diff --git a/src/planeta/contracts/Air.json b/src/planeta/contracts/Air.json
index 701c8f7d7..1e53b21a8 100644
--- a/src/planeta/contracts/Air.json
+++ b/src/planeta/contracts/Air.json
@@ -1,6 +1,6 @@
 {
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+  "address": "0x5380fb2ed21580964191856479c2761c1eabe14f",
+  "code": "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",
   "abi": [
     {
       "constant": false,
diff --git a/src/planeta/contracts/Earth.json b/src/planeta/contracts/Earth.json
index 96d5ec625..567af8580 100644
--- a/src/planeta/contracts/Earth.json
+++ b/src/planeta/contracts/Earth.json
@@ -1,6 +1,6 @@
 {
-  "address": "0x7e0d9c560471f773dc3949bcc116bb6abec8dc0d",
-  "code": 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+  "address": "0x74222249ce72d417ae1793970b1a61a69996f52b",
+  "code": 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   "abi": [
     {
       "constant": false,
diff --git a/src/planeta/utils.js b/src/planeta/utils.js
index 2f7bcde22..cbbeac4b1 100644
--- a/src/planeta/utils.js
+++ b/src/planeta/utils.js
@@ -20,6 +20,7 @@ EarthContractData.code = Buffer.from(
 );
 
 const BN = Web3.utils.BN;
+const factor18 = new BN("1000000000000000000");
 
 const USA_ADDR = "0x3378420181474D3aad9579907995011D6a545E3D";
 const USB_ADDR = "0x181fc600915c35F4e44d41f9203A7c389b4A7189";
@@ -102,29 +103,31 @@ export async function finalizeHandshake(plasma, passport, receipt, privateKey) {
   let txHash, finalReceipt;
   let rounds = 50;
 
+  try {
+    txHash = await _finalizeHandshake(plasma, passport, receipt, privateKey);
+  } catch(err) {
+    // ignore for now
+    console.log("error finalizing handshake", err);
+    // NOTE: Leap's node currently doesn't implement the "newBlockHeaders"
+    // JSON-RPC call. When a transaction is rejected by a node,
+    // sendSignedTransaction hence throws an error. We simply ignore this
+    // error here and use the polling tactic below. For more details see:
+    // https://github.com/leapdao/leap-node/issues/255
+
+    // const messageToIgnore = "Failed to subscribe to new newBlockHeaders to confirm the transaction receipts.";
+    // NOTE: In the case where we want to ignore web3's error message, there's
+    // "\r\n {}" included in the error message, which is why we cannot
+    // compare with the equal operator, but have to use String.includes.
+    // if (!err.message.includes(messageToIgnore)) {
+    //  throw err;
+    // }
+  }
+
   while (rounds--) {
     // redundancy rules ✊
-    try {
-      txHash = await _finalizeHandshake(plasma, passport, receipt, privateKey);
-    } catch(err) {
-      // ignore for now
-      console.log("error finalizing handshake", err);
-      // NOTE: Leap's node currently doesn't implement the "newBlockHeaders"
-      // JSON-RPC call. When a transaction is rejected by a node,
-      // sendSignedTransaction hence throws an error. We simply ignore this
-      // error here and use the polling tactic below. For more details see:
-      // https://github.com/leapdao/leap-node/issues/255
-
-      // const messageToIgnore = "Failed to subscribe to new newBlockHeaders to confirm the transaction receipts.";
-      // NOTE: In the case where we want to ignore web3's error message, there's
-      // "\r\n {}" included in the error message, which is why we cannot
-      // compare with the equal operator, but have to use String.includes.
-      // if (!err.message.includes(messageToIgnore)) {
-      //  throw err;
-      // }
-    }
 
     let res = await plasma.eth.getTransaction(txHash)
+      console.log("albi", res, txHash);
 
     if (res && res.blockHash) {
       finalReceipt = res;
@@ -143,6 +146,10 @@ export async function finalizeHandshake(plasma, passport, receipt, privateKey) {
 }
 
 async function _finalizeHandshake(plasma, passport, receipt, privateKey) {
+  const gt = lower => o => (new BN(o.output.value)).gt((new BN(lower)).mul(factor18));
+   // Select a random element from a list, see below for usage
+  const choice = l => l[Math.floor(Math.random() * l.length)];
+
   const theirPassport = unpackReceipt(receipt);
   const theirPassportOutput = await findPassportOutput(
     plasma,
@@ -151,13 +158,14 @@ async function _finalizeHandshake(plasma, passport, receipt, privateKey) {
     theirPassport.value
   );
 
-  const earthLeapOutput = (await plasma.getUnspent(EarthContractData.address, LEAP_COLOR))[0];
-  const earthCO2Output = (await plasma.getUnspent(EarthContractData.address, CO2_COLOR))[0];
-  const earthGoellarsOutput = (await plasma.getUnspent(
+  // TODO: remove filters.
+  const earthLeapOutput = choice(await plasma.getUnspent(EarthContractData.address, LEAP_COLOR))
+  const earthCO2Output = choice((await plasma.getUnspent(EarthContractData.address, CO2_COLOR)).filter(gt(20)))
+  const earthGoellarsOutput = choice((await plasma.getUnspent(
     EarthContractData.address,
     GOELLARS_COLOR
-  ))[1];
-  console.log(EarthContractData, earthLeapOutput, earthCO2Output, earthGoellarsOutput);
+  )).filter(gt("1")))
+  console.log("hello", earthLeapOutput, earthCO2Output, earthGoellarsOutput, theirPassportOutput, passport);
 
   const earthContract = new PlasmaContract(plasma, EarthContractData.abi);
   return await earthContract.methods