diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index e5fb78a..5badcd1 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.1.22
+current_version = 0.1.25
 
 [bumpversion:file:package.json]
 
diff --git a/package-lock.json b/package-lock.json
index c2cab25..874254a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@oceanprotocol/squid",
-  "version": "0.1.22",
+  "version": "0.1.26",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -14,12 +14,12 @@
       }
     },
     "@babel/generator": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.1.6.tgz",
-      "integrity": "sha512-brwPBtVvdYdGxtenbQgfCdDPmtkmUBZPjUoK5SXJEBuHaA5BCubh9ly65fzXz7R6o5rA76Rs22ES8Z+HCc0YIQ==",
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.1.3.tgz",
+      "integrity": "sha512-ZoCZGcfIJFJuZBqxcY9OjC1KW2lWK64qrX1o4UYL3yshVhwKFYgzpWZ0vvtGMNJdTlvkw0W+HR1VnYN8q3QPFQ==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.1.6",
+        "@babel/types": "^7.1.3",
         "jsesc": "^2.5.1",
         "lodash": "^4.17.10",
         "source-map": "^0.5.0",
@@ -64,12 +64,20 @@
         "chalk": "^2.0.0",
         "esutils": "^2.0.2",
         "js-tokens": "^4.0.0"
+      },
+      "dependencies": {
+        "js-tokens": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+          "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+          "dev": true
+        }
       }
     },
     "@babel/parser": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.1.6.tgz",
-      "integrity": "sha512-dWP6LJm9nKT6ALaa+bnL247GHHMWir3vSlZ2+IHgHgktZQx0L3Uvq2uAWcuzIe+fujRsYWBW2q622C5UvGK9iQ==",
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.1.3.tgz",
+      "integrity": "sha512-gqmspPZOMW3MIRb9HlrnbZHXI1/KHTOroBwN1NcLL6pWxzqzEKGvRTq0W/PxS45OtQGbaFikSQpkS5zbnsQm2w==",
       "dev": true
     },
     "@babel/template": {
@@ -84,43 +92,26 @@
       }
     },
     "@babel/traverse": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.1.6.tgz",
-      "integrity": "sha512-CXedit6GpISz3sC2k2FsGCUpOhUqKdyL0lqNrImQojagnUMXf8hex4AxYFRuMkNGcvJX5QAFGzB5WJQmSv8SiQ==",
+      "version": "7.1.4",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.1.4.tgz",
+      "integrity": "sha512-my9mdrAIGdDiSVBuMjpn/oXYpva0/EZwWL3sm3Wcy/AVWO2eXnsoZruOT9jOGNRXU8KbCIu5zsKnXcAJ6PcV6Q==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.1.6",
+        "@babel/generator": "^7.1.3",
         "@babel/helper-function-name": "^7.1.0",
         "@babel/helper-split-export-declaration": "^7.0.0",
-        "@babel/parser": "^7.1.6",
-        "@babel/types": "^7.1.6",
-        "debug": "^4.1.0",
+        "@babel/parser": "^7.1.3",
+        "@babel/types": "^7.1.3",
+        "debug": "^3.1.0",
         "globals": "^11.1.0",
         "lodash": "^4.17.10"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.0.tgz",
-          "integrity": "sha512-heNPJUJIqC+xB6ayLAMHaIrmN9HKa7aQO8MGqKpvCA+uJYVcvR6l5kgdrhRuwPFHU7P5/A1w0BjByPHwpfTDKg==",
-          "dev": true,
-          "requires": {
-            "ms": "^2.1.1"
-          }
-        },
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
       }
     },
     "@babel/types": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.1.6.tgz",
-      "integrity": "sha512-DMiUzlY9DSjVsOylJssxLHSgj6tWM9PRFJOGW/RaOglVOK9nzTxoOMfTfRQXGUCUQ/HmlG2efwC+XqUEJ5ay4w==",
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.1.3.tgz",
+      "integrity": "sha512-RpPOVfK+yatXyn8n4PB1NW6k9qjinrXrRR8ugBN8fD6hCy5RXI6PSbVqpOJBO9oSaY7Nom4ohj35feb0UR9hSA==",
       "dev": true,
       "requires": {
         "esutils": "^2.0.2",
@@ -128,6 +119,22 @@
         "to-fast-properties": "^2.0.0"
       }
     },
+    "@mrmlnc/readdir-enhanced": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/@mrmlnc/readdir-enhanced/-/readdir-enhanced-2.2.1.tgz",
+      "integrity": "sha512-bPHp6Ji8b41szTOcaP63VlnbbO5Ny6dwAATtY6JTjh5N2OLrb5Qk/Th5cRkRQhkWCt+EJsYrNB0MiL+Gpn6e3g==",
+      "dev": true,
+      "requires": {
+        "call-me-maybe": "^1.0.1",
+        "glob-to-regexp": "^0.3.0"
+      }
+    },
+    "@nodelib/fs.stat": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz",
+      "integrity": "sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==",
+      "dev": true
+    },
     "@oceanprotocol/keeper-contracts": {
       "version": "0.3.25",
       "resolved": "https://registry.npmjs.org/@oceanprotocol/keeper-contracts/-/keeper-contracts-0.3.25.tgz",
@@ -155,9 +162,15 @@
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       "dev": true
     },
+    "@types/estree": {
+      "version": "0.0.39",
+      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
+      "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==",
+      "dev": true
+    },
     "@types/events": {
       "version": "1.2.0",
-      "resolved": "http://registry.npmjs.org/@types/events/-/events-1.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/@types/events/-/events-1.2.0.tgz",
       "integrity": "sha512-KEIlhXnIutzKwRbQkGWb/I4HFqBuUykAdHgDED6xqwXJfONCjF5VoE0cXEiurh3XauygxzeDzgtXUqvLkxFzzA==",
       "dev": true
     },
@@ -194,9 +207,9 @@
       "dev": true
     },
     "@types/lodash": {
-      "version": "4.14.118",
-      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.118.tgz",
-      "integrity": "sha512-iiJbKLZbhSa6FYRip/9ZDX6HXhayXLDGY2Fqws9cOkEQ6XeKfaxB0sC541mowZJueYyMnVUmmG+al5/4fCDrgw==",
+      "version": "4.14.117",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.117.tgz",
+      "integrity": "sha512-xyf2m6tRbz8qQKcxYZa7PA4SllYcay+eh25DN3jmNYY6gSTL7Htc/bttVdkqj2wfJGbeWlQiX8pIyJpKU+tubw==",
       "dev": true
     },
     "@types/marked": {
@@ -434,6 +447,12 @@
         "uri-js": "^4.2.2"
       }
     },
+    "ajv-errors": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/ajv-errors/-/ajv-errors-1.0.0.tgz",
+      "integrity": "sha1-7PAh+hCP0X37Xms4Py3SM+Mf/Fk=",
+      "dev": true
+    },
     "ajv-keywords": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.2.0.tgz",
@@ -500,6 +519,21 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
     },
+    "array-union": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
+      "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
+      "dev": true,
+      "requires": {
+        "array-uniq": "^1.0.1"
+      }
+    },
+    "array-uniq": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
+      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=",
+      "dev": true
+    },
     "array-unique": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
@@ -544,7 +578,7 @@
         },
         "util": {
           "version": "0.10.3",
-          "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+          "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
           "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
           "requires": {
             "inherits": "2.0.1"
@@ -643,12 +677,6 @@
             "supports-color": "^2.0.0"
           }
         },
-        "js-tokens": {
-          "version": "3.0.2",
-          "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-3.0.2.tgz",
-          "integrity": "sha1-mGbfOVECEw449/mWvOtlRDIJwls=",
-          "dev": true
-        },
         "strip-ansi": {
           "version": "3.0.1",
           "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
@@ -739,6 +767,7 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
       "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
+      "optional": true,
       "requires": {
         "tweetnacl": "^0.14.3"
       }
@@ -800,9 +829,9 @@
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     },
     "bluebird": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.3.tgz",
-      "integrity": "sha512-/qKPUQlaW1OyR51WeCPBvRnAlnZFUJkCSG5HzGnuIqhgyJtF+T94lFnn33eiazjRm2LAHVy2guNnaq48X9SJuw=="
+      "version": "3.5.2",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.2.tgz",
+      "integrity": "sha512-dhHTWMI7kMx5whMQntl7Vr9C6BvV10lFXDAasnqnrMYhXVCzzk6IO9Fo2L75jXHT07WrOngL1WDXOp+yYS91Yg=="
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     "bn.js": {
       "version": "4.11.8",
@@ -810,20 +839,35 @@
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     "body-parser": {
-      "version": "1.18.3",
-      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.3.tgz",
-      "integrity": "sha1-WykhmP/dVTs6DyDe0FkrlWlVyLQ=",
+      "version": "1.18.2",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.2.tgz",
+      "integrity": "sha1-h2eKGdhLR9hZuDGZvVm84iKxBFQ=",
       "requires": {
         "bytes": "3.0.0",
         "content-type": "~1.0.4",
         "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "http-errors": "~1.6.3",
-        "iconv-lite": "0.4.23",
+        "depd": "~1.1.1",
+        "http-errors": "~1.6.2",
+        "iconv-lite": "0.4.19",
         "on-finished": "~2.3.0",
-        "qs": "6.5.2",
-        "raw-body": "2.3.3",
-        "type-is": "~1.6.16"
+        "qs": "6.5.1",
+        "raw-body": "2.3.2",
+        "type-is": "~1.6.15"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        }
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@@ -1024,21 +1068,23 @@
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-      "version": "10.0.4",
-      "resolved": "http://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
-      "integrity": "sha512-Dph0MzuH+rTQzGPNT9fAnrPmMmjKfST6trxJeK7NQuHRaVw24VzPRWTmg9MpcwOVQZO0E1FBICUlFeNaKPIfHA==",
+      "version": "11.3.1",
+      "resolved": "https://registry.npmjs.org/cacache/-/cacache-11.3.1.tgz",
+      "integrity": "sha512-2PEw4cRRDu+iQvBTTuttQifacYjLPhET+SYO/gEFMy8uhi+jlJREDAjSF5FWSdV/Aw5h18caHA7vMTw2c+wDzA==",
+      "dev": true,
       "requires": {
         "bluebird": "^3.5.1",
         "chownr": "^1.0.1",
+        "figgy-pudding": "^3.1.0",
         "glob": "^7.1.2",
         "graceful-fs": "^4.1.11",
-        "lru-cache": "^4.1.1",
-        "mississippi": "^2.0.0",
+        "lru-cache": "^4.1.3",
+        "mississippi": "^3.0.0",
         "mkdirp": "^0.5.1",
         "move-concurrently": "^1.0.1",
         "promise-inflight": "^1.0.1",
         "rimraf": "^2.6.2",
-        "ssri": "^5.2.4",
+        "ssri": "^6.0.0",
         "unique-filename": "^1.1.0",
         "y18n": "^4.0.0"
       }
@@ -1059,6 +1105,12 @@
         "unset-value": "^1.0.0"
       }
     },
+    "call-me-maybe": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/call-me-maybe/-/call-me-maybe-1.0.1.tgz",
+      "integrity": "sha1-JtII6onje1y95gJQoV8DHBak1ms=",
+      "dev": true
+    },
     "camelcase": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.0.0.tgz",
@@ -1177,6 +1229,11 @@
         "wrap-ansi": "^2.0.0"
       }
     },
+    "co": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
+    },
     "code-point-at": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
@@ -1243,6 +1300,23 @@
         "typedarray": "^0.0.6"
       }
     },
+    "concat-with-sourcemaps": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/concat-with-sourcemaps/-/concat-with-sourcemaps-1.1.0.tgz",
+      "integrity": "sha512-4gEjHJFT9e+2W/77h/DS5SGUgwDaOwprX8L/gl5+3ixnzkVJJsZWDSelmN3Oilw3LNDZjZV0yqH1hLG3k6nghg==",
+      "dev": true,
+      "requires": {
+        "source-map": "^0.6.1"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        }
+      }
+    },
     "console-browserify": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/console-browserify/-/console-browserify-1.1.0.tgz",
@@ -1310,9 +1384,9 @@
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-      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
-      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "version": "2.8.4",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.4.tgz",
+      "integrity": "sha1-K9OB8usgECAQXNUOpZ2mMJBpRoY=",
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         "vary": "^1"
@@ -1352,6 +1426,16 @@
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+    "cross-env": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-5.2.0.tgz",
+      "integrity": "sha512-jtdNFfFW1hB7sMhr/H6rW1Z45LFqyI431m3qU6bFXcQ3Eh7LtBuG3h74o7ohHZ3crrRkkqHlo4jYHFPcjroANg==",
+      "dev": true,
+      "requires": {
+        "cross-spawn": "^6.0.5",
+        "is-windows": "^1.0.0"
+      }
+    },
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@@ -1401,11 +1485,12 @@
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+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.5.tgz",
+      "integrity": "sha512-D61LaDQPQkxJ5AUM2mbSJRbPkNs/TmdmOeLAi1hgDkpDfIfetSrjmWhccwtuResSwMbACjx/xXQofvM9CE/aeg==",
+      "dev": true,
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-        "ms": "2.0.0"
+        "ms": "^2.1.1"
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@@ -1435,7 +1520,7 @@
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
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@@ -1500,7 +1585,7 @@
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-          "resolved": "http://registry.npmjs.org/file-type/-/file-type-3.9.0.tgz",
+          "resolved": "https://registry.npmjs.org/file-type/-/file-type-3.9.0.tgz",
           "integrity": "sha1-JXoHg4TR24CHvESdEH1SpSZyuek="
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+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-2.0.0.tgz",
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+          "integrity": "sha1-9tXREJ4Z1j7fQo4L1X4Sd3YVM0s=",
+          "requires": {
+            "find-up": "^2.1.0"
+          }
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+        "pump": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/pump/-/pump-2.0.1.tgz",
+          "integrity": "sha512-ruPMNRkN3MHP1cWJc9OWr+T/xDP0jhXYCLfJcBuX54hhfIBnaQmAUMfDcG4DM5UMWByBbJY69QSphm3jtDKIkA==",
+          "requires": {
+            "end-of-stream": "^1.1.0",
+            "once": "^1.3.1"
+          }
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           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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+        },
+        "ssri": {
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/ssri/-/ssri-5.3.0.tgz",
+          "integrity": "sha512-XRSIPqLij52MtgoQavH/x/dU1qVKtWUAAZeOHsR9c2Ddi4XerFy3mc1alf+dLJKl9EUIm/Ht+EowFkTUOA6GAQ==",
+          "requires": {
+            "safe-buffer": "^5.1.1"
+          }
         }
       }
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@@ -6908,9 +7574,9 @@
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-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/unbzip2-stream/-/unbzip2-stream-1.3.1.tgz",
-      "integrity": "sha512-fIZnvdjblYs7Cru/xC6tCPVhz7JkYcVQQkePwMLyQELzYTds2Xn8QefPVnvdVhhZqubxNA1cASXEH5wcK0Bucw==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/unbzip2-stream/-/unbzip2-stream-1.3.0.tgz",
+      "integrity": "sha512-kE2WkurNnPUMcryNioS68DDbhoPB8Qxsd8btHSj+sd5Pjh2GsjmeHLzMSqV9HHziAo8FzVxVCJl9ZYhk7yY1pA==",
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@@ -7101,7 +7767,7 @@
     },
     "utf8": {
       "version": "2.1.1",
-      "resolved": "http://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
       "integrity": "sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g="
     },
     "util": {
@@ -7283,6 +7949,11 @@
         "web3-utils": "1.0.0-beta.36"
       },
       "dependencies": {
+        "@types/node": {
+          "version": "10.11.4",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-10.11.4.tgz",
+          "integrity": "sha512-ojnbBiKkZFYRfQpmtnnWTMw+rzGp/JiystjluW9jgN3VzRwilXddJ6aGQ9V/7iuDG06SBgn7ozW9k3zcAnYjYQ=="
+        },
         "elliptic": {
           "version": "6.3.3",
           "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz",
@@ -7309,6 +7980,13 @@
             "setimmediate": "1.0.4",
             "uuid": "2.0.1",
             "xmlhttprequest": "1.8.0"
+          },
+          "dependencies": {
+            "uuid": {
+              "version": "2.0.1",
+              "resolved": "http://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
+              "integrity": "sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w="
+            }
           }
         },
         "hash.js": {
@@ -7319,11 +7997,6 @@
             "inherits": "^2.0.3",
             "minimalistic-assert": "^1.0.0"
           }
-        },
-        "uuid": {
-          "version": "2.0.1",
-          "resolved": "http://registry.npmjs.org/uuid/-/uuid-2.0.1.tgz",
-          "integrity": "sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w="
         }
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@@ -7454,8 +8127,32 @@
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       "requires": {
         "underscore": "1.8.3",
-        "web3-core-helpers": "1.0.0-beta.36",
-        "websocket": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2"
+        "web3-core-helpers": "1.0.0-beta.36"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        },
+        "websocket": {
+          "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "from": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "requires": {
+            "debug": "^2.2.0",
+            "nan": "^2.3.3",
+            "typedarray-to-buffer": "^3.1.2",
+            "yaeti": "^0.0.6"
+          }
+        }
       }
     },
     "web3-shh": {
@@ -7520,9 +8217,10 @@
       "integrity": "sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg=="
     },
     "webpack": {
-      "version": "4.25.1",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.25.1.tgz",
-      "integrity": "sha512-T0GU/3NRtO4tMfNzsvpdhUr8HnzA4LTdP2zd+e5zd6CdOH5vNKHnAlO+DvzccfhPdzqRrALOFcjYxx7K5DWmvA==",
+      "version": "4.26.1",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.26.1.tgz",
+      "integrity": "sha512-i2oOvEvuvLLSuSCkdVrknaxAhtUZ9g+nLSoHCWV0gDzqGX2DXaCrMmMUpbRsTSSLrUqAI56PoEiyMUZIZ1msug==",
+      "dev": true,
       "requires": {
         "@webassemblyjs/ast": "1.7.11",
         "@webassemblyjs/helper-module-context": "1.7.11",
@@ -7545,7 +8243,7 @@
         "node-libs-browser": "^2.0.0",
         "schema-utils": "^0.4.4",
         "tapable": "^1.1.0",
-        "uglifyjs-webpack-plugin": "^1.2.4",
+        "terser-webpack-plugin": "^1.1.0",
         "watchpack": "^1.5.0",
         "webpack-sources": "^1.3.0"
       }
@@ -7593,6 +8291,28 @@
         "yargs": "^12.0.2"
       }
     },
+    "webpack-concat-plugin": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/webpack-concat-plugin/-/webpack-concat-plugin-3.0.0.tgz",
+      "integrity": "sha512-DLdDbZXyrFR99wyAVC9P06HLjr2XujBmQdSbnQMK2o01H9U2NHsN5W76jeTVeXDq5OLvZf8r/se65ftRo3Prow==",
+      "dev": true,
+      "requires": {
+        "concat-with-sourcemaps": "^1.0.5",
+        "globby": "^8.0.1",
+        "schema-utils": "^0.4.5",
+        "uglify-es": "^3.3.9",
+        "upath": "^1.1.0"
+      }
+    },
+    "webpack-merge": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-4.1.4.tgz",
+      "integrity": "sha512-TmSe1HZKeOPey3oy1Ov2iS3guIZjWvMT2BBJDzzT5jScHTjVC3mpjJofgueEzaEd6ibhxRDD6MIblDr8tzh8iQ==",
+      "dev": true,
+      "requires": {
+        "lodash": "^4.17.5"
+      }
+    },
     "webpack-sources": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.3.0.tgz",
@@ -7609,16 +8329,6 @@
         }
       }
     },
-    "websocket": {
-      "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-      "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
-      "requires": {
-        "debug": "^2.2.0",
-        "nan": "^2.3.3",
-        "typedarray-to-buffer": "^3.1.2",
-        "yaeti": "^0.0.6"
-      }
-    },
     "whatwg-url": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-7.0.0.tgz",
@@ -7704,9 +8414,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "ws": {
-      "version": "6.1.2",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.2.tgz",
-      "integrity": "sha512-rfUqzvz0WxmSXtJpPMX2EeASXabOrSMk1ruMOV3JBTBjo4ac2lDjGGsbQSyxj8Odhw5fBib8ZKEjDNvgouNKYw==",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.0.tgz",
+      "integrity": "sha512-H3dGVdGvW2H8bnYpIDc3u3LH8Wue3Qh+Zto6aXXFzvESkTVT6rAfKR6tR/+coaUvxs8yHtmNV0uioBF62ZGSTg==",
       "requires": {
         "async-limiter": "~1.0.0"
       }
@@ -7767,11 +8477,6 @@
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
       "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w=="
     },
-    "yaeti": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/yaeti/-/yaeti-0.0.6.tgz",
-      "integrity": "sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc="
-    },
     "yallist": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
@@ -7794,46 +8499,6 @@
         "which-module": "^2.0.0",
         "y18n": "^3.2.1 || ^4.0.0",
         "yargs-parser": "^11.1.1"
-      },
-      "dependencies": {
-        "find-up": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
-          "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
-          "requires": {
-            "locate-path": "^3.0.0"
-          }
-        },
-        "locate-path": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
-          "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
-          "requires": {
-            "p-locate": "^3.0.0",
-            "path-exists": "^3.0.0"
-          }
-        },
-        "p-limit": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.0.0.tgz",
-          "integrity": "sha512-fl5s52lI5ahKCernzzIyAP0QAZbGIovtVHGwpcu1Jr/EpzLVDI2myISHwGqK7m8uQFugVWSrbxH7XnhGtvEc+A==",
-          "requires": {
-            "p-try": "^2.0.0"
-          }
-        },
-        "p-locate": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
-          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
-          "requires": {
-            "p-limit": "^2.0.0"
-          }
-        },
-        "p-try": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.0.0.tgz",
-          "integrity": "sha512-hMp0onDKIajHfIkdRk3P4CdCmErkYAxxDtP3Wx/4nZ3aGlau2VKh3mZpcuFkH27WQkL/3WBCPOktzA9ZOAnMQQ=="
-        }
       }
     },
     "yargs-parser": {
diff --git a/package.json b/package.json
index d051dc7..24d180f 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,9 @@
 {
   "name": "@oceanprotocol/squid",
-  "version": "0.1.22",
+  "version": "0.1.26",
   "description": "JavaScript client library for Ocean Protocol",
-  "main": "dist/squid.js",
+  "main": "./dist/node/squid.js",
+  "browser": "./dist/browser/squid.cjs2.min.js",
   "scripts": {
     "test": "mocha",
     "test:watch": "mocha -w --watch-extensions js,ts,json",
@@ -10,7 +11,9 @@
     "clean": "rm -rf ./dist/ ./doc/ ./coverage ./.nyc_output",
     "lint": "tslint -c tslint.json 'src/**/*.ts' 'test/**/*.ts'",
     "start": "npm link @oceanprotocol/keeper-contracts @oceanprotocol/secret-store-client && npm run build:watch",
-    "build": "npm run clean && npm run lint && tsc && npm run doc",
+    "build": "npm run clean && npm run build:tsc && npm run build:dist",
+    "build:tsc": "tsc",
+    "build:dist": "cross-env NODE_ENV=production webpack",
     "build:watch": "tsc -w",
     "doc": "typedoc --mode modules --out ./doc/ ./src/",
     "run": "ts-node",
@@ -67,12 +70,20 @@
     "@types/mocha": "^5.2.5",
     "@types/node": "^10.12.10",
     "chai": "^4.2.0",
+    "cross-env": "^5.2.0",
     "mocha": "^5.2.0",
     "nyc": "^13.1.0",
+    "rollup": "^0.67.3",
     "source-map-support": "^0.5.9",
+    "ts-loader": "^5.3.0",
     "ts-node": "^7.0.1",
     "tslint": "^5.11.0",
     "typedoc": "^0.13.0",
-    "typescript": "^3.1.6"
+    "typescript": "^3.1.6",
+    "uglify-js": "^3.4.9",
+    "webpack": "^4.26.1",
+    "webpack-cli": "^3.1.2",
+    "webpack-concat-plugin": "^3.0.0",
+    "webpack-merge": "^4.1.4"
   }
 }
diff --git a/plugins/add-vendors-plugin.js b/plugins/add-vendors-plugin.js
new file mode 100644
index 0000000..be75bcd
--- /dev/null
+++ b/plugins/add-vendors-plugin.js
@@ -0,0 +1,31 @@
+const { ConcatSource } = require('webpack-sources')
+
+module.exports = class AddVendorsPlugin {
+    constructor(base) {
+        this.base = base
+    }
+
+    apply(compiler) {
+        compiler.hooks.emit.tapAsync(
+            `AddVendorsPlugin ${this.base}`,
+            (compilation, callback) => {
+                const main = compilation.assets[`main.${this.base}`]
+                const mainMap = compilation.assets[`main.${this.base}.map`]
+                const vendor = compilation.assets[`vendors.${this.base}`]
+
+                if (main && vendor) {
+                    const compiledAsset = new ConcatSource(main.children[0])
+                    compiledAsset.add(vendor)
+                    compiledAsset.add(main.children[1])
+                    compilation.assets = {}
+                    compilation.assets[this.base] = compiledAsset
+                } else if (main && mainMap) {
+                    compilation.assets = {}
+                    compilation.assets[this.base] = main
+                    compilation.assets[`${this.base}.map`] = mainMap
+                }
+                callback()
+            }
+        )
+    }
+}
diff --git a/src/keeper/ContractHandler.ts b/src/keeper/ContractHandler.ts
index 88fbc06..91f2e0f 100644
--- a/src/keeper/ContractHandler.ts
+++ b/src/keeper/ContractHandler.ts
@@ -28,7 +28,7 @@ export default class ContractHandler {
     private static async load(what: string, where: string): Promise<Contract> {
         const web3 = Web3Provider.getWeb3()
         // Logger.log("Loading", what, "from", where)
-        const artifact = require(`@oceanprotocol/keeper-contracts/artifacts/${what}.${where}`)
+        const artifact = require(`@oceanprotocol/keeper-contracts/artifacts/${what}.${where}.json`)
         // Logger.log('Loaded artifact', artifact)
         const code = await web3.eth.getCode(artifact.address)
         if (code === "0x0") {
diff --git a/src/ocean/IdGenerator.ts b/src/ocean/IdGenerator.ts
index 974a2dc..a740f6d 100644
--- a/src/ocean/IdGenerator.ts
+++ b/src/ocean/IdGenerator.ts
@@ -1,4 +1,4 @@
-import * as v4 from "uuid/v4"
+import { v4 } from "uuid"
 
 export default class IdGenerator {
     public static generateId(): string {
diff --git a/tsconfig.json b/tsconfig.json
index 872cfe0..111e8db 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,7 @@
 {
   "compilerOptions": {
     "resolveJsonModule": true,
+    "moduleResolution": "node",
     "lib": [
       "es6",
       "es7"
@@ -11,7 +12,7 @@
     "noImplicitAny": false,
     "removeComments": true,
     "preserveConstEnums": true,
-    "outDir": "./dist/",
+    "outDir": "./dist/node/",
     "rootDir": "./src/",
     "sourceMap": true
   },
diff --git a/webpack.common.js b/webpack.common.js
new file mode 100644
index 0000000..fc00627
--- /dev/null
+++ b/webpack.common.js
@@ -0,0 +1,21 @@
+'use strict'
+
+const { paths } = require('./webpack.parts.js')
+
+module.exports = {
+    entry: paths.entry,
+    mode: 'none',
+    module: {
+        rules: [
+            { test: /\.tsx?$/, loader: "ts-loader" }
+        ]
+    },
+    optimization: {
+        minimize: true,
+        noEmitOnErrors: true
+    },
+    resolve: {
+        extensions: ['.js','.ts'],
+        modules: ['node_modules'],
+    },
+}
diff --git a/webpack.config.js b/webpack.config.js
new file mode 100644
index 0000000..935a7af
--- /dev/null
+++ b/webpack.config.js
@@ -0,0 +1,28 @@
+'use strict'
+
+const PRODUCTION = process.env.NODE_ENV === 'production'
+
+const common = require('./webpack.common.js')
+
+const { outputs } = require('./webpack.parts.js')
+
+// '[libraryTarget]': [file extension]
+const OUTPUT_MAPPING = {
+    'amd': 'amd',
+    'commonjs': 'cjs',
+    'commonjs2': 'cjs2',
+    'umd': 'umd',
+    'window': 'window',
+}
+
+const OVERRIDES = {
+    // optimization: {
+    //     minimize: false
+    // }
+}
+
+if (PRODUCTION) {
+    module.exports = outputs(common, 'production', OUTPUT_MAPPING, OVERRIDES)
+} else {
+    module.exports = outputs(common, 'development', OUTPUT_MAPPING, OVERRIDES)
+}
diff --git a/webpack.development.js b/webpack.development.js
new file mode 100644
index 0000000..d4beb8b
--- /dev/null
+++ b/webpack.development.js
@@ -0,0 +1,28 @@
+'use strict'
+
+const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
+
+module.exports = {
+    devtool: 'inline-source-map',
+    optimization: {
+        minimizer: [
+            new UglifyJsPlugin({
+                test: /vendor/,
+                sourceMap: false,
+            }),
+            new UglifyJsPlugin({
+                test: /^((?!(vendor)).)*.js$/,
+                sourceMap: true,
+            })
+        ],
+        splitChunks: {
+            cacheGroups: {
+                commons: {
+                    test: /[\\/]node_modules[\\/]/,
+                    name: 'vendors',
+                    chunks: 'all'
+                }
+            }
+        },
+    },
+}
diff --git a/webpack.parts.js b/webpack.parts.js
new file mode 100644
index 0000000..dc94126
--- /dev/null
+++ b/webpack.parts.js
@@ -0,0 +1,53 @@
+'use strict'
+
+const path = require('path')
+const merge = require('webpack-merge')
+
+const development = require('./webpack.development.js')
+const production = require('./webpack.production.js')
+
+const AddVendorsPlugin = require('./plugins/add-vendors-plugin')
+
+const paths = {
+    entry: path.resolve(__dirname, './src/squid.ts'),
+    bundle: path.resolve(__dirname, 'dist/browser'),
+}
+
+const outputs = (base, env, mapping, overrides) => {
+    const collection = []
+    const library = 'squid'
+    const windowLibrary = 'Squid'
+
+    let environment = development
+    let ext = 'js'
+
+    if (env === 'production') {
+        environment = production
+        ext = `min.${ext}`
+    }
+
+    Object.entries(mapping).forEach(([target, extension]) => {
+        const filename = `[name].${library}.${extension}.${ext}`
+
+        const compiled = {
+            output: {
+                filename: filename,
+                library: target === 'window' ? windowLibrary : library,
+                libraryTarget: target,
+                path: paths.bundle
+            },
+            plugins: [
+                new AddVendorsPlugin(`${library}.${extension}.${ext}`)
+            ]
+        }
+
+        collection.push(merge(base, environment, compiled, overrides))
+    })
+
+    return collection
+}
+
+module.exports = {
+    outputs,
+    paths
+}
diff --git a/webpack.production.js b/webpack.production.js
new file mode 100644
index 0000000..4b82041
--- /dev/null
+++ b/webpack.production.js
@@ -0,0 +1,5 @@
+'use strict'
+
+module.exports = {
+    devtool: 'source-map',
+}