diff --git a/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp b/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp
index c3f2169f..de76e98e 100644
--- a/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp
+++ b/modules/blockchain/antara/gaming/blockchain/nspv.system.cpp
@@ -114,4 +114,8 @@ namespace antara::gaming::blockchain {
         }
         return true;
     }
+
+    bool nspv::is_wif_wallet_exist() noexcept {
+        return std::filesystem::exists(antara::gaming::core::assets_real_path() / "blockchain/encrypted.wallet.wif");
+    }
 }
\ 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 bcd5326f..8941461a 100644
--- a/modules/blockchain/antara/gaming/blockchain/nspv.system.hpp
+++ b/modules/blockchain/antara/gaming/blockchain/nspv.system.hpp
@@ -27,58 +27,22 @@
 namespace fs = std::filesystem;
 
 namespace antara::gaming::blockchain {
-    class thread_safe_string_sink {
-        std::string &out_;
-        std::string &err_;
-        std::mutex &mutex_;
-    public:
-        thread_safe_string_sink(std::string &out, std::string& err, std::mutex &mutex)
-                : out_(out), err_(err), mutex_(mutex)
-        {}
-
-        bool
-        operator()(reproc::stream stream, const uint8_t *buffer, unsigned int size)
-        {
-            std::lock_guard<std::mutex> lock(mutex_);
-            switch (stream) {
-                case reproc::stream::out:
-                    out_.append(reinterpret_cast<const char *>(buffer), size);
-                    break;
-                case reproc::stream::err:
-                    err_.append(reinterpret_cast<const char *>(buffer), size);
-                    break;
-                case reproc::stream::in:
-                    break;
-            }
-            return true;
-        }
-    };
-
     struct nspv_process {
         nspv_process(reproc::process background_) noexcept:
                 background(std::move(background_)) {
-            //sink_thread = std::thread([this]() { this->background.drain(thread_safe_string_sink(out, err, process_mutex)); });
         }
 
 
         ~nspv_process() {
             auto ec = background.stop(reproc::cleanup::terminate, reproc::milliseconds(2000),
-                                              reproc::cleanup::kill,
-                                              reproc::infinite);
+                                      reproc::cleanup::kill,
+                                      reproc::infinite);
             if (ec) {
                 VLOG_SCOPE_F(loguru::Verbosity_ERROR, "error: %s", ec.message().c_str());
             }
-
-            /*if (sink_thread.joinable()) {
-                sink_thread.join();
-            }*/
         }
 
         reproc::process background;
-        //std::string out;
-        //std::string err;
-        //std::mutex process_mutex;
-        //std::thread sink_thread;
     };
 
     class nspv final : public ecs::logic_update_system<nspv> {
@@ -87,6 +51,8 @@ namespace antara::gaming::blockchain {
 
         void update() noexcept final;
 
+        static bool is_wif_wallet_exist() noexcept;
+
         bool spawn_nspv_instance(const std::string &coin) noexcept;
 
         ~nspv() noexcept final;
diff --git a/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp b/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp
index 7c430cf0..b33126ed 100644
--- a/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp
+++ b/modules/blockchain/antara/gaming/blockchain/nspv.system.tests.cpp
@@ -39,5 +39,6 @@ namespace antara::gaming::blockchain::tests
 
         auto& nspv_system = mgr.create_system<blockchain::nspv>(std::filesystem::current_path() / "nspv/assets/tools");
         CHECK(nspv_system.spawn_nspv_instance("RICK"));
+        CHECK_FALSE(blockchain::nspv::is_wif_wallet_exist());
     }
 }
\ No newline at end of file