diff --git a/.gitignore b/.gitignore
index 232df5bf..d1afeb29 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,5 +27,4 @@ bin/SHA256SUMS.asc
 regtest/data/node1/regtest
 regtest/data/node2/regtest
 regtest/data/node3/regtest
-contrib
 bitcore-node.json
diff --git a/contrib/printKeys.js b/contrib/printKeys.js
new file mode 100644
index 00000000..295b222b
--- /dev/null
+++ b/contrib/printKeys.js
@@ -0,0 +1,34 @@
+'use strict';
+
+var levelup = require('levelup');
+var leveldown = require('leveldown');
+var Encoding = require('../lib/services/address/encoding');
+var dbPath = '/Users/patrick/.bitcore/bitcore-node.db';
+
+var db = levelup(dbPath, {keyEncoding: 'binary', valueEncoding: 'binary'});
+
+var prefix = new Buffer('0002', 'hex');
+var encoding = new Encoding(prefix);
+var address = '19k8nToWwMGuF4HkNpzgoVAYk4viBnEs5D';
+var addressLength = new Buffer(1);
+addressLength.writeUInt8(address.length);
+
+//var startBuffer = prefix;
+//var endBuffer = Buffer.concat([prefix, new Buffer('ff', 'hex')]);
+
+var startBuffer = Buffer.concat([prefix, addressLength, new Buffer(address, 'utf8'), new Buffer('00', 'hex')]);
+var endBuffer = Buffer.concat([prefix, addressLength, new Buffer(address, 'utf8'), new Buffer('ff', 'hex')]);
+
+var stream = db.createReadStream({
+  gte: startBuffer,
+  lt: endBuffer
+});
+
+stream.on('data', function(data) {
+  console.log(encoding.decodeAddressIndexKey(data.key), encoding.decodeAddressIndexValue(data.value));
+  //console.log(data.key.toString('hex'), data.value.toString('hex'));
+});
+
+stream.on('end', function() {
+  console.log('end');
+});
\ No newline at end of file