diff --git a/yarn.lock b/yarn.lock
index 239f867b9e..b8af47e2f7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1410,14 +1410,14 @@
     typedoc-plugin-no-inherit "^1.1.6"
     typescript "^3.3.3"
 
-"@polkadot/keyring@^0.34.21":
-  version "0.34.21"
-  resolved "https://registry.yarnpkg.com/@polkadot/keyring/-/keyring-0.34.21.tgz#1fa44bc90029443db960fc0edbf7a5fb251e2de0"
-  integrity sha512-9yIxAn51DY1/ZE6dH920MnQIzRlR+s3QKKk3rICChnzJBJFki0yfmvTZ/3Wi/p+bK7WjFMrzm03ZtAQBzOgUsQ==
+"@polkadot/keyring@^0.34.22":
+  version "0.34.22"
+  resolved "https://registry.yarnpkg.com/@polkadot/keyring/-/keyring-0.34.22.tgz#1352a8dc5924e19d7c551422ced4b20ab544fefb"
+  integrity sha512-aFxY4s69RfMyqAIwZtwHSZXz5i8Ly4gWZ+wUwYsyvlC/SgDJbvbE5xu9OqjX3xvcxiPkikiM6Askcqq6056jsQ==
   dependencies:
     "@babel/runtime" "^7.3.1"
-    "@polkadot/util" "^0.34.21"
-    "@polkadot/util-crypto" "^0.34.21"
+    "@polkadot/util" "^0.34.22"
+    "@polkadot/util-crypto" "^0.34.22"
     "@types/bs58" "^4.0.0"
     bs58 "^4.0.1"
 
@@ -1431,27 +1431,29 @@
   resolved "https://registry.yarnpkg.com/@polkadot/ts/-/ts-0.1.53.tgz#6fae961bed882b085c5b8940ef2d482d3dd36292"
   integrity sha512-TOsr0OD191SEchYKBi7v+rFrnRtjOAVaY6U4fq75uhh/Al9wvs0pUt2QxhzAgTBq+BrKk4gGvaSyiciR+HoDCg==
 
-"@polkadot/util-crypto@^0.34.21":
-  version "0.34.21"
-  resolved "https://registry.yarnpkg.com/@polkadot/util-crypto/-/util-crypto-0.34.21.tgz#b84cd47a03522f4dfaacca3e465771fcab4b283f"
-  integrity sha512-nDNQEbbCr9u6SfF1/Ts+EKUO4Nl70NqeLTirQagmiU58ju7rPX18vw3nCbA8/35LCCj8gliwkkFXrLtINQmRPg==
+"@polkadot/util-crypto@^0.34.22":
+  version "0.34.22"
+  resolved "https://registry.yarnpkg.com/@polkadot/util-crypto/-/util-crypto-0.34.22.tgz#09ecd871dc910146b1772a8f48cb53d865f6a2bf"
+  integrity sha512-GbEHhwV21t6ZGaJHdhi7K9baKjVXKregqs4bXKu4PMX1fkO7nQKrihIUEtWrtkyGxEcz6MQdDMY/ycovChh+1g==
   dependencies:
     "@babel/runtime" "^7.3.1"
     "@polkadot/schnorrkel-js" "^0.1.2-1"
-    "@polkadot/util" "^0.34.21"
+    "@polkadot/util" "^0.34.22"
     "@types/bip39" "^2.4.2"
+    "@types/secp256k1" "^3.5.0"
     "@types/webassembly-js-api" "^0.0.2"
     "@types/xxhashjs" "^0.2.0"
     bip39 "^2.5.0"
     blakejs "^1.1.0"
     js-sha3 "^0.8.0"
+    secp256k1 "^3.6.2"
     tweetnacl "^1.0.1"
     xxhashjs "^0.2.2"
 
-"@polkadot/util@^0.34.21":
-  version "0.34.21"
-  resolved "https://registry.yarnpkg.com/@polkadot/util/-/util-0.34.21.tgz#5cf793435b4db933deeda7aa6b4a7668e0652c34"
-  integrity sha512-tzSiEIdwht6cXZAw0cYtKJCeItV5THX0q6RfWItmEy/kYuPGrxBeEYY4HQHJqifok4rBay6E912zcelxXvmJ1w==
+"@polkadot/util@^0.34.22":
+  version "0.34.22"
+  resolved "https://registry.yarnpkg.com/@polkadot/util/-/util-0.34.22.tgz#57c132489e60714b9ca84891a902b837f8742dab"
+  integrity sha512-TJmQOmcvRmsW5LW3RHgGxht9oQAaytFrcw8fEZ+y8U/ifOWUsCuyoK7jhJK2P9F0sMq6pDboRlTS368Ee0hEOw==
   dependencies:
     "@babel/runtime" "^7.3.1"
     "@types/bn.js" "^4.11.4"
@@ -1685,6 +1687,13 @@
     "@types/rx-lite-time" "*"
     "@types/rx-lite-virtualtime" "*"
 
+"@types/secp256k1@^3.5.0":
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/@types/secp256k1/-/secp256k1-3.5.0.tgz#0f3baf16b07488c6da2633a63b4160bcf8d0fd5b"
+  integrity sha512-ZE39QhkIaNK6xbKIp1VLN5O36r97LuslLmRnjAcT0sVDxcfvrk3zqp/VnIfmGza7J6jDxR8dIai3hsCxPYglPA==
+  dependencies:
+    "@types/node" "*"
+
 "@types/shelljs@^0.8.0":
   version "0.8.3"
   resolved "https://registry.yarnpkg.com/@types/shelljs/-/shelljs-0.8.3.tgz#f713f312dbae49ab5025290007e71ea32998e9a9"
@@ -2204,6 +2213,13 @@ binary-extensions@^1.0.0:
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.13.0.tgz#9523e001306a32444b907423f1de2164222f6ab1"
   integrity sha512-EgmjVLMn22z7eGGv3kcnHwSnJXmFHjISTY9E/S5lIcTD3Oxw05QTcBLNkJFzcb3cNueUdF/IN4U+d78V0zO8Hw==
 
+bindings@^1.2.1:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.4.0.tgz#909efa49f2ebe07ecd3cb136778f665052040127"
+  integrity sha512-7znEVX22Djn+nYjxCWKDne0RRloa9XfYa84yk3s+HkE3LpDYZmhArYr9O9huBoHY3/oXispx5LorIX7Sl2CgSQ==
+  dependencies:
+    file-uri-to-path "1.0.0"
+
 bindings@~1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.2.1.tgz#14ad6113812d2d37d72e67b4cacb4bb726505f11"
@@ -2220,6 +2236,13 @@ bip39@^2.5.0:
     safe-buffer "^5.0.1"
     unorm "^1.3.3"
 
+bip66@^1.1.3:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/bip66/-/bip66-1.1.5.tgz#01fa8748785ca70955d5011217d1b3139969ca22"
+  integrity sha1-AfqHSHhcpwlV1QESF9GzE5lpyiI=
+  dependencies:
+    safe-buffer "^5.0.1"
+
 bl@^1.0.0:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/bl/-/bl-1.2.2.tgz#a160911717103c07410cef63ef51b397c025af9c"
@@ -2252,7 +2275,7 @@ bluebird@^3.5.0, bluebird@^3.5.1, bluebird@^3.5.3, bluebird@~3.5.0:
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.3.tgz#7d01c6f9616c9a51ab0f8c549a79dfe6ec33efa7"
   integrity sha512-/qKPUQlaW1OyR51WeCPBvRnAlnZFUJkCSG5HzGnuIqhgyJtF+T94lFnn33eiazjRm2LAHVy2guNnaq48X9SJuw==
 
-bn.js@^4.11.8:
+bn.js@^4.11.3, bn.js@^4.11.8, bn.js@^4.4.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
   integrity sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==
@@ -2310,6 +2333,11 @@ braces@^2.3.1, braces@^2.3.2:
     split-string "^3.0.2"
     to-regex "^3.0.1"
 
+brorand@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
+  integrity sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=
+
 browser-process-hrtime@^0.1.2:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/browser-process-hrtime/-/browser-process-hrtime-0.1.3.tgz#616f00faef1df7ec1b5bf9cfe2bdc3170f26c7b4"
@@ -2322,6 +2350,18 @@ browser-resolve@^1.11.3:
   dependencies:
     resolve "1.1.7"
 
+browserify-aes@^1.0.6:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.2.0.tgz#326734642f403dabc3003209853bb70ad428ef48"
+  integrity sha512-+7CHXqGuspUn/Sl5aO7Ea0xWGAtETPXNSAjHo48JfLdPWcMng33Xe4znFvQweqc/uzk5zSOI3H52CYnjCfb5hA==
+  dependencies:
+    buffer-xor "^1.0.3"
+    cipher-base "^1.0.0"
+    create-hash "^1.1.0"
+    evp_bytestokey "^1.0.3"
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
 browserslist@^4.3.4:
   version "4.4.1"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.4.1.tgz#42e828954b6b29a7a53e352277be429478a69062"
@@ -2378,6 +2418,11 @@ buffer-shims@^1.0.0:
   resolved "https://registry.yarnpkg.com/buffer-shims/-/buffer-shims-1.0.0.tgz#9978ce317388c649ad8793028c3477ef044a8b51"
   integrity sha1-mXjOMXOIxkmth5MCjDR37wRKi1E=
 
+buffer-xor@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-1.0.3.tgz#26e61ed1422fb70dd42e6e36729ed51d855fe8d9"
+  integrity sha1-JuYe0UIvtw3ULm42cp7VHYVf6Nk=
+
 builtin-modules@^1.0.0, builtin-modules@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/builtin-modules/-/builtin-modules-1.1.1.tgz#270f076c5a72c02f5b65a47df94c5fe3a278892f"
@@ -2695,7 +2740,7 @@ ci-info@^2.0.0:
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-2.0.0.tgz#67a9e964be31a51e15e5010d58e6f12834002f46"
   integrity sha512-5tK7EtrZ0N+OLFMthtqOj4fI2Jeb88C4CAZPu25LDVUgXJ0A3Js4PMGqrn0JU1W0Mh1/Z8wZzYPxqUrXeBboCQ==
 
-cipher-base@^1.0.1, cipher-base@^1.0.3:
+cipher-base@^1.0.0, cipher-base@^1.0.1, cipher-base@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/cipher-base/-/cipher-base-1.0.4.tgz#8760e4ecc272f4c363532f926d874aae2c1397de"
   integrity sha512-Kkht5ye6ZGmwv40uUDZztayT2ThLQGfnj/T71N/XzeZeo3nf8foyW7zGTsPYkEya3m5f3cAypH+qe7YOrM1U2Q==
@@ -3448,6 +3493,15 @@ dot-prop@^4.1.0, dot-prop@^4.2.0:
   dependencies:
     is-obj "^1.0.0"
 
+drbg.js@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/drbg.js/-/drbg.js-1.0.1.tgz#3e36b6c42b37043823cdbc332d58f31e2445480b"
+  integrity sha1-Pja2xCs3BDgjzbwzLVjzHiRFSAs=
+  dependencies:
+    browserify-aes "^1.0.6"
+    create-hash "^1.1.2"
+    create-hmac "^1.1.4"
+
 duplexer3@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/duplexer3/-/duplexer3-0.1.4.tgz#ee01dd1cac0ed3cbc7fdbea37dc0a8f1ce002ce2"
@@ -3486,6 +3540,19 @@ electron-to-chromium@^1.3.103:
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.113.tgz#b1ccf619df7295aea17bc6951dc689632629e4a9"
   integrity sha512-De+lPAxEcpxvqPTyZAXELNpRZXABRxf+uL/rSykstQhzj/B0l1150G/ExIIxKc16lI89Hgz81J0BHAcbTqK49g==
 
+elliptic@^6.2.3:
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.1.tgz#c2d0b7776911b86722c632c3c06c60f2f819939a"
+  integrity sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==
+  dependencies:
+    bn.js "^4.4.0"
+    brorand "^1.0.1"
+    hash.js "^1.0.0"
+    hmac-drbg "^1.0.0"
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+    minimalistic-crypto-utils "^1.0.0"
+
 encoding@^0.1.11:
   version "0.1.12"
   resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
@@ -3648,6 +3715,14 @@ eventemitter3@^3.1.0:
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.0.tgz#090b4d6cdbd645ed10bf750d4b5407942d7ba163"
   integrity sha512-ivIvhpq/Y0uSjcHDcOIccjmYjGLcP09MFGE7ysAwkAvkXfpZlC985pH2/ui64DKazbTW/4kN3yqozUxlXzI6cA==
 
+evp_bytestokey@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz#7fcbdb198dc71959432efe13842684e0525acb02"
+  integrity sha512-/f2Go4TognH/KvCISP7OUsHn85hT9nUkxxA9BEWxFn+Oj9o8ZNLm/40hdlgSLyuOimsrTKLUMEorQexp/aPQeA==
+  dependencies:
+    md5.js "^1.3.4"
+    safe-buffer "^5.1.1"
+
 exec-sh@^0.2.0:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/exec-sh/-/exec-sh-0.2.2.tgz#2a5e7ffcbd7d0ba2755bdecb16e5a427dfbdec36"
@@ -3848,6 +3923,11 @@ figures@^2.0.0:
   dependencies:
     escape-string-regexp "^1.0.5"
 
+file-uri-to-path@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz#553a7b8446ff6f684359c445f1e37a05dacc33dd"
+  integrity sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==
+
 filename-regex@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/filename-regex/-/filename-regex-2.0.1.tgz#c1c4b9bee3e09725ddb106b75c1e301fe2f18b26"
@@ -4581,6 +4661,14 @@ hash-base@^3.0.0:
     inherits "^2.0.1"
     safe-buffer "^5.0.1"
 
+hash.js@^1.0.0, hash.js@^1.0.3:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
+  integrity sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==
+  dependencies:
+    inherits "^2.0.3"
+    minimalistic-assert "^1.0.1"
+
 hawk@~3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/hawk/-/hawk-3.1.3.tgz#078444bd7c1640b0fe540d2c9b73d59678e8e1c4"
@@ -4601,6 +4689,15 @@ highlight.js@^9.13.1:
   resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.14.2.tgz#efbfb22dc701406e4da406056ef8c2b70ebe5b26"
   integrity sha512-Nc6YNECYpxyJABGYJAyw7dBAYbXEuIzwzkqoJnwbc1nIpCiN+3ioYf0XrBnLiyyG0JLuJhpPtt2iTSbXiKLoyA==
 
+hmac-drbg@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
+  integrity sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=
+  dependencies:
+    hash.js "^1.0.3"
+    minimalistic-assert "^1.0.0"
+    minimalistic-crypto-utils "^1.0.1"
+
 hoek@2.x.x:
   version "2.16.3"
   resolved "https://registry.yarnpkg.com/hoek/-/hoek-2.16.3.tgz#20bb7403d3cea398e91dc4710a8ff1b8274a25ed"
@@ -6342,6 +6439,16 @@ mimic-fn@^1.0.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
   integrity sha512-jf84uxzwiuiIVKiOLpfYk7N46TSy8ubTonmneY9vrpHNAnp0QBt2BxWV9dO3/j+BoVAb+a5G6YDPW3M5HOdMWQ==
 
+minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
+  integrity sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==
+
+minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz#f6c00c1c0b082246e5c4d99dfb8c7c083b2b582a"
+  integrity sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=
+
 minimatch@^3.0.0, minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4, minimatch@~3.0.3:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
@@ -6509,7 +6616,7 @@ mute-stream@~0.0.4:
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.8.tgz#1630c42b2251ff81e2a283de96a5497ea92e5e0d"
   integrity sha512-nnbWWOkoWyUsTjKrhgD0dcz22mdkSnpYqbEjIm2nhwhuxlSkpywJmBo8h0ZqJdkp73mb90SssHkN4rsRaBAfAA==
 
-nan@^2.11.0, nan@^2.9.2:
+nan@^2.11.0, nan@^2.2.1, nan@^2.9.2:
   version "2.12.1"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.12.1.tgz#7b1aa193e9aa86057e3c7bbd0ac448e770925552"
   integrity sha512-JY7V6lRkStKcKTvHO5NVSQRv+RV+FIL5pvDoLiAtSL9pKlC5x9PKQcZDsq7m4FO4d57mkhC6Z+QhAh3Jdk5JFw==
@@ -8453,6 +8560,20 @@ sax@^1.2.1, sax@^1.2.4:
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
   integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
 
+secp256k1@^3.6.2:
+  version "3.6.2"
+  resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.6.2.tgz#da835061c833c74a12f75c73d2ec2e980f00dc1f"
+  integrity sha512-90nYt7yb0LmI4A2jJs1grglkTAXrBwxYAjP9bpeKjvJKOjG2fOeH/YI/lchDMIvjrOasd5QXwvV2jwN168xNng==
+  dependencies:
+    bindings "^1.2.1"
+    bip66 "^1.1.3"
+    bn.js "^4.11.3"
+    create-hash "^1.1.2"
+    drbg.js "^1.0.1"
+    elliptic "^6.2.3"
+    nan "^2.2.1"
+    safe-buffer "^5.1.0"
+
 semver-diff@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/semver-diff/-/semver-diff-2.1.0.tgz#4bbb8437c8d37e4b0cf1a68fd726ec6d645d6d36"