diff --git a/app/redisCache.js b/app/redisCache.js
index 3efe6f6..a47d700 100644
--- a/app/redisCache.js
+++ b/app/redisCache.js
@@ -1,5 +1,4 @@
 var redis = require("redis");
-var bluebird = require("bluebird");
 
 var config = require("./config.js");
 var utils = require("./utils.js");
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 063bfda..100691f 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -96,15 +96,14 @@
       }
     },
     "ansi-regex": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+      "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg=="
     },
     "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,
       "requires": {
         "color-convert": "^1.9.0"
       }
@@ -169,12 +168,9 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "async": {
-      "version": "2.6.2",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.2.tgz",
-      "integrity": "sha512-H1qVYh1MYhEEFLsP97cVKqCGo7KfCyTt6uEWqsTBr9SO84oK9Uwbyd/yCW+6rKJLHksBNUVWZDAjfS+Ccx0Bbg==",
-      "requires": {
-        "lodash": "^4.17.11"
-      }
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.1.0.tgz",
+      "integrity": "sha512-4vx/aaY6j/j3Lw3fbCHNWP0pPaTCew3F6F3hYyl/tHs/ndmV1q7NW9T5yuJ2XAGwdQrP+6Wu20x06U4APo/iQQ=="
     },
     "asynckit": {
       "version": "0.4.0",
@@ -222,13 +218,18 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
     "base-x": {
-      "version": "3.0.5",
-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.5.tgz",
-      "integrity": "sha512-C3picSgzPSLE+jW3tcBzJoGwitOtazb5B+5YmAxZm2ybmTi9LNgAtDO/jjVEBZwHoXmDBZ9m/IELj3elJVRBcA==",
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.7.tgz",
+      "integrity": "sha512-zAKJGuQPihXW22fkrfOclUUZXM2g92z5GzlSMHxhO6r6Qj+Nm0ccaGNBzDZojzwOMkpjAv4J0fOv1U4go+a4iw==",
       "requires": {
         "safe-buffer": "^5.0.1"
       }
     },
+    "base64-js": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
+      "integrity": "sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g=="
+    },
     "basic-auth": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/basic-auth/-/basic-auth-2.0.1.tgz",
@@ -263,16 +264,21 @@
         "file-uri-to-path": "1.0.0"
       }
     },
+    "bip174": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/bip174/-/bip174-1.0.1.tgz",
+      "integrity": "sha512-Mq2aFs1TdMfxBpYPg7uzjhsiXbAtoVq44TNjEWtvuZBiBgc3m7+n55orYMtTAxdg7jWbL4DtH0MKocJER4xERQ=="
+    },
     "bip32": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/bip32/-/bip32-2.0.2.tgz",
-      "integrity": "sha512-Wws0wBYp+KViCTJLLalmOUhefd1puJslme6ks1HPRuEEXGA28HNRVcx6aIGnH0VNYr/NqoUMYf/QakCjbXcElQ==",
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/bip32/-/bip32-2.0.4.tgz",
+      "integrity": "sha512-ioPytarPDIrWckWMuK4RNUtvwhvWEc2fvuhnO0WEwu732k5OLjUXv4rXi2c/KJHw9ZMNQMkYRJrBw81RujShGQ==",
       "requires": {
         "@types/node": "10.12.18",
         "bs58check": "^2.1.1",
         "create-hash": "^1.2.0",
         "create-hmac": "^1.1.7",
-        "tiny-secp256k1": "^1.0.0",
+        "tiny-secp256k1": "^1.1.0",
         "typeforce": "^1.11.5",
         "wif": "^2.0.6"
       }
@@ -286,9 +292,9 @@
       }
     },
     "bitcoin-core": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/bitcoin-core/-/bitcoin-core-2.0.0.tgz",
-      "integrity": "sha512-I6I7ejzbXfyMtR5/z0BhfjTeN8PMQGD+1B1rpu6IoLcwqoybaSa+P4zYnja/p2xdqjdctmgbOtAaCaaqyVCycQ==",
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/bitcoin-core/-/bitcoin-core-2.3.0.tgz",
+      "integrity": "sha512-SMbw2kFu09iBajicODSE4pn/K0tOibWyqct71TlzR8cYUBk+u7rkhqGY7US2iYz0HmP851IW7F7eXfXvz09yXA==",
       "requires": {
         "@uphold/request-logger": "^2.0.0",
         "bluebird": "^3.4.1",
@@ -306,13 +312,14 @@
       "integrity": "sha512-pef6gxZFztEhaE9RY9HmWVmiIHqCb2OyS4HPKkpc6CIiiOa3Qmuoylxc5P2EkU3w+5eTSifI9SEZC88idAIGow=="
     },
     "bitcoinjs-lib": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/bitcoinjs-lib/-/bitcoinjs-lib-5.0.3.tgz",
-      "integrity": "sha512-uc1htf5acG5vcwyhOnES1MFIe21fNn+0VnJLNAcw1/uAQGDF0SNfzEA8SUwnMZ4J26zHiAmk6hVnlVl8yYOTPA==",
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/bitcoinjs-lib/-/bitcoinjs-lib-5.1.6.tgz",
+      "integrity": "sha512-NgvnA8XXUuzpuBnVs1plzZvVOYsuont4KPzaGcVIwjktYQbCk1hUkXnt4wujIOBscNsXuu+plVbPYvtMosZI/w==",
       "requires": {
         "@types/node": "10.12.18",
         "bech32": "^1.1.2",
-        "bip32": "^2.0.0",
+        "bip174": "^1.0.1",
+        "bip32": "^2.0.4",
         "bip66": "^1.1.0",
         "bitcoin-ops": "^1.4.0",
         "bs58check": "^2.0.0",
@@ -321,16 +328,16 @@
         "merkle-lib": "^2.0.10",
         "pushdata-bitcoin": "^1.0.1",
         "randombytes": "^2.0.1",
-        "tiny-secp256k1": "^1.0.0",
+        "tiny-secp256k1": "^1.1.1",
         "typeforce": "^1.11.3",
         "varuint-bitcoin": "^1.0.4",
         "wif": "^2.0.1"
       }
     },
     "bluebird": {
-      "version": "3.5.1",
-      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
-      "integrity": "sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA=="
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz",
+      "integrity": "sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg=="
     },
     "bn.js": {
       "version": "4.11.8",
@@ -440,6 +447,39 @@
         "safe-buffer": "^5.1.2"
       }
     },
+    "buffer": {
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.4.3.tgz",
+      "integrity": "sha512-zvj65TkFeIt3i6aj5bIvJDzjjQQGs4o/sNoezg1F1kYap9Nu2jcUdpwzRSJTHMMzG0H7bZkn4rNQpImhuxWX2A==",
+      "requires": {
+        "base64-js": "^1.0.2",
+        "ieee754": "^1.1.4"
+      }
+    },
+    "buffer-alloc": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/buffer-alloc/-/buffer-alloc-1.2.0.tgz",
+      "integrity": "sha512-CFsHQgjtW1UChdXgbyJGtnm+O/uLQeZdtbDo8mfUgYXCHSM1wgrVxXm6bSyrUuErEb+4sYVGCzASBRot7zyrow==",
+      "requires": {
+        "buffer-alloc-unsafe": "^1.1.0",
+        "buffer-fill": "^1.0.0"
+      }
+    },
+    "buffer-alloc-unsafe": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz",
+      "integrity": "sha512-TEM2iMIEQdJ2yjPJoSIsldnleVaAk1oW3DBVUykyOLsEsFmEc9kn+SFFPz+gl54KQNxlDnAwCXosOS9Okx2xAg=="
+    },
+    "buffer-fill": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
+      "integrity": "sha1-+PeLdniYiO858gXNY39o5wISKyw="
+    },
+    "buffer-from": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A=="
+    },
     "builtin-modules": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
@@ -483,14 +523,6 @@
         }
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-    "can-promise": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/can-promise/-/can-promise-0.0.1.tgz",
-      "integrity": "sha512-gzVrHyyrvgt0YpDm7pn04MQt8gjh0ZAhN4ZDyCRtGl6YnuuK6b4aiUTD7G52r9l4YNmxfTtEscb92vxtAlL6XQ==",
-      "requires": {
-        "window-or-global": "^1.0.1"
-      }
-    },
     "caseless": {
       "version": "0.12.0",
       "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
@@ -557,16 +589,10 @@
       "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=",
       "dev": true
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-    "code-point-at": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
-    },
     "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,
       "requires": {
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       }
@@ -574,8 +600,7 @@
     "color-name": {
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       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
-      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
-      "dev": true
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
     },
     "combined-stream": {
       "version": "1.0.7",
@@ -634,9 +659,9 @@
       "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
     },
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-      "version": "2.6.5",
-      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
-      "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A=="
+      "version": "2.6.10",
+      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.10.tgz",
+      "integrity": "sha512-I39t74+4t+zau64EN1fE5v2W31Adtc/REhzWN+gWRRXg6WH5qAsZm62DHpQ1+Yhe4047T55jvzz7MUqF/dBBlA=="
     },
     "core-util-is": {
       "version": "1.0.2",
@@ -668,18 +693,6 @@
         "sha.js": "^2.4.8"
       }
     },
-    "cross-spawn": {
-      "version": "6.0.5",
-      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
-      "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
-      "requires": {
-        "nice-try": "^1.0.4",
-        "path-key": "^2.0.1",
-        "semver": "^5.5.0",
-        "shebang-command": "^1.2.0",
-        "which": "^1.2.9"
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     "crypto-js": {
       "version": "3.1.9-1",
       "resolved": "https://registry.npmjs.org/crypto-js/-/crypto-js-3.1.9-1.tgz",
@@ -797,9 +810,9 @@
       }
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     "decimal.js": {
-      "version": "10.1.1",
-      "resolved": "https://registry.npmjs.org/decimal.js/-/decimal.js-10.1.1.tgz",
-      "integrity": "sha512-vEEgyk1fWVEnv7lPjkNedAIjzxQDue5Iw4FeX4UkNUDSVyD/jZTD0Bw2kAO7k6iyyJRAhM9oxxI0D1ET6k0Mmg=="
+      "version": "10.2.0",
+      "resolved": "https://registry.npmjs.org/decimal.js/-/decimal.js-10.2.0.tgz",
+      "integrity": "sha512-vDPw+rDgn3bZe1+F/pyEwb1oMG2XTlRVgAa6B4KccTEpYgF8w6eQllVbQcfIJnZyvzFtFpxnpGtx8dd7DJp/Rw=="
     },
     "define-properties": {
       "version": "1.1.3",
@@ -836,9 +849,9 @@
       "integrity": "sha1-6oCxBqh1OHdOijpKWv4pPeSJ4Kk="
     },
     "dotenv": {
-      "version": "8.1.0",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.1.0.tgz",
-      "integrity": "sha512-GUE3gqcDCaMltj2++g6bRQ5rBJWtkWTmqmD0fo1RnnMuUqHNCt2oTPeDnS9n6fKYvlhn7AeBkb38lymBtWBQdA=="
+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
+      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
     },
     "double-ended-queue": {
       "version": "2.1.0-0",
@@ -846,12 +859,12 @@
       "integrity": "sha1-ED01J/0xUo9AGIEwyEHv3XgmTlw="
     },
     "dtrace-provider": {
-      "version": "0.8.7",
-      "resolved": "https://registry.npmjs.org/dtrace-provider/-/dtrace-provider-0.8.7.tgz",
-      "integrity": "sha1-3JObTT4GIM/gwc2APQ0tftBP/QQ=",
+      "version": "0.8.8",
+      "resolved": "https://registry.npmjs.org/dtrace-provider/-/dtrace-provider-0.8.8.tgz",
+      "integrity": "sha512-b7Z7cNtHPhH9EJhNNbbeqTcXB8LGFFZhq1PGgEvpeHlzd36bhbdTWoE/Ba/YguqpBSlAPKnARWhVlhunCMwfxg==",
       "optional": true,
       "requires": {
-        "nan": "^2.10.0"
+        "nan": "^2.14.0"
       }
     },
     "ecc-jsbn": {
@@ -873,9 +886,9 @@
       "from": "github:chaintools/node-electrum-client#43a999036f9c5"
     },
     "elliptic": {
-      "version": "6.4.1",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
-      "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
+      "version": "6.5.2",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.2.tgz",
+      "integrity": "sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==",
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         "brorand": "^1.0.1",
@@ -886,19 +899,16 @@
         "minimalistic-crypto-utils": "^1.0.0"
       }
     },
+    "emoji-regex": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
+      "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA=="
+    },
     "encodeurl": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
       "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
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-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
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       "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.1.tgz",
@@ -959,29 +969,15 @@
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-      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
-      "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs="
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.3.tgz",
+      "integrity": "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g=="
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       "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
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-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/execa/-/execa-1.0.0.tgz",
-      "integrity": "sha512-adbxcyWV46qiHyvSp50TKt05tB4tK3HcmF7/nxfAdhnox83seTDbwnaqKO4sXRy7roHAIFqJP/Rw/AuEbX61LA==",
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-        "npm-run-path": "^2.0.0",
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@@ -1045,20 +1041,25 @@
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+      "version": "13.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
+      "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
       "requires": {
         "camelcase": "^5.0.0",
         "decamelize": "^1.2.0"
diff --git a/package.json b/package.json
index 6d8ec4e..3237101 100644
--- a/package.json
+++ b/package.json
@@ -20,33 +20,33 @@
     "url": "git+https://github.com/janoside/btc-rpc-explorer.git"
   },
   "dependencies": {
-    "async": "2.6.2",
+    "async": "^3.1.0",
     "basic-auth": "^2.0.1",
-    "bitcoin-core": "2.0.0",
-    "bitcoinjs-lib": "5.0.3",
+    "bitcoin-core": "^2.3.0",
+    "bitcoinjs-lib": "^5.1.6",
     "body-parser": "~1.19.0",
     "cookie-parser": "^1.4.4",
     "crypto-js": "3.1.9-1",
     "csurf": "^1.10.0",
     "debug": "~4.1.1",
-    "decimal.js": "10.1.1",
-    "dotenv": "^8.1.0",
+    "decimal.js": "^10.2.0",
+    "dotenv": "^8.2.0",
     "electrum-client": "github:chaintools/node-electrum-client#43a999036f9c5",
     "express": "^4.17.1",
-    "express-session": "1.16.1",
+    "express-session": "^1.17.0",
     "jstransformer-markdown-it": "^2.1.0",
-    "lru-cache": "5.1.1",
-    "marked": "0.7.0",
+    "lru-cache": "^5.1.1",
+    "marked": "^0.7.0",
     "meow": "^5.0.0",
     "moment": "^2.24.0",
-    "moment-duration-format": "2.2.2",
+    "moment-duration-format": "^2.3.2",
     "morgan": "^1.9.1",
-    "pug": "2.0.3",
-    "qrcode": "1.3.3",
-    "redis": "2.8.0",
-    "request": "2.88.0",
+    "pug": "^2.0.4",
+    "qrcode": "^1.4.4",
+    "redis": "^2.8.0",
+    "request": "^2.88.0",
     "serve-favicon": "^2.5.0",
-    "simple-git": "1.112.0"
+    "simple-git": "^1.126.0"
   },
   "devDependencies": {
     "less": "3.9.0",