diff --git a/yarn.lock b/yarn.lock
index 5343154..581f391 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -124,9 +124,9 @@ acorn-walk@^6.1.1:
   integrity sha512-OtUw6JUTgxA2QoqqmrmQ7F2NYqiBPi/L2jqHyFtllhOUvXYQXf0Z1CYUinIfyT4bTCGmrA7gX9FvHA81uzCoVw==
 
 acorn@^6.0.2, acorn@^6.1.1:
-  version "6.1.1"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.1.1.tgz#7d25ae05bb8ad1f9b699108e1094ecd7884adc1f"
-  integrity sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
+  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
 
 addressparser@1.0.1:
   version "1.0.1"
@@ -409,6 +409,18 @@ balanced-match@^1.0.0:
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
   integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
 
+base-x@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/base-x/-/base-x-1.1.0.tgz#42d3d717474f9ea02207f6d1aa1f426913eeb7ac"
+  integrity sha1-QtPXF0dPnqAiB/bRqh9CaRPut6w=
+
+base-x@^3.0.2:
+  version "3.0.8"
+  resolved "https://registry.yarnpkg.com/base-x/-/base-x-3.0.8.tgz#1e1106c2537f0162e8b52474a557ebb09000018d"
+  integrity sha512-Rl/1AWP4J/zRrk54hhlxH4drNxPJXYUaKffODVI53/dAsV4t9fBxyxYKAVPU1XBHxYwOWP9h9H0hM2MVw4YfJA==
+  dependencies:
+    safe-buffer "^5.0.1"
+
 base-x@^3.0.4:
   version "3.0.5"
   resolved "https://registry.yarnpkg.com/base-x/-/base-x-3.0.5.tgz#d3ada59afed05b921ab581ec3112e6444ba0795a"
@@ -416,6 +428,13 @@ base-x@^3.0.4:
   dependencies:
     safe-buffer "^5.0.1"
 
+base58check@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/base58check/-/base58check-2.0.0.tgz#8046652d14bc87f063bd16be94a39134d3b61173"
+  integrity sha1-gEZlLRS8h/BjvRa+lKORNNO2EXM=
+  dependencies:
+    bs58 "^3.0.0"
+
 base64-arraybuffer@0.1.5:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
@@ -444,6 +463,14 @@ base@^0.11.1:
     mixin-deep "^1.2.0"
     pascalcase "^0.1.1"
 
+bchaddrjs-slp@^0.2.8:
+  version "0.2.8"
+  resolved "https://registry.yarnpkg.com/bchaddrjs-slp/-/bchaddrjs-slp-0.2.8.tgz#ddad236daa0f5a10480f57d7ad082b54576ef153"
+  integrity sha512-Is4NQG0xhrmW8ml40n8IjQzYlg1gMqst2RkF20SWjuhiSA8VDx1F53krthFqZFp5hpB+Ig/NPx6NX4VEH9W32Q==
+  dependencies:
+    bs58check "^2.1.2"
+    cashaddrjs-slp "^0.2.12"
+
 bcrypt-pbkdf@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz#a4301d389b6a43f9b67ff3ca11a3f6637e360e9e"
@@ -458,6 +485,11 @@ better-assert@~1.0.0:
   dependencies:
     callsite "1.0.0"
 
+big-integer@^1.6.34:
+  version "1.6.48"
+  resolved "https://registry.yarnpkg.com/big-integer/-/big-integer-1.6.48.tgz#8fd88bd1632cba4a1c8c3e3d7159f08bb95b4b9e"
+  integrity sha512-j51egjPa7/i+RdiRuJbPdJ2FIUYYPhvYLjzoYbcMMm62ooO6F94fETG4MTs46zPAF9Brs04OajboA/qTGuz78w==
+
 binary-extensions@^1.0.0:
   version "1.13.1"
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.13.1.tgz#598afe54755b2868a5330d2aff9d4ebb53209b65"
@@ -690,6 +722,29 @@ browserify@^15.1.0:
     vm-browserify "~0.0.1"
     xtend "^4.0.0"
 
+bs58@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/bs58/-/bs58-3.1.0.tgz#d4c26388bf4804cac714141b1945aa47e5eb248e"
+  integrity sha1-1MJjiL9IBMrHFBQbGUWqR+XrJI4=
+  dependencies:
+    base-x "^1.1.0"
+
+bs58@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/bs58/-/bs58-4.0.1.tgz#be161e76c354f6f788ae4071f63f34e8c4f0a42a"
+  integrity sha1-vhYedsNU9veIrkBx9j806MTwpCo=
+  dependencies:
+    base-x "^3.0.2"
+
+bs58check@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/bs58check/-/bs58check-2.1.2.tgz#53b018291228d82a5aa08e7d796fdafda54aebfc"
+  integrity sha512-0TS1jicxdU09dwJMNZtVAfzPi6Q6QeN0pM1Fkzrjn+XYHvzMKPU3pHVpva+769iNVSfIYWf7LJ6WR+BuuMf8cA==
+  dependencies:
+    bs58 "^4.0.0"
+    create-hash "^1.1.0"
+    safe-buffer "^5.1.2"
+
 buffer-alloc-unsafe@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz#bd7dc26ae2972d0eda253be061dba992349c19f0"
@@ -754,6 +809,14 @@ bytes@3.1.0:
   resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
   integrity sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==
 
+c32check@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/c32check/-/c32check-1.0.1.tgz#857dcd60de12f515d582dc70e85b9fb9666cbf32"
+  integrity sha512-0e1+39uLNLyRm9sNoPUCg38LOELUqiBDZXD9kpUUAFNBq21gY3VaNImp1rfznQOsqK27ArvQ2JaZmfokZznqHg==
+  dependencies:
+    base58check "^2.0.0"
+    ripemd160 "^2.0.1"
+
 cache-base@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
@@ -801,6 +864,13 @@ caseless@~0.12.0:
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
   integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
 
+cashaddrjs-slp@^0.2.12:
+  version "0.2.12"
+  resolved "https://registry.yarnpkg.com/cashaddrjs-slp/-/cashaddrjs-slp-0.2.12.tgz#30eda56cfc3ad4a949911258a0356459f45879d4"
+  integrity sha512-n2TTIuW6vZZxYvjvsUAA+wOM0Zkj+3RRKUtDC1XSu4Ic4XVr0yFJkl1bzQkHWda7nkVT51sxjZneygz7D0SyrQ==
+  dependencies:
+    big-integer "^1.6.34"
+
 cbor-js@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/cbor-js/-/cbor-js-0.1.0.tgz#c80ce6120f387e8faa74370dfda21d965b8fc7f9"
@@ -2739,6 +2809,11 @@ isstream@~0.1.2:
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
   integrity sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=
 
+js-sha512@^0.8.0:
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/js-sha512/-/js-sha512-0.8.0.tgz#dd22db8d02756faccf19f218e3ed61ec8249f7d4"
+  integrity sha512-PWsmefG6Jkodqt+ePTvBZCSMFgN7Clckjd0O7su3I0+BW2QWUTJNzjktHsztGLhncP2h8mcF9V9Y2Ha59pAViQ==
+
 "js-tokens@^3.0.0 || ^4.0.0":
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
@@ -4211,6 +4286,11 @@ ret@~0.1.10:
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
   integrity sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==
 
+rfc4648@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/rfc4648/-/rfc4648-1.3.0.tgz#2a69c76f05bc0e388feab933672de9b492af95f1"
+  integrity sha512-x36K12jOflpm1V8QjPq3I+pt7Z1xzeZIjiC8J2Oxd7bE1efTrOG241DTYVJByP/SxR9jl1t7iZqYxDX864jgBQ==
+
 rimraf@^2.6.0, rimraf@^2.6.1, rimraf@~2.6.2:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.3.tgz#b2d104fe0d8fb27cf9e0a1cda8262dd3833c6cab"