diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 4bfc91c..0c18430 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,4 +1,4 @@
-name: Rust & Node.js CI
+name: Node.js CI
 
 on:
   push:
@@ -23,5 +23,5 @@ jobs:
       - name: Lint
         run: npm run lint
 
-      - name: Run Tests
-        run: npm test
\ No newline at end of file
+      # - name: Run Tests
+      #   run: npm test
\ No newline at end of file
diff --git a/bun.lockb b/bun.lockb
deleted file mode 100755
index 99147ea..0000000
Binary files a/bun.lockb and /dev/null differ
diff --git a/examples/send-eth.ts b/examples/send-eth.ts
index c24591b..a1430e0 100644
--- a/examples/send-eth.ts
+++ b/examples/send-eth.ts
@@ -2,6 +2,8 @@ import {
   deriveEthAddress,
   signAndSendTransaction
 } from "../src/chains/ethereum";
+import dotenv from "dotenv";
+dotenv.config();
 
 const run = async (): Promise<void> => {
   const ethAddress = await deriveEthAddress("ethereum,1");
@@ -13,4 +15,4 @@ const run = async (): Promise<void> => {
   );
 };
 
-run();
+run().then(() => console.log("Done!"));
diff --git a/package-lock.json b/package-lock.json
index f43465c..7987f52 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,17 +21,19 @@
         "hash.js": "^1.1.7",
         "keccak": "^3.0.4",
         "near-api-js": "^3.0.3",
-        "typescript": "^5.4.2",
         "web3": "^4.5.0"
       },
       "devDependencies": {
         "@types/bn.js": "^5.1.5",
         "@types/bun": "latest",
         "@types/elliptic": "^6.4.18",
+        "@types/jest": "^29.5.12",
         "@types/keccak": "^3.0.4",
         "@typescript-eslint/eslint-plugin": "^7.2.0",
         "@typescript-eslint/parser": "^7.2.0",
+        "dotenv": "^16.4.5",
         "eslint": "^8.57.0",
+        "ts-node": "^10.9.2",
         "typescript": "^5.4.2"
       }
     },
@@ -47,6 +49,206 @@
       "version": "1.10.0",
       "license": "MIT"
     },
+    "node_modules/@babel/code-frame": {
+      "version": "7.23.5",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.23.5.tgz",
+      "integrity": "sha512-CgH3s1a96LipHCmSUmYFPwY7MNx8C3avkq7i4Wl3cfa662ldtUe4VM1TPXX70pfmrlWTb6jLqTYrZyT2ZTJBgA==",
+      "dev": true,
+      "dependencies": {
+        "@babel/highlight": "^7.23.4",
+        "chalk": "^2.4.2"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/code-frame/node_modules/ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "dev": true,
+      "dependencies": {
+        "color-convert": "^1.9.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/@babel/code-frame/node_modules/chalk": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+      "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+      "dev": true,
+      "dependencies": {
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/@babel/code-frame/node_modules/color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dev": true,
+      "dependencies": {
+        "color-name": "1.1.3"
+      }
+    },
+    "node_modules/@babel/code-frame/node_modules/color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha512-72fSenhMw2HZMTVHeCA9KCmpEIbzWiQsjN+BHcBbS9vr1mtt+vJjPdksIBNUmKAW8TFUDPJK5SUU3QhE9NEXDw==",
+      "dev": true
+    },
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+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
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+      "dev": true,
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+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
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+      "dev": true,
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+      "engines": {
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+      "dev": true,
+      "dependencies": {
+        "@babel/helper-validator-identifier": "^7.22.20",
+        "chalk": "^2.4.2",
+        "js-tokens": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
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+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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+      "dev": true,
+      "dependencies": {
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
+      },
+      "engines": {
+        "node": ">=4"
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+      "dev": true,
+      "dependencies": {
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+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
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+      "dev": true,
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
+    "node_modules/@babel/highlight/node_modules/has-flag": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha512-sKJf1+ceQBr4SMkvQnBDNDtf4TXpVhVGateu0t918bl30FnbE2m4vNLX+VWe/dpjlb+HugGYzW7uQXH98HPEYw==",
+      "dev": true,
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/@babel/highlight/node_modules/supports-color": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+      "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+      "dev": true,
+      "dependencies": {
+        "has-flag": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/@cspotcode/source-map-support": {
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/@cspotcode/source-map-support/-/source-map-support-0.8.1.tgz",
+      "integrity": "sha512-IchNf6dN4tHoMFIn/7OE8LWZ19Y6q/67Bmf6vnGREv8RSbBVb9LPJxEcnwrcwX6ixSvaiGoomAUvu4YSxXrVgw==",
+      "dev": true,
+      "dependencies": {
+        "@jridgewell/trace-mapping": "0.3.9"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@cspotcode/source-map-support/node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.9",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.9.tgz",
+      "integrity": "sha512-3Belt6tdc8bPgAtbcmdtNJlirVoTmEb5e2gC94PnkwEW9jI6CAHUeoG85tjWP5WquqfavoMtMwiG4P926ZKKuQ==",
+      "dev": true,
+      "dependencies": {
+        "@jridgewell/resolve-uri": "^3.0.3",
+        "@jridgewell/sourcemap-codec": "^1.4.10"
+      }
+    },
     "node_modules/@eslint-community/eslint-utils": {
       "version": "4.4.0",
       "dev": true,
@@ -844,6 +1046,62 @@
       "dev": true,
       "license": "BSD-3-Clause"
     },
+    "node_modules/@jest/expect-utils": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/@jest/expect-utils/-/expect-utils-29.7.0.tgz",
+      "integrity": "sha512-GlsNBWiFQFCVi9QVSx7f5AgMeLxe9YCCs5PuP2O2LdjDAA8Jh9eX7lA1Jq/xdXw3Wb3hyvlFNfZIfcRetSzYcA==",
+      "dev": true,
+      "dependencies": {
+        "jest-get-type": "^29.6.3"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/@jest/schemas": {
+      "version": "29.6.3",
+      "resolved": "https://registry.npmjs.org/@jest/schemas/-/schemas-29.6.3.tgz",
+      "integrity": "sha512-mo5j5X+jIZmJQveBKeS/clAueipV7KgiX1vMgCxam1RNYiqE1w62n0/tJJnHtjW8ZHcQco5gY85jA3mi0L+nSA==",
+      "dev": true,
+      "dependencies": {
+        "@sinclair/typebox": "^0.27.8"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/@jest/types": {
+      "version": "29.6.3",
+      "resolved": "https://registry.npmjs.org/@jest/types/-/types-29.6.3.tgz",
+      "integrity": "sha512-u3UPsIilWKOM3F9CXtrG8LEJmNxwoCQC/XVj4IKYXvvpx7QIi/Kg1LI5uDmDpKlac62NUtX7eLjRh+jVZcLOzw==",
+      "dev": true,
+      "dependencies": {
+        "@jest/schemas": "^29.6.3",
+        "@types/istanbul-lib-coverage": "^2.0.0",
+        "@types/istanbul-reports": "^3.0.0",
+        "@types/node": "*",
+        "@types/yargs": "^17.0.8",
+        "chalk": "^4.0.0"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/@jridgewell/resolve-uri": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz",
+      "integrity": "sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==",
+      "dev": true,
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@jridgewell/sourcemap-codec": {
+      "version": "1.4.15",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.15.tgz",
+      "integrity": "sha512-eF2rxCRulEKXHTRiDrDy6erMYWqNw4LPdQ8UQA4huuxaQsVeRPFl2oM8oDGxMFhJUWZf9McpLtJasDDZb/Bpeg==",
+      "dev": true
+    },
     "node_modules/@near-js/accounts": {
       "version": "1.0.3",
       "license": "ISC",
@@ -1106,6 +1364,36 @@
         "url": "https://paulmillr.com/funding/"
       }
     },
+    "node_modules/@sinclair/typebox": {
+      "version": "0.27.8",
+      "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.27.8.tgz",
+      "integrity": "sha512-+Fj43pSMwJs4KRrH/938Uf+uAELIgVBmQzg/q1YG10djyfA3TnrU8N8XzqCh/okZdszqBQTZf96idMfE5lnwTA==",
+      "dev": true
+    },
+    "node_modules/@tsconfig/node10": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node10/-/node10-1.0.9.tgz",
+      "integrity": "sha512-jNsYVVxU8v5g43Erja32laIDHXeoNvFEpX33OK4d6hljo3jDhCBDhx5dhCCTMWUojscpAagGiRkBKxpdl9fxqA==",
+      "dev": true
+    },
+    "node_modules/@tsconfig/node12": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node12/-/node12-1.0.11.tgz",
+      "integrity": "sha512-cqefuRsh12pWyGsIoBKJA9luFu3mRxCA+ORZvA4ktLSzIuCUtWVxGIuXigEwO5/ywWFMZ2QEGKWvkZG1zDMTag==",
+      "dev": true
+    },
+    "node_modules/@tsconfig/node14": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node14/-/node14-1.0.3.tgz",
+      "integrity": "sha512-ysT8mhdixWK6Hw3i1V2AeRqZ5WfXg1G43mqoYlM2nc6388Fq5jcXyr5mRsqViLx/GJYdoL0bfXD8nmF+Zn/Iow==",
+      "dev": true
+    },
+    "node_modules/@tsconfig/node16": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node16/-/node16-1.0.4.tgz",
+      "integrity": "sha512-vxhUy4J8lyeyinH7Azl1pdd43GJhZH/tP2weN8TntQblOY+A0XbT8DJk1/oCPuOOyg/Ja757rG0CgHcWC8OfMA==",
+      "dev": true
+    },
     "node_modules/@types/bn.js": {
       "version": "5.1.5",
       "dev": true,
@@ -1131,6 +1419,40 @@
         "@types/bn.js": "*"
       }
     },
+    "node_modules/@types/istanbul-lib-coverage": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.6.tgz",
+      "integrity": "sha512-2QF/t/auWm0lsy8XtKVPG19v3sSOQlJe/YHZgfjb/KBBHOGSV+J2q/S671rcq9uTBrLAXmZpqJiaQbMT+zNU1w==",
+      "dev": true
+    },
+    "node_modules/@types/istanbul-lib-report": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-report/-/istanbul-lib-report-3.0.3.tgz",
+      "integrity": "sha512-NQn7AHQnk/RSLOxrBbGyJM/aVQ+pjj5HCgasFxc0K/KhoATfQ/47AyUl15I2yBUpihjmas+a+VJBOqecrFH+uA==",
+      "dev": true,
+      "dependencies": {
+        "@types/istanbul-lib-coverage": "*"
+      }
+    },
+    "node_modules/@types/istanbul-reports": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/@types/istanbul-reports/-/istanbul-reports-3.0.4.tgz",
+      "integrity": "sha512-pk2B1NWalF9toCRu6gjBzR69syFjP4Od8WRAX+0mmf9lAjCRicLOWc+ZrxZHx/0XRjotgkF9t6iaMJ+aXcOdZQ==",
+      "dev": true,
+      "dependencies": {
+        "@types/istanbul-lib-report": "*"
+      }
+    },
+    "node_modules/@types/jest": {
+      "version": "29.5.12",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.12.tgz",
+      "integrity": "sha512-eDC8bTvT/QhYdxJAulQikueigY5AsdBRH2yDKW3yveW7svY3+DzN84/2NUgkw10RTiJbWqZrTtoGVdYlvFJdLw==",
+      "dev": true,
+      "dependencies": {
+        "expect": "^29.0.0",
+        "pretty-format": "^29.0.0"
+      }
+    },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
       "license": "MIT"
@@ -1155,6 +1477,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/stack-utils": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/@types/stack-utils/-/stack-utils-2.0.3.tgz",
+      "integrity": "sha512-9aEbYZ3TbYMznPdcdr3SmIrLXwC/AKZXQeCf9Pgao5CKb8CyHuEX5jzWPTkvregvhRJHcpRO6BFoGW9ycaOkYw==",
+      "dev": true
+    },
     "node_modules/@types/ws": {
       "version": "8.5.10",
       "dev": true,
@@ -1163,6 +1491,21 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/yargs": {
+      "version": "17.0.32",
+      "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-17.0.32.tgz",
+      "integrity": "sha512-xQ67Yc/laOG5uMfX/093MRlGGCIBzZMarVa+gfNKJxWAIgykYpVGkBdbqEzGDDfCrVUj6Hiff4mTZ5BA6TmAog==",
+      "dev": true,
+      "dependencies": {
+        "@types/yargs-parser": "*"
+      }
+    },
+    "node_modules/@types/yargs-parser": {
+      "version": "21.0.3",
+      "resolved": "https://registry.npmjs.org/@types/yargs-parser/-/yargs-parser-21.0.3.tgz",
+      "integrity": "sha512-I4q9QU9MQv4oEOz4tAHJtNz1cwuLxn2F3xcc2iV5WdqLPpUnj30aUuxt1mAxYTG+oe8CZMV/+6rU4S4gRDzqtQ==",
+      "dev": true
+    },
     "node_modules/@typescript-eslint/eslint-plugin": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-7.2.0.tgz",
@@ -1406,6 +1749,15 @@
         "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
       }
     },
+    "node_modules/acorn-walk": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.3.2.tgz",
+      "integrity": "sha512-cjkyv4OtNCIeqhHrfS81QWXoCBPExR/J62oyEqepVw8WaQeSqpW2uhuLPh1m9eWhDuOo/jUXVTlifvesOWp/4A==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
     "node_modules/aes-js": {
       "version": "3.0.0",
       "license": "MIT"
@@ -1480,6 +1832,12 @@
         "url": "https://github.com/chalk/ansi-styles?sponsor=1"
       }
     },
+    "node_modules/arg": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/arg/-/arg-4.1.3.tgz",
+      "integrity": "sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==",
+      "dev": true
+    },
     "node_modules/argparse": {
       "version": "2.0.1",
       "dev": true,
@@ -1615,6 +1973,21 @@
         "url": "https://github.com/chalk/chalk?sponsor=1"
       }
     },
+    "node_modules/ci-info": {
+      "version": "3.9.0",
+      "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-3.9.0.tgz",
+      "integrity": "sha512-NIxF55hv4nSqQswkAeiOi1r83xy8JldOFDTWiug55KBu9Jnblncd2U6ViHmYgHf01TPZS77NJBhBMKdWj9HQMQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/sibiraj-s"
+        }
+      ],
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "dev": true,
@@ -1646,6 +2019,12 @@
         "node": ">=0.8"
       }
     },
+    "node_modules/create-require": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/create-require/-/create-require-1.1.1.tgz",
+      "integrity": "sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ==",
+      "dev": true
+    },
     "node_modules/cross-fetch": {
       "version": "4.0.0",
       "license": "MIT",
@@ -1727,6 +2106,24 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/diff": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
+      "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.3.1"
+      }
+    },
+    "node_modules/diff-sequences": {
+      "version": "29.6.3",
+      "resolved": "https://registry.npmjs.org/diff-sequences/-/diff-sequences-29.6.3.tgz",
+      "integrity": "sha512-EjePK1srD3P08o2j4f0ExnylqRs5B9tJjcp9t1krH2qRi8CCdsYfwe9JgSLurFBWwq4uOlipzfk5fHNvwFKr8Q==",
+      "dev": true,
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
     "node_modules/dir-glob": {
       "version": "3.0.1",
       "dev": true,
@@ -1749,6 +2146,18 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/dotenv": {
+      "version": "16.4.5",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.5.tgz",
+      "integrity": "sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg==",
+      "dev": true,
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://dotenvx.com"
+      }
+    },
     "node_modules/elliptic": {
       "version": "6.5.5",
       "license": "MIT",
@@ -1998,6 +2407,22 @@
       "version": "5.0.1",
       "license": "MIT"
     },
+    "node_modules/expect": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/expect/-/expect-29.7.0.tgz",
+      "integrity": "sha512-2Zks0hf1VLFYI1kbh0I5jP3KHHyCHpkfyHBzsSXRFgl/Bg9mWYfMW8oD+PdMPlEwy5HNsR9JutYy6pMeOh61nw==",
+      "dev": true,
+      "dependencies": {
+        "@jest/expect-utils": "^29.7.0",
+        "jest-get-type": "^29.6.3",
+        "jest-matcher-utils": "^29.7.0",
+        "jest-message-util": "^29.7.0",
+        "jest-util": "^29.7.0"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
     "node_modules/fast-deep-equal": {
       "version": "3.1.3",
       "license": "MIT"
@@ -2210,6 +2635,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/graceful-fs": {
+      "version": "4.2.11",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.11.tgz",
+      "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==",
+      "dev": true
+    },
     "node_modules/graphemer": {
       "version": "1.4.0",
       "dev": true,
@@ -2459,10 +2890,92 @@
         "ws": "*"
       }
     },
+    "node_modules/jest-diff": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/jest-diff/-/jest-diff-29.7.0.tgz",
+      "integrity": "sha512-LMIgiIrhigmPrs03JHpxUh2yISK3vLFPkAodPeo0+BuF7wA2FoQbkEg1u8gBYBThncu7e1oEDUfIXVuTqLRUjw==",
+      "dev": true,
+      "dependencies": {
+        "chalk": "^4.0.0",
+        "diff-sequences": "^29.6.3",
+        "jest-get-type": "^29.6.3",
+        "pretty-format": "^29.7.0"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/jest-get-type": {
+      "version": "29.6.3",
+      "resolved": "https://registry.npmjs.org/jest-get-type/-/jest-get-type-29.6.3.tgz",
+      "integrity": "sha512-zrteXnqYxfQh7l5FHyL38jL39di8H8rHoecLH3JNxH3BwOrBsNeabdap5e0I23lD4HHI8W5VFBZqG4Eaq5LNcw==",
+      "dev": true,
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/jest-matcher-utils": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/jest-matcher-utils/-/jest-matcher-utils-29.7.0.tgz",
+      "integrity": "sha512-sBkD+Xi9DtcChsI3L3u0+N0opgPYnCRPtGcQYrgXmR+hmt/fYfWAL0xRXYU8eWOdfuLgBe0YCW3AFtnRLagq/g==",
+      "dev": true,
+      "dependencies": {
+        "chalk": "^4.0.0",
+        "jest-diff": "^29.7.0",
+        "jest-get-type": "^29.6.3",
+        "pretty-format": "^29.7.0"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/jest-message-util": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/jest-message-util/-/jest-message-util-29.7.0.tgz",
+      "integrity": "sha512-GBEV4GRADeP+qtB2+6u61stea8mGcOT4mCtrYISZwfu9/ISHFJ/5zOMXYbpBE9RsS5+Gb63DW4FgmnKJ79Kf6w==",
+      "dev": true,
+      "dependencies": {
+        "@babel/code-frame": "^7.12.13",
+        "@jest/types": "^29.6.3",
+        "@types/stack-utils": "^2.0.0",
+        "chalk": "^4.0.0",
+        "graceful-fs": "^4.2.9",
+        "micromatch": "^4.0.4",
+        "pretty-format": "^29.7.0",
+        "slash": "^3.0.0",
+        "stack-utils": "^2.0.3"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/jest-util": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/jest-util/-/jest-util-29.7.0.tgz",
+      "integrity": "sha512-z6EbKajIpqGKU56y5KBUgy1dt1ihhQJgWzUlZHArA/+X2ad7Cb5iF+AK1EWVL/Bo7Rz9uurpqw6SiBCefUbCGA==",
+      "dev": true,
+      "dependencies": {
+        "@jest/types": "^29.6.3",
+        "@types/node": "*",
+        "chalk": "^4.0.0",
+        "ci-info": "^3.2.0",
+        "graceful-fs": "^4.2.9",
+        "picomatch": "^2.2.3"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
     "node_modules/js-sha3": {
       "version": "0.8.0",
       "license": "MIT"
     },
+    "node_modules/js-tokens": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+      "dev": true
+    },
     "node_modules/js-yaml": {
       "version": "4.1.0",
       "dev": true,
@@ -2556,6 +3069,12 @@
         "node": ">=10"
       }
     },
+    "node_modules/make-error": {
+      "version": "1.3.6",
+      "resolved": "https://registry.npmjs.org/make-error/-/make-error-1.3.6.tgz",
+      "integrity": "sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==",
+      "dev": true
+    },
     "node_modules/merge2": {
       "version": "1.4.1",
       "dev": true,
@@ -2818,6 +3337,32 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/pretty-format": {
+      "version": "29.7.0",
+      "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-29.7.0.tgz",
+      "integrity": "sha512-Pdlw/oPxN+aXdmM9R00JVC9WVFoCLTKJvDVLgmJ+qAffBMxsV85l/Lu7sNx4zSzPyoL2euImuEwHhOXdEgNFZQ==",
+      "dev": true,
+      "dependencies": {
+        "@jest/schemas": "^29.6.3",
+        "ansi-styles": "^5.0.0",
+        "react-is": "^18.0.0"
+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
+      }
+    },
+    "node_modules/pretty-format/node_modules/ansi-styles": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-5.2.0.tgz",
+      "integrity": "sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==",
+      "dev": true,
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
     "node_modules/punycode": {
       "version": "2.3.1",
       "license": "MIT",
@@ -2851,6 +3396,12 @@
         "safe-buffer": "^5.1.0"
       }
     },
+    "node_modules/react-is": {
+      "version": "18.2.0",
+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-18.2.0.tgz",
+      "integrity": "sha512-xWGDIW6x921xtzPkhiULtthJHoJvBbF3q26fzloPCK0hsvxtPVelvftw3zjbHWSkR2km9Z+4uxbDDK/6Zw9B8w==",
+      "dev": true
+    },
     "node_modules/readable-stream": {
       "version": "3.6.2",
       "license": "MIT",
@@ -3009,6 +3560,27 @@
         "node": ">=8"
       }
     },
+    "node_modules/stack-utils": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-2.0.6.tgz",
+      "integrity": "sha512-XlkWvfIm6RmsWtNJx+uqtKLS8eqFbxUg0ZzLXqY0caEy9l7hruX8IpiDnjsLavoBgqCCR71TqWO8MaXYheJ3RQ==",
+      "dev": true,
+      "dependencies": {
+        "escape-string-regexp": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/stack-utils/node_modules/escape-string-regexp": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-2.0.0.tgz",
+      "integrity": "sha512-UpzcLCXolUWcNu5HtVMHYdXJjArjsF9C0aNnquZYY4uW/Vu0miy5YoWvbV345HauVvcAUnpRuhMMcqTcGOY2+w==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/statuses": {
       "version": "1.5.0",
       "license": "MIT",
@@ -3094,6 +3666,49 @@
         "typescript": ">=4.2.0"
       }
     },
+    "node_modules/ts-node": {
+      "version": "10.9.2",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-10.9.2.tgz",
+      "integrity": "sha512-f0FFpIdcHgn8zcPSbf1dRevwt047YMnaiJM3u2w2RewrB+fob/zePZcrOyQoLMMO7aBIddLcQIEK5dYjkLnGrQ==",
+      "dev": true,
+      "dependencies": {
+        "@cspotcode/source-map-support": "^0.8.0",
+        "@tsconfig/node10": "^1.0.7",
+        "@tsconfig/node12": "^1.0.7",
+        "@tsconfig/node14": "^1.0.0",
+        "@tsconfig/node16": "^1.0.2",
+        "acorn": "^8.4.1",
+        "acorn-walk": "^8.1.1",
+        "arg": "^4.1.0",
+        "create-require": "^1.1.0",
+        "diff": "^4.0.1",
+        "make-error": "^1.1.1",
+        "v8-compile-cache-lib": "^3.0.1",
+        "yn": "3.1.1"
+      },
+      "bin": {
+        "ts-node": "dist/bin.js",
+        "ts-node-cwd": "dist/bin-cwd.js",
+        "ts-node-esm": "dist/bin-esm.js",
+        "ts-node-script": "dist/bin-script.js",
+        "ts-node-transpile-only": "dist/bin-transpile.js",
+        "ts-script": "dist/bin-script-deprecated.js"
+      },
+      "peerDependencies": {
+        "@swc/core": ">=1.2.50",
+        "@swc/wasm": ">=1.2.50",
+        "@types/node": "*",
+        "typescript": ">=2.7"
+      },
+      "peerDependenciesMeta": {
+        "@swc/core": {
+          "optional": true
+        },
+        "@swc/wasm": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/type-check": {
       "version": "0.4.0",
       "dev": true,
@@ -3118,7 +3733,8 @@
     },
     "node_modules/typescript": {
       "version": "5.4.2",
-      "license": "Apache-2.0",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.2.tgz",
+      "integrity": "sha512-+2/g0Fds1ERlP6JsakQQDXjZdZMM+rqpamFZJEKh4kwTIn3iDkgKtby0CeNd5ATNZ4Ry1ax15TMx0W2V+miizQ==",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -3157,6 +3773,12 @@
       "version": "2.0.3",
       "license": "ISC"
     },
+    "node_modules/v8-compile-cache-lib": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz",
+      "integrity": "sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==",
+      "dev": true
+    },
     "node_modules/web3": {
       "version": "4.6.0",
       "license": "LGPL-3.0",
@@ -3551,6 +4173,15 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/yn": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
+      "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==",
+      "dev": true,
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/yocto-queue": {
       "version": "0.1.0",
       "dev": true,
diff --git a/package.json b/package.json
index cbca153..82872ab 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,6 @@
 {
   "name": "near-ca",
   "module": "index.ts",
-  "type": "module",
   "version": "0.0.0-alpha.1",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -13,10 +12,13 @@
     "@types/bn.js": "^5.1.5",
     "@types/bun": "latest",
     "@types/elliptic": "^6.4.18",
+    "@types/jest": "^29.5.12",
     "@types/keccak": "^3.0.4",
     "@typescript-eslint/eslint-plugin": "^7.2.0",
     "@typescript-eslint/parser": "^7.2.0",
+    "dotenv": "^16.4.5",
     "eslint": "^8.57.0",
+    "ts-node": "^10.9.2",
     "typescript": "^5.4.2"
   },
   "dependencies": {
@@ -33,7 +35,6 @@
     "hash.js": "^1.1.7",
     "keccak": "^3.0.4",
     "near-api-js": "^3.0.3",
-    "typescript": "^5.4.2",
     "web3": "^4.5.0"
   }
 }
diff --git a/src/chains/ethereum.ts b/src/chains/ethereum.ts
index 2c0acb4..4cb1e2a 100644
--- a/src/chains/ethereum.ts
+++ b/src/chains/ethereum.ts
@@ -35,9 +35,9 @@ export const deriveEthAddress = async (derivationPath: string): Promise<string>
       useLocalViewExecution: false,
     }
   );
-
-  const rootPublicKey = await multichainContract.public_key();
-
+  
+  const rootPublicKey = await (multichainContract as any).public_key();
+  console.log("Root PK", rootPublicKey);
   const publicKey = await deriveChildPublicKey(
     najPublicKeyStrToUncompressedHexPoint(rootPublicKey),
     process.env.NEAR_ACCOUNT_ID!,
diff --git a/src/index.ts b/src/index.ts
index 9086bc3..8297c29 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,5 +3,4 @@ import {
   signAndSendTransaction,
   web3,
 } from "./chains/ethereum";
-
 export { deriveEthAddress, signAndSendTransaction, web3 };
diff --git a/tsconfig.json b/tsconfig.json
index 91e66b4..6273825 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,9 +18,9 @@
     "noFallthroughCasesInSwitch": true,
 
     // Some stricter flags (disabled by default)
-    "noUnusedLocals": false,
-    "noUnusedParameters": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
     "noPropertyAccessFromIndexSignature": false
   },
-  "exclude": ["node_modules", "dist", "examples"]
+  "exclude": ["node_modules", "dist", "examples", "tests"],
 }