diff --git a/.env.example b/.env.example
index 2663d75..c7cc7db 100644
--- a/.env.example
+++ b/.env.example
@@ -1,4 +1,4 @@
-DAPI_CLIENT_SEEDS=ip1,ip2
-DAPI_CLIENT_PORT=3000
+# Dapi seed (format - ip:port)
+DAPI_SEED=
 FAUCET_PRIVATE_KEY=
 NETWORK=
diff --git a/bin/test.sh b/bin/test.sh
new file mode 100755
index 0000000..7925ffb
--- /dev/null
+++ b/bin/test.sh
@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+
+set -ea
+
+cmd_usage="Run test suite
+
+Usage: test <seed> [options]
+
+  <seed> can be IP or IP:port
+
+  Options:
+  -ni=pkg   --npm-install=pkg   - install npm package before running the suite
+  -s=a,b,c  --scope=a,b,c       - test scope to run
+  -k=key    --faucet-key=key    - faucet private key string
+  -h        --help              - show help
+
+  Possible scopes:
+  e2e
+  functional
+  core
+  platform
+  e2e:dpns
+  e2e:contacts
+  functional:core
+  functional:platform"
+
+DAPI_SEED="$1"
+
+if [ -z "$DAPI_SEED" ] || [[ $DAPI_SEED == -* ]]
+then
+  echo "Seed is not specified"
+  exit 0
+fi
+
+for i in "$@"
+do
+case ${i} in
+    -h|--help)
+        echo "$cmd_usage"
+        exit 0
+    ;;
+    -ni=*|--npm-install=*)
+    npm_package_to_install="${i#*=}"
+    ;;
+    -s=*|--scope=*)
+    scope="${i#*=}"
+    ;;
+    -k=*|--faucet-key=*)
+    faucet_key="${i#*=}"
+    ;;
+esac
+done
+
+if [ -n "$npm_package_to_install" ]
+then
+  cd .. && npm install "$npm_package_to_install"
+fi
+
+if [ -n "$scope" ]
+then
+  cd .. && DAPI_SEED="$DAPI_SEED" FAUCET_PRIVATE_KEY="$faucet_key" npm run test:"$scope"
+else
+  cd .. && DAPI_SEED="$DAPI_SEED" FAUCET_PRIVATE_KEY="$faucet_key" npm run test
+fi
diff --git a/lib/test/bootstrap.js b/lib/test/bootstrap.js
index cb23663..1180d76 100644
--- a/lib/test/bootstrap.js
+++ b/lib/test/bootstrap.js
@@ -3,6 +3,7 @@ const dotenvSafe = require('dotenv-safe');
 const { expect, use } = require('chai');
 const dirtyChai = require('dirty-chai');
 const chaiAsPromised = require('chai-as-promised');
+const Dash = require('dash');
 
 use(chaiAsPromised);
 use(dirtyChai);
@@ -14,3 +15,13 @@ dotenvSafe.config({
 });
 
 global.expect = expect;
+
+const seeds = [{ service: process.env.DASHJS_SEED }];
+
+global.dashClient = new Dash.Client({
+  seeds,
+});
+
+before(async () => {
+  await global.dashClient.isReady();
+});
diff --git a/package-lock.json b/package-lock.json
index 266f59d..862c64c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -196,6 +196,59 @@
         "lodash.get": "^4.4.2"
       }
     },
+    "@dashevo/wallet-lib": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/@dashevo/wallet-lib/-/wallet-lib-6.0.1.tgz",
+      "integrity": "sha512-F23cVehnALFoFSBtCdsNfPTAcDUhnPJv7AVwkETC4wnHjqD9PcX6flZSbDYKJ8DjVmkUF4+VR5BOcCzQ53A8dw==",
+      "dev": true,
+      "requires": {
+        "@dashevo/dashcore-lib": "^0.18.0",
+        "@dashevo/dpp": "^0.11.0-dev.4",
+        "cbor": "^5.0.1",
+        "crypto-js": "^4.0.0",
+        "eventemitter2": "^6.0.0",
+        "lodash": "^4.17.15",
+        "pbkdf2": "^3.0.17",
+        "winston": "^3.2.1"
+      },
+      "dependencies": {
+        "@dashevo/dpp": {
+          "version": "0.11.1",
+          "resolved": "https://registry.npmjs.org/@dashevo/dpp/-/dpp-0.11.1.tgz",
+          "integrity": "sha512-H9UpWunAbL/IOWE1V1855UUxioqRUoStGbMFQ+5dAj/xLj3NXhQV3Y1wWn+Kvf6ExXkR1cmx2KintU8XpfeaHA==",
+          "dev": true,
+          "requires": {
+            "@dashevo/dashcore-lib": "~0.18.0",
+            "ajv": "^6.10.2",
+            "bs58": "^4.0.1",
+            "cbor": "^5.0.1",
+            "json-schema-ref-parser": "^7.1.3",
+            "lodash.get": "^4.4.2",
+            "lodash.mergewith": "^4.6.2",
+            "lodash.set": "^4.3.2",
+            "multihashes": "^0.4.15"
+          }
+        },
+        "ajv": {
+          "version": "6.12.0",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.0.tgz",
+          "integrity": "sha512-D6gFiFA0RRLyUbvijN74DWAjXSFxWKaWP7mldxkVhyhAV3+SWA9HEJPHQ2c9soIeTFJqcSdFDGFgdqs1iUU2Hw==",
+          "dev": true,
+          "requires": {
+            "fast-deep-equal": "^3.1.1",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.4.1",
+            "uri-js": "^4.2.2"
+          }
+        },
+        "fast-deep-equal": {
+          "version": "3.1.1",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz",
+          "integrity": "sha512-8UEa58QDLauDNfpbrX55Q9jrGHThw2ZMdOky5Gl1CDtVeJDPVrG4Jxx1N8jw2gkWaff5UUuX1KJd+9zGe2B+ZA==",
+          "dev": true
+        }
+      }
+    },
     "@dashevo/x11-hash-js": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/@dashevo/x11-hash-js/-/x11-hash-js-1.0.2.tgz",
@@ -411,6 +464,15 @@
       "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
       "dev": true
     },
+    "async": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "dev": true,
+      "requires": {
+        "lodash": "^4.17.14"
+      }
+    },
     "axios": {
       "version": "0.19.2",
       "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.2.tgz",
@@ -612,6 +674,16 @@
       "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=",
       "dev": true
     },
+    "cipher-base": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/cipher-base/-/cipher-base-1.0.4.tgz",
+      "integrity": "sha512-Kkht5ye6ZGmwv40uUDZztayT2ThLQGfnj/T71N/XzeZeo3nf8foyW7zGTsPYkEya3m5f3cAypH+qe7YOrM1U2Q==",
+      "dev": true,
+      "requires": {
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "circular-json": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.3.tgz",
@@ -687,6 +759,16 @@
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
       "dev": true
     },
+    "color": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/color/-/color-3.0.0.tgz",
+      "integrity": "sha512-jCpd5+s0s0t7p3pHQKpnJ0TpQKKdleP71LWcA0aqiljpiuAkOSUFN/dyH8ZwF0hRmFlrIuRhufds1QyEP9EB+w==",
+      "dev": true,
+      "requires": {
+        "color-convert": "^1.9.1",
+        "color-string": "^1.5.2"
+      }
+    },
     "color-convert": {
       "version": "1.9.3",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
@@ -702,6 +784,38 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
+    "color-string": {
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/color-string/-/color-string-1.5.3.tgz",
+      "integrity": "sha512-dC2C5qeWoYkxki5UAXapdjqO672AM4vZuPGRQfO8b5HKuKGBbKWpITyDYN7TOFKvRW7kOgAn3746clDBMDJyQw==",
+      "dev": true,
+      "requires": {
+        "color-name": "^1.0.0",
+        "simple-swizzle": "^0.2.2"
+      }
+    },
+    "colornames": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/colornames/-/colornames-1.1.1.tgz",
+      "integrity": "sha1-+IiQMGhcfE/54qVZ9Qd+t2qBb5Y=",
+      "dev": true
+    },
+    "colors": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-1.4.0.tgz",
+      "integrity": "sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA==",
+      "dev": true
+    },
+    "colorspace": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/colorspace/-/colorspace-1.1.2.tgz",
+      "integrity": "sha512-vt+OoIP2d76xLhjwbBaucYlNSpPsrJWPlBTtwCpQKIu6/CSMutyzX93O/Do0qzpH3YoHEes8YEFXyZ797rEhzQ==",
+      "dev": true,
+      "requires": {
+        "color": "3.0.x",
+        "text-hex": "1.0.x"
+      }
+    },
     "colour": {
       "version": "0.7.1",
       "resolved": "https://registry.npmjs.org/colour/-/colour-0.7.1.tgz",
@@ -732,6 +846,39 @@
       "integrity": "sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==",
       "dev": true
     },
+    "core-util-is": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+      "dev": true
+    },
+    "create-hash": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
+      "integrity": "sha512-z00bCGNHDG8mHAkP7CtT1qVu+bFQUPjYq/4Iv3C3kWjTFV10zIjfSoeqXo9Asws8gwSHDGj/hl2u4OGIjapeCg==",
+      "dev": true,
+      "requires": {
+        "cipher-base": "^1.0.1",
+        "inherits": "^2.0.1",
+        "md5.js": "^1.3.4",
+        "ripemd160": "^2.0.1",
+        "sha.js": "^2.4.0"
+      }
+    },
+    "create-hmac": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/create-hmac/-/create-hmac-1.1.7.tgz",
+      "integrity": "sha512-MJG9liiZ+ogc4TzUwuvbER1JRdgvUFSB5+VR/g5h82fGaIRWMWddtKBHi7/sVhfjQZ6SehlyhvQYrcYkaUIpLg==",
+      "dev": true,
+      "requires": {
+        "cipher-base": "^1.0.3",
+        "create-hash": "^1.1.0",
+        "inherits": "^2.0.1",
+        "ripemd160": "^2.0.0",
+        "safe-buffer": "^5.0.1",
+        "sha.js": "^2.4.8"
+      }
+    },
     "cross-spawn": {
       "version": "6.0.5",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
@@ -745,6 +892,79 @@
         "which": "^1.2.9"
       }
     },
+    "crypto-js": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/crypto-js/-/crypto-js-4.0.0.tgz",
+      "integrity": "sha512-bzHZN8Pn+gS7DQA6n+iUmBfl0hO5DJq++QP3U6uTucDtk/0iGpXd/Gg7CGR0p8tJhofJyaKoWBuJI4eAO00BBg==",
+      "dev": true
+    },
+    "dash": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/dash/-/dash-2.0.0.tgz",
+      "integrity": "sha512-8xPz3MbL54FyEnYXMfsmukch6/sapso113wVl2rCKYwYAHOLEwV+bdCL71JGDkIcxFrvswCkkph8czd46Vr6Zw==",
+      "dev": true,
+      "requires": {
+        "@dashevo/dapi-client": "~0.11.0",
+        "@dashevo/dashcore-lib": "^0.18.0",
+        "@dashevo/dpp": "~0.11.1",
+        "@dashevo/wallet-lib": "^6.0.1",
+        "bs58": "^4.0.1"
+      },
+      "dependencies": {
+        "@dashevo/dapi-client": {
+          "version": "0.11.0",
+          "resolved": "https://registry.npmjs.org/@dashevo/dapi-client/-/dapi-client-0.11.0.tgz",
+          "integrity": "sha512-JS477m7Q5cdwDIV2CUbH52styU4siaG7kOBQTcl+f9Cbq4FLqslBgh1IlqL3LRZn9k1Fb1O9pNgwcp8iw8VJqg==",
+          "dev": true,
+          "requires": {
+            "@babel/polyfill": "^7.8.3",
+            "@dashevo/dapi-grpc": "~0.12.1",
+            "@dashevo/dash-spv": "^1.1.6",
+            "@dashevo/dashcore-lib": "~0.18.0",
+            "@dashevo/dpp": "~0.11.0",
+            "axios": "^0.19.2",
+            "cbor": "^5.0.1",
+            "lodash": "^4.17.15",
+            "lowdb": "^1.0.0"
+          }
+        },
+        "@dashevo/dpp": {
+          "version": "0.11.1",
+          "resolved": "https://registry.npmjs.org/@dashevo/dpp/-/dpp-0.11.1.tgz",
+          "integrity": "sha512-H9UpWunAbL/IOWE1V1855UUxioqRUoStGbMFQ+5dAj/xLj3NXhQV3Y1wWn+Kvf6ExXkR1cmx2KintU8XpfeaHA==",
+          "dev": true,
+          "requires": {
+            "@dashevo/dashcore-lib": "~0.18.0",
+            "ajv": "^6.10.2",
+            "bs58": "^4.0.1",
+            "cbor": "^5.0.1",
+            "json-schema-ref-parser": "^7.1.3",
+            "lodash.get": "^4.4.2",
+            "lodash.mergewith": "^4.6.2",
+            "lodash.set": "^4.3.2",
+            "multihashes": "^0.4.15"
+          }
+        },
+        "ajv": {
+          "version": "6.12.0",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.0.tgz",
+          "integrity": "sha512-D6gFiFA0RRLyUbvijN74DWAjXSFxWKaWP7mldxkVhyhAV3+SWA9HEJPHQ2c9soIeTFJqcSdFDGFgdqs1iUU2Hw==",
+          "dev": true,
+          "requires": {
+            "fast-deep-equal": "^3.1.1",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.4.1",
+            "uri-js": "^4.2.2"
+          }
+        },
+        "fast-deep-equal": {
+          "version": "3.1.1",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz",
+          "integrity": "sha512-8UEa58QDLauDNfpbrX55Q9jrGHThw2ZMdOky5Gl1CDtVeJDPVrG4Jxx1N8jw2gkWaff5UUuX1KJd+9zGe2B+ZA==",
+          "dev": true
+        }
+      }
+    },
     "debug": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
@@ -817,6 +1037,17 @@
         "rimraf": "^2.2.8"
       }
     },
+    "diagnostics": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/diagnostics/-/diagnostics-1.1.1.tgz",
+      "integrity": "sha512-8wn1PmdunLJ9Tqbx+Fx/ZEuHfJf4NKSN2ZBj7SJC/OWRWha843+WsTjqMe1B5E3p28jqBlp+mJ2fPVxPyNgYKQ==",
+      "dev": true,
+      "requires": {
+        "colorspace": "1.1.x",
+        "enabled": "1.0.x",
+        "kuler": "1.0.x"
+      }
+    },
     "diff": {
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
@@ -868,6 +1099,21 @@
         "minimalistic-crypto-utils": "^1.0.0"
       }
     },
+    "enabled": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/enabled/-/enabled-1.0.2.tgz",
+      "integrity": "sha1-ll9lE9LC0cX0ZStkouM5ZGf8L5M=",
+      "dev": true,
+      "requires": {
+        "env-variable": "0.0.x"
+      }
+    },
+    "env-variable": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/env-variable/-/env-variable-0.0.6.tgz",
+      "integrity": "sha512-bHz59NlBbtS0NhftmR8+ExBEekE7br0e01jw+kk0NDro7TtZzBYZ5ScGPs3OmwnpyfHTHOtr1Y6uedCdrIldtg==",
+      "dev": true
+    },
     "errno": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.7.tgz",
@@ -1168,6 +1414,12 @@
       "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
       "dev": true
     },
+    "eventemitter2": {
+      "version": "6.3.1",
+      "resolved": "https://registry.npmjs.org/eventemitter2/-/eventemitter2-6.3.1.tgz",
+      "integrity": "sha512-cxfu3g0IBn/JEhAPV33NZTi8llQQ5j62D0Yf4ir1U9uQ1DlRZLL3Hh2E/+TWDprSy4BETWvrGBZMUexuC2b6Lw==",
+      "dev": true
+    },
     "external-editor": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/external-editor/-/external-editor-3.0.3.tgz",
@@ -1197,6 +1449,18 @@
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
       "dev": true
     },
+    "fast-safe-stringify": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.0.7.tgz",
+      "integrity": "sha512-Utm6CdzT+6xsDk2m8S6uL8VHxNwI6Jub+e9NYTcAms28T84pTa25GJQV9j0CY0N1rM8hK4x6grpF2BQf+2qwVA==",
+      "dev": true
+    },
+    "fecha": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/fecha/-/fecha-2.3.3.tgz",
+      "integrity": "sha512-lUGBnIamTAwk4znq5BcqsDaxSmZ9nDVJaij6NvRt/Tg4R69gERA+otPKbS86ROw9nxVMw2/mp1fnaiWqbs6Sdg==",
+      "dev": true
+    },
     "figures": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/figures/-/figures-2.0.0.tgz",
@@ -1859,6 +2123,16 @@
       "integrity": "sha1-uhqPGvKg/DllD1yFA2dwQSIGO0Q=",
       "dev": true
     },
+    "hash-base": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/hash-base/-/hash-base-3.0.4.tgz",
+      "integrity": "sha1-X8hoaEfs1zSZQDMZprCj8/auSRg=",
+      "dev": true,
+      "requires": {
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "hash.js": {
       "version": "1.1.7",
       "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
@@ -2062,6 +2336,12 @@
       "integrity": "sha512-qgDYXFSR5WvEfuS5dMj6oTMEbrrSaM0CrFk2Yiq/gXnBvD9pMa2jGXxyhGLfvhZpuMZe18CJpFxAt3CRs42NMg==",
       "dev": true
     },
+    "is-stream": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz",
+      "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ=",
+      "dev": true
+    },
     "is-symbol": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.2.tgz",
@@ -2099,6 +2379,17 @@
         "esprima": "^4.0.0"
       }
     },
+    "json-schema-ref-parser": {
+      "version": "7.1.4",
+      "resolved": "https://registry.npmjs.org/json-schema-ref-parser/-/json-schema-ref-parser-7.1.4.tgz",
+      "integrity": "sha512-AD7bvav0vak1/63w3jH8F7eHId/4E4EPdMAEZhGxtjktteUv9dnNB/cJy6nVnMyoTPBJnLwFK6tiQPSTeleCtQ==",
+      "dev": true,
+      "requires": {
+        "call-me-maybe": "^1.0.1",
+        "js-yaml": "^3.13.1",
+        "ono": "^6.0.0"
+      }
+    },
     "json-schema-traverse": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
@@ -2111,6 +2402,15 @@
       "integrity": "sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=",
       "dev": true
     },
+    "kuler": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/kuler/-/kuler-1.0.1.tgz",
+      "integrity": "sha512-J9nVUucG1p/skKul6DU3PUZrhs0LPulNaeUOox0IyXDi8S4CztTHs1gQphhuZmzXG7VOQSf6NJfKuzteQLv9gQ==",
+      "dev": true,
+      "requires": {
+        "colornames": "^1.1.1"
+      }
+    },
     "lcid": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/lcid/-/lcid-1.0.0.tgz",
@@ -2252,6 +2552,27 @@
       "integrity": "sha1-2HV7HagH3eJIFrDWqEvqGnYjCyM=",
       "dev": true
     },
+    "logform": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/logform/-/logform-2.1.2.tgz",
+      "integrity": "sha512-+lZh4OpERDBLqjiwDLpAWNQu6KMjnlXH2ByZwCuSqVPJletw0kTWJf5CgSNAUKn1KUkv3m2cUz/LK8zyEy7wzQ==",
+      "dev": true,
+      "requires": {
+        "colors": "^1.2.1",
+        "fast-safe-stringify": "^2.0.4",
+        "fecha": "^2.3.3",
+        "ms": "^2.1.1",
+        "triple-beam": "^1.3.0"
+      },
+      "dependencies": {
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        }
+      }
+    },
     "long": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz",
@@ -2285,6 +2606,17 @@
       "integrity": "sha1-81ypHEk/e3PaDgdJUwTxezH4fuU=",
       "dev": true
     },
+    "md5.js": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/md5.js/-/md5.js-1.3.5.tgz",
+      "integrity": "sha512-xitP+WxNPcTTOgnTJcrhM0xvdPepipPSf3I8EIpGKeFLjt3PlJLIDG3u8EX53ZIubkb+5U2+3rELYpEhHhzdkg==",
+      "dev": true,
+      "requires": {
+        "hash-base": "^3.0.0",
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.1.2"
+      }
+    },
     "memdown": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/memdown/-/memdown-3.0.0.tgz",
@@ -2525,6 +2857,12 @@
         "wrappy": "1"
       }
     },
+    "one-time": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/one-time/-/one-time-0.0.4.tgz",
+      "integrity": "sha1-+M33eISCb+Tf+T46nMN7HkSAdC4=",
+      "dev": true
+    },
     "onetime": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/onetime/-/onetime-2.0.1.tgz",
@@ -2534,6 +2872,12 @@
         "mimic-fn": "^1.0.0"
       }
     },
+    "ono": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/ono/-/ono-6.0.1.tgz",
+      "integrity": "sha512-5rdYW/106kHqLeG22GE2MHKq+FlsxMERZev9DCzQX1zwkxnFwBivSn5i17a5O/rDmOJOdf4Wyt80UZljzx9+DA==",
+      "dev": true
+    },
     "optionator": {
       "version": "0.8.2",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.2.tgz",
@@ -2650,6 +2994,19 @@
       "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
       "dev": true
     },
+    "pbkdf2": {
+      "version": "3.0.17",
+      "resolved": "https://registry.npmjs.org/pbkdf2/-/pbkdf2-3.0.17.tgz",
+      "integrity": "sha512-U/il5MsrZp7mGg3mSQfn742na2T+1/vHDCG5/iTI3X9MKUuYUZVLQhyRsg06mCgDBTd57TxzgZt7P+fYfjRLtA==",
+      "dev": true,
+      "requires": {
+        "create-hash": "^1.1.2",
+        "create-hmac": "^1.1.4",
+        "ripemd160": "^2.0.1",
+        "safe-buffer": "^5.0.1",
+        "sha.js": "^2.4.8"
+      }
+    },
     "pify": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
@@ -2692,6 +3049,12 @@
       "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
       "dev": true
     },
+    "process-nextick-args": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
+      "dev": true
+    },
     "progress": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.1.tgz",
@@ -2838,6 +3201,16 @@
         "glob": "^7.0.5"
       }
     },
+    "ripemd160": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/ripemd160/-/ripemd160-2.0.2.tgz",
+      "integrity": "sha512-ii4iagi25WusVoiC4B4lq7pbXfAp3D9v5CwfkY33vffw2+pkDjY1D8GaN7spsxvCSx8dkPqOZCEZyfxcmJG2IA==",
+      "dev": true,
+      "requires": {
+        "hash-base": "^3.0.0",
+        "inherits": "^2.0.1"
+      }
+    },
     "run-async": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/run-async/-/run-async-2.3.0.tgz",
@@ -2874,6 +3247,16 @@
       "integrity": "sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==",
       "dev": true
     },
+    "sha.js": {
+      "version": "2.4.11",
+      "resolved": "https://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
+      "integrity": "sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==",
+      "dev": true,
+      "requires": {
+        "inherits": "^2.0.1",
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "shebang-command": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-1.2.0.tgz",
@@ -2895,6 +3278,23 @@
       "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
       "dev": true
     },
+    "simple-swizzle": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz",
+      "integrity": "sha1-pNprY1/8zMoz9w0Xy5JZLeleVXo=",
+      "dev": true,
+      "requires": {
+        "is-arrayish": "^0.3.1"
+      },
+      "dependencies": {
+        "is-arrayish": {
+          "version": "0.3.2",
+          "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.3.2.tgz",
+          "integrity": "sha512-eVRqCvVlZbuw3GrM63ovNSNAeA1K16kaR/LRY/92w0zxQ5/1YzwblUX652i4Xs9RwAGjW9d9y6X88t8OaAJfWQ==",
+          "dev": true
+        }
+      }
+    },
     "slice-ansi": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-1.0.0.tgz",
@@ -2942,6 +3342,12 @@
       "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
       "dev": true
     },
+    "stack-trace": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/stack-trace/-/stack-trace-0.0.10.tgz",
+      "integrity": "sha1-VHxws0fo0ytOEI6hoqFZ5f3eGcA=",
+      "dev": true
+    },
     "steno": {
       "version": "0.4.4",
       "resolved": "https://registry.npmjs.org/steno/-/steno-0.4.4.tgz",
@@ -3020,6 +3426,12 @@
         }
       }
     },
+    "text-hex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/text-hex/-/text-hex-1.0.0.tgz",
+      "integrity": "sha512-uuVGNWzgJ4yhRaNSiubPY7OjISw4sw4E5Uv0wbjp+OzcbmVU/rsT8ujgcXJhn9ypzsgr5vlzpPqP+MBBKcGvbg==",
+      "dev": true
+    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
@@ -3041,6 +3453,12 @@
         "os-tmpdir": "~1.0.2"
       }
     },
+    "triple-beam": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/triple-beam/-/triple-beam-1.3.0.tgz",
+      "integrity": "sha512-XrHUvV5HpdLmIj4uVMxHggLbFSZYIn7HEWsqePZcI50pco+MPqJ50wMGY794X7AOOhxOBAjbkqfAbEe/QMp2Lw==",
+      "dev": true
+    },
     "tslib": {
       "version": "1.9.3",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz",
@@ -3114,6 +3532,71 @@
       "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY=",
       "dev": true
     },
+    "winston": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/winston/-/winston-3.2.1.tgz",
+      "integrity": "sha512-zU6vgnS9dAWCEKg/QYigd6cgMVVNwyTzKs81XZtTFuRwJOcDdBg7AU0mXVyNbs7O5RH2zdv+BdNZUlx7mXPuOw==",
+      "dev": true,
+      "requires": {
+        "async": "^2.6.1",
+        "diagnostics": "^1.1.1",
+        "is-stream": "^1.1.0",
+        "logform": "^2.1.1",
+        "one-time": "0.0.4",
+        "readable-stream": "^3.1.1",
+        "stack-trace": "0.0.x",
+        "triple-beam": "^1.3.0",
+        "winston-transport": "^4.3.0"
+      }
+    },
+    "winston-transport": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/winston-transport/-/winston-transport-4.3.0.tgz",
+      "integrity": "sha512-B2wPuwUi3vhzn/51Uukcao4dIduEiPOcOt9HJ3QeaXgkJ5Z7UwpBzxS4ZGNHtrxrUvTwemsQiSys0ihOf8Mp1A==",
+      "dev": true,
+      "requires": {
+        "readable-stream": "^2.3.6",
+        "triple-beam": "^1.2.0"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+          "dev": true
+        },
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "dev": true,
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
+          "dev": true
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+          "dev": true,
+          "requires": {
+            "safe-buffer": "~5.1.0"
+          }
+        }
+      }
+    },
     "wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
diff --git a/package.json b/package.json
index 56aa104..86c0d0b 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "@dashevo/dpp": "~0.12.0-dev.8",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
+    "dash": "^2.0.0",
     "dirty-chai": "^2.0.1",
     "dotenv-safe": "^6.1.0",
     "eslint": "^5.7.0",
diff --git a/test/.eslintrc b/test/.eslintrc
index 720ced7..fa7944b 100644
--- a/test/.eslintrc
+++ b/test/.eslintrc
@@ -7,6 +7,7 @@
     "import/no-extraneous-dependencies": "off"
   },
   "globals": {
-    "expect": true
+    "expect": true,
+    "dashClient": true
   }
 }
diff --git a/test/e2e/contacts.spec.js b/test/e2e/contacts.spec.js
index 2628160..0d80cef 100644
--- a/test/e2e/contacts.spec.js
+++ b/test/e2e/contacts.spec.js
@@ -40,9 +40,9 @@ describe('Contacts', function contacts() {
       stateRepository,
     });
 
-    const seeds = process.env.DAPI_CLIENT_SEEDS
+    const seeds = process.env.DAPI_SEED
       .split(',')
-      .map(ip => ({ service: `${ip}:${process.env.DAPI_CLIENT_PORT}` }));
+      .map(seed => ({ service: `${seed}` }));
 
     dapiClient = new DAPIClient({
       seeds,