diff --git a/.appveyor.yml b/.appveyor.yml
index 3552f017fd..161e73fee5 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017 Bitprim developers (see AUTHORS)
+# Copyright (c) 2017-2018 Bitprim Inc.
 #
 # This file is part of Bitprim.
 #
@@ -22,7 +22,9 @@ branches:
     - master
     - dev
     - /^v\d+\.\d+\.\d+$/
-    - feature_compile_time_currencies
+    - /^release-\d+\.\d+\.\d+$/
+    - /^feature-ci-.+$/
+    - /^feature_ci_.+$/
 
 build: false
 
@@ -32,21 +34,53 @@ environment:
     PYTHON_ARCH: "32"
 
     matrix:
-        - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-          CONAN_VISUAL_VERSIONS: 14
         - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
           CONAN_VISUAL_VERSIONS: 15
           VS150COMNTOOLS: "C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\Common7\\Tools\\"
 
-        # - MINGW_CONFIGURATIONS: "5.4@x86_64@seh@posix" #5.4@x86_64@sjlj@posix"
-        # - MINGW_CONFIGURATIONS: "7.2@x86_64@seh@posix" #7.2@x86_64@sjlj@posix"
-
-        - MINGW_CONFIGURATIONS: "7@x86_64@seh@posix, 6@x86_64@seh@posix, 5@x86_64@seh@posix, 4.9@x86_64@seh@posix"
+        - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+          CONAN_VISUAL_VERSIONS: 14
 
         # - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-        #   CONAN_VISUAL_VERSIONS: 12        
+        #   CONAN_VISUAL_VERSIONS: 12
+ 
+        # - MINGW_CONFIGURATIONS: "7@x86_64@seh@posix, 6@x86_64@seh@posix, 5@x86_64@seh@posix, 4.9@x86_64@seh@posix"
+
+        - MINGW_CONFIGURATIONS: "8@x86_64@seh@posix"
+        - MINGW_CONFIGURATIONS: "7@x86_64@seh@posix"
+        - MINGW_CONFIGURATIONS: "6@x86_64@seh@posix"
+        - MINGW_CONFIGURATIONS: "5@x86_64@seh@posix"
+        # - MINGW_CONFIGURATIONS: "4.9@x86_64@seh@posix"     
+
+
+init:
+  # - echo "*******************************************************"
+  # - echo %APPVEYOR_REPO_TAG%
+  # - echo %APPVEYOR_REPO_BRANCH%
+  # - echo %APPVEYOR_REPO_TAG_NAME%
+  # - echo %APPVEYOR_REPO_COMMIT_MESSAGE%
+  # - echo "*******************************************************"
+
+  - ps: |
+      if ($Env:APPVEYOR_REPO_BRANCH -ceq "master" -And [string]::IsNullOrEmpty($Env:APPVEYOR_REPO_TAG_NAME)) {
+        Write-Host "branch is master without tags, exiting"
+        Exit-AppveyorBuild
+      }
+
+      # Note(fernando): It is implemented natively in Appveyor...
+      # if ($Env:APPVEYOR_REPO_COMMIT_MESSAGE -like "*\[skip appveyor\]*") {
+      #   Write-Host "[skip appveyor] detected in commit message, exiting"
+      #   Exit-AppveyorBuild
+      # }
 
 install:
+  # - echo "*******************************************************"
+  # - echo %APPVEYOR_REPO_TAG%
+  # - echo %APPVEYOR_REPO_BRANCH%
+  # - echo %APPVEYOR_REPO_TAG_NAME%
+  # - echo %APPVEYOR_REPO_COMMIT_MESSAGE%
+  # - echo "*******************************************************"
+
   - set PATH=%PATH%;%PYTHON%/Scripts/
 
   - pip.exe install conan --upgrade
@@ -58,9 +92,41 @@ install:
   - conan user # It creates the conan data directory
 
 test_script:
+
+  - git submodule init
+  # - git submodule update --remote
+  - git submodule update
+  # - dir *.*
+
   # - git fetch --unshallow
   # - export BITPRIM_BUILD_NUMBER="$(git describe)"
   - for /f %%i in ('git describe') do set BITPRIM_BUILD_NUMBER=%%i
   - echo %BITPRIM_BUILD_NUMBER%
 
+  # - echo %APPVEYOR_REPO_BRANCH%
+  # - dir *.*
+  # - cd
+
+  - ps: |
+      if ($Env:APPVEYOR_REPO_BRANCH -ceq "dev") {
+        $Env:BITPRIM_CONAN_CHANNEL = "testing"
+      }
+      elseif ($Env:APPVEYOR_REPO_BRANCH.StartsWith("release")) {
+        $Env:BITPRIM_CONAN_CHANNEL = "stable"
+      }
+      elseif ($Env:APPVEYOR_REPO_BRANCH.StartsWith("feature")) {
+        $Env:BITPRIM_CONAN_CHANNEL = $Env:APPVEYOR_REPO_BRANCH
+      }
+      else {
+        $Env:BITPRIM_CONAN_CHANNEL = "stable"
+      }
+      
+      # if ([System.IO.File]::Exists("conan_channel")) {
+      #   Write-Host "Creating conan_channel file"
+      #   $Env:BITPRIM_CONAN_CHANNEL | Out-File conan_channel
+      # }
+
+  # - dir *.*
+  # - echo %BITPRIM_CONAN_CHANNEL%
+
   - python build.py
diff --git a/.gitignore b/.gitignore
index 7a94b7a1b4..bc981ab360 100644
--- a/.gitignore
+++ b/.gitignore
@@ -58,4 +58,6 @@ CMakeSettings.json
 /.vs/ProjectSettings.json
 /.vs/slnx.sqlite
 
-.vscode/
\ No newline at end of file
+.vscode/
+
+get_branch.py
\ No newline at end of file
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000..f805158603
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "ci_utils"]
+	path = ci_utils
+	url = https://github.com/bitprim/bitprim-ci-utils.git
diff --git a/.travis.yml b/.travis.yml
index 8db9da3cff..d740e1ae43 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017 Bitprim developers (see AUTHORS)
+# Copyright (c) 2017-2018 Bitprim Inc.
 #
 # This file is part of Bitprim.
 #
@@ -19,11 +19,12 @@
 
 branches:
   only:
-  - master
+  # - master
   - dev
   - /^v\d+\.\d+\.\d+$/
-  - feature_compile_time_currencies
-  
+  - /^release-\d+\.\d+\.\d+$/
+  - /^feature-ci-.+$/
+  - /^feature_ci_.+$/
 
 linux: &linux
    os: linux
@@ -39,50 +40,67 @@ osx: &osx
 
 matrix:
    include:
-      - <<: *linux
-        env: PUSH_TO_REPOS=true
+      # - <<: *linux
+      #   env: PUSH_TO_REPOS=true
    
+      # Linux, GCC, libstdc++ ------------------------------------------------------
       - <<: *linux
-        env: CONAN_GCC_VERSIONS=4.9 CONAN_DOCKER_IMAGE=lasote/conangcc49
+        env: CONAN_GCC_VERSIONS=8 CONAN_DOCKER_IMAGE=lasote/conangcc8
+             BITPRIM_RUN_TESTS=true
 
       - <<: *linux
-        env: CONAN_GCC_VERSIONS=5 CONAN_DOCKER_IMAGE=lasote/conangcc5
+        env: CONAN_GCC_VERSIONS=7 CONAN_DOCKER_IMAGE=lasote/conangcc7
 
       - <<: *linux
-        env: CONAN_GCC_VERSIONS=6 CONAN_DOCKER_IMAGE=lasote/conangcc63
+        env: CONAN_GCC_VERSIONS=6 CONAN_DOCKER_IMAGE=lasote/conangcc6
 
       - <<: *linux
-        env: CONAN_GCC_VERSIONS=7 CONAN_DOCKER_IMAGE=lasote/conangcc7
-             BITPRIM_RUN_TESTS=true
+        env: CONAN_GCC_VERSIONS=5 CONAN_DOCKER_IMAGE=lasote/conangcc5
 
-      - <<: *linux
-        env: CONAN_CLANG_VERSIONS=3.9 CONAN_DOCKER_IMAGE=lasote/conanclang39
+      # - <<: *linux
+      #   env: CONAN_GCC_VERSIONS=4.9 CONAN_DOCKER_IMAGE=lasote/conangcc49
 
+      # Linux, Clang, libstdc++ ----------------------------------------------------
       - <<: *linux
-        env: CONAN_CLANG_VERSIONS=4.0 CONAN_DOCKER_IMAGE=lasote/conanclang40
+        env: CONAN_CLANG_VERSIONS=6.0 CONAN_DOCKER_IMAGE=lasote/conanclang60
 
       - <<: *linux
         env: CONAN_CLANG_VERSIONS=5.0 CONAN_DOCKER_IMAGE=lasote/conanclang50
 
-      - <<: *osx
-        osx_image: xcode7.3
-        env: CONAN_APPLE_CLANG_VERSIONS=7.3
+      - <<: *linux
+        env: CONAN_CLANG_VERSIONS=4.0 CONAN_DOCKER_IMAGE=lasote/conanclang40
+
+      # - <<: *linux
+      #   env: CONAN_CLANG_VERSIONS=3.9 CONAN_DOCKER_IMAGE=lasote/conanclang39
+
+      # macOS, apple-Clang, libc++ -------------------------------------------------
+        - <<: *osx
+        osx_image: xcode9
+        env: CONAN_APPLE_CLANG_VERSIONS=9.0
+             BITPRIM_RUN_TESTS=true
+
       - <<: *osx
         osx_image: xcode8.3
         env: CONAN_APPLE_CLANG_VERSIONS=8.1
+
       - <<: *osx
-        osx_image: xcode9
-        env: CONAN_APPLE_CLANG_VERSIONS=9.0
-             BITPRIM_RUN_TESTS=true
+        osx_image: xcode7.3
+        env: CONAN_APPLE_CLANG_VERSIONS=7.3
         
+before_install:
+  - |
+    if [[ "${TRAVIS_COMMIT_MESSAGE}" = *"[skip travis]"* ]]; then
+      echo "[skip travis] detected in commit message, exiting"
+      travis_terminate 0
+    fi
 
 install:
   - cd ${TRAVIS_BUILD_DIR}
 
   - |
     if [[ "${PUSH_TO_REPOS}" != "true" ]]; then
-      chmod +x .travis/install.sh
-      ./.travis/install.sh
+      chmod +x ci_utils/.travis/install.sh
+      ./ci_utils/.travis/install.sh
     fi    
 
 script:
@@ -90,14 +108,40 @@ script:
   - export BITPRIM_BUILD_NUMBER="$(git describe)"
   - echo "${BITPRIM_BUILD_NUMBER}"
 
+  - |
+    echo "${TRAVIS_BRANCH}"
+    if [[ "${TRAVIS_BRANCH}" = "dev" ]]; then
+      export BITPRIM_CONAN_CHANNEL="testing"
+    elif  [[ "${TRAVIS_BRANCH}" = "release"* ]]; then
+      export BITPRIM_CONAN_CHANNEL="stable"
+    elif  [[ "${TRAVIS_BRANCH}" = "feature"* ]]; then
+      export BITPRIM_CONAN_CHANNEL="${TRAVIS_BRANCH}"
+    else
+      export BITPRIM_CONAN_CHANNEL="stable"
+    fi
+    echo "${BITPRIM_CONAN_CHANNEL}"
+
+    # pwd
+    # ls -ltra
+
+    # if [ -e conan_channel ] then
+    #   echo "Creating conan_channel file"
+    #   printf "${BITPRIM_CONAN_CHANNEL}" > conan_channel
+    # fi
+
+    # ls -ltra
+
+
+
+
   - |
     if [[ "${PUSH_TO_REPOS}" == "true" ]]; then
       chmod +x .travis/push_other_repo.sh
       ./.travis/push_other_repo.sh
     else
       cd ${TRAVIS_BUILD_DIR}
-      chmod +x .travis/run.sh
-      ./.travis/run.sh
+      chmod +x ci_utils/.travis/run.sh
+      ./ci_utils/.travis/run.sh
     fi  
 
 notifications:
diff --git a/.travis/install.sh b/.travis/install.sh
deleted file mode 100644
index a1546004a2..0000000000
--- a/.travis/install.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/bin/bash
-
-set -e
-set -x
-
-if [[ "$(uname -s)" == 'Darwin' ]]; then
-    brew update || brew update
-    brew outdated pyenv || brew upgrade pyenv
-    brew install pyenv-virtualenv
-    brew install cmake || true
-
-    if which pyenv > /dev/null; then
-        eval "$(pyenv init -)"
-    fi
-
-    pyenv install 2.7.10
-    pyenv virtualenv 2.7.10 conan
-    pyenv rehash
-    pyenv activate conan
-fi
-
-pip install conan --upgrade
-# pip install conan==1.0.0b5   #Fixed Beta version...
-
-pip install conan_package_tools
-pip install cpuid --upgrade
-
-conan user
diff --git a/.travis/run.sh b/.travis/run.sh
deleted file mode 100644
index 0a3488ee07..0000000000
--- a/.travis/run.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -e
-set -x
-
-if [[ "$(uname -s)" == 'Darwin' ]]; then
-    if which pyenv > /dev/null; then
-        eval "$(pyenv init -)"
-    fi
-    pyenv activate conan
-fi
-
-python build.py
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d1344e5809..6f964ef706 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -91,15 +91,14 @@ message( STATUS "Bitprim: Compiling for ${MICROARCHITECTURE}")
 # endif()
 
 
-if(EXISTS ${CMAKE_SOURCE_DIR}/bitprimbuildinfo.cmake)
-    include(${CMAKE_SOURCE_DIR}/bitprimbuildinfo.cmake)
+if(EXISTS ${CMAKE_SOURCE_DIR}/ci_utils/cmake/bitprimbuildinfo.cmake)
+    include(${CMAKE_SOURCE_DIR}/ci_utils/cmake/bitprimbuildinfo.cmake)
 else()
     message( STATUS "bitprimbuildinfo doent exists")
 endif()
 
-
-
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/ci_utils/cmake)
 
 include(Secp256k1Tools)
 
diff --git a/conan_channel b/_conan_channel
similarity index 100%
rename from conan_channel
rename to _conan_channel
diff --git a/bitprimbuildinfo.cmake b/bitprimbuildinfo.cmake
deleted file mode 100644
index 37a33d6db4..0000000000
--- a/bitprimbuildinfo.cmake
+++ /dev/null
@@ -1,42 +0,0 @@
-# include(CMakeParseArguments)
-
-# message( STATUS "--------------------------------------------"  )
-# get_directory_property( DirDefs DIRECTORY ${CMAKE_SOURCE_DIR} COMPILE_DEFINITIONS )
-# foreach( d ${DirDefs} )
-#     message( STATUS "Found Define: " ${d} )
-# endforeach()
-# message( STATUS "DirDefs: " ${DirDefs} )
-# message( STATUS "--------------------------------------------"  )
-
-# message( STATUS "2 NO_CONAN_AT_ALL: " ${NO_CONAN_AT_ALL} )
-# message( STATUS "CMAKE_CXX_COMPILER_ID: " ${CMAKE_CXX_COMPILER_ID} )
-# message( STATUS "NOT_USE_CPP11_ABI: " ${NOT_USE_CPP11_ABI} )
-# message( STATUS "CONAN_CXX_FLAGS: " ${CONAN_CXX_FLAGS} )
-# message( STATUS "CMAKE_CXX_FLAGS: " ${CMAKE_CXX_FLAGS} )
-
-
-if (NOT NO_CONAN_AT_ALL)
-    if(EXISTS ${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-        include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-        conan_basic_setup()
-
-        remove_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
-        remove_definitions(-D_GLIBCXX_USE_CXX11_ABI=1)
-
-        if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-            if (NOT NOT_USE_CPP11_ABI)
-                add_definitions(-D_GLIBCXX_USE_CXX11_ABI=1)
-                message( STATUS "Bitprim: Using _GLIBCXX_USE_CXX11_ABI=1")
-            else()
-                add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
-                message( STATUS "Bitprim: Using _GLIBCXX_USE_CXX11_ABI=0")
-            endif()
-        endif()
-    else()
-        message(WARNING "The file conanbuildinfo.cmake doesn't exist, you have to run conan install first")
-    endif()
-endif()
-
-# message( STATUS "CONAN_CXX_FLAGS: " ${CONAN_CXX_FLAGS} )
-# message( STATUS "CMAKE_CXX_FLAGS: " ${CMAKE_CXX_FLAGS} )
-
diff --git a/build.py b/build.py
index 7a4f7d86e5..a5da398d0f 100644
--- a/build.py
+++ b/build.py
@@ -1,112 +1,18 @@
-from conan.packager import ConanMultiPackager
+# from conan.packager import ConanMultiPackager
+# import copy
+# import re
+# import platform
 import os
-import copy
-import re
-import platform
 import cpuid
-
-def get_content(path):
-    with open(path, 'r') as f:
-        return f.read()
-
-def get_version():
-    return get_content('conan_version')
-
-def get_channel():
-    return get_content('conan_channel')
-
-def get_conan_vars():
-    login_username = os.getenv("CONAN_LOGIN_USERNAME", "bitprim-bintray")
-    username = os.getenv("CONAN_USERNAME", "bitprim")
-    channel = os.getenv("CONAN_CHANNEL", get_channel())
-    version = os.getenv("CONAN_VERSION", get_version())
-    return login_username, username, channel, version
-
-def get_value_from_recipe(search_string, recipe="conanfile.py"):
-    with open(recipe, "r") as conanfile:
-        contents = conanfile.read()
-        result = re.search(search_string, contents)
-    return result
-
-def get_name_from_recipe():
-    return get_value_from_recipe(r'''name\s*=\s*["'](\S*)["']''').groups()[0]
-
-def get_user_repository(username, repository_name):
-    # https://api.bintray.com/conan/bitprim/bitprim
-    return "https://api.bintray.com/conan/{0}/{1}".format(username.lower(), repository_name)
-
-def get_conan_upload(username):
-    repository_name = os.getenv("BIPRIM_BINTRAY_REPOSITORY", "bitprim")
-    return os.getenv("CONAN_UPLOAD", get_user_repository(username, repository_name))
-
-def get_conan_remotes(username):
-    # While redundant, this moves upload remote to position 0.
-    remotes = [get_conan_upload(username)]
-
-    # # Add bincrafters repository for other users, e.g. if the package would
-    # # require other packages from the bincrafters repo.
-    # bincrafters_user = "bincrafters"
-    # if username != bincrafters_user:
-    #     remotes.append(get_conan_upload(bincrafters_user))
-    return remotes
-
-def get_os():
-    return platform.system().replace("Darwin", "Macos")
-
-def get_archs():
-    return ["x86_64"]
-    # archs = os.getenv("CONAN_ARCHS", None)
-    # if get_os() == "Macos" and archs is None:
-    #     return ["x86_64"]
-    # return split_colon_env("CONAN_ARCHS") if archs else None
-
-
-def get_builder(args=None):
-    name = get_name_from_recipe()
-    login_username, username, channel, version = get_conan_vars()
-    reference = "{0}/{1}".format(name, version)
-    upload = get_conan_upload(username)
-    remotes = os.getenv("CONAN_REMOTES", get_conan_remotes(username))
-
-    # upload_when_stable = get_upload_when_stable()
-    # stable_branch_pattern = os.getenv("CONAN_STABLE_BRANCH_PATTERN", "stable/*")
-
-    archs = get_archs()
-    builder = ConanMultiPackager(
-        args=args,
-        username=username,
-        login_username=login_username,
-        channel=channel,
-        reference=reference,
-        upload=upload,
-        remotes=remotes,
-        archs=archs,
-        # upload_only_when_stable=upload_when_stable,
-        # stable_branch_pattern=stable_branch_pattern
-        )
-
-    return builder, name
-
-def handle_microarchs(opt_name, microarchs, filtered_builds, settings, options, env_vars, build_requires):
-    microarchs = list(set(microarchs))
-
-    for ma in microarchs:
-        opts_copy = copy.deepcopy(options)
-        opts_copy[opt_name] = ma
-        filtered_builds.append([settings, opts_copy, env_vars, build_requires])
-
+from ci_utils.utils import get_builder, handle_microarchs
 
 if __name__ == "__main__":
     builder, name = get_builder()
     builder.add_common_builds(shared_option_name="%s:shared" % name, pure_c=True)
 
-
     filtered_builds = []
-    for settings, options, env_vars, build_requires in builder.builds:
-
-        # print(settings)
-        # print(options)
-
+    # for settings, options, env_vars, build_requires in builder.builds:
+    for settings, options, env_vars, build_requires, reference in builder.items:
 
         if settings["build_type"] == "Release" \
                 and not("%s:shared"  % name in options and options["%s:shared" % name]):
@@ -120,7 +26,6 @@ def handle_microarchs(opt_name, microarchs, filtered_builds, settings, options,
 
             marchs = ["x86_64", ''.join(cpuid.cpu_microarchitecture()), "haswell", "skylake", "skylake-avx512"]
             handle_microarchs("%s:microarchitecture" % name, marchs, filtered_builds, settings, options, env_vars, build_requires)
-  
             # filtered_builds.append([settings, options, env_vars, build_requires])
 
     builder.builds = filtered_builds
diff --git a/ci_utils b/ci_utils
new file mode 160000
index 0000000000..1341c8a436
--- /dev/null
+++ b/ci_utils
@@ -0,0 +1 @@
+Subproject commit 1341c8a436bb090ef08020f9691217a58e8b33dc
diff --git a/cmake/BitprimTools.cmake b/cmake/BitprimTools.cmake
deleted file mode 100644
index f7d5e8269c..0000000000
--- a/cmake/BitprimTools.cmake
+++ /dev/null
@@ -1,128 +0,0 @@
-#
-# Copyright (c) 2017 Bitprim developers (see AUTHORS)
-#
-# This file is part of Bitprim.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program 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 Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-
-macro(_replace_release_flag search replace_with)
-    string(REPLACE "${search}" "${replace_with}" CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
-    string(REPLACE "${search}" "${replace_with}" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
-endmacro()
-
-function(_add_c_compile_flag _Flag _Var)
-    check_cxx_compiler_flag(${_Flag} ${_Var})
-    if (${_Var})
-        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_Flag}" )
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_Flag}" )
-    endif()
-endfunction()
-
-function(_add_cxx_compile_flag _Flag _Var)
-    check_cxx_compiler_flag(${_Flag} ${_Var})
-    if (${_Var})
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_Flag}" )
-    endif()
-endfunction()
-
-function(_add_link_flag _Flag _Var)
-    check_cxx_compiler_flag(${_Flag} ${_Var})
-    if (${_Var})
-        set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${_Flag}" )
-        set(CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} ${_Flag}" )
-    endif()
-endfunction()
-
-
-function(_check_has_decl header header_result symbol symbol_result)
-    check_include_file(${header} ${header_result})
-    if (${header_result})
-        add_definitions(-D${header_result})
-        check_cxx_symbol_exists(${symbol} ${header} ${symbol_result})
-        if (${symbol_result})
-            add_definitions(-D${symbol_result}=1)
-        else()
-            add_definitions(-D${symbol_result}=0)
-        endif()
-    endif()
-endfunction()
-
-
-
-# Build
-#==============================================================================
-function(_group_sources target sources_dir)
-    file(GLOB_RECURSE _headers
-            ${sources_dir}/include/*.h ${sources_dir}/include/*.hpp)
-    target_sources(${target} PRIVATE ${_headers})
-
-    get_target_property(sources ${target} SOURCES)
-    foreach (source ${sources})
-        get_filename_component(group ${source} ABSOLUTE)
-        get_filename_component(group ${group} DIRECTORY)
-        file(RELATIVE_PATH group "${sources_dir}" "${group}")
-        if (group)
-            if (MSVC)
-                string(REPLACE "/" "\\" group "${group}")
-            endif()
-            source_group("${group}" FILES "${source}")
-        endif()
-    endforeach()
-
-    set_target_properties(${target} PROPERTIES FOLDER "core")
-endfunction()
-
-
-
-
-# Tests
-#==============================================================================
-function(_add_tests target)
-    if (ENABLE_SHARED)
-        target_compile_definitions(${target} PRIVATE -DBOOST_TEST_DYN_LINK)
-    endif()
-    target_include_directories(${target} SYSTEM PUBLIC ${Boost_INCLUDE_DIR})
-    target_link_libraries(${target} PUBLIC ${Boost_UNIT_TEST_FRAMEWORK_LIBRARY})
-
-    foreach (_test_name ${ARGN})
-        add_test(
-                NAME test.core.${_test_name}
-                COMMAND ${target}
-                --run_test=${_test_name}
-                --show_progress=no
-                --detect_memory_leak=0
-                --report_level=no
-                --build_info=yes)
-    endforeach()
-endfunction()
-
-
-
-# macro(remove_cxx_flag flag)
-#     string(REPLACE "${flag}" "" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
-# endmacro()
-
-# macro(remove_cxx_flag flag)
-#   string(REPLACE "${flag}" "" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
-# endmacro()
-
-# macro(remove_cxx_flag flag)
-#   string(REPLACE "${flag}" "" CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
-# endmacro()
-
-# set(CMAKE_C_FLAGS_RELEASE "-O3 ${CMAKE_C_FLAGS_RELEASE}" )
-# message("CMAKE_C_FLAGS_RELEASE is ${CMAKE_C_FLAGS_RELEASE}")
-# remove_cxx_flag("-O2")
-# message("CMAKE_C_FLAGS_RELEASE is ${CMAKE_C_FLAGS_RELEASE}")
diff --git a/cmake/FindGMP.cmake b/cmake/FindGMP.cmake
deleted file mode 100644
index d99763c08c..0000000000
--- a/cmake/FindGMP.cmake
+++ /dev/null
@@ -1,24 +0,0 @@
-# Try to find the GMP librairies
-#  GMP_FOUND - system has GMP lib
-#  GMP_INCLUDE_DIR - the GMP include directory
-#  GMP_LIBRARIES - Libraries needed to use GMP
-
-# Copyright (c) 2006, Laurent Montel, <montel@kde.org>
-#
-# Redistribution and use is allowed according to the terms of the BSD license.
-# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
-
-if (GMP_INCLUDE_DIR AND GMP_LIBRARIES)
-  # Already in cache, be silent
-  set(GMP_FIND_QUIETLY TRUE)
-endif (GMP_INCLUDE_DIR AND GMP_LIBRARIES)
-
-find_path(GMP_INCLUDE_DIR NAMES gmp.h )
-find_library(GMP_LIBRARIES NAMES gmp libgmp )
-find_library(GMPXX_LIBRARIES NAMES gmpxx libgmpxx )
-MESSAGE(STATUS "GMP libs: " ${GMP_LIBRARIES} " " ${GMPXX_LIBRARIES} )
-
-include(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(GMP DEFAULT_MSG GMP_INCLUDE_DIR GMP_LIBRARIES)
-
-mark_as_advanced(GMP_INCLUDE_DIR GMP_LIBRARIES)
diff --git a/cmake/Secp256k1Tools.cmake b/cmake/Secp256k1Tools.cmake
index e78e24e793..46848245ed 100644
--- a/cmake/Secp256k1Tools.cmake
+++ b/cmake/Secp256k1Tools.cmake
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017 Bitprim developers (see AUTHORS)
+# Copyright (c) 2017-2018 Bitprim Inc.
 #
 # This file is part of Bitprim.
 #
diff --git a/conan_req_version b/conan_req_version
index b123147e2a..03e5161d2c 100644
--- a/conan_req_version
+++ b/conan_req_version
@@ -1 +1 @@
-1.1
\ No newline at end of file
+1.4.5
\ No newline at end of file
diff --git a/conan_user b/conan_user
new file mode 100644
index 0000000000..0f7da7ab6d
--- /dev/null
+++ b/conan_user
@@ -0,0 +1 @@
+bitprim
\ No newline at end of file
diff --git a/conanfile.py b/conanfile.py
index b2f5da657c..44cdad6d15 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017 Bitprim developers (see AUTHORS)
+# Copyright (c) 2017-2018 Bitprim Inc.
 #
 # This file is part of Bitprim.
 #
@@ -21,47 +21,7 @@
 from conans import ConanFile, CMake
 from conans import __version__ as conan_version
 from conans.model.version import Version
-import importlib
-
-def option_on_off(option):
-    return "ON" if option else "OFF"
-    
-def get_content(file_name):
-    file_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), file_name)
-    with open(file_path, 'r') as f:
-        return f.read()
-
-def get_version():
-    return get_content('conan_version')
-
-def get_channel():
-    return get_content('conan_channel')
-
-def get_conan_req_version():
-    return get_content('conan_req_version')
-
-microarchitecture_default = 'x86_64'
-
-def get_cpuid():
-    try:
-        # print("*** cpuid OK")
-        cpuid = importlib.import_module('cpuid')
-        return cpuid
-    except ImportError:
-        # print("*** cpuid could not be imported")
-        return None
-
-def get_cpu_microarchitecture_or_default(default):
-    cpuid = get_cpuid()
-    if cpuid != None:
-        # return '%s%s' % cpuid.cpu_microarchitecture()
-        return '%s' % (''.join(cpuid.cpu_microarchitecture()))
-    else:
-        return default
-
-def get_cpu_microarchitecture():
-    return get_cpu_microarchitecture_or_default(microarchitecture_default)
-
+from ci_utils.utils import option_on_off, get_version, get_conan_req_version, get_cpu_microarchitecture, get_cpuid
 
 class Secp256k1Conan(ConanFile):
     name = "secp256k1"
@@ -70,7 +30,6 @@ class Secp256k1Conan(ConanFile):
     url = "https://github.com/bitprim/secp256k1"
     description = "Optimized C library for EC operations on curve secp256k1"
     settings = "os", "compiler", "build_type", "arch"
-    # settings = "os", "compiler", "build_type", "arch", "os_build", "arch_build"
 
     if Version(conan_version) < Version(get_conan_req_version()):
         raise Exception ("Conan version should be greater or equal than %s. Detected: %s." % (get_conan_req_version(), conan_version))
@@ -129,18 +88,15 @@ class Secp256k1Conan(ConanFile):
     generators = "cmake"
     build_policy = "missing"
 
-    exports = "conan_channel", "conan_version", "conan_req_version"
-    exports_sources = "src/*", "include/*", "CMakeLists.txt", "cmake/*", "secp256k1Config.cmake.in", "bitprimbuildinfo.cmake", "contrib/*", "test/*"
-
+    exports = "conan_version", "conan_req_version", "conan_user", "ci_utils/*"      #"conan_channel"
+    exports_sources = "src/*", "include/*", "CMakeLists.txt", "cmake/*", "secp256k1Config.cmake.in", "contrib/*", "test/*"
+    #, "bitprimbuildinfo.cmake"
 
     # with_benchmark = False
     # with_tests = True
     # with_openssl_tests = False
 
 
-
-
-
     # https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html
     # echo "" | gcc -fsyntax-only -march=pepe -xc -
     # nocona core2 nehalem corei7 westmere sandybridge corei7-avx ivybridge core-avx-i haswell core-avx2 broadwell skylake skylake-avx512 bonnell atom silvermont slm knl x86-64 eden-x2 nano nano-1000 nano-2000 nano-3000 nano-x2 eden-x4 nano-x4 k8 k8-sse3 opteron opteron-sse3 athlon64 athlon64-sse3 athlon-fx amdfam10 barcelona bdver1 bdver2 bdver3 bdver4 znver1 btver1 btver2
@@ -273,6 +229,9 @@ def bignum_lib_name(self):
         
 
     def requirements(self):
+        self.output.info("********************* self.channel: %s" % (self.channel,))
+        # self.requires("Say/0.1@%s/%s" % (self.user, self.channel))
+
         if self.options.with_bignum_lib:
             if self.settings.os == "Windows":
                 self.requires("mpir/3.0.0@bitprim/stable")