diff --git a/apitest.js b/apitest.js
index eeea5ca8..cd46daa4 100644
--- a/apitest.js
+++ b/apitest.js
@@ -22,7 +22,7 @@ res[0] = await chai
 .request('localhost:3000')
 .post('/add')
 .send({ value: 11 });
-console.log(res[0].body.tx.event);
+console.log(res[0]);
 
 res[1] = await chai
 .request('localhost:3000')
diff --git a/package-lock.json b/package-lock.json
index 4c4e7641..41bad2a6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2729,6 +2729,20 @@
         "node": ">=4"
       }
     },
+    "node_modules/anymatch": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz",
+      "integrity": "sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "normalize-path": "^3.0.0",
+        "picomatch": "^2.0.4"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
     "node_modules/argparse": {
       "version": "1.0.10",
       "dev": true,
@@ -3014,6 +3028,19 @@
         "node": ">=0.6"
       }
     },
+    "node_modules/binary-extensions": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
+      "integrity": "sha512-Ceh+7ox5qe7LJuLHoY0feh3pHuUDHAcRUeyL2VYghZwfpkNIy/+8Ocg0a3UuSoYzavmylwuLWQOf3hl0jjMMIw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/bn.js": {
       "version": "5.2.0",
       "dev": true,
@@ -3262,6 +3289,19 @@
         "node": ">=6"
       }
     },
+    "node_modules/camelcase": {
+      "version": "6.3.0",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-6.3.0.tgz",
+      "integrity": "sha512-Gmy6FhYlCY7uOElZUSbxo2UCDH8owEk996gkbrpsgGtrJLM3J7jGxl9Ic7Qwwj4ivOE5AWZWRMecDdF7hqGjFA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/caniuse-lite": {
       "version": "1.0.30001451",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001451.tgz",
@@ -3747,10 +3787,12 @@
       "license": "BSD-2-Clause"
     },
     "node_modules/debug": {
-      "version": "4.3.1",
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.0.tgz",
+      "integrity": "sha512-6WTZ/IxCY/T6BALoZHaE4ctp9xm+Z5kY/pzYaCHRFeyVhojxlrm+46y68HA6hr0TcwEssoxNiDEUJQjfPZ/RYA==",
       "license": "MIT",
       "dependencies": {
-        "ms": "2.1.2"
+        "ms": "^2.1.3"
       },
       "engines": {
         "node": ">=6.0"
@@ -3761,6 +3803,12 @@
         }
       }
     },
+    "node_modules/debug/node_modules/ms": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
+      "license": "MIT"
+    },
     "node_modules/decamelize": {
       "version": "1.2.0",
       "license": "MIT",
@@ -5864,6 +5912,19 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-binary-path": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz",
+      "integrity": "sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "binary-extensions": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/is-boolean-object": {
       "version": "1.1.0",
       "dev": true,
@@ -6091,6 +6152,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/js-sha3": {
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.8.0.tgz",
+      "integrity": "sha512-gF1cRrHhIzNfToc802P800N8PpXS+evLLXfsVpowqmAFR9uwbi89WvXg2QspOmXL8QL86J4T1EpFu+yUkwJY3Q==",
+      "license": "MIT"
+    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "license": "MIT"
@@ -6696,26 +6763,6 @@
         "node": ">=6"
       }
     },
-    "node_modules/mocha/node_modules/anymatch": {
-      "version": "3.1.1",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "normalize-path": "^3.0.0",
-        "picomatch": "^2.0.4"
-      },
-      "engines": {
-        "node": ">= 8"
-      }
-    },
-    "node_modules/mocha/node_modules/binary-extensions": {
-      "version": "2.2.0",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/mocha/node_modules/camelcase": {
       "version": "5.3.1",
       "dev": true,
@@ -6806,17 +6853,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/mocha/node_modules/is-binary-path": {
-      "version": "2.1.0",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "binary-extensions": "^2.0.0"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/mocha/node_modules/is-fullwidth-code-point": {
       "version": "2.0.0",
       "dev": true,
@@ -10572,9 +10608,10 @@
       }
     },
     "node_modules/picocolors": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz",
-      "integrity": "sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ=="
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
+      "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==",
+      "license": "ISC"
     },
     "node_modules/picomatch": {
       "version": "2.3.1",
@@ -11449,9 +11486,10 @@
       }
     },
     "node_modules/solc": {
-      "version": "0.8.25",
-      "resolved": "https://registry.npmjs.org/solc/-/solc-0.8.25.tgz",
-      "integrity": "sha512-7P0TF8gPeudl1Ko3RGkyY6XVCxe2SdD/qQhtns1vl3yAbK/PDifKDLHGtx1t7mX3LgR7ojV7Fg/Kc6Q9D2T8UQ==",
+      "version": "0.8.26",
+      "resolved": "https://registry.npmjs.org/solc/-/solc-0.8.26.tgz",
+      "integrity": "sha512-yiPQNVf5rBFHwN6SIf3TUUvVAFKcQqmSUFeq+fb6pNRCo0ZCgpYOZDi3BVoezCPIAcKrVYd/qXlBLUP9wVrZ9g==",
+      "license": "MIT",
       "dependencies": {
         "command-exists": "^1.2.8",
         "commander": "^8.1.0",
@@ -11476,10 +11514,6 @@
         "node": ">= 12"
       }
     },
-    "node_modules/solc/node_modules/js-sha3": {
-      "version": "0.8.0",
-      "license": "MIT"
-    },
     "node_modules/source-list-map": {
       "version": "2.0.1",
       "dev": true,
@@ -11603,19 +11637,23 @@
       "license": "MIT"
     },
     "node_modules/string-width": {
-      "version": "4.2.0",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
       "license": "MIT",
       "dependencies": {
         "emoji-regex": "^8.0.0",
         "is-fullwidth-code-point": "^3.0.0",
-        "strip-ansi": "^6.0.0"
+        "strip-ansi": "^6.0.1"
       },
       "engines": {
         "node": ">=8"
       }
     },
     "node_modules/string-width/node_modules/ansi-regex": {
-      "version": "5.0.0",
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
       "license": "MIT",
       "engines": {
         "node": ">=8"
@@ -11626,10 +11664,12 @@
       "license": "MIT"
     },
     "node_modules/string-width/node_modules/strip-ansi": {
-      "version": "6.0.0",
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
       "license": "MIT",
       "dependencies": {
-        "ansi-regex": "^5.0.0"
+        "ansi-regex": "^5.0.1"
       },
       "engines": {
         "node": ">=8"
@@ -12538,17 +12578,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/yargs-unparser/node_modules/camelcase": {
-      "version": "6.2.0",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/yargs-unparser/node_modules/decamelize": {
       "version": "4.0.0",
       "dev": true,
@@ -14536,6 +14565,16 @@
         "color-convert": "^1.9.0"
       }
     },
+    "anymatch": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz",
+      "integrity": "sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==",
+      "dev": true,
+      "requires": {
+        "normalize-path": "^3.0.0",
+        "picomatch": "^2.0.4"
+      }
+    },
     "argparse": {
       "version": "1.0.10",
       "dev": true,
@@ -14733,6 +14772,12 @@
       "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.51.tgz",
       "integrity": "sha512-GPEid2Y9QU1Exl1rpO9B2IPJGHPSupF5GnVIP0blYvNOMer2bTvSWs1jGOUg04hTmu67nmLsQ9TBo1puaotBHg=="
     },
+    "binary-extensions": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
+      "integrity": "sha512-Ceh+7ox5qe7LJuLHoY0feh3pHuUDHAcRUeyL2VYghZwfpkNIy/+8Ocg0a3UuSoYzavmylwuLWQOf3hl0jjMMIw==",
+      "dev": true
+    },
     "bn.js": {
       "version": "5.2.0",
       "dev": true
@@ -14918,6 +14963,12 @@
       "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
       "dev": true
     },
+    "camelcase": {
+      "version": "6.3.0",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-6.3.0.tgz",
+      "integrity": "sha512-Gmy6FhYlCY7uOElZUSbxo2UCDH8owEk996gkbrpsgGtrJLM3J7jGxl9Ic7Qwwj4ivOE5AWZWRMecDdF7hqGjFA==",
+      "dev": true
+    },
     "caniuse-lite": {
       "version": "1.0.30001451",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001451.tgz",
@@ -15274,9 +15325,18 @@
       "dev": true
     },
     "debug": {
-      "version": "4.3.1",
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.0.tgz",
+      "integrity": "sha512-6WTZ/IxCY/T6BALoZHaE4ctp9xm+Z5kY/pzYaCHRFeyVhojxlrm+46y68HA6hr0TcwEssoxNiDEUJQjfPZ/RYA==",
       "requires": {
-        "ms": "2.1.2"
+        "ms": "^2.1.3"
+      },
+      "dependencies": {
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        }
       }
     },
     "decamelize": {
@@ -16676,6 +16736,15 @@
       "version": "1.0.1",
       "dev": true
     },
+    "is-binary-path": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz",
+      "integrity": "sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==",
+      "dev": true,
+      "requires": {
+        "binary-extensions": "^2.0.0"
+      }
+    },
     "is-boolean-object": {
       "version": "1.1.0",
       "dev": true,
@@ -16802,6 +16871,11 @@
         }
       }
     },
+    "js-sha3": {
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.8.0.tgz",
+      "integrity": "sha512-gF1cRrHhIzNfToc802P800N8PpXS+evLLXfsVpowqmAFR9uwbi89WvXg2QspOmXL8QL86J4T1EpFu+yUkwJY3Q=="
+    },
     "js-tokens": {
       "version": "4.0.0"
     },
@@ -17231,18 +17305,6 @@
           "version": "4.1.0",
           "dev": true
         },
-        "anymatch": {
-          "version": "3.1.1",
-          "dev": true,
-          "requires": {
-            "normalize-path": "^3.0.0",
-            "picomatch": "^2.0.4"
-          }
-        },
-        "binary-extensions": {
-          "version": "2.2.0",
-          "dev": true
-        },
         "camelcase": {
           "version": "5.3.1",
           "dev": true
@@ -17294,13 +17356,6 @@
           "version": "4.0.0",
           "dev": true
         },
-        "is-binary-path": {
-          "version": "2.1.0",
-          "dev": true,
-          "requires": {
-            "binary-extensions": "^2.0.0"
-          }
-        },
         "is-fullwidth-code-point": {
           "version": "2.0.0",
           "dev": true
@@ -19649,9 +19704,9 @@
       }
     },
     "picocolors": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz",
-      "integrity": "sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ=="
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
+      "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA=="
     },
     "picomatch": {
       "version": "2.3.1",
@@ -20242,9 +20297,9 @@
       "dev": true
     },
     "solc": {
-      "version": "0.8.25",
-      "resolved": "https://registry.npmjs.org/solc/-/solc-0.8.25.tgz",
-      "integrity": "sha512-7P0TF8gPeudl1Ko3RGkyY6XVCxe2SdD/qQhtns1vl3yAbK/PDifKDLHGtx1t7mX3LgR7ojV7Fg/Kc6Q9D2T8UQ==",
+      "version": "0.8.26",
+      "resolved": "https://registry.npmjs.org/solc/-/solc-0.8.26.tgz",
+      "integrity": "sha512-yiPQNVf5rBFHwN6SIf3TUUvVAFKcQqmSUFeq+fb6pNRCo0ZCgpYOZDi3BVoezCPIAcKrVYd/qXlBLUP9wVrZ9g==",
       "requires": {
         "command-exists": "^1.2.8",
         "commander": "^8.1.0",
@@ -20259,9 +20314,6 @@
           "version": "8.3.0",
           "resolved": "https://registry.npmjs.org/commander/-/commander-8.3.0.tgz",
           "integrity": "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww=="
-        },
-        "js-sha3": {
-          "version": "0.8.0"
         }
       }
     },
@@ -20352,23 +20404,29 @@
       }
     },
     "string-width": {
-      "version": "4.2.0",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
       "requires": {
         "emoji-regex": "^8.0.0",
         "is-fullwidth-code-point": "^3.0.0",
-        "strip-ansi": "^6.0.0"
+        "strip-ansi": "^6.0.1"
       },
       "dependencies": {
         "ansi-regex": {
-          "version": "5.0.0"
+          "version": "5.0.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+          "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ=="
         },
         "emoji-regex": {
           "version": "8.0.0"
         },
         "strip-ansi": {
-          "version": "6.0.0",
+          "version": "6.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+          "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
           "requires": {
-            "ansi-regex": "^5.0.0"
+            "ansi-regex": "^5.0.1"
           }
         }
       }
@@ -21040,10 +21098,6 @@
         "is-plain-obj": "^2.1.0"
       },
       "dependencies": {
-        "camelcase": {
-          "version": "6.2.0",
-          "dev": true
-        },
         "decamelize": {
           "version": "4.0.0",
           "dev": true