diff --git a/dap_chain.c b/dap_chain.c
index 4bb2fb49fd42a7cd225d18e4b1b8a82d7db4be07..282a01fa4f834e983baf297dc85fc8b6125f8bdc 100644
--- a/dap_chain.c
+++ b/dap_chain.c
@@ -45,16 +45,17 @@ void dap_chain_deinit()
 
 /**
  * @brief dap_chain_open
- * @param a_file_name
+ * @param a_file_storage
+ * @param a_file_cache
  * @return
  */
-dap_chain_t * dap_chain_open(const char * a_file_cache,const char * a_file_storage )
+dap_chain_t * dap_chain_open(const char * a_file_storage,const char * a_file_cache)
 {
     dap_chain_t * l_chain = DAP_NEW_Z(dap_chain_t);
     DAP_CHAIN_INTERNAL_LOCAL_NEW(l_chain);
 
     l_chain_internal->file_storage_type = 0x0000; // TODO compressed format
-    l_chain_internal->file_storage  blockhain_file = fopen(a_file_name,"a+");
+    l_chain_internal->file_storage = fopen(a_file_storage,"a+");
 
     return l_chain;
 }
diff --git a/dap_chain.h b/dap_chain.h
index 3260fd79efc6ab54504438398a75a3d55d0fe45c..0f40cec69a69078600446169ccbbf16ff040bb24 100644
--- a/dap_chain.h
+++ b/dap_chain.h
@@ -1,6 +1,10 @@
 /*
- Copyright (c) 2017-2018 (c) Project "DeM Labs Inc" https://github.com/demlabsinc
-  All rights reserved.
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
 
  This file is part of DAP (Deus Applications Prototypes) the open source project
 
@@ -17,7 +21,6 @@
     You should have received a copy of the GNU General Public License
     along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
 */
-
 #pragma once
 #include "dap_chain_block.h"
 
@@ -33,7 +36,7 @@ typedef struct dap_chain{
 int dap_chain_init();
 void dap_chain_deinit();
 
-dap_chain_t * dap_chain_open(const char * a_file_name);
+dap_chain_t * dap_chain_open(const char * a_file_storage,const char * a_file_cache);
 void dap_chain_remap(dap_chain_t * a_chain, size_t a_offset);
 void dap_chain_save(dap_chain_t * a_chain);
 
diff --git a/dap_chain_block.c b/dap_chain_block.c
index cd160264b0a412fb1e8767c475d1582d3ff9f96c..bc4f0834b733ec6b3113478abf6ca18f5a81b44e 100644
--- a/dap_chain_block.c
+++ b/dap_chain_block.c
@@ -19,7 +19,6 @@
 */
 
 #include "dap_common.h"
-#include "dap_chain_section_roots.h"
 
 #include "dap_chain_block.h"
 
diff --git a/dap_chain_block.h b/dap_chain_block.h
index f257726a8d7b660497e85669dd412d2b748c68d8..4e9ee859dcf55ae3339ba9d02eaac721c5249be5 100644
--- a/dap_chain_block.h
+++ b/dap_chain_block.h
@@ -1,6 +1,10 @@
 /*
- Copyright (c) 2017-2018 (c) Project "DeM Labs Inc" https://github.com/demlabsinc
-  All rights reserved.
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
 
  This file is part of DAP (Deus Applications Prototypes) the open source project
 
@@ -34,7 +38,7 @@
  * @brief The dap_chain_block struct
  */
 typedef struct  dap_chain_block{
-    struct {
+     struct block_header{
         uint32_t signature; /// @param signature @brief Magic number, always equels to DAP_CHAIN_BLOCK_SIGNATURE
         int32_t version; /// @param version @brief block version (be carefull, signed value, as Bitcoin has)
         dap_chain_hash_t prev_block; /// @param prev_block Hash of the previous block
@@ -42,7 +46,7 @@ typedef struct  dap_chain_block{
         uint64_t difficulty; /// difficulty level
         uint64_t nonce; /// Nonce value to allow header variation for mining
         dap_chain_hash_t root_sections;/// @param root_main Main tree's root for all sections's hashes
-    } header;
+    } DAP_ALIGN_PACKED header;
     dap_chain_block_section_t section[];
 } DAP_ALIGN_PACKED dap_chain_block_t;
 
diff --git a/dap_chain_coin.h b/dap_chain_coin.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..8bf7f08772fbac06fe6539f3c2ba86e1479a6506 100644
--- a/dap_chain_coin.h
+++ b/dap_chain_coin.h
@@ -0,0 +1,24 @@
+/*
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
+
+ This file is part of DAP (Deus Applications Prototypes) the open source project
+
+    DAP (Deus Applicaions Prototypes) is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DAP is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#pragma once
diff --git a/dap_chain_common.h b/dap_chain_common.h
index df72b8e518937a62689fa62b53c4e83bfd42b1da..ec0a7b710b62fe4168265b4dfa03f4011ce24b0e 100644
--- a/dap_chain_common.h
+++ b/dap_chain_common.h
@@ -1,5 +1,28 @@
-#ifndef _DAP_CHAIN_COMMON_H_
-#define _DAP_CHAIN_COMMON_H_
+/*
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
+
+ This file is part of DAP (Deus Applications Prototypes) the open source project
+
+    DAP (Deus Applicaions Prototypes) is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DAP is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
 #include <stdint.h>
 
 #include "dap_common.h"
@@ -11,12 +34,13 @@ typedef union dap_chain_hash{
     uint8_t data[DAP_CHAIN_HASH_SIZE];
 } dap_chain_hash_t;
 
+
 typedef union dap_chain_sig_type{
-   uint16_t raw;
-   enum {
-     SIG_TYPE_NEWHOPE = 0x0000,
-     SIG_TYPE_MULTI = 0xffff ///  @brief Has inside subset of different signatures and sign composed with all of them
-   } type;
+    enum {
+        SIG_TYPE_NEWHOPE = 0x0000,
+        SIG_TYPE_MULTI = 0xffff ///  @brief Has inside subset of different signatures and sign composed with all of them
+
+    } type: 16;
+    uint16_t raw;
 } dap_chain_sig_type_t;
 
-#endif
diff --git a/dap_chain_internal.h b/dap_chain_internal.h
index 720e15bb85bd17210407e94c1c2f7d415c265bed..d5822356b1a67bdd680e0715ea8ccbccf1b899a5 100644
--- a/dap_chain_internal.h
+++ b/dap_chain_internal.h
@@ -1,6 +1,10 @@
 /*
- Copyright (c) 2017-2018 (c) Project "DeM Labs Inc" https://github.com/demlabsinc
-  All rights reserved.
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
 
  This file is part of DAP (Deus Applications Prototypes) the open source project
 
@@ -36,6 +40,8 @@ typedef struct dap_chain_file_header
 /**
   * @struct dap_chain_internal
   * @brief Internal blochain data, mostly aggregated
+  *
+  */
 typedef struct dap_chain_internal
 {
     FILE * file_cache_idx_blocks; /// @param file_cache @brief Index for blocks
@@ -45,8 +51,8 @@ typedef struct dap_chain_internal
     uint8_t file_storage_type; /// @param file_storage_type  @brief Is file_storage is raw, compressed or smth else
 } dap_chain_internal_t;
 
-#define DAP_CHAIN_INTERNAL(a) ((dap_chain_internal_t *) a->_inheritor  )
+#define DAP_CHAIN_INTERNAL(a) ((dap_chain_internal_t *) a->_internal  )
 
 #define DAP_CHAIN_INTERNAL_LOCAL(a) dap_chain_internal_t * l_chain_internal = DAP_CHAIN_INTERNAL(a)
 
-#define DAP_CHAIN_INTERNAL_LOCAL_NEW(a) dap_chain_internal_t * l_chain_internal = DAP_NEW_Z(dap_chain_internal_t); a->_inheritor = l_chain_internal
+#define DAP_CHAIN_INTERNAL_LOCAL_NEW(a) dap_chain_internal_t * l_chain_internal = DAP_NEW_Z(dap_chain_internal_t); a->_internal = l_chain_internal
diff --git a/dap_chain_section.h b/dap_chain_section.h
index 49e3fcff9aa8b39249428376dd352bf1cd0166d8..655c4a1053622390903f6f4a6f539a3fb3762aa2 100644
--- a/dap_chain_section.h
+++ b/dap_chain_section.h
@@ -1,6 +1,10 @@
 /*
- Copyright (c) 2017-2018 (c) Project "DeM Labs Inc" https://github.com/demlabsinc
-  All rights reserved.
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
 
  This file is part of DAP (Deus Applications Prototypes) the open source project
 
@@ -17,8 +21,6 @@
     You should have received a copy of the GNU General Public License
     along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
 */
-
-
 /**
   * @struct dap_chain_block_section
   * @brief section inside the block
@@ -48,7 +50,7 @@
 #define DAP_CHAIN_SECTION_EVM_CODE            0x0910
 
 /// Smart contract: EVM data section
-#define DAP_CHAIN_SECTION_EVM_CODE            0x0911
+#define DAP_CHAIN_SECTION_EVM_DATA            0x0911
 
 /// Pub key section, with sign and address
 #define DAP_CHAIN_SECTION_PKEY                0x0c00
@@ -67,4 +69,4 @@ typedef struct dap_chain_block_section{
     uint8_t data[]; // data
 } DAP_ALIGN_PACKED dap_chain_block_section_t;
 
-inline uint32_t
+
diff --git a/dap_chain_section_roots.h b/dap_chain_section_roots.h
index d0eb6320aa4c7f2cd20996a8f0cdf6e67d859f5a..491a069498880c1f2e5a0101438ce4defafc4d72 100644
--- a/dap_chain_section_roots.h
+++ b/dap_chain_section_roots.h
@@ -1,6 +1,10 @@
 /*
- Copyright (c) 2017-2018 (c) Project "DeM Labs Inc" https://github.com/demlabsinc
-  All rights reserved.
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
 
  This file is part of DAP (Deus Applications Prototypes) the open source project
 
diff --git a/dap_chain_section_tx.h b/dap_chain_section_tx.h
index 10bfc026f3d51546a0977a52ce2961ae889a03a0..9d52a97b98da94727c0e8848886fc08746e562ba 100644
--- a/dap_chain_section_tx.h
+++ b/dap_chain_section_tx.h
@@ -1,6 +1,10 @@
 /*
- Copyright (c) 2017-2018 (c) Project "DeM Labs Inc" https://github.com/demlabsinc
-  All rights reserved.
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
 
  This file is part of DAP (Deus Applications Prototypes) the open source project
 
diff --git a/dap_chain_section_tx_in.h b/dap_chain_section_tx_in.h
index c2484bacfed09e9c53dd7c70850d64474c12002a..66bbefb5fe605a732b6e30089f669e7a070d70e1 100644
--- a/dap_chain_section_tx_in.h
+++ b/dap_chain_section_tx_in.h
@@ -1,3 +1,26 @@
+/*
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
+
+ This file is part of DAP (Deus Applications Prototypes) the open source project
+
+    DAP (Deus Applicaions Prototypes) is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DAP is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
+*/
 #pragma once
 
 #include <stdint.h>
diff --git a/dap_chain_section_tx_out.h b/dap_chain_section_tx_out.h
index e014f19e4df7258111c936f4284632a31a152568..9c90d70a26281af017c39180eeaf047a9918d746 100644
--- a/dap_chain_section_tx_out.h
+++ b/dap_chain_section_tx_out.h
@@ -1,3 +1,26 @@
+/*
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
+
+ This file is part of DAP (Deus Applications Prototypes) the open source project
+
+    DAP (Deus Applicaions Prototypes) is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DAP is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
+*/
 #pragma once
 
 #include <stdint.h>
diff --git a/dap_chain_srv.h b/dap_chain_srv.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..a672942990f0be23844bfe82c8fbee1b3ce386ce 100644
--- a/dap_chain_srv.h
+++ b/dap_chain_srv.h
@@ -0,0 +1,23 @@
+/*
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
+
+ This file is part of DAP (Deus Applications Prototypes) the open source project
+
+    DAP (Deus Applicaions Prototypes) is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DAP is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
+*/
diff --git a/dap_chain_wallet.h b/dap_chain_wallet.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..a672942990f0be23844bfe82c8fbee1b3ce386ce 100644
--- a/dap_chain_wallet.h
+++ b/dap_chain_wallet.h
@@ -0,0 +1,23 @@
+/*
+ * Authors:
+ * Dmitriy A. Gearasimov <kahovski@gmail.com>
+ * DeM Labs Inc.   https://demlabs.net
+ * DeM Labs Open source community https://github.com/demlabsinc
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
+
+ This file is part of DAP (Deus Applications Prototypes) the open source project
+
+    DAP (Deus Applicaions Prototypes) is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DAP is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
+*/