diff --git a/server/lib/db/transactions.js b/server/lib/db/transactions.js
index af02bb5..b00a21b 100644
--- a/server/lib/db/transactions.js
+++ b/server/lib/db/transactions.js
@@ -2,10 +2,8 @@ const Transactions = require('../../models/transaction.js');
 const logger       = require('../logger');
 const config       = require('../../config');
 
-const txs = new Transactions();
+const Txs = new Transactions();
 
-// For now, blocks handles these calls.
-// These will be replaced with more advanced mongo
 // No optimization yet.
 // Will be replaced with a more sophisticated api soon
 
@@ -49,147 +47,44 @@ function getTransactions(params, options, limit, skip, cb) {
     .limit(limit);
 }
 
-function getTransaction(params, options, limit, skip, cb) {
-  getTransactions(params, options, limit, skip, (err, tx) => {
-    if (err) {
-      logger.log('error',
-        `getTransaction: ${err.err}`);
-      return cb(err);
-    }
-    if (!tx.length > 0) {
-      return cb({ err: 'Tx not found' });
-    }
-    return cb(null, tx[0]);
-  });
+function getEmptyInputs(cb) {
+  return Txs.getEmptyInputs(cb);
 }
 
-// Req Change, refactor above
 function getTopTransactions(cb) {
-  // Do not return mongo ids
-  const defaultOptions = { _id: 0 };
-  // Query mongo
-  Transactions.find(
-    {},
-    (err, txs) => {
-      if (err) {
-        logger.log('error',
-          `getTransactions: ${err}`);
-        return cb(err);
-      }
-      if (!txs.length > 0) {
-        return cb({ err: 'Tx not found' });
-      }
-      return cb(null, txs);
-    })
-    .sort({ height: -1 })
+  return Txs.last(cb)
     .limit(MAX_TXS);
 }
 
 function getTxById(txid, cb) {
-  txs.byId(txid,
-    (err, transaction) => {
-      if (err) {
-        logger.log('error',
-          `getTxById: ${txid} ${err.err}`);
-        return cb(err);
-      }
-      return cb(null, transaction);
-    });
+  return Txs.byId(txid, cb);
 }
 
 function getTxByBlock(blockHash, page, limit, cb) {
-  getTransactions(
-    { block: blockHash },
-    {},
-    limit,
-    page * limit,
-    (err, tx) => {
-      if (err) {
-        logger.log('error',
-          `getTxByBlock: ${err.err}`);
-        return cb(err);
-      }
-      if (!tx.length > 0) {
-        return cb({ err: 'Tx not found' });
-      }
-      return cb(null, tx);
-    });
+  return Txs.byBlockHash(blockHash, cb)
+    .limit(MAX_TXS);
 }
 
 function getTxByAddress(address, page, limit, cb) {
-  getTransactions(
-    {
-      $or: [
-        { 'inputs.address': address },
-        { 'outputs.address': address }],
-    },
-    {},
-    limit,
-    page * limit,
-    (err, tx) => {
-      if (err) {
-        logger.log('error',
-          `getTxByAddress: ${err.err}`);
-        return cb(err);
-      }
-      if (!tx.length > 0) {
-        return cb({ err: 'Tx not found' });
-      }
-      return cb(null, tx);
-    });
+  return Txs.byAddress(address, cb)
+    .limit(MAX_TXS);
 }
 
 function getTxCountByBlock(blockHash, cb) {
-  Transactions.count(
-    { block: blockHash },
-    (err, count) => {
-      if (err) {
-        logger.log('error',
-          `getTxCountByBlock ${err}`);
-        return cb(err);
-      }
-      return cb(null, count);
-    });
+  return Txs.countByBlock(blockHash, cb);
 }
 
 function getTxCountByAddress(address, cb) {
-  Transactions.count(
-    { $or: [
-      { 'inputs.address': address },
-      { 'outputs.address': address }],
-    },
-    (err, count) => {
-      if (err) {
-        logger.log('error',
-          `getTxCountByAddress ${err}`);
-        return cb(err);
-      }
-      return cb(null, count);
-    });
+  return Txs.countByAddress(address, cb);
 }
 
-
 function updateInput(txid, inputid, value, address) {
-  Transactions.findOneAndUpdate(
-    { _id: txid, 'inputs._id': inputid },
-    {
-      $set: {
-        'inputs.$.value': value,
-        'inputs.$.address': address,
-      },
-    },
-    (err, tx) => {
-      if (err) {
-        logger.log('error',
-          `updateInput: ${err}`);
-      }
-    },
-  );
+  return Txs.updateInput(txid, inputid, value, address);
 }
 
 module.exports = {
-  getTransaction,
   getTransactions,
+  getEmptyInputs,
   getTopTransactions,
   getTxById,
   getTxByBlock,
diff --git a/server/lib/parser/transaction.js b/server/lib/parser/transaction.js
index 51f853e..febef6f 100644
--- a/server/lib/parser/transaction.js
+++ b/server/lib/parser/transaction.js
@@ -72,14 +72,7 @@ function parse(entry, txs) {
 }
 
 function findEmptyInputs() {
-  db.txs.getTransactions(
-    {
-      'inputs.prevout.hash': { $ne: '0000000000000000000000000000000000000000000000000000000000000000' },
-      'inputs.address': '',
-    },
-    {},
-    100,
-    0,
+  db.txs.getEmptyInputs(
     (err, txs) => {
       if (err) {
         return logger.log('error',
diff --git a/server/models/transaction.js b/server/models/transaction.js
index 1d5c842..d39855a 100644
--- a/server/models/transaction.js
+++ b/server/models/transaction.js
@@ -31,12 +31,126 @@ TransactionSchema.methods.byId = function txById(txid, cb) {
     (err, tx) => {
       if (err) {
         logger.log('error',
-          `TransactionSchema.methods.byId: ${err}`);
+          `byId: ${err}`);
         return cb(err);
       }
       return cb(null, tx);
     });
 };
 
+TransactionSchema.methods.byHash = function txByHash(hash, cb) {
+  return this.byId(hash, cb);
+};
+
+TransactionSchema.methods.byBlockHash = function txByBlockHash(hash, cb) {
+  return this.model('Transaction').find(
+    { block: hash },
+    (err, txs) => {
+      if (err) {
+        logger.log('error',
+          `byBlockHash: ${err}`);
+        return cb(err);
+      }
+      return cb(null, txs);
+    },
+  );
+};
+
+TransactionSchema.methods.byAddress = function txByAddress(address, cb) {
+  return this.model('Transaction').find(
+    {
+      $or: [
+        { 'inputs.address': address },
+        { 'outputs.address': address }],
+    },
+    (err, tx) => {
+      if (err) {
+        logger.log('error',
+          `byAddress: ${err.err}`);
+        return cb(err);
+      }
+      if (!tx.length > 0) {
+        return cb({ err: 'Tx not found' });
+      }
+      return cb(null, tx);
+    },
+  );
+};
+
+TransactionSchema.methods.countByBlock = function txByAddress(hash, cb) {
+  return this.model('Transaction').count(
+    { block: hash },
+    (err, count) => {
+      if (err) {
+        logger.log('error',
+          `countByBlock ${err}`);
+        return cb(err);
+      }
+      return cb(null, count);
+    },
+  );
+};
+
+TransactionSchema.methods.countByAddress = function txByAddress(address, cb) {
+  return this.model('Transaction').count(
+    {
+      $or: [
+        { 'inputs.address': address },
+        { 'outputs.address': address }],
+    },
+    (err, count) => {
+      if (err) {
+        logger.log('error',
+          `countByAddress ${err}`);
+        return cb(err);
+      }
+      return cb(null, count);
+    },
+  );
+};
+
+TransactionSchema.methods.updateInput = function updateInput(txid, inputid, value, address) {
+  return this.model('Transaction').findOneAndUpdate(
+    { _id: txid, 'inputs._id': inputid },
+    {
+      $set: {
+        'inputs.$.value': value,
+        'inputs.$.address': address,
+      },
+    },
+    (err, tx) => {
+      if (err) {
+        logger.log('error',
+          `updateInput: ${err}`);
+      }
+    },
+  );
+};
+
+TransactionSchema.methods.last = function lastTx(cb) {
+  return this.model('Transaction').find(
+    {},
+    (err, txs) => {
+      if (err) {
+        logger.log('error',
+          `TransactionSchema last: ${err}`);
+        return cb(err);
+      }
+      if (!txs.length > 0) {
+        return cb({ err: 'Tx not found' });
+      }
+      return cb(null, txs);
+    },
+  );
+};
+
+TransactionSchema.methods.getEmptyInputs = function findEmptyInputs(cb) {
+  return this.model('Transaction').find({
+    'inputs.prevout.hash': { $ne: '0000000000000000000000000000000000000000000000000000000000000000' },
+    'inputs.address': '',
+  },
+  cb);
+};
+
 
 module.exports = mongoose.model('Transaction', TransactionSchema);