diff --git a/README.md b/README.md
index 5213db6..ad4df36 100644
--- a/README.md
+++ b/README.md
@@ -97,11 +97,11 @@ Some examples interact (via HTTPS) with a 3rd Party Blockchain Provider (3PBP).
 - [Generate a random address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L12)
 - [Generate an address from a SHA256 hash](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L19)
 - [Import an address via WIF](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L29)
-- [Generate a 2-of-3 multisig P2SH address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L36)
+- [Generate a 2-of-3 P2SH multisig address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L36)
 - [Generate a SegWit address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js:61)
-- [Generate a SegWit address (via P2SH)](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js:50)
+- [Generate a SegWit P2SH address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js:50)
 - [Generate a SegWit 3-of-4 multisig address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js:85)
-- [Generate a SegWit 2-of-2 multisig address (via P2SH)](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js:71)
+- [Generate a SegWit 2-of-2 P2SH multisig address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js:71)
 - [Support the retrieval of transactions for an address (3rd party blockchain)](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L52)
 - [Generate a Testnet address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L73)
 - [Generate a Litecoin address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/addresses.js#L83)
@@ -109,7 +109,10 @@ Some examples interact (via HTTPS) with a 3rd Party Blockchain Provider (3PBP).
 - [Create a 2-to-2 Transaction](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L28)
 - [Create (and broadcast via 3PBP) a typical Transaction](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L46)
 - [Create (and broadcast via 3PBP) a Transaction with an OP\_RETURN output](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L88)
-- [Create (and broadcast via 3PBP) a Transaction with a 2-of-4 multisig P2SH input](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L115)
+- [Create (and broadcast via 3PBP) a Transaction with a 2-of-4 P2SH(multisig) input](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions
+.js#L115)
+- [Create (and broadcast via 3PBP) a Transaction with a SegWit P2SH(P2WPKH) input](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L155)
+- [Create (and broadcast via 3PBP) a Transaction with a SegWit 3-of-4 P2SH(P2WSH(multisig)) input](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/transactions.js#L182)
 - [Import a BIP32 testnet xpriv and export to WIF](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L8)
 - [Export a BIP32 xpriv, then import it](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L15)
 - [Export a BIP32 xpub](https://github.com/bitcoinjs/bitcoinjs-lib/blob/ae8422d/test/integration/bip32.js#L26)
diff --git a/test/integration/_testnet.js b/test/integration/_testnet.js
index 8a81e59..0de6ac2 100644
--- a/test/integration/_testnet.js
+++ b/test/integration/_testnet.js
@@ -2,6 +2,7 @@ var async = require('async')
 var bitcoin = require('../../')
 var Blockchain = require('cb-http-client')
 var coinSelect = require('coinselect')
+var dhttp = require('dhttp/200')
 var typeforce = require('typeforce')
 var types = require('../../src/types')
 
@@ -26,6 +27,7 @@ function fundAddress (unspents, outputs, callback) {
   })
 
   result.outputs.forEach(function (x) {
+    if (x.address) console.warn('funding ' + x.address + ' w/ ' + x.value)
     txb.addOutput(x.address || kpAddress, x.value)
   })
 
@@ -34,17 +36,14 @@ function fundAddress (unspents, outputs, callback) {
   })
 
   var tx = txb.build()
-  var txId = tx.getId()
 
   blockchain.transactions.propagate(tx.toHex(), function (err) {
     if (err) return callback(err)
 
-    // FIXME: @blocktrail can be very slow, give it time
-    setTimeout(function () {
-      callback(null, outputs.map(function (_, i) {
-        return { txId: txId, vout: i }
-      }))
-    }, 3000)
+    var txId = tx.getId()
+    callback(null, outputs.map(function (x, i) {
+      return { txId: txId, vout: i, value: x.value }
+    }))
   })
 }
 
@@ -73,17 +72,26 @@ blockchain.verify = function (address, txId, value, done) {
   async.retry(5, function (callback) {
     setTimeout(function () {
       // check that the above transaction included the intended address
-      blockchain.addresses.unspents(blockchain.RETURN_ADDRESS, function (err, unspents) {
+      dhttp({
+        method: 'POST',
+        url: 'https://api.ei8ht.com.au:9443/3/txs',
+        body: [txId]
+      }, function (err, result) {
         if (err) return callback(err)
-        if (!unspents.some(function (x) {
-          return x.txId === txId && x.value === value
-        })) return callback(new Error('Could not find unspent'))
-
+        if (!result[txId]) return callback(new Error('Could not find ' + txId))
         callback()
       })
-    }, 600)
+    }, 400)
   }, done)
 }
 
+blockchain.transactions.propagate = function (txHex, callback) {
+  dhttp({
+    method: 'POST',
+    url: 'https://api.ei8ht.com.au:9443/3/pushtx',
+    body: txHex
+  }, callback)
+}
+
 blockchain.RETURN_ADDRESS = kpAddress
 module.exports = blockchain
diff --git a/test/integration/transactions.js b/test/integration/transactions.js
index 8832c7f..78f2333 100644
--- a/test/integration/transactions.js
+++ b/test/integration/transactions.js
@@ -21,7 +21,7 @@ describe('bitcoinjs-lib (transactions)', function () {
 
     tx.sign(0, alice)
 
-    // build, prepare for broadcast to the Bitcoin network, see "can broadcast a Transaction" below
+    // prepare for broadcast to the Bitcoin network, see "can broadcast a Transaction" below
     assert.strictEqual(tx.build().toHex(), '01000000019d344070eac3fe6e394a16d06d7704a7d5c0a10eb2a2c16bc98842b7cc20d561000000006b48304502210088828c0bdfcdca68d8ae0caeb6ec62cd3fd5f9b2191848edae33feb533df35d302202e0beadd35e17e7f83a733f5277028a9b453d525553e3f5d2d7a7aa8010a81d60121029f50f51d63b345039a290c94bffd3180c99ed659ff6ea6b1242bca47eb93b59fffffffff01e02e0000000000001976a91406afd46bcdfd22ef94ac122aa11f241244a37ecc88ac00000000')
   })
 
@@ -39,7 +39,7 @@ describe('bitcoinjs-lib (transactions)', function () {
     tx.sign(1, bob) // Bob signs his input, which was the second input (1th)
     tx.sign(0, alice) // Alice signs her input, which was the first input (0th)
 
-    // build, prepare for broadcast to the Bitcoin network, see "can broadcast a Transaction" below
+    // prepare for broadcast to the Bitcoin network, see "can broadcast a Transaction" below
     assert.strictEqual(tx.build().toHex(), '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')
   })
 
@@ -54,11 +54,11 @@ describe('bitcoinjs-lib (transactions)', function () {
     testnetUtils.faucetMany([
       {
         address: alice1.getAddress(),
-        value: 4e4
+        value: 5e4
       },
       {
         address: alice2.getAddress(),
-        value: 2e4
+        value: 7e4
       }
     ], function (err, unspents) {
       if (err) return done(err)
@@ -66,8 +66,8 @@ describe('bitcoinjs-lib (transactions)', function () {
       var tx = new bitcoin.TransactionBuilder(testnet)
       tx.addInput(unspents[0].txId, unspents[0].vout) // alice1 unspent
       tx.addInput(unspents[1].txId, unspents[1].vout) // alice2 unspent
-      tx.addOutput('mvGVHWi6gbkBZZPaqBVRcxvKVPYd9r3fp7', 1e4) // the actual "spend"
-      tx.addOutput(aliceChange.getAddress(), 3e4) // Alice's change
+      tx.addOutput('mwCwTceJvYV27KXBc3NJZys6CjsgsoeHmf', 8e4) // the actual "spend"
+      tx.addOutput(aliceChange.getAddress(), 1e4) // Alice's change
       // (in)(4e4 + 2e4) - (out)(1e4 + 3e4) = (fee)2e4 = 20000, this is the miner fee
 
       // Alice signs each input with the respective private keys
@@ -112,7 +112,7 @@ describe('bitcoinjs-lib (transactions)', function () {
     })
   })
 
-  it('can create (and broadcast via 3PBP) a Transaction with a 2-of-4 multisig P2SH input', function (done) {
+  it('can create (and broadcast via 3PBP) a Transaction with a 2-of-4 P2SH(multisig) input', function (done) {
     this.timeout(30000)
 
     var keyPairs = [
@@ -123,11 +123,10 @@ describe('bitcoinjs-lib (transactions)', function () {
     ].map(function (wif) { return bitcoin.ECPair.fromWIF(wif, testnet) })
     var pubKeys = keyPairs.map(function (x) { return x.getPublicKeyBuffer() })
 
-    var redeemScript = bitcoin.script.multisig.output.encode(2, pubKeys) // 2 of 4
+    var redeemScript = bitcoin.script.multisig.output.encode(2, pubKeys)
     var scriptPubKey = bitcoin.script.scriptHash.output.encode(bitcoin.crypto.hash160(redeemScript))
     var address = bitcoin.address.fromOutputScript(scriptPubKey, testnet)
 
-    // attempt to send funds to the source address
     testnetUtils.faucet(address, 2e4, function (err, unspent) {
       if (err) return done(err)
 
@@ -135,22 +134,85 @@ describe('bitcoinjs-lib (transactions)', function () {
       txb.addInput(unspent.txId, unspent.vout)
       txb.addOutput(testnetUtils.RETURN_ADDRESS, 1e4)
 
-      // sign with 1st and 3rd key
       txb.sign(0, keyPairs[0], redeemScript)
       txb.sign(0, keyPairs[2], redeemScript)
 
-      // broadcast our transaction
       var tx = txb.build()
-      var txId = tx.getId()
 
-      dhttp({
-        method: 'POST',
-        url: 'https://api.ei8ht.com.au:9443/3/pushtx',
-        body: tx.toHex()
-      }, function (err) {
+      // build and broadcast to the Bitcoin Testnet network
+      testnetUtils.transactions.propagate(tx.toHex(), function (err) {
+        if (err) return done(err)
+
+        testnetUtils.verify(address, tx.getId(), 1e4, done)
+      })
+    })
+  })
+
+  it('can create (and broadcast via 3PBP) a Transaction with a SegWit P2SH(P2WPKH) input', function (done) {
+    this.timeout(30000)
+
+    var keyPair = bitcoin.ECPair.fromWIF('cMahea7zqjxrtgAbB7LSGbcQUr1uX1ojuat9jZodMN87JcbXMTcA', testnet)
+    var pubKey = keyPair.getPublicKeyBuffer()
+    var pubKeyHash = bitcoin.crypto.hash160(pubKey)
+
+    var redeemScript = bitcoin.script.witnessPubKeyHash.output.encode(pubKeyHash)
+    var redeemScriptHash = bitcoin.crypto.hash160(redeemScript)
+
+    var scriptPubKey = bitcoin.script.scriptHash.output.encode(redeemScriptHash)
+    var address = bitcoin.address.fromOutputScript(scriptPubKey, testnet)
+
+    testnetUtils.faucet(address, 5e4, function (err, unspent) {
+      if (err) return done(err)
+
+      var txb = new bitcoin.TransactionBuilder(testnet)
+      txb.addInput(unspent.txId, unspent.vout)
+      txb.addOutput(testnetUtils.RETURN_ADDRESS, 4e4)
+      txb.sign(0, keyPair, redeemScript, null, unspent.value)
+
+      var tx = txb.build()
+
+      // build and broadcast to the Bitcoin Testnet network
+      testnetUtils.transactions.propagate(tx.toHex(), function (err) {
+        if (err) return done(err)
+
+        testnetUtils.verify(address, tx.getId(), 1e4, done)
+      })
+    })
+  })
+
+  it('can create (and broadcast via 3PBP) a Transaction with a SegWit 3-of-4 P2SH(P2WSH(multisig)) input', function (done) {
+    this.timeout(50000)
+
+    var keyPairs = [
+      'cMahea7zqjxrtgAbB7LSGbcQUr1uX1ojuat9jZodMN87JcbXMTcA',
+      'cMahea7zqjxrtgAbB7LSGbcQUr1uX1ojuat9jZodMN87K7XCyj5v',
+      'cMahea7zqjxrtgAbB7LSGbcQUr1uX1ojuat9jZodMN87KcLPVfXz',
+      'cMahea7zqjxrtgAbB7LSGbcQUr1uX1ojuat9jZodMN87L7FgDCKE'
+    ].map(function (wif) { return bitcoin.ECPair.fromWIF(wif, testnet) })
+    var pubKeys = keyPairs.map(function (x) { return x.getPublicKeyBuffer() })
+
+    var witnessScript = bitcoin.script.multisig.output.encode(3, pubKeys)
+    var redeemScript = bitcoin.script.witnessScriptHash.output.encode(bitcoin.crypto.sha256(witnessScript))
+    var scriptPubKey = bitcoin.script.scriptHash.output.encode(bitcoin.crypto.hash160(redeemScript))
+    var address = bitcoin.address.fromOutputScript(scriptPubKey, testnet)
+
+    testnetUtils.faucet(address, 6e4, function (err, unspent) {
+      if (err) return done(err)
+
+      var txb = new bitcoin.TransactionBuilder(testnet)
+      txb.addInput(unspent.txId, unspent.vout)
+      txb.addOutput(testnetUtils.RETURN_ADDRESS, 4e4)
+      txb.sign(0, keyPairs[0], redeemScript, null, unspent.value, witnessScript)
+      txb.sign(0, keyPairs[2], redeemScript, null, unspent.value, witnessScript)
+      txb.sign(0, keyPairs[3], redeemScript, null, unspent.value, witnessScript)
+
+      var tx = txb.build()
+
+      // build and broadcast to the Bitcoin Testnet network
+      testnetUtils.transactions.propagate(tx.toHex(), function (err) {
         if (err) return done(err)
 
-        testnetUtils.verify(address, txId, 1e4, done)
+        testnetUtils.verify(address, tx.getId(), 4e4, done)
       })
     })
   })