diff --git a/modules/blockchain/CMakeLists.txt b/modules/blockchain/CMakeLists.txt
index 40400ff7..b82278f6 100644
--- a/modules/blockchain/CMakeLists.txt
+++ b/modules/blockchain/CMakeLists.txt
@@ -4,35 +4,38 @@ target_include_directories(antara_nspv PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_link_libraries(antara_nspv PUBLIC antara::default_settings antara::ecs reproc++)
 add_library(antara::nspv ALIAS antara_nspv)
 
-if (ANTARA_BUILD_UNIT_TESTS)
-    ##! antara blockchain tests
-    add_executable(antara_blockchain_tests)
-    target_link_libraries(antara_blockchain_tests PRIVATE doctest PUBLIC antara::nspv)
-    target_sources(antara_blockchain_tests PRIVATE
-            antara/gaming/blockchain/antara.blockchain.tests.cpp
-            antara/gaming/blockchain/nspv.system.tests.cpp)
-    set_target_properties(antara_blockchain_tests
-            PROPERTIES
-            RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/unit_tests"
-            )
+if (ANTARA_WIP_FEATURES)
+    if (ANTARA_BUILD_UNIT_TESTS)
+        ##! antara blockchain tests
+        add_executable(antara_blockchain_tests)
 
-    file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/assets DESTINATION ${CMAKE_BINARY_DIR}/bin/unit_tests/nspv/)
+        target_link_libraries(antara_blockchain_tests PRIVATE doctest PUBLIC antara::nspv)
+        target_sources(antara_blockchain_tests PRIVATE
+                antara/gaming/blockchain/antara.blockchain.tests.cpp
+                antara/gaming/blockchain/nspv.system.tests.cpp)
+        set_target_properties(antara_blockchain_tests
+                PROPERTIES
+                RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/unit_tests"
+                )
 
+        file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/assets DESTINATION ${CMAKE_BINARY_DIR}/bin/unit_tests/nspv/)
 
-    target_enable_coverage(antara_blockchain_tests)
-    target_enable_tsan(antara_blockchain_tests)
-    target_enable_asan(antara_blockchain_tests)
-    target_enable_ubsan(antara_blockchain_tests)
 
-    if (EMSCRIPTEN)
-        message(STATUS "Emscripten detected")
-        if (ENABLE_HTML_COMPILATION)
-            message(STATUS "Html compilation enabled")
-            set_target_properties(antara_blockchain_tests PROPERTIES LINK_FLAGS "-s FORCE_FILESYSTEM=1 -s EXIT_RUNTIME=1"
-                    SUFFIX ".html")
-        else ()
-            message(STATUS "Local js compilation")
-            set_target_properties(antara_blockchain_tests PROPERTIES LINK_FLAGS "-s FORCE_FILESYSTEM=1 -s NODERAWFS=1 -s EXIT_RUNTIME=1")
+        target_enable_coverage(antara_blockchain_tests)
+        target_enable_tsan(antara_blockchain_tests)
+        target_enable_asan(antara_blockchain_tests)
+        target_enable_ubsan(antara_blockchain_tests)
+
+        if (EMSCRIPTEN)
+            message(STATUS "Emscripten detected")
+            if (ENABLE_HTML_COMPILATION)
+                message(STATUS "Html compilation enabled")
+                set_target_properties(antara_blockchain_tests PROPERTIES LINK_FLAGS "-s FORCE_FILESYSTEM=1 -s EXIT_RUNTIME=1"
+                        SUFFIX ".html")
+            else ()
+                message(STATUS "Local js compilation")
+                set_target_properties(antara_blockchain_tests PROPERTIES LINK_FLAGS "-s FORCE_FILESYSTEM=1 -s NODERAWFS=1 -s EXIT_RUNTIME=1")
+            endif ()
         endif ()
     endif ()
 endif ()
\ No newline at end of file
diff --git a/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp b/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp
index 4b27e1e8..ffbfad37 100644
--- a/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp
+++ b/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp
@@ -18,24 +18,7 @@
 #include <future>
 #include <mutex>
 #include <antara/gaming/blockchain/nspv.system.hpp>
-#include <antara/gaming/event/fatal.error.hpp>
-
-class thread_safe_string_sink {
-public:
-    thread_safe_string_sink(std::string &out, std::mutex &mutex)
-            : out_(out), mutex_(mutex) {}
-
-    bool operator()(const uint8_t *buffer, unsigned int size) {
-        std::lock_guard<std::mutex> lock(mutex_);
-        out_.append(reinterpret_cast<const char *>(buffer), size);
-        return true;
-    }
-
-private:
-    std::string &out_;
-    std::mutex &mutex_;
-};
-
+#include <reproc++/sink.hpp>
 
 namespace antara::gaming::blockchain {
     nspv::nspv(entt::registry &registry, fs::path tools_path) noexcept :
@@ -45,16 +28,16 @@ namespace antara::gaming::blockchain {
     }
 
     void nspv::update() noexcept {
-        for (auto &&[coin, _] : registry_) {
-            std::lock_guard<std::mutex> lock(output_registry_.at(coin).output_mutex);
-            DVLOG_F(loguru::Verbosity_INFO, "nspv process output: \n{}", output_registry_.at(coin).output);
-            output_registry_.at(coin).output.clear();
+        for (auto &&[coin, background] : registry_) {
+            std::stringstream ss;
+            background.drain(reproc::stream::out, reproc::sink::ostream(ss));
+            DVLOG_F(loguru::Verbosity_INFO, "nspv output: {}", ss.str());
         }
     }
 
     nspv::~nspv() noexcept {
         LOG_SCOPE_FUNCTION(INFO);
-        for (auto &&[_, background] : registry_) {
+        for (auto &&[coin, background] : registry_) {
             auto ec = background.stop(reproc::cleanup::terminate, reproc::milliseconds(2000), reproc::cleanup::kill,
                                       reproc::infinite);
             if (ec) {
@@ -65,33 +48,14 @@ namespace antara::gaming::blockchain {
 
     bool nspv::spawn_nspv_instance(const std::string &coin) noexcept {
         LOG_SCOPE_FUNCTION(INFO);
-        auto it = registry_.emplace(coin, reproc::process{reproc::cleanup::terminate,
-                                                          reproc::milliseconds(2000),
-                                                          reproc::cleanup::kill,
-                                                          reproc::infinite}).first;
-        reproc::process &background = it->second;
-        std::array<std::string, 1> args = {"nspvs"};
-        auto ec = background.start(args, tools_path_.string().c_str());
+        registry_[coin] = reproc::process(reproc::cleanup::terminate, reproc::milliseconds(2000),
+                                          reproc::cleanup::kill, reproc::infinite);
+        std::array<std::string, 1> args = {tools_path_ / "nspv"};
+        auto ec = registry_[coin].start(args, tools_path_.string().c_str());
         if (ec) {
-            DVLOG_F(loguru::Verbosity_FATAL, "couldn't start nspv process with coin: {}, error: {}", coin,
-                    ec.message());
-            this->dispatcher_.trigger<event::fatal_error>(ec);
+            DVLOG_F(loguru::Verbosity_ERROR, "error: {}", ec.message());
             return false;
         }
-        output_registry_.try_emplace(coin, background);
         return true;
     }
-
-    nspv_output::nspv_output(reproc::process &background) noexcept :
-            output(""),
-            output_mutex(),
-            async_drain(
-                    std::async(std::launch::async, [this, &background]() {
-                        thread_safe_string_sink sink(
-                                output,
-                                output_mutex);
-                        return background.drain(
-                                reproc::stream::out,
-                                sink);
-                    })) {}
 }
\ No newline at end of file
diff --git a/modules/blockchain/antara/gaming/blockchain/nspv.system.hpp b/modules/blockchain/antara/gaming/blockchain/nspv.system.hpp
index 5f961f73..0cde94c2 100644
--- a/modules/blockchain/antara/gaming/blockchain/nspv.system.hpp
+++ b/modules/blockchain/antara/gaming/blockchain/nspv.system.hpp
@@ -28,13 +28,13 @@ namespace fs = std::filesystem;
 
 namespace antara::gaming::blockchain {
 
-    struct nspv_output
+    /*struct nspv_output
     {
         nspv_output(reproc::process& background) noexcept;
         std::string output;
         std::mutex output_mutex;
         std::future<std::error_code> async_drain;
-    };
+    };*/
 
     class nspv final : public ecs::logic_update_system<nspv> {
     public:
@@ -45,9 +45,7 @@ namespace antara::gaming::blockchain {
     private:
         std::filesystem::path tools_path_;
         using nspv_registry = std::unordered_map<std::string, reproc::process>;
-        using async_drain_registry = std::unordered_map<std::string, nspv_output>;
         nspv_registry registry_;
-        async_drain_registry output_registry_;
     };
 }
 
diff --git a/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp b/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp
index e9f3a458..dbfdec96 100644
--- a/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp
+++ b/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp
@@ -21,7 +21,7 @@
 
 namespace antara::gaming::blockchain::tests
 {
-    /*TEST_CASE("nspv system creation")
+    TEST_CASE("nspv system creation")
     {
         entt::registry entity_registry;
         [[ maybe_unused ]] entt::dispatcher& dispatcher{entity_registry.set<entt::dispatcher>()};
@@ -29,7 +29,7 @@ namespace antara::gaming::blockchain::tests
 
         auto& nspv_system = mgr.create_system<blockchain::nspv>(std::filesystem::current_path() / "nspv/assets/tools");
         nspv_system.update();
-    }*/
+    }
 
     TEST_CASE("nspv system spawn")
     {
@@ -38,10 +38,10 @@ namespace antara::gaming::blockchain::tests
         antara::gaming::ecs::system_manager mgr{entity_registry};
 
         auto& nspv_system = mgr.create_system<blockchain::nspv>(std::filesystem::current_path() / "nspv/assets/tools");
-        nspv_system.spawn_nspv_instance("RICK");
-        /*for (auto start = std::chrono::steady_clock::now(), now = start; now < start + std::chrono::seconds{15}; now = std::chrono::steady_clock::now())
+        CHECK(nspv_system.spawn_nspv_instance("RICK"));
+        for (auto start = std::chrono::steady_clock::now(), now = start; now < start + std::chrono::seconds{1}; now = std::chrono::steady_clock::now())
         {
             nspv_system.update();
-        }*/
+        }
     }
 }
\ No newline at end of file