diff --git a/README.md b/README.md
index 1d2d276..f522304 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,6 @@ then add embark-nim-compiler to the plugins section in `embark.json`:
   "plugins": {
     "embark-nim-compiler": {
       "setupBlockchainOptions": true,
-      "useTestnet": false,
       "libHeraPath": "path/to/libHera.so"
     }
   }
@@ -28,6 +27,13 @@ then add embark-nim-compiler to the plugins section in `embark.json`:
 - `setupBlockchainOptions`: boolean that when set to `true`, will change the blockchain config for you. If you set this to `false`, you need to set the blockchain config yourself so that it supports eWasm
 - `libHeraPath`: string path to the file `libHera.so` that is used to have Geth use Hera as a VM. Not needed if `setupBlockchainOptions` is `false`
 
+Since you need to have Geth+Hera installed, make sure that the built Geth is in your Path or change `ethereumClientBin` in you blockchain config to point to the Geth executable (absolute path).
+
+### Temporary endpoint
+
+You can use our temporary endpoint available at `http://159.65.52.177:8545/`.
+This endpoint connects to an eWasm testnet node, but we'll probably shut down at some point, so don't rely on it for production.
+
 ## Requirements
 
 - [Embark](https://www.npmjs.com/package/embark) 5.0.0 or higher
diff --git a/ewasm-testnet-geth-config.json b/ewasm-testnet-geth-config.json
index 2c01cb3..78d538b 100644
--- a/ewasm-testnet-geth-config.json
+++ b/ewasm-testnet-geth-config.json
@@ -23,7 +23,7 @@
       "balance": "0x1"
     },
     "9fa4f23079bae7a7a5c392b67e18093310315bfc": {
-      "balance": "0x200000000000000000000000000000000000000000000000000000000000000"
+      "balance": "100000000000000000000000000"
     }
   },
   "number": "0x0",
diff --git a/index.js b/index.js
index a978935..9f8f321 100644
--- a/index.js
+++ b/index.js
@@ -2,6 +2,7 @@ const fs = require("fs");
 const path = require('path');
 const {exec} = require('child_process');
 const async = require('async');
+const binaryen = require('binaryen');
 
 function buf2hex(buffer) { // buffer is an ArrayBuffer
   return Array.prototype.map.call(new Uint8Array(buffer), x => ('00' + x.toString(16)).slice(-2)).join('');
@@ -44,29 +45,48 @@ class NimCompiler {
       compiledObject[className] = {};
 
       // Compile file
-      // TODO wait for docker image
-
-
-      // Get code from wasm file
-      const codeHex = "0x" + buf2hex(fs.readFileSync(file.path.replace('.nim', '.wasm')));
-
-      compiledObject[className].runtimeBytecode = codeHex;
-      compiledObject[className].realRuntimeBytecode = codeHex;
-      compiledObject[className].code = codeHex;
-
-      // Get ABI from nim file
-      exec(`docker run --entrypoint="abi_gen" -v "${this.dappPath('contracts')}":/code/ -w /code/ jacqueswww/nimclang ${path.basename(file.path)}`, (err, stdout, stderr) => {
+      exec(`docker run --entrypoint="nimplayc" -v "${this.dappPath()}":/code/ -w /code/ jacqueswww/nimclang ${file.path.replace(/\\/g, '/')}`, (err, stdout, stderr) => {
         if (err) {
-          this.logger.error('Error while getting ABI');
+          this.logger.error('Error while compiling Nim contract');
           this.logger.error(stderr);
           return eachCb(err);
         }
+
+        // Get bytecode from the WASM file
+        let escapedWast = '';
+        const wasm = buf2hex(fs.readFileSync(file.path.replace('.nim', '.wasm')));
+        for (let i = 0; i < wasm.length; i += 2) {
+          escapedWast += "\\" + wasm.slice(i, i + 2);
+        }
+
+        let codeHex;
+        const wast = `(module (import "ethereum" "finish" (func $finish (param i32 i32))) (memory 100) (data (i32.const 0)  "${escapedWast}") (export "memory" (memory 0)) (export "main" (func $main)) (func $main (call $finish (i32.const 0) (i32.const ${wasm.length / 2}))))`;
+
         try {
-          compiledObject[className].abiDefinition = JSON.parse(stdout);
-          return eachCb();
+          let module = binaryen.parseText(wast);
+          codeHex = buf2hex(module.emitBinary());
         } catch (e) {
           return eachCb(e);
         }
+
+        compiledObject[className].runtimeBytecode = codeHex;
+        compiledObject[className].realRuntimeBytecode = codeHex;
+        compiledObject[className].code = codeHex;
+
+        // Get ABI from nim file
+        exec(`docker run --entrypoint="abi_gen" -v "${this.dappPath('contracts')}":/code/ -w /code/ jacqueswww/nimclang ${path.basename(file.path)}`, (err, stdout, stderr) => {
+          if (err) {
+            this.logger.error('Error while getting ABI');
+            this.logger.error(stderr);
+            return eachCb(err);
+          }
+          try {
+            compiledObject[className].abiDefinition = JSON.parse(stdout);
+            return eachCb();
+          } catch (e) {
+            return eachCb(e);
+          }
+        });
       });
     }, (err) => {
       cb(err, compiledObject);
diff --git a/package.json b/package.json
index 4a6038e..fea9764 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,6 @@
   },
   "dependencies": {
     "async": "^3.1.0",
-    "shelljs": "^0.8.3"
+    "binaryen": "^89.0.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index a64ee6d..0a91b32 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -82,6 +82,11 @@ balanced-match@^1.0.0:
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
   integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
 
+binaryen@^89.0.0:
+  version "89.0.0"
+  resolved "https://registry.yarnpkg.com/binaryen/-/binaryen-89.0.0.tgz#ae5044422fddae3d5a117d62da5ceca46ff8b914"
+  integrity sha512-yvTTdiCzWUQb3NHcdpiyhQOTUpTw8l+YcjvDQ1+R4e2jr3VQspMScoQitOTPC6mftXkEP67x5S14kCApNX/X1Q==
+
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -340,7 +345,7 @@ functional-red-black-tree@^1.0.1:
   resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
   integrity sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
 
-glob@^7.0.0, glob@^7.1.2, glob@^7.1.3:
+glob@^7.1.2, glob@^7.1.3:
   version "7.1.4"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.4.tgz#aa608a2f6c577ad357e1ae5a5c26d9a8d1969255"
   integrity sha512-hkLPepehmnKk41pUGm3sYxoFs/umurYfYJCerbXEyFIWcAzvpipAgVkBqqT9RBKMGjnq6kMuyYwha6csxbiM1A==
@@ -419,11 +424,6 @@ inquirer@^6.2.2:
     strip-ansi "^5.1.0"
     through "^2.3.6"
 
-interpret@^1.0.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/interpret/-/interpret-1.2.0.tgz#d5061a6224be58e8083985f5014d844359576296"
-  integrity sha512-mT34yGKMNceBQUoVn7iCDKDntA7SC6gycMAWzGx1z/CMCTV7b2AAtXlo3nRyHZ1FelRkQbQjprHSYGwzLtkVbw==
-
 is-fullwidth-code-point@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
@@ -572,11 +572,6 @@ path-key@^2.0.1:
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
   integrity sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=
 
-path-parse@^1.0.6:
-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
-  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
-
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
@@ -592,13 +587,6 @@ punycode@^2.1.0:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
 
-rechoir@^0.6.2:
-  version "0.6.2"
-  resolved "https://registry.yarnpkg.com/rechoir/-/rechoir-0.6.2.tgz#85204b54dba82d5742e28c96756ef43af50e3384"
-  integrity sha1-hSBLVNuoLVdC4oyWdW70OvUOM4Q=
-  dependencies:
-    resolve "^1.1.6"
-
 regexpp@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-2.0.1.tgz#8d19d31cf632482b589049f8281f93dbcba4d07f"
@@ -609,13 +597,6 @@ resolve-from@^4.0.0:
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-4.0.0.tgz#4abcd852ad32dd7baabfe9b40e00a36db5f392e6"
   integrity sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g==
 
-resolve@^1.1.6:
-  version "1.12.0"
-  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.12.0.tgz#3fc644a35c84a48554609ff26ec52b66fa577df6"
-  integrity sha512-B/dOmuoAik5bKcD6s6nXDCjzUKnaDvdkRyAk6rsmsKLipWj4797iothd7jmmUhWTfinVMU+wc56rYKsit2Qy4w==
-  dependencies:
-    path-parse "^1.0.6"
-
 restore-cursor@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-2.0.0.tgz#9f7ee287f82fd326d4fd162923d62129eee0dfaf"
@@ -667,15 +648,6 @@ shebang-regex@^1.0.0:
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
   integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
 
-shelljs@^0.8.3:
-  version "0.8.3"
-  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.3.tgz#a7f3319520ebf09ee81275b2368adb286659b097"
-  integrity sha512-fc0BKlAWiLpwZljmOvAOTE/gXawtCoNrP5oaY7KIaQbbyHeQVg01pSEuEGvGh3HEdBU4baCD7wQBwADmM/7f7A==
-  dependencies:
-    glob "^7.0.0"
-    interpret "^1.0.0"
-    rechoir "^0.6.2"
-
 signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"