diff --git a/package-lock.json b/package-lock.json
index e36db01..179b88d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -64,6 +64,24 @@
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       "resolved": "https://registry.npmjs.org/@types/semver/-/semver-5.5.0.tgz",
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+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.8.tgz",
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@@ -996,6 +1023,12 @@
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@@ -1143,6 +1176,26 @@
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+      "dev": true,
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+      "resolved": "https://registry.npmjs.org/bs58check/-/bs58check-2.1.2.tgz",
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@@ -2022,6 +2075,63 @@
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+          "requires": {
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+            "brorand": "^1.1.0",
+            "hash.js": "^1.0.0",
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+            "inherits": "^2.0.4",
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+              "dev": true
+            }
+          }
+        },
+        "ethereumjs-abi": {
+          "version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#8431eab7b3384e65e8126a4602520b78031666fb",
+          "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
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+                "bn.js": "^4.11.0",
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+          "dev": true
+        }
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     },
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@@ -2048,28 +2158,81 @@
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-      "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
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+      "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-0.1.3.tgz",
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-        "ethereumjs-util": "^6.0.0"
+        "@types/pbkdf2": "^3.0.0",
+        "@types/secp256k1": "^4.0.1",
+        "blakejs": "^1.1.0",
+        "browserify-aes": "^1.2.0",
+        "bs58check": "^2.1.2",
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+        "pbkdf2": "^3.0.17",
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-            "rlp": "^2.0.0",
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-            "secp256k1": "^3.0.1"
+            "bn.js": "^4.11.9",
+            "brorand": "^1.1.0",
+            "hash.js": "^1.0.0",
+            "hmac-drbg": "^1.0.1",
+            "inherits": "^2.0.4",
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+          "resolved": "https://registry.npmjs.org/keccak/-/keccak-3.0.1.tgz",
+          "integrity": "sha512-epq90L9jlFWCW7+pQa6JOnKn2Xgl2mtI664seYR6MHskvI9agt7AnDqmAlp9TqU4/caMYbA08Hi5DMZAl5zdkA==",
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+          "requires": {
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+            "node-gyp-build": "^4.2.0"
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+          "resolved": "https://registry.npmjs.org/scrypt-js/-/scrypt-js-3.0.1.tgz",
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+          "dev": true
+        },
+        "secp256k1": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-4.0.2.tgz",
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@@ -3808,12 +3971,24 @@
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+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-2.0.2.tgz",
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+    },
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       "integrity": "sha1-q4hOjn5X44qUR1POxwb3iNF2i7U=",
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@@ -5585,6 +5760,26 @@
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+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
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+        },
+        "websocket": {
+          "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
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+            "nan": "^2.3.3",
+            "typedarray-to-buffer": "^3.1.2",
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     "web3-shh": {
@@ -5619,26 +5814,6 @@
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@@ -5791,9 +5966,9 @@
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-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
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+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.2.tgz",
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       "dev": true
     },
     "yaeti": {