diff --git a/maintainer/Pipfile.lock b/maintainer/Pipfile.lock
index 917a7238..1dea44f4 100644
--- a/maintainer/Pipfile.lock
+++ b/maintainer/Pipfile.lock
@@ -64,14 +64,16 @@
                 "sha256:0c3c816a028d47f659d6ff5c745cb2acf1f966da1fe5c19c77a70282b25f4c5f",
                 "sha256:4291ca197d287d274d0b6cb5d6f8f8f82d434ed288f962539ff18cc9012f9ea3"
             ],
+            "markers": "python_full_version >= '3.5.3'",
             "version": "==3.0.1"
         },
         "attrs": {
             "hashes": [
-                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
-                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
+                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
+                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
-            "version": "==20.3.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==21.2.0"
         },
         "bitcoin-spv-py": {
             "hashes": [
@@ -84,14 +86,23 @@
         "cffi": {
             "hashes": [
                 "sha256:005a36f41773e148deac64b08f233873a4d0c18b053d37da83f6af4d9087b813",
+                "sha256:04c468b622ed31d408fea2346bec5bbffba2cc44226302a0de1ade9f5ea3d373",
+                "sha256:06d7cd1abac2ffd92e65c0609661866709b4b2d82dd15f611e602b9b188b0b69",
+                "sha256:06db6321b7a68b2bd6df96d08a5adadc1fa0e8f419226e25b2a5fbf6ccc7350f",
                 "sha256:0857f0ae312d855239a55c81ef453ee8fd24136eaba8e87a2eceba644c0d4c06",
+                "sha256:0f861a89e0043afec2a51fd177a567005847973be86f709bbb044d7f42fc4e05",
                 "sha256:1071534bbbf8cbb31b498d5d9db0f274f2f7a865adca4ae429e147ba40f73dea",
                 "sha256:158d0d15119b4b7ff6b926536763dc0714313aa59e320ddf787502c70c4d4bee",
+                "sha256:1bf1ac1984eaa7675ca8d5745a8cb87ef7abecb5592178406e55858d411eadc0",
                 "sha256:1f436816fc868b098b0d63b8920de7d208c90a67212546d02f84fe78a9c26396",
+                "sha256:24a570cd11895b60829e941f2613a4f79df1a27344cbbb82164ef2e0116f09c7",
+                "sha256:24ec4ff2c5c0c8f9c6b87d5bb53555bf267e1e6f70e52e5a9740d32861d36b6f",
                 "sha256:2894f2df484ff56d717bead0a5c2abb6b9d2bf26d6960c4604d5c48bbc30ee73",
                 "sha256:29314480e958fd8aab22e4a58b355b629c59bf5f2ac2492b61e3dc06d8c7a315",
+                "sha256:293e7ea41280cb28c6fcaaa0b1aa1f533b8ce060b9e701d78511e1e6c4a1de76",
                 "sha256:34eff4b97f3d982fb93e2831e6750127d1355a923ebaeeb565407b3d2f8d41a1",
                 "sha256:35f27e6eb43380fa080dccf676dece30bef72e4a67617ffda586641cd4508d49",
+                "sha256:3c3f39fa737542161d8b0d680df2ec249334cd70a8f420f71c9304bd83c3cbed",
                 "sha256:3d3dd4c9e559eb172ecf00a2a7517e97d1e96de2a5e610bd9b68cea3925b4892",
                 "sha256:43e0b9d9e2c9e5d152946b9c5fe062c151614b262fda2e7b201204de0b99e482",
                 "sha256:48e1c69bbacfc3d932221851b39d49e81567a4d4aac3b21258d9c24578280058",
@@ -99,6 +110,7 @@
                 "sha256:58e3f59d583d413809d60779492342801d6e82fefb89c86a38e040c16883be53",
                 "sha256:5de7970188bb46b7bf9858eb6890aad302577a5f6f75091fd7cdd3ef13ef3045",
                 "sha256:65fa59693c62cf06e45ddbb822165394a288edce9e276647f0046e1ec26920f3",
+                "sha256:681d07b0d1e3c462dd15585ef5e33cb021321588bebd910124ef4f4fb71aef55",
                 "sha256:69e395c24fc60aad6bb4fa7e583698ea6cc684648e1ffb7fe85e3c1ca131a7d5",
                 "sha256:6c97d7350133666fbb5cf4abdc1178c812cb205dc6f41d174a7b0f18fb93337e",
                 "sha256:6e4714cc64f474e4d6e37cfff31a814b509a35cb17de4fb1999907575684479c",
@@ -116,8 +128,10 @@
                 "sha256:b85eb46a81787c50650f2392b9b4ef23e1f126313b9e0e9013b35c15e4288e2e",
                 "sha256:bb89f306e5da99f4d922728ddcd6f7fcebb3241fc40edebcb7284d7514741991",
                 "sha256:cbde590d4faaa07c72bf979734738f328d239913ba3e043b1e98fe9a39f8b2b6",
+                "sha256:cc5a8e069b9ebfa22e26d0e6b97d6f9781302fe7f4f2b8776c3e1daea35f1adc",
                 "sha256:cd2868886d547469123fadc46eac7ea5253ea7fcb139f12e1dfc2bbd406427d1",
                 "sha256:d42b11d692e11b6634f7613ad8df5d6d5f8875f5d48939520d351007b3c13406",
+                "sha256:df5052c5d867c1ea0b311fb7c3cd28b19df469c056f7fdcfe88c7473aa63e333",
                 "sha256:f2d45f97ab6bb54753eab54fffe75aaf3de4ff2341c9daee1987ee1837636f1d",
                 "sha256:fd78e5fee591709f32ef6edb9a015b4aa1a5022598e36227500c8f4e02328d9c"
             ],
@@ -142,6 +156,7 @@
                 "sha256:a3bc7f1c12eb086525999de7f83b9e7ad39740b31f0f4eccb17377ed70de24dd",
                 "sha256:aee46d9c43b98ac6d4ddf957cf75d4d0a5174ee814cc6b53dd6134dcedb459bf"
             ],
+            "markers": "python_version >= '3.5' and python_version < '4'",
             "version": "==0.3.1"
         },
         "eth-keys": {
@@ -156,6 +171,7 @@
                 "sha256:1140c7592321dbf10d6663c46f7e43eb0e6410b011b03f14b3df3eb1f76aa9bb",
                 "sha256:97ba0f83da7cf1d3668f6ed54983f21168076c552762bf5e06d4a20921877f3f"
             ],
+            "markers": "python_version >= '3.5' and python_version < '4'",
             "version": "==2.2.2"
         },
         "eth-utils": {
@@ -163,14 +179,16 @@
                 "sha256:74240a8c6f652d085ed3c85f5f1654203d2f10ff9062f83b3bad0a12ff321c7a",
                 "sha256:bf82762a46978714190b0370265a7148c954d3f0adaa31c6f085ea375e4c61af"
             ],
+            "markers": "python_version >= '3.5' and python_version < '4' and python_full_version != '3.5.2'",
             "version": "==1.10.0"
         },
         "idna": {
             "hashes": [
-                "sha256:5205d03e7bcbb919cc9c19885f9920d622ca52448306f2377daede5cf3faac16",
-                "sha256:c5b02147e01ea9920e6b0a3f1f7bb833612d507592c837a6c49552768f4054e1"
+                "sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a",
+                "sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3"
             ],
-            "version": "==3.1"
+            "markers": "python_version >= '3.5'",
+            "version": "==3.2"
         },
         "multidict": {
             "hashes": [
@@ -212,6 +230,7 @@
                 "sha256:f21756997ad8ef815d8ef3d34edd98804ab5ea337feedcd62fb52d22bf531281",
                 "sha256:fc13a9524bc18b6fb6e0dbec3533ba0496bbed167c56d0aabefd965584557d80"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==5.1.0"
         },
         "mypy-extensions": {
@@ -227,6 +246,7 @@
                 "sha256:2d475327684562c3a96cc71adf7dc8c4f0565175cf86b6d7a404ff4c771f15f0",
                 "sha256:7582ad22678f0fcd81102833f60ef8d0e57288b6b5fb00323d101be910e35705"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.20"
         },
         "pycryptodomex": {
@@ -262,6 +282,7 @@
                 "sha256:f933ecf4cb736c7af60a6a533db2bf569717f2318b265f92907acff1db43bc34",
                 "sha256:fc9c55dc1ed57db76595f2d19a479fc1c3a1be2c9da8de798a93d286c5f65f38"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
             "version": "==3.10.1"
         },
         "python-dotenv": {
@@ -324,53 +345,67 @@
         },
         "six": {
             "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "version": "==1.15.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.16.0"
         },
         "toolz": {
             "hashes": [
                 "sha256:1bc473acbf1a1db4e72a1ce587be347450e8f08324908b8a266b486f408f04d5",
                 "sha256:c7a47921f07822fe534fb1c01c9931ab335a4390c782bd28c6bcc7c2f71f3fbf"
             ],
+            "markers": "python_version >= '3.5'",
             "version": "==0.11.1"
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918",
-                "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c",
-                "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"
+                "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497",
+                "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342",
+                "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"
             ],
             "markers": "python_version < '3.8'",
-            "version": "==3.7.4.3"
+            "version": "==3.10.0.0"
         },
         "websockets": {
             "hashes": [
-                "sha256:0e4fb4de42701340bd2353bb2eee45314651caa6ccee80dbd5f5d5978888fed5",
-                "sha256:1d3f1bf059d04a4e0eb4985a887d49195e15ebabc42364f4eb564b1d065793f5",
-                "sha256:20891f0dddade307ffddf593c733a3fdb6b83e6f9eef85908113e628fa5a8308",
-                "sha256:295359a2cc78736737dd88c343cd0747546b2174b5e1adc223824bcaf3e164cb",
-                "sha256:2db62a9142e88535038a6bcfea70ef9447696ea77891aebb730a333a51ed559a",
-                "sha256:3762791ab8b38948f0c4d281c8b2ddfa99b7e510e46bd8dfa942a5fff621068c",
-                "sha256:3db87421956f1b0779a7564915875ba774295cc86e81bc671631379371af1170",
-                "sha256:3ef56fcc7b1ff90de46ccd5a687bbd13a3180132268c4254fc0fa44ecf4fc422",
-                "sha256:4f9f7d28ce1d8f1295717c2c25b732c2bc0645db3215cf757551c392177d7cb8",
-                "sha256:5c01fd846263a75bc8a2b9542606927cfad57e7282965d96b93c387622487485",
-                "sha256:5c65d2da8c6bce0fca2528f69f44b2f977e06954c8512a952222cea50dad430f",
-                "sha256:751a556205d8245ff94aeef23546a1113b1dd4f6e4d102ded66c39b99c2ce6c8",
-                "sha256:7ff46d441db78241f4c6c27b3868c9ae71473fe03341340d2dfdbe8d79310acc",
-                "sha256:965889d9f0e2a75edd81a07592d0ced54daa5b0785f57dc429c378edbcffe779",
-                "sha256:9b248ba3dd8a03b1a10b19efe7d4f7fa41d158fdaa95e2cf65af5a7b95a4f989",
-                "sha256:9bef37ee224e104a413f0780e29adb3e514a5b698aabe0d969a6ba426b8435d1",
-                "sha256:c1ec8db4fac31850286b7cd3b9c0e1b944204668b8eb721674916d4e28744092",
-                "sha256:c8a116feafdb1f84607cb3b14aa1418424ae71fee131642fc568d21423b51824",
-                "sha256:ce85b06a10fc65e6143518b96d3dca27b081a740bae261c2fb20375801a9d56d",
-                "sha256:d705f8aeecdf3262379644e4b55107a3b55860eb812b673b28d0fbc347a60c55",
-                "sha256:e898a0863421650f0bebac8ba40840fc02258ef4714cb7e1fd76b6a6354bda36",
-                "sha256:f8a7bff6e8664afc4e6c28b983845c5bc14965030e3fb98789734d416af77c4b"
-            ],
-            "version": "==8.1"
+                "sha256:0dd4eb8e0bbf365d6f652711ce21b8fd2b596f873d32aabb0fbb53ec604418cc",
+                "sha256:1d0971cc7251aeff955aa742ec541ee8aaea4bb2ebf0245748fbec62f744a37e",
+                "sha256:1d6b4fddb12ab9adf87b843cd4316c4bd602db8d5efd2fb83147f0458fe85135",
+                "sha256:230a3506df6b5f446fed2398e58dcaafdff12d67fe1397dff196411a9e820d02",
+                "sha256:276d2339ebf0df4f45df453923ebd2270b87900eda5dfd4a6b0cfa15f82111c3",
+                "sha256:2cf04601633a4ec176b9cc3d3e73789c037641001dbfaf7c411f89cd3e04fcaf",
+                "sha256:3ddff38894c7857c476feb3538dd847514379d6dc844961dc99f04b0384b1b1b",
+                "sha256:48c222feb3ced18f3dc61168ca18952a22fb88e5eb8902d2bf1b50faefdc34a2",
+                "sha256:51d04df04ed9d08077d10ccbe21e6805791b78eac49d16d30a1f1fe2e44ba0af",
+                "sha256:597c28f3aa7a09e8c070a86b03107094ee5cdafcc0d55f2f2eac92faac8dc67d",
+                "sha256:5c8f0d82ea2468282e08b0cf5307f3ad022290ed50c45d5cb7767957ca782880",
+                "sha256:7189e51955f9268b2bdd6cc537e0faa06f8fffda7fb386e5922c6391de51b077",
+                "sha256:7df3596838b2a0c07c6f6d67752c53859a54993d4f062689fdf547cb56d0f84f",
+                "sha256:826ccf85d4514609219725ba4a7abd569228c2c9f1968e8be05be366f68291ec",
+                "sha256:836d14eb53b500fd92bd5db2fc5894f7c72b634f9c2a28f546f75967503d8e25",
+                "sha256:85db8090ba94e22d964498a47fdd933b8875a1add6ebc514c7ac8703eb97bbf0",
+                "sha256:85e701a6c316b7067f1e8675c638036a796fe5116783a4c932e7eb8e305a3ffe",
+                "sha256:900589e19200be76dd7cbaa95e9771605b5ce3f62512d039fb3bc5da9014912a",
+                "sha256:9147868bb0cc01e6846606cd65cbf9c58598f187b96d14dd1ca17338b08793bb",
+                "sha256:9e7fdc775fe7403dbd8bc883ba59576a6232eac96dacb56512daacf7af5d618d",
+                "sha256:ab5ee15d3462198c794c49ccd31773d8a2b8c17d622aa184f669d2b98c2f0857",
+                "sha256:ad893d889bc700a5835e0a95a3e4f2c39e91577ab232a3dc03c262a0f8fc4b5c",
+                "sha256:b2e71c4670ebe1067fa8632f0d081e47254ee2d3d409de54168b43b0ba9147e0",
+                "sha256:b43b13e5622c5a53ab12f3272e6f42f1ce37cd5b6684b2676cb365403295cd40",
+                "sha256:b4ad84b156cf50529b8ac5cc1638c2cf8680490e3fccb6121316c8c02620a2e4",
+                "sha256:be5fd35e99970518547edc906efab29afd392319f020c3c58b0e1a158e16ed20",
+                "sha256:caa68c95bc1776d3521f81eeb4d5b9438be92514ec2a79fececda814099c8314",
+                "sha256:d144b350045c53c8ff09aa1cfa955012dd32f00c7e0862c199edcabb1a8b32da",
+                "sha256:d2c2d9b24d3c65b5a02cac12cbb4e4194e590314519ed49db2f67ef561c3cf58",
+                "sha256:e9e5fd6dbdf95d99bc03732ded1fc8ef22ebbc05999ac7e0c7bf57fe6e4e5ae2",
+                "sha256:ebf459a1c069f9866d8569439c06193c586e72c9330db1390af7c6a0a32c4afd",
+                "sha256:f31722f1c033c198aa4a39a01905951c00bd1c74f922e8afc1b1c62adbcdd56a",
+                "sha256:f68c352a68e5fdf1e97288d5cec9296664c590c25932a8476224124aaf90dbcd"
+            ],
+            "index": "pypi",
+            "version": "==9.1"
         },
         "yarl": {
             "hashes": [
@@ -412,6 +447,7 @@
                 "sha256:f0b059678fd549c66b89bed03efcabb009075bd131c248ecdf087bdb6faba24a",
                 "sha256:fcbb48a93e8699eae920f8d92f7160c03567b421bc17362a9ffbbd706a816f71"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==1.6.3"
         }
     },
@@ -426,10 +462,11 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
-                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
+                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
+                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
-            "version": "==20.3.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==21.2.0"
         },
         "backcall": {
             "hashes": [
@@ -477,16 +514,18 @@
         },
         "decorator": {
             "hashes": [
-                "sha256:41fa54c2a0cc4ba648be4fd43cff00aedf5b9465c9bf18d64325bc225f08f760",
-                "sha256:e3a62f0520172440ca0dcc823749319382e377f37f140a0b99ef45fecb84bfe7"
+                "sha256:6e5c199c16f7a9f0e3a61a4a54b3d27e7dad0dbdde92b944426cb20914376323",
+                "sha256:72ecfba4320a893c53f9706bebb2d55c270c1e51a28789361aa93e4a21319ed5"
             ],
-            "version": "==4.4.2"
+            "markers": "python_version >= '3.5'",
+            "version": "==5.0.9"
         },
         "entrypoints": {
             "hashes": [
                 "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19",
                 "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"
             ],
+            "markers": "python_version >= '2.7'",
             "version": "==0.3"
         },
         "flake8": {
@@ -499,11 +538,11 @@
         },
         "importlib-metadata": {
             "hashes": [
-                "sha256:24499ffde1b80be08284100393955842be4a59c7c16bbf2738aad0e464a8e0aa",
-                "sha256:c6af5dbf1126cd959c4a8d8efd61d4d3c83bddb0459a17e554284a077574b614"
+                "sha256:833b26fb89d5de469b24a390e9df088d4e52e4ba33b01dc5e0e4f41b81a16c00",
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             "markers": "python_version < '3.8'",
-            "version": "==3.7.0"
+            "version": "==4.5.0"
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@@ -525,6 +564,7 @@
                 "sha256:18456d83f65f400ab0c2d3319e48520420ef43b23a086fdc05dff34132f0fb93",
                 "sha256:92550a404bad8afed881a137ec9a461fed49eca661414be45059329614ed0707"
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             "version": "==0.18.0"
         },
         "mccabe": {
@@ -536,10 +576,11 @@
         },
         "more-itertools": {
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-            "version": "==8.7.0"
+            "markers": "python_version >= '3.5'",
+            "version": "==8.8.0"
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@@ -574,14 +615,16 @@
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             "version": "==20.9"
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-            "version": "==0.8.1"
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@@ -603,14 +646,16 @@
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+            "version": "==3.0.18"
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@@ -624,6 +669,7 @@
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@@ -631,6 +677,7 @@
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@@ -638,20 +685,23 @@
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@@ -675,51 +725,52 @@
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@@ -730,10 +781,11 @@
         },
         "zipp": {
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+            "markers": "python_version >= '3.6'",
+            "version": "==3.4.1"
         }
     }
 }