diff --git a/lib/plugins/zero-conf/blockcypher/blockcypher.js b/lib/plugins/zero-conf/blockcypher/blockcypher.js
index 21e71f52..adf1ce58 100644
--- a/lib/plugins/zero-conf/blockcypher/blockcypher.js
+++ b/lib/plugins/zero-conf/blockcypher/blockcypher.js
@@ -4,6 +4,10 @@ const _ = require('lodash/fp')
 
 module.exports = {authorize}
 
+function isHighConfidence (confidence, txref) {
+  return txref.confirmations > 0 || txref.confidence * 100 >= confidence ? txref.value : 0
+}
+
 function authorize (account, toAddress, cryptoAtoms, cryptoCode) {
   return Promise.resolve()
   .then(() => {
@@ -11,18 +15,23 @@ function authorize (account, toAddress, cryptoAtoms, cryptoCode) {
 
     const query = qs.stringify({
       token: account.token,
-      includeConfidence: true,
-      confidence: account.confidence
+      includeConfidence: true
     })
 
+    const confidence = account.confidence
+
     const url = `https://api.blockcypher.com/v1/btc/main/addrs/${toAddress}?${query}`
 
+    console.log(url)
     return axios.get(url)
     .then(r => {
       const data = r.data
-      const authorizedValue = _.sumBy('value', data.txrefs)
+      const sumTxRefs = txrefs => _.sumBy(txref => isHighConfidence(confidence, txref), txrefs)
+
+      const authorizedValue = sumTxRefs(data.txrefs) + sumTxRefs(data.unconfirmed_txrefs)
 
       return cryptoAtoms.lte(authorizedValue)
     })
   })
 }
+
diff --git a/lib/plugins/zero-conf/mock-zero-conf/mock-zero-conf.js b/lib/plugins/zero-conf/mock-zero-conf/mock-zero-conf.js
index c930775b..76280f29 100644
--- a/lib/plugins/zero-conf/mock-zero-conf/mock-zero-conf.js
+++ b/lib/plugins/zero-conf/mock-zero-conf/mock-zero-conf.js
@@ -5,8 +5,7 @@ function authorize (account, toAddress, cryptoAtoms, cryptoCode) {
   .then(() => {
     if (cryptoCode !== 'BTC') throw new Error('Unsupported crypto: ' + cryptoCode)
 
-    const authorizedValue = 1e5 * 2
-    console.log('DEBUG300: %j', cryptoAtoms.lte(authorizedValue))
-    return cryptoAtoms.lte(authorizedValue)
+    const isAuthorized = true
+    return isAuthorized
   })
 }