diff --git a/build/contracts/App.json b/build/contracts/App.json
index eca11300..a75285ce 100644
--- a/build/contracts/App.json
+++ b/build/contracts/App.json
@@ -1490,5 +1490,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.864Z"
+  "updatedAt": "2018-04-24T13:30:35.514Z"
 }
\ No newline at end of file
diff --git a/build/contracts/AppHub.json b/build/contracts/AppHub.json
index feb73249..e5981050 100644
--- a/build/contracts/AppHub.json
+++ b/build/contracts/AppHub.json
@@ -3500,30 +3500,6 @@
     "version": "0.4.21+commit.dfe3193c.Emscripten.clang"
   },
   "networks": {
-    "3": {
-      "events": {
-        "0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "previousOwner",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "newOwner",
-              "type": "address"
-            }
-          ],
-          "name": "OwnershipTransferred",
-          "type": "event"
-        }
-      },
-      "links": {},
-      "address": "0x7f9884f75571e5ace278e71ea9b2f035d71601f3",
-      "transactionHash": "0xae025e17048ceff49be9b9f35c0642443c4f6d1d6dd4b42ca638795227e2a789"
-    },
     "4": {
       "events": {
         "0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0": {
@@ -3545,8 +3521,8 @@
         }
       },
       "links": {},
-      "address": "0x700425c7684e069c27ec3b3784a22025f95c6057",
-      "transactionHash": "0x06fa7774178e9297bf510c524714fcd999ab7790c44965dfaf744e9b0ebccb64"
+      "address": "0x71cb68b0d9bf2b4a03c2caa6ea54773ba413163f",
+      "transactionHash": "0xae81343bafb8a275a59f84a6d20221364b9d37100f450a49792c1c0fc5bbd7f3"
     },
     "42": {
       "events": {
@@ -3569,10 +3545,10 @@
         }
       },
       "links": {},
-      "address": "0x2a3827b9f8d5aaf187eb2aeaa60b3bf2e1306475",
-      "transactionHash": "0x222fbb484370bea62e90bdc12a1c12ed107e0135588f87851be74c9445d52d48"
+      "address": "0xab9f3c7737caa21421046f0d453ef792c9d9667c",
+      "transactionHash": "0x1b49c194175d9debed9c88760e6994f0026d2fc302efdadf0bf7729f9b0464a1"
     }
   },
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:44:21.670Z"
+  "updatedAt": "2018-04-24T13:47:21.810Z"
 }
\ No newline at end of file
diff --git a/build/contracts/Dataset.json b/build/contracts/Dataset.json
index 6acc523d..bda0dab8 100644
--- a/build/contracts/Dataset.json
+++ b/build/contracts/Dataset.json
@@ -1490,5 +1490,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.865Z"
+  "updatedAt": "2018-04-24T13:30:35.515Z"
 }
\ No newline at end of file
diff --git a/build/contracts/DatasetHub.json b/build/contracts/DatasetHub.json
index cb867ac7..3347cb00 100644
--- a/build/contracts/DatasetHub.json
+++ b/build/contracts/DatasetHub.json
@@ -3500,30 +3500,6 @@
     "version": "0.4.21+commit.dfe3193c.Emscripten.clang"
   },
   "networks": {
-    "3": {
-      "events": {
-        "0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "previousOwner",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "newOwner",
-              "type": "address"
-            }
-          ],
-          "name": "OwnershipTransferred",
-          "type": "event"
-        }
-      },
-      "links": {},
-      "address": "0x97f2f83bfbf3bf9b9f641204ace4ba6cfe8f3c3e",
-      "transactionHash": "0x2ee1aeb9027d9420ef79e393815d42333353be2381ffa0c2ec5516bfd3792c14"
-    },
     "4": {
       "events": {
         "0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0": {
@@ -3545,8 +3521,8 @@
         }
       },
       "links": {},
-      "address": "0xc6ce0a9928ac8da11e34c7f8ac174af058162295",
-      "transactionHash": "0x5cf4c4c290a0b88f8e568c0bb9869b07f37ec9c8aff5b2d5a6b58d1385d97493"
+      "address": "0x07e12c896a86c54ad0a068fca5f0d0cd9e02aba0",
+      "transactionHash": "0xbb70e28561843a385dc2afdf2baa81da69769e46f536ec9f1fd72dd34373bc98"
     },
     "42": {
       "events": {
@@ -3569,10 +3545,10 @@
         }
       },
       "links": {},
-      "address": "0x9542f1373ff375f5c6213a761e97c3ea6eb91cad",
-      "transactionHash": "0x72cd7fbf9a9c4863ef96c2806e159befc6c72806b832e0aff675f977691d2bdc"
+      "address": "0x4d4f1096e353b288b7f815a3c0bb878b3e0fa930",
+      "transactionHash": "0xbfb5913f0a958aa892366bffb12a12ea9da5a69a1448d6db093ee829b73d336e"
     }
   },
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:44:21.673Z"
+  "updatedAt": "2018-04-24T13:47:21.813Z"
 }
\ No newline at end of file
diff --git a/build/contracts/ERC20.json b/build/contracts/ERC20.json
index e4caad8e..85adc1f4 100644
--- a/build/contracts/ERC20.json
+++ b/build/contracts/ERC20.json
@@ -1795,5 +1795,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.903Z"
+  "updatedAt": "2018-04-24T13:30:35.542Z"
 }
\ No newline at end of file
diff --git a/build/contracts/IexecAPI.json b/build/contracts/IexecAPI.json
index 2df9e644..28533346 100644
--- a/build/contracts/IexecAPI.json
+++ b/build/contracts/IexecAPI.json
@@ -6460,5 +6460,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.866Z"
+  "updatedAt": "2018-04-24T13:30:35.515Z"
 }
\ No newline at end of file
diff --git a/build/contracts/IexecCallbackInterface.json b/build/contracts/IexecCallbackInterface.json
index 7135cfb6..72362f22 100644
--- a/build/contracts/IexecCallbackInterface.json
+++ b/build/contracts/IexecCallbackInterface.json
@@ -722,5 +722,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.867Z"
+  "updatedAt": "2018-04-24T13:30:35.516Z"
 }
\ No newline at end of file
diff --git a/build/contracts/IexecHub.json b/build/contracts/IexecHub.json
index 2ef5d822..4d742fcb 100644
--- a/build/contracts/IexecHub.json
+++ b/build/contracts/IexecHub.json
@@ -46931,330 +46931,6 @@
     "version": "0.4.21+commit.dfe3193c.Emscripten.clang"
   },
   "networks": {
-    "3": {
-      "events": {
-        "0x359f2105b31d71ee8e2315c3dc3427b3f7297dcc85dd3883d4554e67f1f22d00": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "woid",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "workerPool",
-              "type": "address"
-            }
-          ],
-          "name": "WorkOrderActivated",
-          "type": "event"
-        },
-        "0xb3cae8ec1c2754530963fb2e254826aae88dda74178f1a0c5656776941e604b8": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "woid",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "workerPool",
-              "type": "address"
-            }
-          ],
-          "name": "WorkOrderClaimed",
-          "type": "event"
-        },
-        "0xed236d0a24cb7a32c76960696e44bac711b80ef76780688405dc96c2495b75f9": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "woid",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "workerPool",
-              "type": "address"
-            }
-          ],
-          "name": "WorkOrderCompleted",
-          "type": "event"
-        },
-        "0x03d3b6187bbe7d21aa3cf229e292ba41fa8bca6ec2128c0f1625178b8191cdc2": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "appOwner",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "app",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "appName",
-              "type": "string"
-            },
-            {
-              "indexed": false,
-              "name": "appPrice",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "appParams",
-              "type": "string"
-            }
-          ],
-          "name": "CreateApp",
-          "type": "event"
-        },
-        "0x49413c774d3fe9c92f6ada69299963d9b4b1c13a1f2a95a019188e2c161ed143": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "datasetOwner",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "dataset",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "datasetName",
-              "type": "string"
-            },
-            {
-              "indexed": false,
-              "name": "datasetPrice",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "datasetParams",
-              "type": "string"
-            }
-          ],
-          "name": "CreateDataset",
-          "type": "event"
-        },
-        "0x3c29f4ff1e741e465a1ad9cc4c0b8e51c046c021ca9e77172d812ae667f566f8": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "workerPoolOwner",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "workerPool",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "workerPoolDescription",
-              "type": "string"
-            }
-          ],
-          "name": "CreateWorkerPool",
-          "type": "event"
-        },
-        "0x62bf08360c9d561749c54eaf4f8bf8cb6c8b6f4f40607bcec39a8172e714d25c": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "catid",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "name",
-              "type": "string"
-            },
-            {
-              "indexed": false,
-              "name": "description",
-              "type": "string"
-            },
-            {
-              "indexed": false,
-              "name": "workClockTimeRef",
-              "type": "uint256"
-            }
-          ],
-          "name": "CreateCategory",
-          "type": "event"
-        },
-        "0xd3548f8b6a2a11c4a35ef5a16dbf7142c9db5163c7d46e7f66482664277cff07": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "workerPool",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "worker",
-              "type": "address"
-            }
-          ],
-          "name": "WorkerPoolSubscription",
-          "type": "event"
-        },
-        "0x9644170e77fec17243f5fdc3519cba6d2162d1dda59af75508fd9a2005aeb784": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "workerPool",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "worker",
-              "type": "address"
-            }
-          ],
-          "name": "WorkerPoolUnsubscription",
-          "type": "event"
-        },
-        "0x5580db655b3146ef4d1fdba3305cf74dbc3f29126c7a3832533f84e00d149ee3": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "workerPool",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "worker",
-              "type": "address"
-            }
-          ],
-          "name": "WorkerPoolEviction",
-          "type": "event"
-        },
-        "0x98b231d22df4a95e9d99b5d3f4d25fab5a821c22d7f517a522731c2892ed4535": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "woid",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "worker",
-              "type": "address"
-            }
-          ],
-          "name": "AccurateContribution",
-          "type": "event"
-        },
-        "0xd21e70eb7104cb6f403402b79fe1c088dc56b69ecb7474ae68a3e861a5a6d499": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "woid",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "worker",
-              "type": "address"
-            }
-          ],
-          "name": "FaultyContribution",
-          "type": "event"
-        },
-        "0xe1fffcc4923d04b559f4d29a8bfc6cda04eb5b0d3c460751c2402c5c5cc9109c": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "owner",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "amount",
-              "type": "uint256"
-            }
-          ],
-          "name": "Deposit",
-          "type": "event"
-        },
-        "0x884edad9ce6fa2440d8a54cc123490eb96d2768479d49ff9c7366125a9424364": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "owner",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "amount",
-              "type": "uint256"
-            }
-          ],
-          "name": "Withdraw",
-          "type": "event"
-        },
-        "0x619caafabdd75649b302ba8419e48cccf64f37f1983ac4727cfb38b57703ffc9": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "user",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "amount",
-              "type": "uint256"
-            }
-          ],
-          "name": "Reward",
-          "type": "event"
-        },
-        "0x4051ba94e08bb094159fc38391422b4b8ccfd2b1f8919c0eb37bb042d4b9cd8e": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "user",
-              "type": "address"
-            },
-            {
-              "indexed": false,
-              "name": "amount",
-              "type": "uint256"
-            }
-          ],
-          "name": "Seize",
-          "type": "event"
-        }
-      },
-      "links": {},
-      "address": "0x8bbf09dc4514077b60a45cbd6d8294111534500d",
-      "transactionHash": "0x6d78bf5941175a90e47bcc48c4ada49012632ec57178a420fb43d59b5810955d"
-    },
     "4": {
       "events": {
         "0x359f2105b31d71ee8e2315c3dc3427b3f7297dcc85dd3883d4554e67f1f22d00": {
@@ -47576,8 +47252,8 @@
         }
       },
       "links": {},
-      "address": "0x374bb77dd977716f813b820f5737cfc9a7a7aa05",
-      "transactionHash": "0xf5247ed94fa4ae172b9a9f830aac8ca799b94af3f8bc185bc3fd2117ead1f50f"
+      "address": "0x0439c512222d00c0e197d9b4f8bce6198a9902e4",
+      "transactionHash": "0x84a1182aa50da0649342b54ad837bf37dcb9c46ccd7d6547391e4a5daee77638"
     },
     "42": {
       "events": {
@@ -47900,10 +47576,10 @@
         }
       },
       "links": {},
-      "address": "0xb6c77a4a16cc3373a46f1d143c67f09127a6a086",
-      "transactionHash": "0x8f48edb65d695eff021a68bdb3f4d8834d79d0ad0a1564902ad9105f6c908306"
+      "address": "0xd6fac685e694fcfb60738fa50bac7cd4c0bad7db",
+      "transactionHash": "0x53392c4d4a16a723751578c32e9045e466a37a894e8c964375d53a7104922f85"
     }
   },
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:44:21.737Z"
+  "updatedAt": "2018-04-24T13:47:21.855Z"
 }
\ No newline at end of file
diff --git a/build/contracts/IexecHubAccessor.json b/build/contracts/IexecHubAccessor.json
index 01c68181..b49e4ed0 100644
--- a/build/contracts/IexecHubAccessor.json
+++ b/build/contracts/IexecHubAccessor.json
@@ -1131,5 +1131,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.874Z"
+  "updatedAt": "2018-04-24T13:30:35.524Z"
 }
\ No newline at end of file
diff --git a/build/contracts/IexecHubInterface.json b/build/contracts/IexecHubInterface.json
index 4ad12f1c..1be74efc 100644
--- a/build/contracts/IexecHubInterface.json
+++ b/build/contracts/IexecHubInterface.json
@@ -9472,5 +9472,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.875Z"
+  "updatedAt": "2018-04-24T13:30:35.524Z"
 }
\ No newline at end of file
diff --git a/build/contracts/IexecLib.json b/build/contracts/IexecLib.json
index b9110308..184e9144 100644
--- a/build/contracts/IexecLib.json
+++ b/build/contracts/IexecLib.json
@@ -2089,5 +2089,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.876Z"
+  "updatedAt": "2018-04-24T13:30:35.525Z"
 }
\ No newline at end of file
diff --git a/build/contracts/Marketplace.json b/build/contracts/Marketplace.json
index 319ecdcf..cdfb2c2b 100644
--- a/build/contracts/Marketplace.json
+++ b/build/contracts/Marketplace.json
@@ -12523,25 +12523,19 @@
     "version": "0.4.21+commit.dfe3193c.Emscripten.clang"
   },
   "networks": {
-    "3": {
-      "events": {},
-      "links": {},
-      "address": "0xdc61f092704dc567be178323a951edd59bde4736",
-      "transactionHash": "0x75198166e7e4b6f512154c27238dc5769ddfbc054ba1fa584c5856139042a008"
-    },
     "4": {
       "events": {},
       "links": {},
-      "address": "0x446ff67e20cdffcd427946cc3b6fa9ec411bf5c3",
-      "transactionHash": "0x1a0a2f0e05e969cd0887a8d4113c6824f602e3bc55613307c95cc48bdd35a494"
+      "address": "0xfdb29ec352ad5efea3fad3cf1eeb6f9e61a1c1c7",
+      "transactionHash": "0xf33d9f86bd2ad148266888584474820ca71fc78176aaad827428e5579a1d2421"
     },
     "42": {
       "events": {},
       "links": {},
-      "address": "0xf7ef6b1052ad2d7a8400cb2a9bfec1dd5e1eac90",
-      "transactionHash": "0x3ee5152dc2ba18cbadfb33ad8845277718e755c685b07de4229b0fb3600097c7"
+      "address": "0x32aedc290604f7a674781b232143b837a358d711",
+      "transactionHash": "0xa13fbf77364049cc20126a520dd578fbc6d774eeb2a05c53b66fb0c64a9e45a2"
     }
   },
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:44:21.690Z"
+  "updatedAt": "2018-04-24T13:47:21.826Z"
 }
\ No newline at end of file
diff --git a/build/contracts/MarketplaceAccessor.json b/build/contracts/MarketplaceAccessor.json
index a16240d9..86d96f6d 100644
--- a/build/contracts/MarketplaceAccessor.json
+++ b/build/contracts/MarketplaceAccessor.json
@@ -875,5 +875,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.879Z"
+  "updatedAt": "2018-04-24T13:30:35.528Z"
 }
\ No newline at end of file
diff --git a/build/contracts/MarketplaceInterface.json b/build/contracts/MarketplaceInterface.json
index 92506346..5cf43e25 100644
--- a/build/contracts/MarketplaceInterface.json
+++ b/build/contracts/MarketplaceInterface.json
@@ -2037,5 +2037,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.879Z"
+  "updatedAt": "2018-04-24T13:30:35.528Z"
 }
\ No newline at end of file
diff --git a/build/contracts/Migrations.json b/build/contracts/Migrations.json
index a26b8dde..4223a688 100644
--- a/build/contracts/Migrations.json
+++ b/build/contracts/Migrations.json
@@ -1375,25 +1375,19 @@
     "version": "0.4.21+commit.dfe3193c.Emscripten.clang"
   },
   "networks": {
-    "3": {
-      "events": {},
-      "links": {},
-      "address": "0x670ed4bb1fd989cfaae1b6e508663f9174e74901",
-      "transactionHash": "0x1a2c06cad52560461769f84f7cc05504d371f3f90923d75c5188bf8f108e899a"
-    },
     "4": {
       "events": {},
       "links": {},
-      "address": "0x5c5de6b1b80eee8e1431824e3931f853d0fedc0b",
-      "transactionHash": "0xad6d3e61ba7c2fc335f14644f0285d3cb966b201981335ab1cd9211851882842"
+      "address": "0x45cbd2d0e9a913f17669f226727b1849ff7bfcb7",
+      "transactionHash": "0x13171ebc1d23e5e5033c536e69021e6d56418cbd472f0cc66f796a6478bcf8b4"
     },
     "42": {
       "events": {},
       "links": {},
-      "address": "0x6a6446fd53ff278e8e08ea97d6f85802bc0061fd",
-      "transactionHash": "0x361324899f441d4cc6ebcee0e207231f373bd658633ab28923c7370afd4859b0"
+      "address": "0x76b8c862234eb74aaa030c68f01c8d4baaeee5ee",
+      "transactionHash": "0xba892965edfbf968f96a19b1de8796241791cd8851f151da53d1cffb61c9e0be"
     }
   },
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:44:21.681Z"
+  "updatedAt": "2018-04-24T13:47:21.816Z"
 }
\ No newline at end of file
diff --git a/build/contracts/Ownable.json b/build/contracts/Ownable.json
index 44adeeb2..081418eb 100644
--- a/build/contracts/Ownable.json
+++ b/build/contracts/Ownable.json
@@ -1006,5 +1006,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.904Z"
+  "updatedAt": "2018-04-24T13:30:35.544Z"
 }
\ No newline at end of file
diff --git a/build/contracts/OwnableOZ.json b/build/contracts/OwnableOZ.json
index d0bf61bf..107e4983 100644
--- a/build/contracts/OwnableOZ.json
+++ b/build/contracts/OwnableOZ.json
@@ -1443,5 +1443,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.879Z"
+  "updatedAt": "2018-04-24T13:30:35.528Z"
 }
\ No newline at end of file
diff --git a/build/contracts/RLC.json b/build/contracts/RLC.json
index 38ebab69..03fd31d4 100644
--- a/build/contracts/RLC.json
+++ b/build/contracts/RLC.json
@@ -8719,5 +8719,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:44:21.683Z"
+  "updatedAt": "2018-04-24T13:47:21.819Z"
 }
\ No newline at end of file
diff --git a/build/contracts/SafeMath.json b/build/contracts/SafeMath.json
index 1b82b5e0..7cd0cc4e 100644
--- a/build/contracts/SafeMath.json
+++ b/build/contracts/SafeMath.json
@@ -4975,5 +4975,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.906Z"
+  "updatedAt": "2018-04-24T13:30:35.545Z"
 }
\ No newline at end of file
diff --git a/build/contracts/SafeMathOZ.json b/build/contracts/SafeMathOZ.json
index 25c4492f..06e81a13 100644
--- a/build/contracts/SafeMathOZ.json
+++ b/build/contracts/SafeMathOZ.json
@@ -5033,5 +5033,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.880Z"
+  "updatedAt": "2018-04-24T13:30:35.529Z"
 }
\ No newline at end of file
diff --git a/build/contracts/TestSha.json b/build/contracts/TestSha.json
index 6c0e29d8..09c74e69 100644
--- a/build/contracts/TestSha.json
+++ b/build/contracts/TestSha.json
@@ -2778,5 +2778,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.880Z"
+  "updatedAt": "2018-04-24T13:30:35.529Z"
 }
\ No newline at end of file
diff --git a/build/contracts/TokenSpender.json b/build/contracts/TokenSpender.json
index 5131800e..9c84b187 100644
--- a/build/contracts/TokenSpender.json
+++ b/build/contracts/TokenSpender.json
@@ -390,5 +390,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.907Z"
+  "updatedAt": "2018-04-24T13:30:35.546Z"
 }
\ No newline at end of file
diff --git a/build/contracts/WorkOrder.json b/build/contracts/WorkOrder.json
index 83f14613..fc16762e 100644
--- a/build/contracts/WorkOrder.json
+++ b/build/contracts/WorkOrder.json
@@ -7536,5 +7536,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.881Z"
+  "updatedAt": "2018-04-24T13:30:35.530Z"
 }
\ No newline at end of file
diff --git a/build/contracts/WorkerPool.json b/build/contracts/WorkerPool.json
index c8b9f2ac..f5c87136 100644
--- a/build/contracts/WorkerPool.json
+++ b/build/contracts/WorkerPool.json
@@ -46772,5 +46772,5 @@
   },
   "networks": {},
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:13:40.882Z"
+  "updatedAt": "2018-04-24T13:30:35.531Z"
 }
\ No newline at end of file
diff --git a/build/contracts/WorkerPoolHub.json b/build/contracts/WorkerPoolHub.json
index 63a7303b..a2ba3ac9 100644
--- a/build/contracts/WorkerPoolHub.json
+++ b/build/contracts/WorkerPoolHub.json
@@ -5657,30 +5657,6 @@
     "version": "0.4.21+commit.dfe3193c.Emscripten.clang"
   },
   "networks": {
-    "3": {
-      "events": {
-        "0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "previousOwner",
-              "type": "address"
-            },
-            {
-              "indexed": true,
-              "name": "newOwner",
-              "type": "address"
-            }
-          ],
-          "name": "OwnershipTransferred",
-          "type": "event"
-        }
-      },
-      "links": {},
-      "address": "0x3fb50bb0716e0967c2c76599aad214b62b9b74c8",
-      "transactionHash": "0x279013f3b1dbd073a8cdd5d1c32c3a37535a450c1e9b78e21a472ace3911c8d9"
-    },
     "4": {
       "events": {
         "0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0": {
@@ -5702,8 +5678,8 @@
         }
       },
       "links": {},
-      "address": "0x201d5e5bb4e865be7f9a84ff0f12a1ca1980dcbd",
-      "transactionHash": "0xf058caf372d72302d3efb70a9ac323f803d8b80087f352bd1fdb0b6f0718c64c"
+      "address": "0xce72d26a3bf413c76254e6d6af9745ff11383135",
+      "transactionHash": "0x3db74ce812efda0e43c9bb3105c59116f116f9797e55d3231e0a8cf4d86fbddb"
     },
     "42": {
       "events": {
@@ -5726,10 +5702,10 @@
         }
       },
       "links": {},
-      "address": "0x4f9aaf6f6244cdee53c8147eb2839aeae548a207",
-      "transactionHash": "0x04097a44fd9a1078aeb9f182bc91b42c0b799373f7593afc92e8c3a532d794bb"
+      "address": "0x09e045d87158a06035d0204d13cc9199779a233d",
+      "transactionHash": "0xcfe9554fa8a29889afd7a25dd50a308549f7512b9706f18a6abe0361946abe19"
     }
   },
   "schemaVersion": "2.0.0",
-  "updatedAt": "2018-04-12T21:44:21.676Z"
+  "updatedAt": "2018-04-24T13:47:21.806Z"
 }
\ No newline at end of file
diff --git a/config/categories.json b/config/categories.json
index 6f39289f..bb9ff1a1 100644
--- a/config/categories.json
+++ b/config/categories.json
@@ -1,51 +1,38 @@
 {
   "categories": [{
-      "name": "Mega",
+      "name": "1",
       "description": {
-        "in": "100mo",
-        "out": "100mo"
+        "io": "10mo"
       },
-      "workClockTimeRef": 120
-    },
-    {
-      "name": "MegaPlus",
-      "description": {
-        "in": "512mo",
-        "out": "512mo"
-      },
-      "workClockTimeRef": 300
+      "workClockTimeRef": 30
     },
     {
-      "name": "Giga",
+      "name": "2",
       "description": {
-        "in": "1Go",
-        "out": "1Go"
+        "io": "100mo"
       },
-      "workClockTimeRef": 1800
+      "workClockTimeRef": 120
     },
     {
-      "name": "GigaPlus",
+      "name": "3",
       "description": {
-        "in": "5Go",
-        "out": "5Go"
+        "io": "250mo"
       },
-      "workClockTimeRef": 3600
+      "workClockTimeRef": 900
     },
     {
-      "name": "GigaGrande",
+      "name": "4",
       "description": {
-        "in": "250go",
-        "out": "250go"
+        "io": "500mo"
       },
-      "workClockTimeRef": 18000
+      "workClockTimeRef": 1800
     },
     {
-      "name": "GigaMax",
+      "name": "5",
       "description": {
-        "in": "500go",
-        "out": "500go"
+        "io": "1go"
       },
-      "workClockTimeRef": 36000
+      "workClockTimeRef": 3600
     }
   ]
 }
diff --git a/migrations/2_deploy_contracts.js b/migrations/2_deploy_contracts.js
index 5e950e3e..74427789 100644
--- a/migrations/2_deploy_contracts.js
+++ b/migrations/2_deploy_contracts.js
@@ -12,7 +12,6 @@ const readFileAsync = Promise.promisify(fs.readFile);
 // Contracts FULL DEV DEPLOY with new RLC token created
 
 **/
-
 module.exports = function(deployer) {
   let aRLCInstance;
   let aWorkerPoolHubInstance;
@@ -202,15 +201,10 @@ module.exports = function(deployer) {
       console.log("create category : "+categoriesConfigFileJson.categories[4].name);
       return aIexecHub.createCategory(categoriesConfigFileJson.categories[4].name,JSON.stringify(categoriesConfigFileJson.categories[4].description),categoriesConfigFileJson.categories[4].workClockTimeRef);
     })
-    .then(categoriesCreated => {
-      console.log("create category : "+categoriesConfigFileJson.categories[5].name);
-      return aIexecHub.createCategory(categoriesConfigFileJson.categories[5].name,JSON.stringify(categoriesConfigFileJson.categories[5].description),categoriesConfigFileJson.categories[5].workClockTimeRef);
-    })
     .then(categoriesCreated => {
       return aIexecHub.m_categoriesCount.call()
     })
     .then(m_categoriesCount => console.log("m_categoriesCount is now: "+m_categoriesCount))
     ;
 
-};
-*/
+};*/
diff --git a/test/byFunctions/WorkerPool/emitWorkOrder.js b/test/byFunctions/WorkerPool/emitWorkOrder.js
index e6328a83..b5a69e48 100644
--- a/test/byFunctions/WorkerPool/emitWorkOrder.js
+++ b/test/byFunctions/WorkerPool/emitWorkOrder.js
@@ -295,11 +295,11 @@ contract('IexecHub', function(accounts) {
       from: iExecCloudUser,
       gas:constants.AMOUNT_GAS_PROVIDED
     });
-    assert.strictEqual(getCategoryWorkClockTimeRefCall.toNumber(), 120, "check getCategoryWorkClockTimeRef for cat 1 =120 sec");
+    assert.strictEqual(getCategoryWorkClockTimeRefCall.toNumber(), 30, "check getCategoryWorkClockTimeRef for cat 1 =30 sec");
 
-    assert.strictEqual(timestamp+(getCategoryWorkClockTimeRefCall.toNumber()*10), timestamp+1200, "consensusTimout =  blocktime + 120 *10");
+    assert.strictEqual(timestamp+(getCategoryWorkClockTimeRefCall.toNumber()*10), timestamp+300, "consensusTimout =  blocktime + 30 *10");
     //console.log(timestamp+600);
-    assert.strictEqual(timestamp+(getCategoryWorkClockTimeRefCall.toNumber()*10), consensusTimout.toNumber(), "consensusTimout =  blocktime + 120 *5");
+    assert.strictEqual(timestamp+(getCategoryWorkClockTimeRefCall.toNumber()*10), consensusTimout.toNumber(), "consensusTimout =  blocktime + 30 *5");
 
     assert.strictEqual(winnerCount.toNumber(), 0, "check no winnerCount");
 
diff --git a/truffle-hdwallet.js b/truffle-hdwallet.js
index 912d2802..5c511e75 100644
--- a/truffle-hdwallet.js
+++ b/truffle-hdwallet.js
@@ -81,57 +81,55 @@ Saving artifacts...
 
       Running migration: 1_initial_migration.js
         Deploying Migrations...
-        ... 0xad6d3e61ba7c2fc335f14644f0285d3cb966b201981335ab1cd9211851882842
-        Migrations: 0x5c5de6b1b80eee8e1431824e3931f853d0fedc0b
+        ... 0x13171ebc1d23e5e5033c536e69021e6d56418cbd472f0cc66f796a6478bcf8b4
+        Migrations: 0x45cbd2d0e9a913f17669f226727b1849ff7bfcb7
       Saving successful migration to network...
-        ... 0x95fafef424840b34950beef3c8074bfaccb8c1ccb2a47391cac08c6a655f3e1a
+        ... 0x22585c3899a99ad6547c48d109621fb73fbea1006f72c5eb22bcc323286f31e6
       Saving artifacts...
       Running migration: 2_deploy_contracts.js
         Deploying WorkerPoolHub...
-        ... 0xf058caf372d72302d3efb70a9ac323f803d8b80087f352bd1fdb0b6f0718c64c
-        WorkerPoolHub: 0x201d5e5bb4e865be7f9a84ff0f12a1ca1980dcbd
-      WorkerPoolHub deployed at address: 0x201d5e5bb4e865be7f9a84ff0f12a1ca1980dcbd
+        ... 0x3db74ce812efda0e43c9bb3105c59116f116f9797e55d3231e0a8cf4d86fbddb
+        WorkerPoolHub: 0xce72d26a3bf413c76254e6d6af9745ff11383135
+      WorkerPoolHub deployed at address: 0xce72d26a3bf413c76254e6d6af9745ff11383135
         Deploying AppHub...
-        ... 0x06fa7774178e9297bf510c524714fcd999ab7790c44965dfaf744e9b0ebccb64
-        AppHub: 0x700425c7684e069c27ec3b3784a22025f95c6057
-      AppHub deployed at address: 0x700425c7684e069c27ec3b3784a22025f95c6057
+        ... 0xae81343bafb8a275a59f84a6d20221364b9d37100f450a49792c1c0fc5bbd7f3
+        AppHub: 0x71cb68b0d9bf2b4a03c2caa6ea54773ba413163f
+      AppHub deployed at address: 0x71cb68b0d9bf2b4a03c2caa6ea54773ba413163f
         Deploying DatasetHub...
-        ... 0x5cf4c4c290a0b88f8e568c0bb9869b07f37ec9c8aff5b2d5a6b58d1385d97493
-        DatasetHub: 0xc6ce0a9928ac8da11e34c7f8ac174af058162295
-      DatasetHub deployed at address: 0xc6ce0a9928ac8da11e34c7f8ac174af058162295
+        ... 0xbb70e28561843a385dc2afdf2baa81da69769e46f536ec9f1fd72dd34373bc98
+        DatasetHub: 0x07e12c896a86c54ad0a068fca5f0d0cd9e02aba0
+      DatasetHub deployed at address: 0x07e12c896a86c54ad0a068fca5f0d0cd9e02aba0
         Deploying IexecHub...
-        ... 0xf5247ed94fa4ae172b9a9f830aac8ca799b94af3f8bc185bc3fd2117ead1f50f
-        IexecHub: 0x374bb77dd977716f813b820f5737cfc9a7a7aa05
-      IexecHub deployed at address: 0x374bb77dd977716f813b820f5737cfc9a7a7aa05
-        ... 0x94ad95c7e80f69a4c4f7762811a0467e961cafd9f4f41e4c3185a41fd14e5693
+        ... 0x84a1182aa50da0649342b54ad837bf37dcb9c46ccd7d6547391e4a5daee77638
+        IexecHub: 0x0439c512222d00c0e197d9b4f8bce6198a9902e4
+      IexecHub deployed at address: 0x0439c512222d00c0e197d9b4f8bce6198a9902e4
+        ... 0xcf672d6dcac0ec9105ea0a324a90f30b8229e34883b02a834ec72c4c16cce33d
       transferOwnership of WorkerPoolHub to IexecHub
-        ... 0x2c205da845a051c60bbefdc3895959a4886ad2a7290280a67257f0319c1c58a7
+        ... 0x6547118e2fc0be1f2d8c44a8c1f335a9293100f814ddd66a1584580b9bf1af48
       transferOwnership of AppHub to IexecHub
-        ... 0x233a9bb5c643b0b1e471d5e1b04b07284aefd30b6ab14acc0fb04986e839f02f
+        ... 0x12d9d882199d0a67a24085ccaace9bbe821021ab55ec051fc951615925b854a5
       transferOwnership of DatasetHub to IexecHub
         Deploying Marketplace...
-        ... 0x1a0a2f0e05e969cd0887a8d4113c6824f602e3bc55613307c95cc48bdd35a494
-        Marketplace: 0x446ff67e20cdffcd427946cc3b6fa9ec411bf5c3
-      Marketplace deployed at address: 0x446ff67e20cdffcd427946cc3b6fa9ec411bf5c3
-        ... 0xdcc1f194ec32690756f2e998c597fb7eee7468c22fd887cf2719ef911e056660
+        ... 0xf33d9f86bd2ad148266888584474820ca71fc78176aaad827428e5579a1d2421
+        Marketplace: 0xfdb29ec352ad5efea3fad3cf1eeb6f9e61a1c1c7
+      Marketplace deployed at address: 0xfdb29ec352ad5efea3fad3cf1eeb6f9e61a1c1c7
+        ... 0x64a2ea020d7c63d9f1cc32fececa6385256542631ecc275dd1641fd0eef900dd
       attach Contracts to IexecHub done
-        ... 0x589a1ef5e1029d39719680cf708e2bf188b27d7ecf7f708adac602ec398b415a
+        ... 0x7d4e46de74449f36a5c067a2730eff136f162c27f363318987ee098608408f7a
       setCategoriesCreator to 0xcd7CcF952E0482ca41b46c6BBAd3A1852faD69dC
-      create category : Mega
-        ... 0xf8ef1e7f49b3bded46ba07a6544852c656d6e62b65236b219a306362ea323ae4
-      create category : MegaPlus
-        ... 0x8631d4430758979c18583dfaae4827f4d354276fea0b5ac1de7a87c48b4b1dd8
-      create category : Giga
-        ... 0x7b85bbab7a6892d160e52bea9b54f1b471cfdfac8874fb1d7e12e3cf095be418
-      create category : GigaPlus
-        ... 0x7206e94cc1f929305bbe2ef29cc863f32ba5018545f497ddb40ae27995ff6478
-      create category : GigaGrande
-        ... 0x21fe3027d572b13d999b8f6e863a4f33040871d3438455328a13f18f8ce3b157
-      create category : GigaMax
-        ... 0xe2db7a9faedb4abcd87bd011f4314462e5b7714d9e3550f151f93209c3ab3b8d
-      m_categoriesCount is now: 6
+      create category : 1
+        ... 0xb26231545fa9c49491bb9e264abe07e7db1dfa7649ee6a99dba30d6ca538f81d
+      create category : 2
+        ... 0x1e252ff8857710990be91fef28088ac220008f3c810642753759b63cea912a20
+      create category : 3
+        ... 0x25b1d2e75350e1ae19d25d828efe140e464eb67bd73fa63e966f11af1c77aa05
+      create category : 4
+        ... 0x81cbc28d564675748defa7c5425e827a51b80a0cd2755d2920d8e1b958af90ad
+      create category : 5
+        ... 0x9ac6b88e1a345a2e21c71cf1f8740c0f06644df14e3d80be6b6b93ec8f2632e4
+      m_categoriesCount is now: 5
       Saving successful migration to network...
-        ... 0xac25b2960c1c3d4e67dc6ab133e81bf1e5ba694deb93dd0a41f821a1d043c8ab
+        ... 0x043526e478270f90fdb2c949de758d2d33f322b7833ac0d8020087e31b319193
       Saving artifacts...
       */
     },
@@ -145,57 +143,55 @@ Saving artifacts...
 
       Running migration: 1_initial_migration.js
         Deploying Migrations...
-        ... 0x361324899f441d4cc6ebcee0e207231f373bd658633ab28923c7370afd4859b0
-        Migrations: 0x6a6446fd53ff278e8e08ea97d6f85802bc0061fd
+        ... 0xba892965edfbf968f96a19b1de8796241791cd8851f151da53d1cffb61c9e0be
+        Migrations: 0x76b8c862234eb74aaa030c68f01c8d4baaeee5ee
       Saving successful migration to network...
-        ... 0x98d93a02a5940cf863407a3997542c1983c9f21f2634aca6ac47df93a7b83a67
+        ... 0xc5d72ca17f82ec08696e349ad6ef5f244e6d2d7458b4cd519176e1915764ba86
       Saving artifacts...
       Running migration: 2_deploy_contracts.js
         Deploying WorkerPoolHub...
-        ... 0x04097a44fd9a1078aeb9f182bc91b42c0b799373f7593afc92e8c3a532d794bb
-        WorkerPoolHub: 0x4f9aaf6f6244cdee53c8147eb2839aeae548a207
-      WorkerPoolHub deployed at address: 0x4f9aaf6f6244cdee53c8147eb2839aeae548a207
+        ... 0xcfe9554fa8a29889afd7a25dd50a308549f7512b9706f18a6abe0361946abe19
+        WorkerPoolHub: 0x09e045d87158a06035d0204d13cc9199779a233d
+      WorkerPoolHub deployed at address: 0x09e045d87158a06035d0204d13cc9199779a233d
         Deploying AppHub...
-        ... 0x222fbb484370bea62e90bdc12a1c12ed107e0135588f87851be74c9445d52d48
-        AppHub: 0x2a3827b9f8d5aaf187eb2aeaa60b3bf2e1306475
-      AppHub deployed at address: 0x2a3827b9f8d5aaf187eb2aeaa60b3bf2e1306475
+        ... 0x1b49c194175d9debed9c88760e6994f0026d2fc302efdadf0bf7729f9b0464a1
+        AppHub: 0xab9f3c7737caa21421046f0d453ef792c9d9667c
+      AppHub deployed at address: 0xab9f3c7737caa21421046f0d453ef792c9d9667c
         Deploying DatasetHub...
-        ... 0x72cd7fbf9a9c4863ef96c2806e159befc6c72806b832e0aff675f977691d2bdc
-        DatasetHub: 0x9542f1373ff375f5c6213a761e97c3ea6eb91cad
-      DatasetHub deployed at address: 0x9542f1373ff375f5c6213a761e97c3ea6eb91cad
+        ... 0xbfb5913f0a958aa892366bffb12a12ea9da5a69a1448d6db093ee829b73d336e
+        DatasetHub: 0x4d4f1096e353b288b7f815a3c0bb878b3e0fa930
+      DatasetHub deployed at address: 0x4d4f1096e353b288b7f815a3c0bb878b3e0fa930
         Deploying IexecHub...
-        ... 0x8f48edb65d695eff021a68bdb3f4d8834d79d0ad0a1564902ad9105f6c908306
-        IexecHub: 0xb6c77a4a16cc3373a46f1d143c67f09127a6a086
-      IexecHub deployed at address: 0xb6c77a4a16cc3373a46f1d143c67f09127a6a086
-        ... 0xc70c2a19fe626f65ba2e7791c95c1642ff1f0cb3de2d580d2bedc99ba054bbac
+        ... 0x53392c4d4a16a723751578c32e9045e466a37a894e8c964375d53a7104922f85
+        IexecHub: 0xd6fac685e694fcfb60738fa50bac7cd4c0bad7db
+      IexecHub deployed at address: 0xd6fac685e694fcfb60738fa50bac7cd4c0bad7db
+        ... 0x449e1e8454492b5a30dce570bd2df29a2d4a888f443af4b7906babdfaf638f22
       transferOwnership of WorkerPoolHub to IexecHub
-        ... 0x3fc321c6195173a2c3bff680078c0552862741e6401229029218d3536c4afb8d
+        ... 0x27e926baf1d3bcbc0de60a2762f0ef6499eda7a7d89084df1a03fd9f71c3c255
       transferOwnership of AppHub to IexecHub
-        ... 0xde64493dc7aadb9113d5f499133a515118badabdd8d3284631bf2f13294afa6b
+        ... 0x3559b3c8a96d9e8a95efda24f515d7c4b2562a4419dd7d244de406025c06f061
       transferOwnership of DatasetHub to IexecHub
         Deploying Marketplace...
-        ... 0x3ee5152dc2ba18cbadfb33ad8845277718e755c685b07de4229b0fb3600097c7
-        Marketplace: 0xf7ef6b1052ad2d7a8400cb2a9bfec1dd5e1eac90
-      Marketplace deployed at address: 0xf7ef6b1052ad2d7a8400cb2a9bfec1dd5e1eac90
-        ... 0x649460043b755ba2276c0c1f59b45fddf1ff56c48b95658a41ed584de57da69c
+        ... 0xa13fbf77364049cc20126a520dd578fbc6d774eeb2a05c53b66fb0c64a9e45a2
+        Marketplace: 0x32aedc290604f7a674781b232143b837a358d711
+      Marketplace deployed at address: 0x32aedc290604f7a674781b232143b837a358d711
+        ... 0xb66225b86ec8c181307144bb832fe3a18a92133939fcb3bc16817e66aabb0072
       attach Contracts to IexecHub done
-        ... 0x230ceff4f9dd1d28eafae45b791f2331927b5f2f12a8d49d3f0691874be280fa
+        ... 0x855c7f5b8dba04b4818a08b512e850313f2451233df7a7b73d0f6ad52a1efd9a
       setCategoriesCreator to 0xcd7CcF952E0482ca41b46c6BBAd3A1852faD69dC
-      create category : Mega
-        ... 0xc5de531b190cb15bf6431bc9aa0f53152d79149e2501f1007481fcf718da8d93
-      create category : MegaPlus
-        ... 0xcb5fcfdf69c00b7e8a8f4cdf148011a03e12f30ba7c4fb4653b16957f03a03f4
-      create category : Giga
-        ... 0x1b6f6573ba822e067cb1a002e8d133d6c33c1d89cfd3839ea80c73e298396a7b
-      create category : GigaPlus
-        ... 0xf4d7633ef7cd21abf5110bb40e2a6a07e87090b189e31daf4e89765e707677fd
-      create category : GigaGrande
-        ... 0x476f8f4c1039e6c8854528588a09016d17a342c726a729596fcc9acc30b0cb31
-      create category : GigaMax
-        ... 0x700a302c41d08582740a8bfdf1ead75f13b05d3f78af642795fcb1eed60f3179
-      m_categoriesCount is now: 6
+      create category : 1
+        ... 0xf7d35be5c6028761ad4c47a4fd8d4a5ed97bcd573c81d9ffe965b4d4cf9defba
+      create category : 2
+        ... 0x3c2e1987d78201a7b3ed96bebea5ea67aa97d4cdf38d0a53ffcda94900659a02
+      create category : 3
+        ... 0x8a0a60b793a41c422037adbf48aac74dea09b367f51a7ffb0466b08f70981daf
+      create category : 4
+        ... 0x1c9bfc3d2a117293bfcc60766ea3c7c8b610a6d624fadc1d713ded994694b319
+      create category : 5
+        ... 0xf07396c4bd2400567b8d0d1f9ca13677d52002ec2293862dc06bfe9ac3ba2c2e
+      m_categoriesCount is now: 5
       Saving successful migration to network...
-        ... 0x0fa7f2a735ebce0f11e61b70247875562895795e56cd089bd7c8d1310c88e36d
+        ... 0xba462b16c8f8573b2b8764d53c30460b13a0f8a9720829f8447411b54acfddd9
       Saving artifacts...
       */