/Makefile.version
@@ -3,4 +3,4 @@ APPVERSION_M=0
 # This is the minor version
 APPVERSION_N=0
 # This is the patch version
-APPVERSION_P=5
+APPVERSION_P=6
diff --git a/app/src/apdu_handler.c b/app/src/apdu_handler.c
index fcd963c..64415a1 100644
--- a/app/src/apdu_handler.c
+++ b/app/src/apdu_handler.c
@@ -26,6 +26,7 @@
 #include "coin.h"
 #include "crypto.h"
 #include "crypto_helper.h"
+#include "hash.h"
 #include "tx.h"
 #include "view.h"
 #include "view_internal.h"
@@ -159,6 +160,26 @@ __Z_INLINE void handleSign(volatile uint32_t *flags, volatile uint32_t *tx, uint
     *flags |= IO_ASYNCH_REPLY;
 }
 
+__Z_INLINE void handleSignHash(volatile uint32_t *flags, volatile uint32_t *tx, uint32_t rx) {
+    zemu_log("handleSignHash\n");
+    if (!process_chunk(tx, rx)) {
+        THROW(APDU_CODE_OK);
+    }
+
+    const char *error_msg = hash_parse();
+    CHECK_APP_CANARY()
+    if (error_msg != NULL) {
+        const int error_msg_length = strnlen(error_msg, sizeof(G_io_apdu_buffer));
+        memcpy(G_io_apdu_buffer, error_msg, error_msg_length);
+        *tx += (error_msg_length);
+        THROW(APDU_CODE_DATA_INVALID);
+    }
+
+    view_review_init(hash_getItem, hash_getNumItems, app_sign_hash);
+    view_review_show(REVIEW_TXN);
+    *flags |= IO_ASYNCH_REPLY;
+}
+
 __Z_INLINE void handle_getversion(__Z_UNUSED volatile uint32_t *flags, volatile uint32_t *tx) {
     G_io_apdu_buffer[0] = 0;
 
@@ -216,6 +237,12 @@ void handleApdu(volatile uint32_t *flags, volatile uint32_t *tx, uint32_t rx) {
                     handleSign(flags, tx, rx);
                     break;
                 }
+
+                case INS_SIGN_HASH: {
+                    CHECK_PIN_VALIDATED()
+                    handleSignHash(flags, tx, rx);
+                    break;
+                }
                 default:
                     THROW(APDU_CODE_INS_NOT_SUPPORTED);
             }
diff --git a/app/src/coin.h b/app/src/coin.h
index 6f3f5a4..b1b330b 100644
--- a/app/src/coin.h
+++ b/app/src/coin.h
@@ -26,6 +26,7 @@ typedef enum {
     UNSUPPORTED = 0xFF,
 } address_encoding_e;
 
+#define INS_SIGN_HASH 0x3
 #define HDPATH_LEN_DEFAULT 5
 #define HDPATH_0_DEFAULT (0x80000000u | 0x2c)    // 44
 #define HDPATH_1_DEFAULT (0x80000000u | 0x2328)  // 9000
diff --git a/app/src/common/actions.h b/app/src/common/actions.h
index baf2bfc..0ea0ce6 100644
--- a/app/src/common/actions.h
+++ b/app/src/common/actions.h
@@ -46,7 +46,22 @@ __Z_INLINE void app_sign() {
     uint16_t replyLen = 0;
 
     MEMZERO(G_io_apdu_buffer, IO_APDU_BUFFER_SIZE);
-    const zxerr_t err = crypto_sign(G_io_apdu_buffer, IO_APDU_BUFFER_SIZE - 3, &replyLen);
+    const zxerr_t err = crypto_sign(G_io_apdu_buffer, IO_APDU_BUFFER_SIZE - 3, &replyLen, false);
+
+    if (err != zxerr_ok || replyLen == 0) {
+        set_code(G_io_apdu_buffer, 0, APDU_CODE_SIGN_VERIFY_ERROR);
+        io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, 2);
+    } else {
+        set_code(G_io_apdu_buffer, replyLen, APDU_CODE_OK);
+        io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, replyLen + 2);
+    }
+}
+
+__Z_INLINE void app_sign_hash() {
+    uint16_t replyLen = 0;
+
+    MEMZERO(G_io_apdu_buffer, IO_APDU_BUFFER_SIZE);
+    const zxerr_t err = crypto_sign(G_io_apdu_buffer, IO_APDU_BUFFER_SIZE - 3, &replyLen, true);
 
     if (err != zxerr_ok || replyLen == 0) {
         set_code(G_io_apdu_buffer, 0, APDU_CODE_SIGN_VERIFY_ERROR);
diff --git a/app/src/crypto.c b/app/src/crypto.c
index d566e64..24c118b 100644
--- a/app/src/crypto.c
+++ b/app/src/crypto.c
@@ -68,7 +68,7 @@ __Z_INLINE zxerr_t compressPubkey(const uint8_t *pubkey, uint16_t pubkeyLen, uin
     return zxerr_ok;
 }
 
-zxerr_t crypto_sign(uint8_t *signature, uint16_t signatureMaxlen, uint16_t *sigSize) {
+zxerr_t crypto_sign(uint8_t *signature, uint16_t signatureMaxlen, uint16_t *sigSize, bool hash) {
     if (signature == NULL || sigSize == NULL) {
         return zxerr_invalid_crypto_settings;
     }
@@ -78,7 +78,11 @@ zxerr_t crypto_sign(uint8_t *signature, uint16_t signatureMaxlen, uint16_t *sigS
     // Hash it
     const uint8_t *message = tx_get_buffer();
     const uint16_t messageLen = tx_get_buffer_length();
-    crypto_sha256(message, messageLen, messageDigest, CX_SHA256_SIZE);
+    if (!hash) {
+        crypto_sha256(message, messageLen, messageDigest, CX_SHA256_SIZE);
+    } else {
+        MEMCPY(messageDigest, message, messageLen);
+    }
 
     cx_ecfp_private_key_t cx_privateKey = {0};
     uint8_t privateKeyData[64] = {0};
diff --git a/app/src/crypto.h b/app/src/crypto.h
index 2bdda5c..a0b1a8e 100644
--- a/app/src/crypto.h
+++ b/app/src/crypto.h
@@ -31,7 +31,7 @@ extern uint8_t change_address[20];
 
 zxerr_t crypto_fillAddress(uint8_t *buffer, uint16_t bufferLen, uint16_t *addrResponseLen);
 
-zxerr_t crypto_sign(uint8_t *signature, uint16_t signatureMaxlen, uint16_t *sigSize);
+zxerr_t crypto_sign(uint8_t *signature, uint16_t signatureMaxlen, uint16_t *sigSize, bool hash);
 
 zxerr_t crypto_get_address(void);
 
diff --git a/app/src/hash.c b/app/src/hash.c
new file mode 100644
index 0000000..6cb06b2
--- /dev/null
+++ b/app/src/hash.c
@@ -0,0 +1,72 @@
+/*******************************************************************************
+ *   (c) 2018 - 2022 Zondax AG
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ ********************************************************************************/
+
+#include <stdio.h>
+
+#include "app_mode.h"
+#include "coin.h"
+#include "crypto.h"
+#include "crypto_helper.h"
+#include "parser_impl.h"
+#include "tx.h"
+#include "zxerror.h"
+#include "zxformat.h"
+#include "zxmacros.h"
+
+const char *hash_parse() {
+    const uint8_t *data = tx_get_buffer();
+    const size_t dataLen = tx_get_buffer_length();
+    if (data == NULL || dataLen == 0) {
+        return parser_getErrorDescription(parser_no_data);
+    }
+
+    if (dataLen != 32) {
+        return parser_getErrorDescription(parser_unexpected_buffer_end);
+    }
+    return NULL;
+}
+
+zxerr_t hash_getNumItems(uint8_t *num_items) {
+    zemu_log_stack("hash_getNumItems");
+    *num_items = 1;
+    return zxerr_ok;
+}
+
+zxerr_t hash_getItem(int8_t displayIdx, char *outKey, uint16_t outKeyLen, char *outVal, uint16_t outValLen, uint8_t pageIdx,
+                     uint8_t *pageCount) {
+    ZEMU_LOGF(200, "[hash_getItem] %d/%d\n", displayIdx, pageIdx)
+
+    MEMZERO(outKey, outKeyLen);
+    MEMZERO(outVal, outValLen);
+    snprintf(outKey, outKeyLen, "?");
+    snprintf(outVal, outValLen, " ");
+    *pageCount = 1;
+
+    const uint8_t *hash = tx_get_buffer();
+    const uint16_t hashLength = tx_get_buffer_length();
+
+    if (hashLength == 0) {
+        return zxerr_no_data;
+    }
+
+    if (displayIdx == 0) {
+        snprintf(outKey, outKeyLen, "Hash");
+        pageStringHex(outVal, outValLen, (const char *)hash, hashLength, pageIdx, pageCount);
+        return zxerr_ok;
+    }
+
+    return zxerr_no_data;
+}
diff --git a/app/src/hash.h b/app/src/hash.h
new file mode 100644
index 0000000..c040d60
--- /dev/null
+++ b/app/src/hash.h
@@ -0,0 +1,35 @@
+/*******************************************************************************
+ *   (c) 2018 - 2022 Zondax AG
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ ********************************************************************************/
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include "zxerror.h"
+
+const char *hash_parse();
+
+// Return the number of items in the address view
+zxerr_t hash_getNumItems(uint8_t *num_items);
+
+// Gets an specific item from the address view (including paging)
+zxerr_t hash_getItem(int8_t displayIdx, char *outKey, uint16_t outKeyLen, char *outValue, uint16_t outValueLen,
+                     uint8_t pageIdx, uint8_t *pageCount);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/app/src/parser_impl.c b/app/src/parser_impl.c
index df0d471..ea2b6d8 100644
--- a/app/src/parser_impl.c
+++ b/app/src/parser_impl.c
@@ -16,6 +16,7 @@
 
 #include "parser_impl.h"
 
+#include "app_mode.h"
 #include "parser_impl_common.h"
 #include "tx_cchain.h"
 #include "tx_pchain.h"
@@ -154,31 +155,35 @@ parser_error_t _read(parser_context_t *ctx, parser_tx_t *v) {
 
 parser_error_t getNumItems(const parser_context_t *ctx, uint8_t *numItems) {
     *numItems = 0;
+    const uint8_t expertModeHashField = app_mode_expert() ? 1 : 0;
     switch (ctx->tx_obj->tx_type) {
         case p_export_tx:
             // Tx + fee + Amounts(= n_outs) + Addresses
             *numItems = 2 + ctx->tx_obj->tx.p_export_tx.secp_outs.n_addrs +
-                        parser_get_renderable_outputs_number(ctx->tx_obj->tx.p_export_tx.secp_outs.out_render_mask);
+                        parser_get_renderable_outputs_number(ctx->tx_obj->tx.p_export_tx.secp_outs.out_render_mask) +
+                        expertModeHashField;
             break;
         case p_import_tx:
             // Tx + fee + Amounts(= n_outs) + Addresses
             *numItems = 2 + ctx->tx_obj->tx.p_import_tx.base_secp_outs.n_addrs +
-                        parser_get_renderable_outputs_number(ctx->tx_obj->tx.p_import_tx.base_secp_outs.out_render_mask);
+                        parser_get_renderable_outputs_number(ctx->tx_obj->tx.p_import_tx.base_secp_outs.out_render_mask) +
+                        expertModeHashField;
             break;
         case c_export_tx:
             // Tx + fee + Amounts(= n_outs) + Addresses
             *numItems = 2 + ctx->tx_obj->tx.c_export_tx.secp_outs.n_addrs +
-                        parser_get_renderable_outputs_number(ctx->tx_obj->tx.c_export_tx.secp_outs.out_render_mask);
+                        parser_get_renderable_outputs_number(ctx->tx_obj->tx.c_export_tx.secp_outs.out_render_mask) +
+                        expertModeHashField;
             break;
         case c_import_tx:
             // Tx + fee + (amount + address) * n_outs
-            *numItems = 2 + (2 * ctx->tx_obj->tx.c_import_tx.evm_outs.n_outs);
+            *numItems = 2 + (2 * ctx->tx_obj->tx.c_import_tx.evm_outs.n_outs) + expertModeHashField;
             break;
         case add_delegator_tx:
-            *numItems = 6;
+            *numItems = 6 + expertModeHashField;
             break;
         case add_validator_tx:
-            *numItems = 7;
+            *numItems = 7 + expertModeHashField;
             break;
         default:
             break;
diff --git a/app/src/parser_impl.h b/app/src/parser_impl.h
index f1b48ab..7f43366 100644
--- a/app/src/parser_impl.h
+++ b/app/src/parser_impl.h
@@ -27,6 +27,7 @@ extern "C" {
 
 parser_error_t _read(parser_context_t *ctx, parser_tx_t *v);
 parser_error_t getNumItems(const parser_context_t *ctx, uint8_t *numItems);
+const char *parser_getErrorDescription(parser_error_t err);
 #ifdef __cplusplus
 }
 #endif
diff --git a/app/src/parser_print_common.c b/app/src/parser_print_common.c
index 4aee9ef..d1b6a33 100644
--- a/app/src/parser_print_common.c
+++ b/app/src/parser_print_common.c
@@ -185,3 +185,22 @@ parser_error_t printNodeId(const uint8_t *nodeId, char *outVal, uint16_t outValL
 
     return parser_ok;
 }
+
+parser_error_t printHash(const parser_context_t *ctx, char *outVal, uint16_t outValLen, uint8_t pageIdx,
+                         uint8_t *pageCount) {
+    unsigned char hash[CX_SHA256_SIZE] = {0};
+
+#if defined(TARGET_NANOS) || defined(TARGET_NANOS2) || defined(TARGET_NANOX) || defined(TARGET_STAX)
+    cx_sha256_t hash_ctx;
+    memset(&hash_ctx, 0, sizeof(hash_ctx));
+    CHECK_CX_PARSER_OK(cx_sha256_init_no_throw(&hash_ctx));
+    CHECK_CX_PARSER_OK(cx_hash_no_throw(&hash_ctx.header, CX_LAST, ctx->buffer, ctx->bufferLen, hash, sizeof(hash)));
+#else
+    picohash_ctx_t hash_ctx;
+    picohash_init_sha256(&hash_ctx);
+    picohash_update(&hash_ctx, ctx->buffer, ctx->bufferLen);
+    picohash_final(&hash_ctx, &hash);
+#endif
+    pageStringHex(outVal, outValLen, (const char *)hash, sizeof(hash), pageIdx, pageCount);
+    return parser_ok;
+}
diff --git a/app/src/parser_print_common.h b/app/src/parser_print_common.h
index 5769c65..c6bc29d 100644
--- a/app/src/parser_print_common.h
+++ b/app/src/parser_print_common.h
@@ -37,6 +37,7 @@ parser_error_t printTimestamp(uint64_t timestamp, char *outVal, uint16_t outValL
 
 parser_error_t printNodeId(const uint8_t *nodeId, char *outVal, uint16_t outValLen, uint8_t pageIdx, uint8_t *pageCount);
 
+parser_error_t printHash(const parser_context_t *ctx, char *outVal, uint16_t outValLen, uint8_t pageIdx, uint8_t *pageCount);
 #ifdef __cplusplus
 }
 
diff --git a/app/src/tx_cchain.c b/app/src/tx_cchain.c
index d4474be..7d04224 100644
--- a/app/src/tx_cchain.c
+++ b/app/src/tx_cchain.c
@@ -156,6 +156,14 @@ parser_error_t print_c_export_tx(const parser_context_t *ctx, uint8_t displayIdx
         return parser_ok;
     }
 
+    if (displayIdx == ctx->tx_obj->tx.c_export_tx.secp_outs.n_addrs +
+                          parser_get_renderable_outputs_number(ctx->tx_obj->tx.c_export_tx.secp_outs.out_render_mask) + 1 +
+                          1) {
+        snprintf(outKey, outKeyLen, "Hash");
+        printHash(ctx, outVal, outValLen, pageIdx, pageCount);
+        return parser_ok;
+    }
+
     return parser_display_idx_out_of_range;
 }
 
@@ -209,5 +217,11 @@ parser_error_t print_c_import_tx(const parser_context_t *ctx, uint8_t displayIdx
         return parser_ok;
     }
 
+    if (displayIdx == (2 * ctx->tx_obj->tx.c_import_tx.evm_outs.n_outs) + 1 + 1) {
+        snprintf(outKey, outKeyLen, "Hash");
+        printHash(ctx, outVal, outValLen, pageIdx, pageCount);
+        return parser_ok;
+    }
+
     return parser_display_idx_out_of_range;
 }
diff --git a/app/src/tx_pchain.c b/app/src/tx_pchain.c
index dbb78b8..e643437 100644
--- a/app/src/tx_pchain.c
+++ b/app/src/tx_pchain.c
@@ -15,6 +15,7 @@
  ********************************************************************************/
 #include "tx_pchain.h"
 
+#include "app_mode.h"
 #include "parser_impl_common.h"
 #include "parser_print_common.h"
 #include "zxformat.h"
@@ -180,7 +181,7 @@ parser_error_t parser_pchain(parser_context_t *c, parser_tx_t *v) {
 
 parser_error_t print_add_del_val_tx(const parser_context_t *ctx, uint8_t displayIdx, char *outKey, uint16_t outKeyLen,
                                     char *outVal, uint16_t outValLen, uint8_t pageIdx, uint8_t *pageCount) {
-    if (ctx->tx_obj->tx_type == add_delegator_tx && displayIdx == 5) {
+    if (ctx->tx_obj->tx_type == add_delegator_tx && displayIdx >= 5) {
         displayIdx += 1;
     }
 
@@ -222,6 +223,11 @@ parser_error_t print_add_del_val_tx(const parser_context_t *ctx, uint8_t display
                 printAmount64(fee, AMOUNT_DECIMAL_PLACES, ctx->tx_obj->network_id, outVal, outValLen, pageIdx, pageCount));
             break;
         default:
+            if (app_mode_expert() && displayIdx == 7) {
+                snprintf(outKey, outKeyLen, "Hash");
+                printHash(ctx, outVal, outValLen, pageIdx, pageCount);
+                return parser_ok;
+            }
             return parser_display_idx_out_of_range;
     }
 
@@ -277,6 +283,14 @@ parser_error_t print_p_export_tx(const parser_context_t *ctx, uint8_t displayIdx
         return parser_ok;
     }
 
+    if (displayIdx == ctx->tx_obj->tx.p_export_tx.secp_outs.n_addrs +
+                          parser_get_renderable_outputs_number(ctx->tx_obj->tx.p_export_tx.secp_outs.out_render_mask) + 1 +
+                          1) {
+        snprintf(outKey, outKeyLen, "Hash");
+        printHash(ctx, outVal, outValLen, pageIdx, pageCount);
+        return parser_ok;
+    }
+
     return parser_display_idx_out_of_range;
 }
 
@@ -330,5 +344,12 @@ parser_error_t print_p_import_tx(const parser_context_t *ctx, uint8_t displayIdx
         return parser_ok;
     }
 
+    if (displayIdx ==
+        ctx->tx_obj->tx.p_import_tx.base_secp_outs.n_addrs + ctx->tx_obj->tx.p_import_tx.base_secp_outs.n_outs + 1 + 1) {
+        snprintf(outKey, outKeyLen, "Hash");
+        printHash(ctx, outVal, outValLen, pageIdx, pageCount);
+        return parser_ok;
+    }
+
     return parser_display_idx_out_of_range;
 }
diff --git a/js/src/consts.ts b/js/src/consts.ts
index b466c58..d87a0c4 100644
--- a/js/src/consts.ts
+++ b/js/src/consts.ts
@@ -4,4 +4,12 @@ export const P2_VALUES = {
   DEFAULT: 0x00,
 };
 
+export const enum INS {
+  GET_VERSION = 0x00,
+  GET_ADDR = 0x01,
+  SIGN = 0x02,
+  SIGN_HASH = 0x03,
+}
+
 export const PKLEN = 33;
+export const HASH_LEN = 32;
diff --git a/js/src/index.ts b/js/src/index.ts
index b7f8c42..c718b71 100644
--- a/js/src/index.ts
+++ b/js/src/index.ts
@@ -14,7 +14,7 @@
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  ******************************************************************************* */
-import { P2_VALUES } from "./consts";
+import { HASH_LEN, INS, P2_VALUES } from "./consts";
 import { ResponseAddress, ResponseSign, FlareIns } from "./types";
 
 import GenericApp, {
@@ -30,7 +30,6 @@ import { processGetAddrResponse, serializeHrp } from "./helper";
 export * from "./types";
 
 export default class FlareApp extends GenericApp {
-  readonly INS!: FlareIns;
   constructor(transport: Transport) {
     if (transport == null) throw new Error("Transport has not been defined");
 
@@ -40,6 +39,7 @@ export default class FlareApp extends GenericApp {
         GET_VERSION: 0x00,
         GET_ADDR: 0x01,
         SIGN: 0x02,
+        SIGN_HASH: 0x03,
       },
       p1Values: {
         ONLY_RETRIEVE: 0x00,
@@ -71,7 +71,7 @@ export default class FlareApp extends GenericApp {
     return this._pubkey(path, true, hrp);
   }
 
-  async signSendChunk(chunkIdx: number, chunkNum: number, chunk: Buffer): Promise<ResponseSign> {
+  async signSendChunk(chunkIdx: number, chunkNum: number, chunk: Buffer, ins: INS): Promise<ResponseSign> {
     let payloadType = PAYLOAD_TYPE.ADD;
     if (chunkIdx === 1) {
       payloadType = PAYLOAD_TYPE.INIT;
@@ -81,7 +81,7 @@ export default class FlareApp extends GenericApp {
     }
 
     return await this.transport
-      .send(this.CLA, this.INS.SIGN, payloadType, 0, chunk, [
+      .send(this.CLA, ins, payloadType, 0, chunk, [
         LedgerError.NoErrors,
         LedgerError.DataIsInvalid,
         LedgerError.BadKeyHandle,
@@ -120,7 +120,7 @@ export default class FlareApp extends GenericApp {
 
   async sign(path: string, message: Buffer): Promise<ResponseSign> {
     const chunks = this.prepareChunks(path, message);
-    return await this.signSendChunk(1, chunks.length, chunks[0]).then(async (response) => {
+    return await this.signSendChunk(1, chunks.length, chunks[0], INS.SIGN).then(async (response) => {
       let result: ResponseSign = {
         returnCode: response.returnCode,
         errorMessage: response.errorMessage,
@@ -128,7 +128,30 @@ export default class FlareApp extends GenericApp {
 
       for (let i = 1; i < chunks.length; i += 1) {
         // eslint-disable-next-line no-await-in-loop
-        result = await this.signSendChunk(1 + i, chunks.length, chunks[i]);
+        result = await this.signSendChunk(1 + i, chunks.length, chunks[i], INS.SIGN);
+        if (result.returnCode !== LedgerError.NoErrors) {
+          break;
+        }
+      }
+      return result;
+    }, processErrorResponse);
+  }
+
+  async signHash(path: string, hash: Buffer): Promise<ResponseSign> {
+    if (hash.length !== HASH_LEN) {
+      throw new Error("Invalid hash length");
+    }
+
+    const chunks = this.prepareChunks(path, hash);
+    return await this.signSendChunk(1, chunks.length, chunks[0], INS.SIGN_HASH).then(async (response) => {
+      let result: ResponseSign = {
+        returnCode: response.returnCode,
+        errorMessage: response.errorMessage,
+      };
+
+      for (let i = 1; i < chunks.length; i += 1) {
+        // eslint-disable-next-line no-await-in-loop
+        result = await this.signSendChunk(1 + i, chunks.length, chunks[i], INS.SIGN_HASH);
         if (result.returnCode !== LedgerError.NoErrors) {
           break;
         }
diff --git a/js/src/types.ts b/js/src/types.ts
index 175bc9f..6713285 100644
--- a/js/src/types.ts
+++ b/js/src/types.ts
@@ -4,6 +4,7 @@ export interface FlareIns extends INSGeneric {
   GET_VERSION: 0x00;
   GET_ADDR: 0x01;
   SIGN: 0x02;
+  SIGN_HASH: 0x03;
 }
 
 export interface ResponseAddress extends ResponseBase {
diff --git a/tests/testcases.json b/tests/testcases.json
index 52608cf..3c23229 100644
--- a/tests/testcases.json
+++ b/tests/testcases.json
@@ -15,7 +15,9 @@
             "1 | Amount : 10.001 C2FLR",
             "2 | Address [1/2] : costwo1mwy6yvuk8xjl87scxfvvl63xtex3enn",
             "2 | Address [2/2] : vwcckmr",
-            "3 | Fee : 1 C2FLR"
+            "3 | Fee : 1 C2FLR",
+            "4 | Hash [1/2] : fca356a36fa8ab1b3b6a6a7e5ff58cc7dc82bb",
+            "4 | Hash [2/2] : 09110093c93820fc45d72c776e"
         ]
     },
     {
@@ -44,7 +46,9 @@
             "4 | Amount : 10.001000001 C2FLR",
             "5 | Address [1/2] : costwo1mwy6yvuk8xjl87scxfvvl63xtex3enn",
             "5 | Address [2/2] : vwcckmr",
-            "6 | Fee : 18446744064.708551615 C2FLR"
+            "6 | Fee : 18446744064.708551615 C2FLR",
+            "7 | Hash [1/2] : d72e803ccb6d9e9a472ad72f3ca2e750375462",
+            "7 | Hash [2/2] : 0a47f8c9dab43cde2a61854857"
         ]
     },
     {
@@ -63,7 +67,9 @@
             "1 | Amount : 10 C2FLR",
             "2 | Address [1/2] : costwo1mwy6yvuk8xjl87scxfvvl63xtex3enn",
             "2 | Address [2/2] : vwcckmr",
-            "3 | Fee : 0.001 C2FLR"
+            "3 | Fee : 0.001 C2FLR",
+            "4 | Hash [1/2] : b8e2bde38c114bc5052e06bda256e35389c231",
+            "4 | Hash [2/2] : df2e1514c61d52460b7d9e72d2"
         ]
     },
     {
@@ -88,7 +94,9 @@
             "3 | Total stake : 50000 C2FLR",
             "4 | Rewards to [1/2] : costwo1mwy6yvuk8xjl87scxfvvl63xtex3enn",
             "4 | Rewards to [2/2] : vwcckmr",
-            "5 | Fee : 0 C2FLR"
+            "5 | Fee : 0 C2FLR",
+            "6 | Hash [1/2] : 31a6ae7a1b013cc42139c6068c6c4e5e0f54f0",
+            "6 | Hash [2/2] : be5e7df8b23994eab6879df943"
         ]
     },
     {
@@ -109,13 +117,15 @@
         "output_expert": [
             "0 | Validator [1/2] : NodeID-BR9YCsrXGVsc8sUoraVrBkWemnPGRSq",
             "0 | Validator [2/2] : YZ",
-            "1 | Start time: 2023-12-07 15:48:39 UTC",
-            "2 | End time: 2023-12-19 14:27:29 UTC",
-            "3 | Total stake: 1000000.1 C2FLR",
+            "1 | Start time : 2023-12-07 15:48:39 UTC",
+            "2 | End time : 2023-12-19 14:27:29 UTC",
+            "3 | Total stake : 1000000.1 C2FLR",
             "4 | Rewards to [1/2] : costwo1mwy6yvuk8xjl87scxfvvl63xtex3enn",
             "4 | Rewards to [2/2] : vwcckmr",
-            "5 | Delegate fee: 10 %",
-            "6 | Fee: 0 C2FLR"
+            "5 | Delegate fee : 10 %",
+            "6 | Fee : 0 C2FLR",
+            "7 | Hash [1/2] : 702314ffbbba8be44aafc2da46c8690b54d567",
+            "7 | Hash [2/2] : 28ebd41f9056f89c0ad41f4a40"
         ]
     },
     {
@@ -134,7 +144,9 @@
             "1 | Amount : 1051010 C2FLR",
             "2 | Address [1/2] : costwo1mwy6yvuk8xjl87scxfvvl63xtex3enn",
             "2 | Address [2/2] : vwcckmr",
-            "3 | Fee : 0.001 C2FLR"
+            "3 | Fee : 0.001 C2FLR",
+            "4 | Hash [1/2] : c4f6fac7b240949e5de67067ca7fe24c868198",
+            "4 | Hash [2/2] : 07aeebee9e29acbfd52cce9ed3"
         ]
     },
     {
@@ -149,10 +161,13 @@
             "3 | Fee : 0.00028075 C2FLR"
         ],
         "output_expert": [
-            "0 | Import : P to C chain",
+            "0 | Import : C from P chain",
+            "1 | Amount : 1051009.99971925 C2FLR",
             "2 | Address [1/2] : 0x5a6a8c28a2fc040df3b7490440c50f00099c",
             "2 | Address [2/2] : 957a",
-            "3 | Fee : 0.00028075 C2FLR"
+            "3 | Fee : 0.00028075 C2FLR",
+            "4 | Hash [1/2] : 6645e6aefb1583eb245cafa615af51b679feae",
+            "4 | Hash [2/2] : e278151d38e8f060c8c756fd10"
         ]
     },
     {
@@ -171,7 +186,9 @@
             "1 | Amount : 1.001 FLR",
             "2 | Address [1/2] : flare1mwy6yvuk8xjl87scxfvvl63xtex3ennv",
             "2 | Address [2/2] : kkpasz",
-            "3 | Fee : 0.00028075 FLR"
+            "3 | Fee : 0.00028075 FLR",
+            "4 | Hash [1/2] : 572e1830c7c59ecc9eadc437c7243224a77ed3",
+            "4 | Hash [2/2] : 85eef2163dc92802e38c494c84"
         ]
     },
     {
@@ -190,7 +207,9 @@
             "1 | Amount : 2.1351 FLR",
             "2 | Address [1/2] : flare1mwy6yvuk8xjl87scxfvvl63xtex3ennv",
             "2 | Address [2/2] : kkpasz",
-            "3 | Fee : 0.01234 FLR"
+            "3 | Fee : 0.01234 FLR",
+            "4 | Hash [1/2] : 033412c293b34e5deff5c497fdf9addb201130",
+            "4 | Hash [2/2] : b920831a9242b23488078d3723"
         ]
     },
     {
@@ -209,7 +228,9 @@
             "1 | Amount : 2.1341 FLR",
             "2 | Address [1/2] : flare1mwy6yvuk8xjl87scxfvvl63xtex3ennv",
             "2 | Address [2/2] : kkpasz",
-            "3 | Fee : 0.001 FLR"
+            "3 | Fee : 0.001 FLR",
+            "4 | Hash [1/2] : ee779397f51a379e7b1719cfc2929aab32321d",
+            "4 | Hash [2/2] : e59a2b745c477abdc6d818601e"
         ]
     },
     {
@@ -228,7 +249,9 @@
             "1 | Amount : 4.2672 FLR",
             "2 | Address [1/2] : flare1mwy6yvuk8xjl87scxfvvl63xtex3ennv",
             "2 | Address [2/2] : kkpasz",
-            "3 | Fee : 0.001 FLR"
+            "3 | Fee : 0.001 FLR",
+            "4 | Hash [1/2] : d275b323622305ae84375e1deb2818e2f4c332",
+            "4 | Hash [2/2] : 724d17eefee674bbe57c9403b1"
         ]
     },
     {
@@ -243,11 +266,13 @@
             "3 | Fee : 0.00030321 FLR"
         ],
         "output_expert": [
-            "0 | Import : P to C chain",
+            "0 | Import : C from P chain",
             "1 | Amount : 4.26689679 FLR",
             "2 | Address [1/2] : 0x5a6a8c28a2fc040df3b7490440c50f00099c",
             "2 | Address [2/2] : 957a",
-            "3 | Fee : 0.00030321 FLR"
+            "3 | Fee : 0.00030321 FLR",
+            "4 | Hash [1/2] : 7eb6bdf75dccc487cca74adc1d5bf84b3d0edc",
+            "4 | Hash [2/2] : 51761c738cd02007490711c639",
         ]
     }
 ]
diff --git a/tests/ui_tests.cpp b/tests/ui_tests.cpp
index 514a326..8b92500 100644
--- a/tests/ui_tests.cpp
+++ b/tests/ui_tests.cpp
@@ -1,28 +1,29 @@
 /*******************************************************************************
-*   (c) 2018 - 2023 Zondax AG
-*
-*  Licensed under the Apache License, Version 2.0 (the "License");
-*  you may not use this file except in compliance with the License.
-*  You may obtain a copy of the License at
-*
-*      http://www.apache.org/licenses/LICENSE-2.0
-*
-*  Unless required by applicable law or agreed to in writing, software
-*  distributed under the License is distributed on an "AS IS" BASIS,
-*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-*  See the License for the specific language governing permissions and
-*  limitations under the License.
-********************************************************************************/
+ *   (c) 2018 - 2023 Zondax AG
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ ********************************************************************************/
 
-#include "gmock/gmock.h"
-
-#include <iostream>
-#include <fstream>
-#include <json/json.h>
 #include <hexutils.h>
+#include <json/json.h>
 #include <parser_txdef.h>
-#include "parser.h"
+
+#include <fstream>
+#include <iostream>
+
 #include "app_mode.h"
+#include "gmock/gmock.h"
+#include "parser.h"
 #include "utils/common.h"
 
 using ::testing::TestWithParam;
@@ -36,9 +37,9 @@ typedef struct {
 } testcase_t;
 
 class JsonTestsA : public ::testing::TestWithParam<testcase_t> {
-public:
+   public:
     struct PrintToStringParamName {
-        template<class ParamType>
+        template <class ParamType>
         std::string operator()(const testing::TestParamInfo<ParamType> &info) const {
             auto p = static_cast<testcase_t>(info.param);
             std::stringstream ss;
@@ -68,7 +69,6 @@ std::vector<testcase_t> GetJsonTestCases(std::string jsonFile) {
     std::cout << "Number of testcases: " << obj.size() << std::endl;
 
     for (int i = 0; i < obj.size(); i++) {
-
         auto outputs = std::vector<std::string>();
         for (auto s : obj[i]["output"]) {
             outputs.push_back(s.asString());
@@ -79,20 +79,14 @@ std::vector<testcase_t> GetJsonTestCases(std::string jsonFile) {
             outputs_expert.push_back(s.asString());
         }
 
-        answer.push_back(testcase_t{
-                obj[i]["index"].asUInt64(),
-                obj[i]["name"].asString(),
-                obj[i]["blob"].asString(),
-                outputs,
-                outputs_expert
-        });
+        answer.push_back(testcase_t{obj[i]["index"].asUInt64(), obj[i]["name"].asString(), obj[i]["blob"].asString(),
+                                    outputs, outputs_expert});
     }
 
     return answer;
 }
 
 void check_testcase(const testcase_t &tc, bool expert_mode) {
-
     app_mode_set_expert(expert_mode);
 
     parser_context_t ctx;
@@ -127,10 +121,7 @@ void check_testcase(const testcase_t &tc, bool expert_mode) {
 
 INSTANTIATE_TEST_SUITE_P
 
-(
-    JsonTestCasesCurrentTxVer,
-    JsonTestsA,
-    ::testing::ValuesIn(GetJsonTestCases("testcases.json")),
-    JsonTestsA::PrintToStringParamName()
-);
+    (JsonTestCasesCurrentTxVer, JsonTestsA, ::testing::ValuesIn(GetJsonTestCases("testcases.json")),
+     JsonTestsA::PrintToStringParamName());
 TEST_P(JsonTestsA, JsonTestsA_CheckUIOutput_CurrentTX_Normal) { check_testcase(GetParam(), false); }
+TEST_P(JsonTestsA, JsonTestsA_CheckUIOutput_CurrentTX_Expert) { check_testcase(GetParam(), true); }
diff --git a/tests_zemu/package.json b/tests_zemu/package.json
index 5c248c8..a8748eb 100644
--- a/tests_zemu/package.json
+++ b/tests_zemu/package.json
@@ -37,6 +37,7 @@
     "eslint-plugin-prettier": "^5.0.1",
     "jest": "29.7.0",
     "jssha": "^3.2.0",
+    "js-sha256": "0.9.0",
     "prettier": "^3.1.1",
     "secp256k1": "^5.0.0",
     "ts-jest": "^29.0.3",
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index 3837659..5a5a59d 100644
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diff --git a/tests_zemu/tests/transactions.test.ts b/tests_zemu/tests/transactions.test.ts
index 1498656..08c904d 100644
--- a/tests_zemu/tests/transactions.test.ts
+++ b/tests_zemu/tests/transactions.test.ts
@@ -19,6 +19,7 @@ import FlareApp from '@zondax/ledger-flare'
 import { models, hdpath, defaultOptions } from './common'
 import secp256k1 from 'secp256k1'
 import { createHash } from 'crypto'
+import { sha256 } from 'js-sha256'
 
 const TEST_DATA = [
   {
@@ -138,4 +139,77 @@ describe.each(models)('Transactions', function (m) {
       await sim.close()
     }
   })
+
+  test.concurrent.each(TEST_DATA)('Sign transaction expert', async function (data) {
+    const sim = new Zemu(m.path)
+    try {
+      await sim.start({ ...defaultOptions, model: m.name })
+      const app = new FlareApp(sim.getTransport())
+
+      //Change to expert mode so we can skip fields
+      await sim.toggleExpertMode()
+
+      const responseAddr = await app.getAddressAndPubKey(hdpath)
+      expect(responseAddr.returnCode).toEqual(0x9000)
+      console.log(responseAddr)
+
+      const pubKeyRaw = new Uint8Array(responseAddr.compressed_pk!)
+      const pubKey = secp256k1.publicKeyConvert(pubKeyRaw, true)
+
+      // do not wait here.. we need to navigate
+      const signatureRequest = app.sign(hdpath, data.blob)
+
+      // Wait until we are not in the main menu
+      await sim.waitUntilScreenIsNot(sim.getMainMenuSnapshot())
+      await sim.compareSnapshotsAndApprove('.', `${m.prefix.toLowerCase()}-sign-${data.name}-expert`)
+
+      const signatureResponse = await signatureRequest
+      console.log(signatureResponse)
+
+      expect(signatureResponse.returnCode).toEqual(0x9000)
+      expect(signatureResponse.errorMessage).toEqual('No errors')
+
+      // Now verify the signature
+      const message = createHash('sha256').update(data.blob).digest()
+      const signature = new Uint8Array(signatureResponse.signature!)
+      const valid = secp256k1.ecdsaVerify(secp256k1.signatureImport(signature), new Uint8Array(message), pubKey)
+      expect(valid).toEqual(true)
+    } finally {
+      await sim.close()
+    }
+  })
+
+  test.concurrent('sign hash', async function () {
+    const sim = new Zemu(m.path)
+    try {
+      await sim.start({ ...defaultOptions, model: m.name })
+      const app = new FlareApp(sim.getTransport())
+
+      const responseAddr = await app.getAddressAndPubKey(hdpath)
+      expect(responseAddr.returnCode).toEqual(0x9000)
+      console.log(responseAddr)
+
+      const pubKeyRaw = new Uint8Array(responseAddr.compressed_pk!)
+      const pubKey = secp256k1.publicKeyConvert(pubKeyRaw, true)
+
+      const text = 'FlareApp'
+      const msg = Buffer.from(sha256(text), 'hex')
+      const signatureRequest = app.signHash(hdpath, msg)
+
+      await sim.waitUntilScreenIsNot(sim.getMainMenuSnapshot())
+      await sim.compareSnapshotsAndApprove('.', `${m.prefix.toLowerCase()}-sign-hash`)
+
+      const signatureResponse = await signatureRequest
+      console.log(signatureResponse)
+      expect(signatureResponse.returnCode).toEqual(0x9000)
+      expect(signatureResponse.errorMessage).toEqual('No errors')
+
+      // Now verify the signature
+      const signature = new Uint8Array(signatureResponse.signature!)
+      const valid = secp256k1.ecdsaVerify(secp256k1.signatureImport(signature), msg, pubKey)
+      expect(valid).toEqual(true)
+    } finally {
+      await sim.close()
+    }
+  })
 })