diff --git a/lib/contracts/blockchain.js b/lib/contracts/blockchain.js
new file mode 100644
index 00000000..46fc2793
--- /dev/null
+++ b/lib/contracts/blockchain.js
@@ -0,0 +1,10 @@
+
+class Blockchain {
+  constructor(optiosn) {
+    this.plugins = options.plugins;
+    this.logger = options.logger;
+  }
+}
+
+module.exports = Blockchain;
+
diff --git a/lib/contracts/deploy.js b/lib/contracts/deploy.js
index 632596ba..9ae358f9 100644
--- a/lib/contracts/deploy.js
+++ b/lib/contracts/deploy.js
@@ -1,5 +1,6 @@
 let async = require('async');
 //require("../utils/debug_util.js")(__filename, async);
+let utils = require('../utils/utils.js');
 
 let RunCode = require('../core/runCode.js');
 
@@ -86,7 +87,7 @@ class Deploy {
 
     if (contract.address !== undefined) {
       try {
-        this.web3.utils.toChecksumAddress(contract.address);
+        utils.toChecksumAddress(contract.address);
       } catch(e) {
         self.logger.error(__("error deploying %s", contract.className));
         self.logger.error(e.message);
diff --git a/lib/contracts/deploy_tracker.js b/lib/contracts/deploy_tracker.js
index 2497b2dc..2873c56a 100644
--- a/lib/contracts/deploy_tracker.js
+++ b/lib/contracts/deploy_tracker.js
@@ -1,4 +1,5 @@
 let fs = require('../core/fs.js');
+let utils = require('../utils/utils.js');
 
 class DeployTracker {
   constructor(options, cb) {
@@ -37,14 +38,14 @@ class DeployTracker {
   }
 
   trackContract(contractName, code, args, address) {
-    this.currentChain.contracts[this.web3.utils.sha3(code + contractName + args.join(','))] = {
+    this.currentChain.contracts[utils.sha3(code + contractName + args.join(','))] = {
       name: contractName,
       address: address
     };
   }
 
   getContract(contractName, code, args) {
-    let contract = this.currentChain.contracts[this.web3.utils.sha3(code + contractName + args.join(','))];
+    let contract = this.currentChain.contracts[utils.sha3(code + contractName + args.join(','))];
     if (contract && contract.address === undefined) {
       return false;
     }
diff --git a/lib/utils/utils.js b/lib/utils/utils.js
index 0063c1ec..edcb5fa3 100644
--- a/lib/utils/utils.js
+++ b/lib/utils/utils.js
@@ -6,6 +6,7 @@ let https = require('follow-redirects').https;
 let shelljs = require('shelljs');
 var tar = require('tar');
 var propose = require('propose');
+var Web3 = require('web3');
 const constants = require('../constants');
 
 //let fs = require('../core/fs.js');
@@ -173,6 +174,14 @@ function getExternalContractUrl(file) {
   };
 }
 
+function toChecksumAddress(address) {
+  return Web3.utils.toChecksumAddress(address);
+}
+
+function sha3(arg) {
+  return Web3.utils.sha3(arg);
+}
+
 module.exports = {
   joinPath: joinPath,
   filesMatchingPattern: filesMatchingPattern,
@@ -190,5 +199,7 @@ module.exports = {
   extractTar: extractTar,
   proposeAlternative: proposeAlternative,
   pwd: pwd,
-  getExternalContractUrl
+  getExternalContractUrl,
+  toChecksumAddress: toChecksumAddress,
+  sha3: sha3
 };