diff --git a/include/eosn.login/login.eosn.hpp b/include/eosn.login/login.eosn.hpp
index 2fa84c8..c3397fc 100644
--- a/include/eosn.login/login.eosn.hpp
+++ b/include/eosn.login/login.eosn.hpp
@@ -448,6 +448,35 @@ class [[eosio::contract("login.eosn")]] login : public eosio::contract {
         return false;
     }
 
+    /**
+     * ## STATIC `is_user_id_exists`
+     *
+     * Returns true/false if user ID exists
+     *
+     * ### params
+     *
+     * - `{name} user_id` - user ID
+     * - `{name} [login_contract="login.eosn"]` - (optional) EOSN login contract
+     *
+     * ### returns
+     *
+     * - `{bool}` - [true/false] if user ID exists
+     *
+     * ### example
+     *
+     * ```c++
+     * const name user_id = "123.eosn"_n;
+     * const bool exists = eosn::login::is_user_id_exists( user_id );
+     * //=> true
+     * ```
+     */
+    static bool is_user_id_exists( const name user_id, const name login_contract )
+    {
+        login::users_table _users( login_contract, login_contract.value );
+        auto users = _users.find( user_id.value );
+        return users != _users.end();
+    }
+
     /**
      * ## STATIC `require_auth_user_id`
      *
diff --git a/scripts/build.sh b/scripts/build.sh
index 0e6a532..c03babc 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-# unlock wallet
-cleos wallet unlock --password $(cat ~/eosio-wallet/.pass)
+# # unlock wallet
+# cleos wallet unlock --password $(cat ~/eosio-wallet/.pass)
 
 # build
 
@@ -38,7 +38,7 @@ if [ ! -f "./include/eosn.login/login.eosn.wasm" ]; then
     $CDT ./include/eosn.login/login.eosn.cpp -I include -o include/eosn.login/login.eosn.wasm --no-missing-ricardian-clause
 fi
 
-if [ ! -f "./include/oracle.defi/oracle.defi.wasm" ]; then
-    echo "compiling... [oracle.defi]"
-    $CDT ./include/oracle.defi/oracle.defi.cpp -I include -o include/oracle.defi/oracle.defi.wasm --no-missing-ricardian-clause
-fi
+# if [ ! -f "./include/oracle.defi/oracle.defi.wasm" ]; then
+#     echo "compiling... [oracle.defi]"
+#     $CDT ./include/oracle.defi/oracle.defi.cpp -I include -o include/oracle.defi/oracle.defi.wasm --no-missing-ricardian-clause
+# fi
diff --git a/src/notifiers.cpp b/src/notifiers.cpp
index 86617ee..564b8ea 100644
--- a/src/notifiers.cpp
+++ b/src/notifiers.cpp
@@ -8,7 +8,7 @@ void pomelo::on_transfer( const name from, const name to, const asset quantity,
     if ( to != get_self() || from == "eosio.ram"_n ) return;
 
     // parse memo
-    const auto [ bounty_id, user_id ] = parse_memo(memo);
+    auto [ bounty_id, user_id ] = parse_memo(memo);
     check(bounty_id.value, ERROR_INVALID_MEMO);
 
     // handle token transfer
@@ -29,7 +29,8 @@ void pomelo::deposit_bounty( const name bounty_id, const name user_id, const nam
     const auto token = get_token( ext_quantity );
     const int64_t min_amount = token.min_amount;
     const int64_t max_amount = token.max_amount;
-    const name funder_user_id = user_id.value ? user_id : bounty->author_user_id;    //if no user id specified - assume it came from the author
+    name funder_user_id = user_id.value ? user_id : bounty->author_user_id;         // if no user id specified - assume it came from the author
+    if ( eosn::login::is_user_id_exists(from, get_self() ) ) funder_user_id = from; // if EOSN linked account is sender - override as funder
 
     // TO-DO: bounty can only deposit when state == "pending/open/started"
     check( STATUS_DEPOSIT_TYPES.find(bounty->status) != STATUS_DEPOSIT_TYPES.end(), "pomelo::deposit_bounty: bounty not available for funding");